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CABLE SYSTEMS AND COMPONENTS

Subclass of:

375 - Pulse or digital communications

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Class / Patent application numberDescriptionNumber of patent applications / Date published
375258000 Transformer coupling 31
Entries
DocumentTitleDate
20130044826APPARATUS TO COMMUNICATE MULTIPLE SIGNALS FROM MULTIPLE ANTENNAS ON A SINGLE CABLE - An antenna assembly, a receiver, and a system configured to superimpose a first received signal from a first antenna and an intermediate signal based on a second received signal from a second antenna onto a single cable. The antenna assembly includes a mixer and an adjustable local oscillator (ALO) that frequency shift the second received signal to generate the intermediate signal. The output frequency of the ALO is controlled by a control signal superimposed on the single cable that is output by the receiver. With this arrangement, a plurality of antennas or antenna elements can be connected to a receiver using a single coaxial cable. Such an arrangement is particularly desirable to manufacturers of automobiles and other vehicles. Also, the receiver can detect if the output frequency of the ALO needs to be adjusted, and so close-loop control of the output frequency is possible.02-21-2013
20130044828Method of Handling Power Reduction at Transmitter and Related Communication Device - A method of arranging a frame for power reduction, utilized in a transmitter in a communication system is disclosed. The transmitter communicates with a receiver in the communication system. The method comprises generating a preamble with a first power level in the frame; arranging a header with the first power level after the preamble in the frame, wherein the header comprises information of a second power level; arranging an additional channel estimation (ACE) symbol with the second power level after the header in the frame; and arranging a first payload with the second power level after the ACE symbol in the frame.02-21-2013
20130044827Communications Via Power Line and a Hardware Implementation - Provided is a communication protocol for communication via power line. For example, there is a power supply equipment for communication via a power line including a controller, a power line input coupled to the power line, and a current demodulator coupled to the power line input and the controller. The controller is configured to demodulate a first portion of a power signal of the power line at the power line input using the current demodulator and to receive a first bitstream over the power line. A second bitstream may be provided by the controller in order to modulate a voltage sent from the power supply equipment to a powered device via the power line. The powered device may further demodulate the modulated voltage to extract the second bitstream sent from the power supply equipment.02-21-2013
20090190674METHOD AND APPARATUS TO INJECT NOISE IN A NETWORK SYSTEM - An apparatus, system, and method are disclosed for injecting noise onto a link of a network. The apparatus, system, and method include, providing a noise injector card, connecting the noise injector card to the link, receiving a control signal to activate the noise injector card, switching a switch of the noise injector card, and injecting noise onto the link.07-30-2009
201300283381-Wire Communication Protocol and Interface Circuit for High Voltage Applications - A system for communicating with a host using control signals over a 1-wire interface is disclosed. The system includes a driver coupled to the host by the 1-wire interface. Control signals are transmitted from the host to the driver for decoding by the driver controller. The control signals are pulse width modulation format signals which are interpreted by the driver as binary encoded command mode signals or analog encoded command mode signals, depending upon when the signals are received in relation to a preamble pulse and a post-amble pulse.01-31-2013
20110194626Multi-Wideband Communications Over Power Lines - Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.08-11-2011
20110194625METHOD AND APPARATUS FOR GENERATING A PREAMBLE FOR USE IN CABLE TRANSMISSION SYSTEMS - A method and apparatus for generating a preamble for use in DVB-C2 cable transmission standard is provided. The preamble has multiple functions including frame timing, synchronization, frequency offset estimation, system information signaling and initial channel estimation. In accordance with an implementation, a complementary sequence is inserted as a header and the complementary sequence and system signaling bits are mapped into modulation symbols for transmission on allocated even channels only of the cable transmission system.08-11-2011
20110194624PAIRING PLC DEVICES - A power line communication device includes a power line communication unit, a sensor to sense a physical connection to a second power line communication device other than via a powerline medium and a pairing unit to receive an indication of a physical connection between the power line communication device and the second power line communication device and to initiate a pairing process with the second power line communication device. A method of pairing communication devices which communicate along a non-data-cable medium includes sensing a data cable connection with a second device, entering an appropriate pairing state upon sensing the data cable connection, the pairing state being either an add device state or a join device state and performing pairing with the second device along the non-data-cable connection.08-11-2011
20120177132POWER LINE COMMUNICATIONS METHOD AND APPARATUS - Method for communication channel coordination between nodes, each node including at least one of a transmitter and a receiver, for transmitting and receiving signals over residential electrical cables. The residential electrical cables include at least one active wire, one neutral wire and one ground wire, at least two of the wires forming wire pairs. The method includes the procedures of, for a given one of the receiver, examining the transmitter in each one of the nodes which communicates with the receiver, selecting one of the examined transmitters as a primary transmitter, determining an optimal receive wire pair for the receiver to receive the signals transmitted between the primary transmitter and the receiver, informing all the examined transmitters of the determined optimal receive wire pair, and tracking at least one communication characteristic over the determined optimal receive wire pair.07-12-2012
20130077700SOFT REPETITION CODE COMBINER USING CHANNEL STATE INFORMATION - An embodiment is a method and apparatus to decode a signal using channel information. A channel state estimator generates a tone value representing channel information. A quantizer quantizes the tone value. A combiner combines de-interleaved symbols weighed by the quantized tone value. A comparator compares the combined de-interleaved symbols with a threshold to generate a decoding decision. Another embodiment is a method and apparatus to decode a signal using averaging. A channel estimator provides a channel estimate. A multiplier multiplies a quantized output of a demodulator with the channel estimate to produce N symbols of a signal corresponding to a carrier. A de-interleaver de-interleaves the N symbols. An averager averages the N de-interleaved symbols to generate a channel response at a carrier.03-28-2013
20100046642POWER LINE COMMUNICATIONS COUPLER - A power line communications coupler for effecting signal coupling between electric signalling equipment and an electric power system, said coupler including a fuse coupleable to a power line of said electric power system; and a signal coupler in electrical communication with said fuse and being couplable to said signalling equipment.02-25-2010
20130034172Powerline Communicated Load Control - A system for transmitting communication signals, the system comprising an injector circuit connected to a powered circuit conductor and configured to modulate a power signal with a direct current voltage offset, the direct current voltage offset being within a range that causes approximately 1 percent or less total harmonic distortion of the power signal; and a decoder connected to the powered circuit conductor and a load, the decoder configured to demodulate the direct current voltage offset to control the load. A method for transmitting communication signals, the method comprising modulating a power signal on a powered circuit conductor with a direct current voltage offset, the direct current voltage offset being within a range that causes approximately 1 percent or less total harmonic distortion of the power signal; and demodulating the direct current voltage offset to control a load.02-07-2013
20090290650TRANSMISSION LINE DIRECTIONAL COUPLING - Coupling signals to a transmission line over a plurality of taps includes coupling a first signal onto a transmission line at a first tap, coupling a second signal onto a transmission line at a second tap, and controlling a phase for at least a portion of the first signal relative to a phase for a corresponding portion of the second signal.11-26-2009
20080273601Communication Network Based on Master/Slave Architecture for Connecting Sensors and Actuators - A communications network for servo systems and the like comprises a controller, first and second slave nodes configured to respond to control signals from the controller and to send respective feedback control signals to the controller, and a control signal transmission line between the controller and the slave nodes; wherein communication between said controller and said slave nodes employs reflective signaling, and wherein the transmission line incorporates a router configured to route control signals from said controller to one or other of said first and second slave nodes in dependence on a further signal from said controller.11-06-2008
20100111201POWER LINE COMMUNICATION SYSTEM - A power line communication system which enables high quality communication, utilizing a pair of power lines 05-06-2010
20100111200SIGNAL TRANSMITTING APPARATUS PROVIDED WITH SIGNAL CORRECTION CIRCUIT FOR SUPPRESSING RADIATION OF ELECTROMAGNETIC WAVES BETWEEN TRANSMISSIN LINES - A voltage memory stores a signal level of a transmission signal from a signal generator at a timing of a clock signal, and outputs the transmission signal. A voltage difference detector detects a signal level of a transmission signal at a timing subsequent to the timing and detects a first signal level difference between the signal level and the signal level from the voltage memory. A maximum value detector, a voltage difference detector and bias voltage sources delay the transmission signal so as to keep a rise time of the transmission signal substantially within a predetermined value range by adding capacitances corresponding to the first signal level differences from the voltage difference detectors to transmission lines.05-06-2010
20100111199Device and Method for Communicating over Power Lines - A method and device for communicating over a power line is provided. In one embodiment, the device includes a multiband media access control (MAC) layer configured to select one of a plurality of frequency bands for communication and a multiband physical layer configured to communicate directly with said multiband MAC layer and to communicate over the power line via any one of the plurality of frequency bands. The multiband MAC layer may include a power control module configured to provide information to said physical layer to control the transmission power of data transmitted by said physical layer and a modulation control module configured to select one of plurality of modulation schemes for data transmitted by said physical layer. The physical layer may include a plurality of physical drivers with each physical driver configured to transmit and/or receive data in a different one of the plurality of frequency bands.05-06-2010
20100104028Current segmentation circuit for optimizing output waveform for high speed data transmission interface - The present invention provides a current segmentation circuit for optimizing output waveform from high speed data transmission interface, which comprises a four current sources controlled by four switches to segment current so as to control the rising and falling time of the high speed transmission data, and to match the delay of the current control signal and the delay of the data, wherein the four current sources are I1, I2, I3 and I4, and the current control switches are K1, K2, K3 and K4, wherein I1+I2=I3+I4, wherein the switches K1 and K3 control the current I1/I3 to flow into DP/DM line, and the switches K2 and K4 control the current I2/I4 to flow into DP/DM line. The present invention can depress overshoot and eliminate turning point in the waveform.04-29-2010
20100104029INDEPENDENT LINK(S) OVER DIFFERENTIAL PAIRS USING COMMON-MODE SIGNALING - Methods and apparatuses for using single-ended common mode signaling, additional data can be transferred in backward, forward, and/or both directions over an existing differential pair connection without adding extra wire.04-29-2010
20100104030COMMUNICATIONS DEVICE AND COMMUNICATIONS METHOD - A communications device 04-29-2010
20090154573Signal Demodulation - A method for processing an analog composite signal in a system has the steps of receiving a composite signal with at least one first signal component and at least one interfering signal component; filtering the composite signal with a filter having a transfer function H(s); sampling the filtered composite signal in periodic intervals wherein each periodic interval has n samples; forming a matrix equation representing the composite signal wherein the matrix equation has a signal vector with the at least first one signal component and the at least one interfering signal component and a matrix comprising weighted coefficients; solving the matrix equation to determine the at least one signal component; outputting the at least one signal component.06-18-2009
20120183084MASTER COMMUNICATION DEVICE IN A POWER LINE COMMUNICATION SYSTEM AND SLAVE COMMUNICATION DEVICE IN A POWER LINE COMMUNICATION SYSTEM - A communication system includes communication protocols that allow a single network or multiple neighboring networks to increase resource sharing and reduce mutual interference and increase their overall throughput. Various protocols apply to homogenous networks in which all power line communication (PLC) devices of multiple networks are interoperable with respect to full power line communication in a common PHY and to heterogeneous networks having non-interoperable PLC networks which do not employ a common PHY. As to heterogeneous networks, a protocol herein enables coexistence via a special signaling scheme. In homogeneous networks, all nodes can communicate with each other using a common PHY, so that information about one PLC network can be transferred to another PLC network. In heterogeneous networks, not all PLC networks can exchange information using their own native PHY.07-19-2012
20090304092Low offset input circuit and transmission system with the input circuit - A low offset input circuit and a signal transmission system which can accommodate a high-speed interface and achieve reduction of an offset voltage are provided. An offset voltage compensating circuit block 12-10-2009
20120219075Simultaneous Detection of Communications Signals on All Phases of a Multi-phase Power Distribution Network - A method of detecting a signal transmitted over one phase of a multi-phase power distribution system, components of the signal concurrently appearing on all phases of the system. The method includes detecting the components of each signal appearing on each phase, including neutral, of the system. Detected signals are provided to a signal processor which processes them to produce a detected signal which is a composite of all the components. The signals are combined by a weighted summation scheme that takes into account signal and noise correlation properties to simultaneously maximize signal strength and suppress noise. If other signals are present on other phases of the system, any resulting interference is canceled out from the detected signal to further improve the quality of the detected signal.08-30-2012
20120219074DATA TRANSMISSION SYSTEM BASED ON A POWER LINE - A data transmission system includes a sender, at least one receiver, a sender controller, and a receiver controller. The sender controller receives an AC signal from an AC power source via a first AC input port, receives data from the sender via a first data port, and processes the received AC signal according to the received data, and outputs a processed AC signal via a first AC output port. The receiver controller receives the processed AC signal from the sender controller via the second AC input port, powers the at least one receiver using the processed AC signal via the second AC output port, and converts the processed AC signal to corresponding data and transmits the data to the at least one receiver via a second data port.08-30-2012
20090041133COMMUNICATION PROTOCOL METHODS - Communication protocol methods for performing signal synchronization, data transmission, and data acknowledgement between a transmitting device and a receiving device are provided. The methods are characterized by a plurality of transmission lines which are used for performing signal synchronization, data transmission, and data acknowledgement by the communication protocol methods.02-12-2009
20130070863Method for supplying at least one bus user - A method for supplying at least one bus user via a control unit, in which data are transmitted to at least one bus user during at least one phase for data transmission and power is transmitted during at least one phase for power transmission, the at least one phase for data transmission and the at least one phase for power transmission being provided alternately, and the lengths of the phases for data transmission and/or the lengths of the phases for power transmission being set variably.03-21-2013
20120307918COMMUNICATION SYSTEM - A communication terminal is provided with: first and second transmission units transmitting signals on a communication line, first and second receiving units receiving signals from another communication terminal; and a communication method switching unit switching the signal communication method. The first transmission unit transmits an electrical current signal to the communication line. The first receiving unit receives a voltage signal obtained by converting, by means of a current/voltage conversion unit, the electrical current signal transmitted from the first transmission unit. The second transmission unit transmits a communication signal to the communication line as a voltage signal. The second receiving unit receives the voltage signal transmitted from the second transmission unit. The communication method switching unit switches between an electrical current transmission method in which transmission is performed by the first transmission unit, and a voltage transmission method in which transmission is performed by the second transmission unit.12-06-2012
20090290649SIGNAL PROPAGATION CIRCUIT AND SIGNAL PROCESSING APPARATUS - There provided are a substrate, on which are formed a signal propagation path to propagate a signal from an input end, in which signal propagation path a terminating resistance coupled to an output end substantially matches impedance; and a transmission line formed in anon-contact manner with the signal propagation path at a position halfway trough the signal propagation path. This arrangement realizes high-sensitivity detection of electric signals.11-26-2009
20120224645Device for Modifying an AC Voltage, AC Voltage Having a Superimposed Data Signal, Method for Data Transmission, Use of a Receiver and Communication Architecture - The invention relates to a device (09-06-2012
20130064309INTERFACE CIRCUIT FOR TRANSMITTING AND RECEIVING DIGITAL SIGNALS BETWEEN DEVICES - A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.03-14-2013
20130163682POWERLINE COMMUNICATION RECEIVER - Aspects of the present disclosure are directed towards a circuit-based apparatus for receiving data communications over power distribution lines that carry power using alternating current (AC). The apparatus has a processing circuit that is configured and arranged to receive an input signal representing the data communications over power distribution lines. For a quadrature encoded signal, the input signal is separated into intermediary signals representing a real portion of and an imaginary portion. The processing circuit can then determine timing information from the real portion of and the imaginary portion. The intermediary signals can then be decimated according to a variable rate of decimation that is responsive to the determined timing information. The decimated intermediary signals are also filtered.06-27-2013
20120195385COMMUNICATIONS ON POWER SYSTEMS - A power and data supply system that includes circuitry for supplying power and data to an output via a common transmission line is provided. The circuitry comprises a DC power source, a data signal source, a modulator configured to generate a modulated signal in dependence on the data signal, and an inverter, wherein the inverter is controlled by the modulated signal, such that the inverter generates an AC signal for output to the transmission line.08-02-2012
20090046785INTERFACE CIRCUIT - A transmission circuit (02-19-2009
20130163681COORDINATING POWER DISTRIBUTION LINE COMMUNICATIONS - Aspects of the present disclosure are also directed towards a method that includes maintaining a transmission period which has a start time and an end time synchronized to metrological time. Further, this method, in response to the start time, begins transmission of a frame, which includes a plurality of symbols. This transmission occurs over power distribution lines that carry power using alternating current (AC). This method also includes synchronizing a transmission time for each symbol of the plurality of symbols according to a time-based parameter of the AC. In response to reaching an end of the frame, a synchronization symbol period is determined for a synchronization symbol, as a function of the transmission times, for the plurality of symbols and time from the end of the frame to the end time. The synchronization symbol is then transmitted on the power distribution lines.06-27-2013
20130163683POWER LINE COMMUNICATION TRANSMITTER WITH AMPLIFIER CIRCUIT - In one embodiment, a transmitter circuit is provided for data transmission from endpoint devices to collector devices over power distribution lines. The transmitter includes an amplifier circuit configured to receive and convert a first data signal to a pulse density modulation (PDM) encoded signal using high frequency pulses that introduce high frequency components. A low-pass filter of the transmitter is configured to filter the high frequency components of the PDM encoded signal to produce a second data signal, which is an amplification of the first data signal. A coupling circuit of the transmitter is configured to communicatively couple the second data signal from the low-pass filter to the power distribution lines. The coupling circuit filters the frequency of the AC and prevents high voltage of the power distribution lines from damaging the transmitter.06-27-2013
20130163684COMMUNICATING OVER POWERLINE MEDIA USING SPOT BEAMFORMING - A system and method for communicating information through a powerline medium including at least three conductors, where the transmitter transmits at least two signals onto the powerline medium and the receiver receives one or more signals from the powerline medium. The transmitter adjusts the power transmitted into the powerline medium in order to set the adjusted transmit power to a predetermined level, e.g., a level that ensures power radiated from the powerline medium does not exceed a regulatory limit. The process of adjusting the transmit power may take into account a functional relationship between the transmitted power and properties of the channel.06-27-2013
20130163685COMMUNICATING OVER POWERLINE MEDIA USING EIGEN BEAMFORMING - A system and method for communicating information through a powerline medium including at least three conductors, where the transmitter transmits at least two signals onto the powerline medium and the receiver receives one or more signals from the powerline medium. The transmitter adjusts the power transmitted into the powerline medium in order to set the adjusted transmit power to a predetermined level, e.g., a level that ensures power radiated from the powerline medium does not exceed a regulatory limit. The process of adjusting the transmit power may take into account a functional relationship between the transmitted power and properties of the channel.06-27-2013
20080292007POWER SAVING TECHNIQUES FOR A PARTIAL FUNCTIONALITY COMMUNICATION LINK - Power saving techniques for a device including an active mode of operation for transmitting a first data stream of at least two data types over wires, and a low power partial functionality mode of operation for transmitting a second data stream over a subset of the wires used for transmitting the first data stream. The power saving techniques may utilize different modulation schemes, different throughputs, different symbol rates, or other techniques.11-27-2008
20120099661POWER LINE COMMUNICATIONS APPARATUS - Apparatus and system for communicating data via a power line. The apparatus comprises a transmitter comprising a modulator for generating a second digital signal based on input data; a digital buffer for amplifying the second digital signal to generate a third digital signal; a filter for filtering the third digital signal to generate an analog output waveform; and a coupler for coupling the analog output waveform to the power line.04-26-2012
20110280322DATA TRANSMISSION SYSTEM CAPABLE OF TRANSMITTING INTERRUPT SIGNAL WITHOUT INTERRUPT GATE PERIOD - A data transmission system comprises: a pair of transmission lines connecting a plurality of apparatuses; a bridge termination resistor connected between the transmission lines and having a resistance value matching a differential impedance of the transmission lines; a first switch connecting the bridge termination resistor to the transmission lines when being turned on, and disconnecting the bridge termination resistor from the transmission lines when being turned off; pull-up/down resistors connected between the transmission lines and a fixed voltage node, and having resistance values respectively matching characteristic impedances of the transmission lines, the fixed voltage node being a power supply or a ground; and second switches connecting the pull-up/down resistors between the transmission lines and the fixed voltage node when being turned on, and disconnecting the pull-up/down resistors from the transmission lines when being turned off.11-17-2011
20120288017METHOD FOR TRANSMITTING A SIGNAL FROM A TRANSMITTER TO A RECEIVER IN A POWER LINE COMMUNICATION NETWORK, TRANSMITTER, RECEIVER, POWER LINE COMMUNICATION MODEM AND POWER LINE COMMUNICATION SYSTEM - A method for transmitting a signal from a transmitter over a channel to a receiver on a Power Line Network, wherein said signal is OFDM-modulated on a set of sub-carriers, is proposed, wherein an OFDM tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said OFDM tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well.11-15-2012
20120288016VEHICLE AND COMMUNICATION DEVICE FOR VEHICLE - A PLC processing device includes: a filter; a first signal firm; a second signal line; and a PLC-ECU. The filter removes noise from a signal transmitted using a power line. The filter is provided on the first signal line. In contrast, the second signal line bypasses the filter. The PLC-ECU communicates using a signal which has passed through the filter while the power storage device is being charged. The PLC-ECU communicates using a signal which has bypassed filter while the charging of the power storage device is stopped.11-15-2012
20110286534DATA COMMUNICATION SYSTEM AND DATA COMMUNICATION DEVICE - A carrier wave is generated by using a zero-cross point of an AC power source voltage as a reference timing, a data communication device connected to a first power line performs digital modulation with a normal-phase carrier wave, and a data communication device connected to a second power line near the first power line performs digital modulation with an anti-phase carrier wave. In this manner, unwanted radiation caused by a leak radio wave can be reduced while using power lines of two systems in independent data communication.11-24-2011
20080310521Signal transmission circuit and signal transmission system - A signal transmission circuit includes a transmitting circuit for outputting a transmitting signal to a transmission line, a parallel circuit including a capacitor and a first resistance connected between an output terminal of the transmitting circuit and the transmission line, and a series circuit including an inductor and a second resistance connected between an output side of the parallel circuit and a ground.12-18-2008
20100034297Communication apparatus, transmission line communication chip and communication method - A communication apparatus according to the present invention includes a power supply that acquires a supply voltage from a power line connected from outside, a transmission control unit that transmits a pilot signal and signals subsequent to the pilot signal to the power line, a pilot signal detection unit that detects pilot signals transmitted to the power line by other apparatuses, and a timing adjustment unit that adjusts transmission timing of the pilot signal of the communication apparatus in accordance with that of the pilot signals transmitted by the other apparatuses.02-11-2010
20100034298RAIL VEHICLE INTERNAL INFORMATION NETWORK DEVICE - A rail vehicle internal information network device has modulating transmission devices (02-11-2010
20100124288DETECTION OF OUTBOUND MESSAGE SIGNALS IN A POWER LINE TWO-WAY COMMUNICATIONS SYSTEM - Improvements in the detection of TWACS outbound message signals. A first improvement involves matching some (or all) of the intermediate points in an outbound preamble occurring between bits of the preamble currently being detected. This reduces the possibility of a false synchronization and therefore decreases the probability of missing outbound message signals. A second improvement is to require some or all of the known preamble bits to exceed a predetermined threshold where both the thresh-old and which bits are adjustable. An additional approach is using 4-8 additional buffers in a transponder to detect preamble patterns in the outbound message. Each half cycle of the outbound message waveform requires entering a bit only into the buffers active for the particular frame of reference in which the message is being transmitted, since only buffers for that frame of reference are employed. The process continues until all bits specified to be sent, based on the length of the outbound message, are extracted. A CRC is then performed for the message. Using this method eliminates the problem of inbound messages being detected as outbound messages, and the resulting “blindness” of the transponder. It further makes the transponders less sensitive to noise which currently causes the transponder to detect a preamble when there is none, resulting in a valid outbound message being missed.05-20-2010
20090147863Input signal combiner system and method - Disclosed are various embodiments of an input signal combiner. In one embodiment, a receive stage receives a multi-phase waveform and separates the multi-phase waveform into a plurality of waveforms. Analog-to-digital converters convert the plurality of analog waveforms into at least one digital signal. At least one gain stage adjusts an amplitude of each of the digital signals and combines the amplitude adjusted digital signals into at least one gain adjusted combined signal. A signal extraction stage extracts an inbound signal from the at least one gain adjusted combined signal according to a demodulation scheme.06-11-2009
20080279289TRANSMITTER, RECEIVER, METHOD FOR TRANSMITTING, METHOD FOR RECEIVING, FIXED LENGTH SERIAL BURST DATA TRANSFER SYSTEM, SEMICONDUCTOR DEVICE, AND HYBRID SEMICONDUCTOR DEVICE - A transmitter included in a fixed length serial burst data transfer system in which the transmitter and a receiver are coupled to each other through at least two data transmission lines includes a two wire encoder encoding fixed length serial transmit data having binary digits to transmit data symbols each predetermined to correspond to each piece of the transmit data, inserting an identification symbol between the encoded transmit data symbols so as to be encoded to identify the transmit data symbols one from another, and transmitting the encoded transmit data to the receiver through the two data transmission lines during transmission, while transmitting a non-transmission symbol indicating a non-transmission state to the receiver through the two data transmission lines during non-transmission.11-13-2008
20100118983COMMUNICATION OVER A DC POWER LINE - A combined power and communication system, a transmitter, a receiver, and a method of communicating data over a power line are provided. A power supply is arranged to supply an output current to a power line and comprises a current source. The current source is arranged to supply a DC component to the output current and the power supply is further arranged to mod the output current according to a data signal. A load interface is arranged to receive a load at load terminals, to provide DC power from the power line to the load terminals, and to demodulate the current received from the power line to receive the data signal.05-13-2010
20100124289TRANSMISSION SUPPRESSION - A transmission suppression apparatus includes a first modulator that converts a symbol to a waveform. The apparatus further includes a first non-linear filter, configured to at least partially compensate for non-linear distortions of a transmission signal path. The apparatus further includes a first medium coupling device for coupling signals to a communication medium. The apparatus further includes a second medium coupling device for coupling signals from the communication medium. The apparatus further includes summing circuitry with a first input connected to an output of the second medium coupling device. The apparatus further includes cancellation circuitry, connected to a second input of the summing circuit, that converts the symbol to an analog waveform that is substantially 180 degrees out of phase with the analog waveform encoding the symbol on the first input to the summing circuit.05-20-2010
20130022135COMMUNICATION APPARATUS, COMMUNICATION METHOD AND INTEGRATED CIRCUIT - A communication apparatus communicates with another communication apparatus. The communication apparatus includes a first communication unit configured to receive serial data from a first communication apparatus that is serially connected to the communication apparatus; a modulation unit configured to modulate the serial data received by the first communication unit into data other than the serial data to generate transmission data; and a second communication unit configured to perform first unicast transmission which involves transmitting the transmission data by designating a second communication apparatus as a transmission destination and second unicast transmission which involves transmitting the transmission data by designating a third communication apparatus as a transmission destination.01-24-2013
20130022134METHOD AND APPARATUS FOR REDUCING JITTER - Aspects of the disclosure provide a method. The method includes causing a voltage level of a signal transmitted on a transmission line to be non-linearly modified to reduce a voltage variation at a target level, and providing the modified signal to a receiving circuit that is disposed on the transmission line. In an embodiment, the method includes causing the voltage level of the signal transmitted on the transmission line to be non-linearly modified to reduce a first voltage variation at a first target level corresponding to a first digital value and to reduce a second voltage variation at a second target level corresponding to a second digital value.01-24-2013
20130022132COMMUNICATION AMONG NETWORK DEVICES AT SUBSCRIBER PREMISES - One or more example techniques of this disclosure may be directed to providing a diversity of ways in which a network interface device may receive information from or transmit information to one or more of subscriber devices within a subscriber premises. For example, the network interface device may wirelessly transmit and receive information. The network interface device may also be coupled to a power supply device, and may receive information from and transmit information to the power supply device. The power supply device may receive information from and transmit information to the one or more of the subscriber devices utilizing wireless techniques and/or power line communication (PLC) techniques.01-24-2013
20100002778DATA TRANSFER SYSTEM - data transfer signal lines are provided between transmitting and receiving sides of data on n signal lines in order to reduce power consumption required for a data transfer even if the number of bits of data to be transferred increases. The transmitting side has an encoder for outputting a signal of a low potential to one signal line and a signal of a high potential to the other signal lines among the 01-07-2010
20100080306COMMUNICATION SYSTEM, COMMUNICATION DEVICE, COMMUNICATION TERMINAL, AND COMMUNICATION SETTING METHOD - A communication device that can easily be added to a network is provided. Processing performed by the communication device for which manipulation for joining a communication network was performed includes the steps of the communication device sensing manipulation of a manipulation panel, performing network detection processing when there is a network that has already been registered, performing pairing processing when there is no registered network, and starting a master operation when there is no registered network.04-01-2010
20120033747Systems and Methods for Powering Circuits for a Communications Interface - Embodiments include systems and methods of powering data communications transmitter circuitry using current sinked from biasing circuitry used to bias a transmission line between the data communications transmitter circuitry and data communications receiver circuitry. In some embodiments, the current sinked from the biasing circuitry is sourced by a power supply configured to power the data communications receiver circuitry. The current sinked from the biasing circuitry is then re-used to power the data communications transmitter circuitry. The data communications transmitter circuitry can be operated using less power overall than the prior art by re-using the current first used to bias the transmission line to power the data communications transmitter circuitry. Various embodiments include HDMI transceivers, DVI transceivers, and DisplayPort transceivers.02-09-2012
20120033744METHOD FOR TRANSMITTING DISCRETE ELECTRICAL SIGNALS - The invention relates to methods for transmitting information, and specifically to communication interfaces of electronic devices. The method makes it possible to increase the permissible number of transmitters power-supplied from a communication line, raise the distance and reliability of communication, and obtain better conditions of signal reception from differently located transmitters owing to switching off the current of power supply of transmitters and, accordingly, separating the current of signal transmission from the total current running along the communication line. Each transmitter is provided with its internal secondary power supply charged from the communication line. The voltage of the communication line power supply is decreased prior to signal transmission and restored upon completion of signal transmission.02-09-2012
20090257514SYSTEM AND METHOD FOR IMPROVING EQUALIZATION IN A HIGH SPEED SERDES ENVIRONMENT - A method and accompanying system are disclosed for tuning each channel of a high-speed SerDes link interface arranged in a configuration linking a local side to a remote side. The method includes transmitting a flow control packets from the local side to the remote side to change remote side transmission characteristics in a link channel; monitoring the bit error rate (BER) in the link channel; transferring additional flow control packets to adjust the remote side transmission characteristics; and processing the BER data at the local side to generate the remote side transmission characteristics for the link channel.10-15-2009
20110200123METHOD AND SYSTEM FOR RADIO-FREQUENCY SIGNAL COUPLING TO MEDIUM TENSION POWER LINES WITH AUTO-TUNING DEVICE - In one aspect, the present invention comprises a method for tuning a power line communication inductive signal coupling device comprising a coupler and a plurality of capacitors, the method comprising: passing a carrier frequency signal through the coupler; sensing an amplitude of the signal; and switching the capacitors until the amplitude of the signal reaches a maximum. In various embodiments: (a) the signal is transmitted by a second transmitter, and the method further comprises switching to a first transmitter for data transmission; (b) the signal is received by a receiver after passing through the coupler; and (c) the capacitors are switched by a relay controller receiving commands from a microprocessor.08-18-2011
20110268198DRIVER CIRCUIT, RECEIVER CIRCUIT, AND METHOD OF CONTROLLING A COMMUNICATIONS SYSTEM INCLUDING THE CIRCUITS - In a communications system for differential signals, a driver circuit is connected to a receiver circuit by a pair of differential signal lines. When data is not being transmitted, the differential signal lines are maintained at a predetermined electric potential, and when data is to be transferred, a differential signal is output at predetermined electric potentials. The receiver circuit switches between a power-down state and a normal state when detecting states of the electric potentials of the differential signal lines.11-03-2011
20090279617Signal transmission circuit - A signal transmission circuit is capable of reducing distortion that occurs during signal transmission. A digital output signal is transmitted from a terminal to a signal line via an output buffer circuit and an output impedance unit. The terminal is connected to an impedance variation unit via an impedance control unit. The impedance variation unit designates an impedance for terminating the signal line when the output data is changed from a high level H to a low level. A reflection occurring on the signal line can be prevented and a waveform distortion can be suppressed.11-12-2009
20090296830SIGNAL RECEIVER FOR RECEIVING DIFFERENTIAL SIGNAL VIA TRANSMISSION LINE - A signal receiver includes: a receiving circuit that receives a differential signal via a transmission line, which includes a pair of signal wires for transmitting the differential signal; and an impedance control circuit that controls an input impedance so as to reduce a common mode noise. The impedance control circuit includes a detection element for detecting at least one of a voltage, a current and an electric power of the common mode noise. The impedance control circuit controls the input impedance in accordance with change of the at least one of the voltages the current and the electric power of the common mode noise.12-03-2009
20120294377Beacon Selection in Communication Networks - Systems and methods for beacon selection in communication networks are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, using a terminal device deployed in a communications network, receiving a beacon transmitted by a switch device within the communications network and, in response to the terminal device having had a previous connection with the switch device, determining a connection time of the previous connection. The method may also include performing at least one of: adding the switch device to a blacklist in response to the connection time being smaller than a first threshold value, or selecting the switch device for subsequent communication in response to the connection time being greater than a second threshold value.11-22-2012
20100290540INTERFACE CIRCUIT - A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.11-18-2010
20110206140DEVICE FOR DETERMINING A COMMON-MODE SIGNAL IN A POWER LINE COMMUNICATION NETWORK - A device for determining a common-mode signal in a power line communication network. The device includes a first line, a second line, and a third line that are connected to a first terminal, to a second terminal, and to a third terminal, respectively. The first, the second, and the third terminal are configured to be connected to a phase line, a neutral line, and a protective ground line of the power line communication network, respectively. The device further includes a common-mode choke configured to couple out the common signal from the first, second, and third line, and the common-mode choke is connected to a termination impedance which is higher than an impedance of the power line communication network.08-25-2011
20080212691Signalling Method and Apparatus - An electrical signalling system comprises a modulator arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, the encoding being by way of the time between consecutive rising or consecutive falling edges, a transmission path for the signal from modulator to a demodulator, where the demodulator is arranged to detect the signal edge and store a record of the signal around that edge and compare a subsequent part of the signal with that record thereby to detect a like edge and detect the time difference between like edges. Such a system need not detect the precise position of the edge but detects that an edge has occurred within a short time frame, and retains an image of the signal during that period. That image is compared with a subsequent part of the signal, and where the subsequent signal differs only minimally from the record the system deems that a second like edge has occurred. Thus, although the precise position of the edge may or may not be detected by this system, the time delay between respective like edges is detected. The transmission path can be imperfect, for example inductive. The system is capable of sending recognisable signals along a three-phase electrical supply cable. The invention is particularly applicable to the supply of information from downhole sensors in the oil and gas extraction industries. Two signals can be sent simultaneously by also detecting unlike edges and the time difference therebetween. Multiple sources of data can be included consecutively.09-04-2008
20080273602DATA TRANSMISSION APPARATUS WITH INFORMATION SKEW AND REDUNDANT CONTROL INFORMATION AND METHOD - Apparatus and methods provide at least redundant control information such as control symbols and control data over respective channels, such as differential lanes, and skew at least the redundant control information in time between the plurality of transmission circuits. Non-control information such as video and/or audio data may also be skewed. Corresponding receiver circuits and methods are also disclosed.11-06-2008
20080273604TRANSMISSION METHOD AND SYSTEM FOR THE DISCRETE MULTI-MODULATION DATA - A transmission method and system of the discrete multi-modulation data, the method includes: generating, at a transmitting side, a first bit table according to data to be transmitted, wherein items of the first bit table include carrying data information on each line during this data transmission; modulating and transmitting, at the transmitting side, the data according to the first bit table to a receiving side; and demodulating, at the receiving side, the received data according to the first bit table to obtain corresponding data. With the transmission method and system for discrete multi-modulation data provided in embodiments of the present invention, the line rate and the transmission power on lines can be dynamically and timely adjusted according to information ratio of the line transmission, by using a dynamic bit table (BIT table) to carry variable information on the data carried by lines, thereby saving power resource.11-06-2008
20080273603DIFFERENTIAL SIGNAL TRANSMITTING APPARATUS AND DIFFERENTIAL SIGNAL RECEIVING APPARATUS - A differential signal transmitting apparatus for transmitting a differential signal through two transmission lines. The apparatus includes: transmitting-side board connecting terminals 11-06-2008
20080285661HIGH SPEED SERIAL LINK OUTPUT STAGE HAVING SELF ADAPTATION FOR VARIOUS IMPAIRMENTS - A high speed serial link structure and method are provided, comprising a data driver and a replica driver structure, the replica driver structure comprising a replica driver, a calibration engine and a peak level detector. The calibration engine compares a peak level detector output to a reference value and responsively performs a data driver adjustment, wherein the data driver adjustment comprises at least one of a driver biasing adjustment, a driver intermediate stage bandwidth adjustment and a driver equalization setting adjustment. In some embodiments, the calibration engine incorporates a comparator and a digital state machine; in other embodiments, it incorporates an analog operational amplifier.11-20-2008
20080304579Apparatus and method for automatic polarity swap in a communications system - An automatic polarity swap is implemented in a communications system. Two or more transceivers having differential inputs and outputs are coupled together through an interface, such as a backplane to form a communications system. In such a configuration, it is possible to cross-connect the differential data lines or signals at the interface, which will cause invalid data words to received at the second transceiver. Accordingly, the present invention includes an error check and correction module that detects invalid data words after parallel-to-serial conversion. More specifically, an error check determines if the parallel differential signal represents a valid data word. This can be done, for example, by storing and comparing valid data words in a memory such as RAM. If the received data word is valid, then no corrective action is taken. However, if the received data word is invalid, then the parallel differential signal is inverted using a logic circuit, which will correct the error if it is due to cross-connection of the differential lines at the interface or anywhere else.12-11-2008
20080304577POWER-LINE COMMUNICATION METHOD, POWER-LINE COMMUNICATION DEVICE, AND POWER-LINE COMMUNICATION SYSTEM - To provide a power-line communication method, a power-line communication device, and a power-line communication system, which can make communication with high communication efficiency even when the condition of a power line is changed. In step S12-11-2008
20080260049SERIALIZER AND DESERIALIZER - A system and method of transmitting and receiving bit serial information is disclosed. In a differential embodiment, serial bits are transmitted by a pair of line-matched differential drivers that are ac coupled to a two-conductor transmission line. A receiver is ac coupled to the line and receives the transmitted serial information via a high pass filter. The receiver includes a level-triggered latch that provides a threshold for receiving the serial information, changes state to reflect the received information, and then clamps the received information to the state of the latch. In a single-ended embodiment, the ac-coupled receiver receives the bit serial information via a high pass filter. The resistance for the filter is an active device that also provides a voltage threshold for the receiver. The received bit serial information changes the state of a device which then alters the threshold, via hysteresis, for the net bit of serial information.10-23-2008
20100290539INTERFACE CIRCUIT - A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.11-18-2010
20120195384POWER LINE COMMUNICATION APPARATUS AND NOISE DETECTION METHOD THEREOF - A power line communication apparatus and a noise detection method that are capable of detecting noises periodically generated without extending the dynamic range of an A/D converter used therein. The power line communication apparatus according to an embodiment of the present invention includes: a power detection unit that detects powers in communication slots used for transmitting and receiving data via a power line; a channel (transmission line) estimation unit that estimates the condition of a transmission channel on the basis of a difference between an average power through unused slots that are not assigned for transmitting and receiving the data among the communication slots and instantaneous powers regarding the unused slots; and a periodicity determination unit that detects a noise that is periodically generated on the basis of the estimated condition of the transmission channel and an alternating-current cycle in the power line.08-02-2012
20100142629HIGH SPEED TRANSIENT ACTIVE PULL-UP I2C06-10-2010
20100142628REMOTE ANTIJAMMING TRANSMISSION DEVICE AND METHOD FOR THE SAME - A remote antijamming transmission device and method for the same is provided. A signal current transmission line is between the host and the sub-machine arranged along a path of signal current transmission line and kept at a distance from the signal current transmission line. The sub-machine comprises a signal sensor component. The interval is a range where the signal sensor component may sense a signal current transmitted by the host connected to the sub-machine in a non-contact manner. Thus, no load effect is caused. The signal current transmitted by the host is not attenuated due to current bypass, so the effect of remote transmission is achieved. The transmission current in the signal current transmission line does not make the transmission signal to be attenuated even if the amount of sub-machines increases and then the current is divided. Unlimited amounts of sub-machines may be arranged near the signal current transmission line.06-10-2010
20130215983POWER LINE COMMUNICATIONS APPARATUS - A system for communicating data. In one embodiment, the system comprises a photovoltaic (PV) module; an inverter, coupled to the PV module, for receiving DC power from the PV module and converting the DC power to AC power; and an inverter controller communicably coupled to the inverter, wherein the inverter and the inverter controller communicate using power line communications (PLC).08-22-2013
20090129485Structure for transmitter bandwidth optimization circuit - A design structure embodied in a machine-readable medium used in a design process provides a transmitter having a frequency response controllable in accordance with an operational parameter, and may include a storage operable to store operational parameters for controlling a frequency response of the transmitter under each of a plurality of corresponding operating conditions. A sensor can be used to detect an operating condition. In response to a change in the detected operating condition, a stored operational parameter corresponding to the detected operating condition can be used to control the frequency response of the transmitter.05-21-2009
20090052559DIFFERENTIAL TRANSMITTER, DIFFERENTIAL RECEIVER, SIGNAL TRANSMITTER, AND SIGNAL TRANSMITTING SYSTEM - According to one embodiment of the present invention, it is possible to realize a signal transmitter which is capable of reducing power consumption and which can be easily designed. A differential transmitter block outputs differential output signals fixed to a predetermined logic signal to a differential receiver block and disconnects terminating resistors from a signal transmission path in an idle state. In the differential receiver block, a differential comparator outputs a logic determined by symbols of the differential output signal from the differential transmitter block, and an operating state detector detects the idle state upon detection that time successively outputting a predetermined logic by the differential comparator reaches a predetermined time, and controls switches so as to disconnect the terminating resistors from the signal transmitter in the receiving side upon detection of the idle state.02-26-2009
20090141816Method of Transmission Power Control and Communication Device - In a method of transmission power control, transmission powers of transmission channels and/or transmission power spectral densities are adjusted so as to improve the transmission characteristics.06-04-2009
20110222611 METHOD AND A SYSTEM FOR MANAGEMENT OF TRANSMISSION RESOURCES IN DIGITAL COMMUNICATION SYSTEMS - The present invention relates to a method for managing transmission resources in a digital communication system comprising an access network, such as a DSL system, implementing resource management for minimization of cross-talk interference in a cable or cable binder of the access network comprising a number, N of lines. It comprises the steps of: determining, by means of calculating means, for a respective of said lines, a relevant line set, comprising interference relevant lines, for said respective line, and applying, for the respective line, an algorithm for resource management using the determined relevant line set, thus reducing computational complexity of the resource management algorithm.09-15-2011
20130215981METHOD AND APPARATUS FOR THREE-PHASE POWER LINE COMMUNICATIONS - Method and apparatus for generating a balanced three-phase power line communication signal. In one embodiment, the method comprises generating a plurality of modulation signals based on at least one data stream; modulating a plurality of carrier signals by the plurality of modulation signals to generate a balanced three-phase PLC signal comprising a first phase signal, a second phase signal, and a third phase signal; and coupling the balanced three-phase PLC signal to a three-phase power line.08-22-2013
20130121425Coexistence Method by Requesting Access to the Channel - Systems and methods for implementing coexistence by requesting access to a channel in power line communications (PLC) are described. In an illustrative embodiment, a method performed by a PLC device, such as a PLC meter, may include detecting a communication from foreign PLC device on a PLC network in response to a foreign preamble received by the PLC device, determining whether a threshold back-off duration has been reached, and transmitting a channel access request in response to a determination that the threshold back-off duration has been reached.05-16-2013
20130121427SCALED POWER LINE BASED NETWORK - A power line communication network includes a first power line communication sub-network, a second power line communication sub-network, and an isolation filter disposed between first and second power line communication sub-networks. The isolation filter is configured to pass electrical power signals between the first and second power line communication sub-networks, and to block passage of data communication signals from the first power line communication sub-network to the second power line communication sub-network.05-16-2013
20130121428FUEL DISPENSING ENVIRONMENT UTILIZING RETROFIT BROADBAND COMMUNICATION SYSTEM - A fueling environment communication system for providing high bandwidth information via existing field wiring to a plurality of forecourt devices. The communication system according to this aspect comprises a back room communication module having a first plurality of Ethernet ports for connection to external devices using Ethernet communication and a second plurality of Ethernet ports. The back room communication module further comprises a plurality of modulation interface devices each connected on a first side to a respective one of the second plurality of Ethernet ports. A summing and isolation module having a high pass filter is connected to each of the modulation interface devices on a second side thereof to pass a modulated high frequency signal. The summing and isolation module further has a low pass filter through which low frequency legacy data can be passed and combined with said modulated high frequency signal. In addition, summing and isolation module is connectable via existing field wiring to communicate with forecourt devices in point-to-point fashion.05-16-2013
20090003464DIFFERENTIAL TRANSMISSION LINE CONNECTOR - A differential transmission line connector with little unwanted radiation noise is provided. A connector connects a differential transmission pattern for multiple transmission of a group of three differential signals and a differential transmission cable. The differential transmission pattern is provided with three signal lines, and the differential transmission cable also is provided with three signal lines. In a plane that is perpendicular to the longitudinal direction of the differential transmission pattern and the differential transmission cable, the signal lines are positioned at the apexes of an equilateral triangle. The connector is provided with three signal lines that connect, at identical lengths, the signal lines of the differential transmission pattern and the signal lines of the differential transmission cable, between a predetermined first plane of the planes that perpendicularly intersect the longitudinal direction of the differential transmission pattern and a predetermined second plane of the planes that perpendicularly intersect the longitudinal direction of the differential transmission cable.01-01-2009
20090225873Multiple Transmitter System and Method - Systems and methods of data transmission are disclosed. In an embodiment, at least two transmitters are selectively activated and at least one transmitter is deactivated at a serial interface to transmit data via at least two distinct lines.09-10-2009
20090245395TRANSMISSION CONTROL APPARATUS AND TRANSMISSION CONTROL METHOD - A transmission control apparatus detects worsening of an environmental condition of a transmission line for accommodating a plurality of circuits, and detects recovery of the environmental condition of the transmission line from the worsening. A first controller alters a transmission rate of data that is transmitted on the transmission line, from a first transmission rate to a second transmission rate, when the worsening of the environmental condition is detected, and which alters the transmission rate when the recovery of the environmental condition is detected. A second controller narrows down a bandwidth of a circuit of a lower priority when the bandwidth of any of the circuits having been accommodated by the transmission line becomes unaccommodatable because of the alteration of the transmission rate to the second transmission rate.10-01-2009
20090252235METHOD OF MODULATION MODE DETECTION FOR COMMUNICATION SYSTEM - A method of modulation mode detection for a communication system including at least a channel transmitting signals utilizing a target modulation mode is provided. The method includes: (a) selecting a default modulation mode for the channel; (b) estimating a timing frequency offset (TFO) of the channel of the communication system for obtaining at least a TFO value and storing the TFO value; (c) comparing the TFO value with a first predetermined value to generate a comparison result; and (d) determining whether the default modulation mode is substantially identical to the target modulation mode according to the comparison result.10-08-2009
20090316800Low speed access to dram - Embodiments provide access to a memory over a high speed serial link at slower speeds than the high speed serial links regular operation. An embodiment may comprise a memory apparatus with a differential receiver coupled to a protocol recognition circuit, a low speed receiving circuit that has a first receiver coupled with a first input of the differential receiver and a second receiver coupled with a second input of the differential receiver, wherein the low speed receiving circuit is coupled with the protocol recognition circuit, allowing the first and second receivers to access the protocol recognition block at a different frequency than the differential receiver.12-24-2009
20100014598ACTIVE COMPONENTS ON AN INTERNAL CABLE TO IMPROVE SIGNAL INTEGRITY - Disclosed is an internal cable system that communicates signals in an electronic device. The system uses a printed circuit board with active circuits that is connected to a standard communication cable. The printed circuit board is exposed to air flow from the cooling system of the electronic device for proper operation of the active components of the active circuits on the printed circuit board. The standard cable may include a SCSI internal cable or other similar signal communication cables. Signal integrity is enhanced using the active circuits that are mounted on the printed circuit board. Power is supplied to the printed circuit board through inactive conductors in the cable or conductors that would otherwise be used for grounding.01-21-2010
20080232479ELECTRONIC DEVICE FOR THE TRANSPORT OF NUMERICAL INFORMATION - An electronic device designed to transport digital information (“0”, “1”) over long distances, including a transmitter generating current pulses and at least one assembly of receivers converting the received current pulses into logic pulses which are compatible with the operation of standard electronic logic circuits. Each receiver includes a pair of magnetoresistive stacks containing at least one hard ferromagnetic layer and one soft ferromagnetic layer separated by a non-ferromagnetic interlayer, the hard layer of each of the magnetoresistive stacks being pinned in a magnetic orientation perpendicular to an easy-magnetization axis which is used as a reference for the soft layer of the same stack. The soft layer of each magnetoresistive stack has a magnetic orientation which can be modulated by the magnetic field generated by current pulses delivered by the transmitter so as to cause modification of the transverse resistance of the stack sufficient to trigger an electrical signal.09-25-2008
20100183081GENERIC BUFFER CIRCUITS AND METHODS FOR OUT OF BAND SIGNALING - Circuits and methods for a differential signal interface for coupling differential signals at a first frequency on a pair of opposite polarity signals to a multiple gigabit transceiver with generic buffers for receiving, transmitting or transceiving out of band signals at a second frequency lower than the first frequency are disclosed. Termination networks are provided coupling generic input buffers to respective ones of the pair of opposite polarity signals for receiving out of band signals where the opposite polarity signals are placed at voltages so that the differential voltage between them is below a threshold voltage. Methods for providing generic buffers with multiple gigabit transceivers for receiving and transmitting out of band signals on a differential signal interface are provided. Out of band signals are received when the out of band signaling protocol is not known.07-22-2010
20100189185SIGNAL TRANSMISSION SYSTEM AND RECEIVING APPARATUS - A digital audio signal, a channel clock, and a bit clock are transmitted to the receiving apparatus via a pair of signal lines. The digital audio signal is input to a D/A converter via a first comparator. The channel clock and the bit clock are received, separated with first and second separation circuits, and input to the D/A converter via the second and third comparators. A reference electrical potential of the second comparator is corrected such that it becomes half or approximately half of an amplitude of the channel clock depending on an electrical potential change of the output of a second differential signal receiving circuit. A system clock is generated based on the bit clock. The digital audio signal is converted into the analog audio signal based on the channel clock, the bit clock, and the system clock, and then the converted analog audio signal is output.07-29-2010
20100189186SIGNAL LINE ROUTING TO REDUCE CROSSTALK EFFECTS - A signaling system is disclosed. The system includes a transmitter comprising an encoder to encode a data signal such that the encoded data signal has a balanced number of logical 1s and 0s. The system also includes a receiver having a decoder to decode the encoded data signal, and a link. The link is coupled between the transmitter and the receiver to route the encoded data signal. The link comprises three or more conductive lines that are routed along a path in parallel between the encoder and the decoder, and wherein the link comprises segments, each segment comprising a routing change to reorder proximity of at least one pair of lines relative to any adjacent segment, with a sufficient number of segments such that each line has each of the other lines of the link as a nearest neighbor over at least a portion of the path.07-29-2010
20100177829Receiving device including impedance control circuit and semiconductor device including impedance control circuit - A receiving device includes a receiving circuit and an impedance control circuit. The receiving circuit receives a signal transmitted through a communication line. The impedance control circuit is coupled with the receiving circuit and has a detecting part. The detecting part detects a physical value of the signal and the physical value includes at least one of a voltage, an electric current, and an electric power. The impedance control circuit changes an input impedance based on the detected value so that a ringing of the signal is reduced.07-15-2010
20100177830CONFIGURABLE PRE-EMPHASIS DRIVER WITH SELECTIVE CONSTANT AND ADJUSTABLE OUTPUT IMPEDANCE MODES - Embodiments of the invention are directed to a single driver that can be used to transmit data with configurable levels of pre-emphasis, and can have either a constant or adjustable driver output impendence, selectively. One embodiment, directed to a driver apparatus, is associated with a digital communication channel for transmitting data signals, wherein at least one of the signals includes a higher frequency component. The apparatus comprises a first sub-driver that has a constant output impedance, and is selectively configurable to implement two or more different levels of pre-emphasis. The apparatus further comprises one or more second sub-drivers. A set of connector elements are provided for connecting the first sub-driver and each of the second sub-drivers in parallel relationship with one another, so that the first sub-driver and each of the second sub-drivers all have inputs that respectively receive a specified driver apparatus input signal, and all have outputs that are connected together to selectively provide a specified driver apparatus output impedance. The apparatus further includes a device that is connected to selectively disable and enable each of the second sub-drivers.07-15-2010
20100239028METHOD FOR TRANSMITTING PARALLELIZATION SIGNALS OF UNINTERRUPTIBLE POWER SUPPLIES - The present invention discloses a method for transmitting parallelization signals of uninterruptible power supplies, which firstly performs a serialization process on parallelization signals by a logic processing unit and then performs synchronous transmission of the parallelization signals of respective node units over a bus. The method for serial transmission of parallelization signals of uninterruptible power supplies according to the invention can be implemented with easy wiring and can achieve a strong anti-interference ability, ensure real time signal transmission over a guaranteed transmission distance and identify conveniently the failure of a parallelization line while satisfying fundamental transmission demands.09-23-2010
20100226446COMMUNICATION APPARATUS - A communication apparatus has an A/D converter which converts an analog signal which was received, into a digital signal, a converter which converts a reception signal so as to enable handling of phase information, a carrier detector which detects presence or absence of the reception signal, a synchronous circuit which extract synchronization timing from the reception signal, an equalizer which corrects the reception signal so as to cancel influence of a transmission path, a transmission path estimator which estimates a state of a power line transmission path, and a judging unit which judges the reception signal, which was amended by the equalizer, by use of a threshold value.09-09-2010
20130215982COMMUNICATION SYSTEM, COMMUNICATION METHOD, RELAYING DEVICE, AND RECORDING MEDIUM - A communication system between a vehicle and a communication device is disclosed. The vehicle transmits electricity supply information in an A-method to a relaying device like an electricity supply device through an electricity supply line. The electricity supply device receives the electricity supply information in the A-method, then, based on the electricity supply information in the A-method, generates electricity supply information in a B-method, and transmits to the communication device the electricity supply information obtained by conversion into the B-method. The communication device transmits electricity supply information in the B-method to the electricity supply device. The electricity supply device receives the electricity supply information in the B-method, then, based on the received electricity supply information in the B-method, generates electricity supply information in the A-method, and transmits the electricity supply information obtained by conversion into the A-method, to the vehicle through the electricity supply line.08-22-2013
20100246695SIGNAL-POWERED INTEGRATED CIRCUIT WITH ESD PROTECTION - The invention provides a signal-powered integrated circuit (IC). The IC comprises an integrated circuit die including a ground node, a supply node, and a first terminal for receiving a digital data signal having data content and a predetermined energy. A receive buffer formed on the integrated circuit die is connected to the first terminal and capable of receiving the data content associated with the digital data signal. A rectifier is also formed on the integrated circuit die. The rectifier includes a first diode connected between the first terminal and the ground node and a second diode connected between the first terminal and the supply node. The rectifier is configured to rectify the digital data signal and pass at least a portion of the digital data signal's predetermined energy to the supply node. Each of the first and second diodes is capable of withstanding an ESD impulse.09-30-2010
20100239029RECEIVING APPARATUS - A receiving apparatus includes: an electronic device; a connector provided to the electronic device; and a transmission cable connected to the connector. The electronic device includes a tuner unit that receives broadcast waves; and a differential signal processing unit that sends and receives data with the use of differential signals. The tuner unit and the differential signal processing unit are connected to the connector. The transmission cable includes at least two transmission lines that transmit differential signals, and the at least two transmission lines are capacitively coupled with each other at high frequency bands owing to capacitances among the at least two transmission lines. In addition, there is at least one common mode choke across two differential signal transmission lines inside the electronic device.09-23-2010
20110058614Wi-Fi/BPL Dual Mode Repeaters for Power Line Networks - A method and apparatus for maintaining network connectivity over power lines is disclosed. Such network connectivity is maintained even if various customers are covered by different power line networks or if one or more power lines in a network are unavailable to transmit data. More particularly, in order to bridge a gap in a power line network, one or more messages are extracted from a first node in a power line network and are then transmitted to a second node via free space transmission, illustratively wireless radio frequency (RF) transmission conforming to one or more of the 802.11a, b or g standards. When those messages are received at the second node, the message is injected back into the power line on the other side of a gap in power line coverage. This method of transmission backup will continue until power line connectivity is restore upon which the preferred method will be selected and used.03-10-2011
20100254464METHOD AND DEVICE FOR DATA PROCESSING IN XDSL SYSTEM - A method and a device for data processing between a first network element connected via several lines to several second network elements. The method includes the following steps: (i) if a line is trained, at least one other line is switched to a first mode; and (ii) if the line has been trained, the at least one other line is free to switch to a second mode.10-07-2010
20100195745Dynamic Transmitter Noise Level Adjustment for Digital Subscriber Line Systems - An apparatus comprising an artificial noise (AN) controller coupled to a digital subscriber line (DSL) transmitter and configured to adjust an AN level for a signal transmitted by the DSL transmitter, wherein the AN level is adjusted based on an actual signal to noise ratio (SNR) of the signal from the receiver to achieve a desired SNR for the signal. Also disclosed is a method comprising maintaining a data rate in a line at about a desired level by adjusting an AN level in a transmitted signal based on a SNR of a received signal.08-05-2010
20120033745Power device and safety control method thereof - An air conditioner includes at least one indoor unit and a wired controller connected to the indoor unit through two lines to receive power from the indoor unit and to perform data communication with the indoor unit. Each of the indoor unit and the wired controller includes a communication unit that modulates a low-frequency communication signal into a high-frequency communication signal and transmits the high-frequency signal and demodulates a received high-frequency signal into a low-frequency signal. When a plurality of indoor units and a wired controller perform communication, a communication signal is transmitted after being modulated into a high-frequency signal and linking the high-frequency signal with DC power. This reduces the inductance of an inductor required to separate the linked high-frequency signal into DC power and a communication signal and the capacitance of a capacitor required to link the signal with DC power, reducing PCB size and inductor and capacitor costs.02-09-2012
20090074085COMMUNICATION DEVICE, MULTI CARRIER TRANSMISSION SYSTEM, COMMUNICATION METHOD, AND RECORDING MEDIUM - The present invention provides a communication device that may suppress unnecessary break points. A communication device 03-19-2009
20090190673Power line communication apparatus, integrated circuit for power line communication and transmission/reception methods - Transmitter 07-30-2009
20090323830CURRENT MODE CIRCUITRY TO MODULATE A COMMON MODE VOLTAGE - In some embodiments, a chip includes transmitters to transmit differential signals on conductors; and current mode circuitry to selectively modulate a common mode voltage of the differential signals to communicate data. In other embodiments, a system includes a first chip to transmit first and second differential signals on conductors, and a second chip. The second chip includes receivers to receive the first and second differential signals from the conductors and provide received signals representative thereof, and current mode circuitry to selectively modulate a common mode voltage of either the first or second differential signals to communicate data and wherein the first chip includes common mode detection circuitry to detect changes in the common mode voltage. Other embodiments are described and claimed.12-31-2009
20090110084RECEIVER TERMINATION CIRCUIT FOR A HIGH SPEED DIRECT CURRENT (DC) SERIAL LINK - A method for matching receiver and transmitter common-mode voltages for a high-speed direct current (DC) serial connection between the receiver and the transmitter includes measuring, at the receiver, a common-mode voltage of the transmitter. The common-mode voltage of the transmitter is an average of a voltage signal transmitted by the transmitter and received by the receiver. The method further includes comparing the common-mode voltage of the transmitter with a common-mode voltage of the receiver. The method further includes maintaining the common-mode voltage of the receiver at a first level at which the common-mode voltage of the receiver substantially matches the common-mode voltage of the transmitter.04-30-2009
20100296589INFORMATION PROCESSING APPARATUS, ENCODING METHOD AND FRAME SYNCHRONIZATION METHOD - Provided is an information processing apparatus including a frame generator for generating a frame by adding, to data, a header indicating a beginning position of the data, an encoder for encoding the frame generated by the frame generator according to a specific coding scheme, and generating encoded data expressed by mutually different first and second-bits, a cycle changer for changing a coding cycle in a header section by controlling the encoder, and a line coding unit for performing line coding on the encoded data generated by the encoder, and generating an encoded signal which expresses the first-bit in a form of a plurality of first levels and the second-bit in a form of a plurality of second levels different from the first levels such that a same level does not occur consecutively and for which a polarity of the level is inverted every half cycle of a clock.11-25-2010
20100309992Device and System for Preserving, Transmitting and Receiving HDMI or A/V Signals Along a Power-Line Communication Network - A combination noise-filter, surge protections circuit and HDMI communication device. HDMI specific noise filters, surge protection circuits, PLC modem and encoding/decoding apparatus are connect to, or integrated into, power outlets in a home or other wired building enabling a high bandwidth powerline communication network.12-09-2010
20090213941METHOD AND DEVICE FOR IMPLEMENTING DATA TRANSMISSION - A method of implementing data transmission is provided, which comprises: A) comparing bit by bit data to be transmitted currently with previous transmitted data, and counting to obtain total number of different bits; and B) when it is determined that the total number of different bits is more than a half of number of bits of the data to be transmitted currently, inverting the data to be transmitted currently and then converting the inverted data into a differential signal for transmission. A device of implementing data transmission is also provided. The method and device provided by embodiments of the present invention can minimize electromagnetic interference during data transmission.08-27-2009
20110007824SYSTEM COMMUNICATION SYSTEMS AND METHODS FOR ELECTRIC VEHICLE POWER MANAGEMENT - A system and method that minimizes network traffic consumption in a power flow management system is described. A minimization system may include a network to communicate device information and power flow information between the power flow management system and the devices. The power flow management system reduces consumption of the traffic traversing the network via a network traffic consumption reduction technique. In addition, this application discloses a system and method for communications protocol translation in a power flow management system that includes networks which connect electric devices and electric power supplies. One network utilizes a communications protocol that is different from the communications protocol utilized by another network. A communications protocol translation device communicates with the networks, and formulates messages from one communications protocol to the other communications protocol. The reformulated messages pass from one network to another network.01-13-2011
20110116555POWER LINE COMMUNICATION METHODS AND DEVICES - A power line communication method for realizing data communication between at least one first or sending power line communication partner device and at least one second or receiving power line communication partner device. The method checks transmission conditions of a plurality of possible communication channels, thereby generating transmission condition data descriptive for the communication conditions of the respective possible communication channels. Additionally, communication conditions of the plurality of possible communication channels are selected as actual communication conditions based on the transmission condition data.05-19-2011
2013015611510 Gbps Coaxial Cable Networking System - Systems and methods are described for providing a throughput of 10 Gbps or more in a coaxial cable network and which operate at high frequencies above the existing services on home coax in the range 2 GHz to 10 GHz, or more. The network uses a wide signal bandwidth, in the range, for example, of 8 GHz. Operating above the CATV band and satellite services, the network coexists with these services without mutual interference. The system could be used in networking systems, such as MoCA 3 and Access systems. This is achieved by using a splitter with a low loss and low isolation in the 2-10 GHz range at the point-of entry (POE) of the network signal. Alternatively, an active node to provide a signal booster or a repeater function at the point-of-entry (POE) can be used.06-20-2013
20130156117Multi-Reference Clock Synchronization Techniques - Efficient synchronization techniques that support multiple reference clocks in an EQAM device. Consider a plurality of different modulators in the EQAM device receiving data from a corresponding plurality of different sources having corresponding different timing references (i.e., different source reference clocks). To accommodate this, the modulators all operate using a common system clock, and each modulator is provided with a phase synchronizer. The phase synchronizer synchronizes the modulated symbol phases to the corresponding reference clock.06-20-2013
20120243620METHOD AND APPARATUS FOR DIGITAL DATA TRANSMISSION - An expansion of known serial data links, for example ETHERNET, published in IEEE802.3, for directly transmitting random events without having to carry out synchronization with a clock signal or having to wait for a cyclical transmission time. Two different, random events are represented using two differently coded individual pulses and are transmitted in an event-controlled manner. A jitter-free latency of 45 ns between the event and its reception is possible over a line length of 8 m, for example. The expansion is particularly suitable for the short, digital data links between a node and a plurality of modules, as are required in modern electrical discharge machines, machine tools and similar electronic systems.09-27-2012
20120134427METHOD OF TRANSMITTING SYMBOLS - A method of transmitting symbols of a digital transmission constellation from a set thereof, ordered from a smallest to a greatest number of bits per symbol, may include identifying a first constellation from the set that is configured to communicate with a threshold error rate and has a greatest signal-to-noise ratio smaller than a signal-to-noise ratio of a received signal. The method may also include identifying a second constellation from the set that corresponds to a constellation with a number of bits per symbol immediately greater than the first constellation. The method may further include determining first and second probabilities of use of the first and second constellations that would generate an expected number of erroneous bits corresponding to the threshold error rate. The method may further include transmitting a symbol with a constellation selected randomly between the first and second constellations according to the first and second probabilities, respectively.05-31-2012
20090147862Semiconductor Device and IC Card Having The Same - An IC card (06-11-2009
20090323829Multi-Wideband Communications over Power Lines - Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.12-31-2009
20090323828INFORMATION PROCESSING APPARATUS AND SIGNAL DETERMINATION METHOD - There is provided an information processing apparatus, including a signal receiver that receives a signal encoded in such a way that a signal containing a first bit value and a second bit value, wherein the first bit value is represented by first amplitude values, the second value is represented by a second amplitude value, and polarity of the amplitude value is reversed in each period, a conversion processor that performs conversion to add a signal after being delayed by delaying an input signal by one period to the signal before being delayed on a signal received by the signal receiver, an inversion processor that performs inverse processing of the conversion on the signal output from the conversion processor, and an input data decoder that decodes an input data by determining the first and second values based on the amplitude value of the signal output from the inversion processor.12-31-2009
20100054346Information Processing Apparatus, Signal Transmission Method and Decoding Method - There is provided an information processing apparatus, including a data encoding unit that generates an encoded signal in partial response mode having a transmission speed Fb by encoding input data; a clock signal addition unit that synchronously adds a clock signal at frequency Fb having an amplitude value larger than that of the encoded signal to the encoded signal generated by the data encoding unit; and a signal transmission unit that transmits the encoded signal obtained by the clock signal being added by the clock signal addition unit through a predetermined transmission line.03-04-2010
20100195744METHOD FOR TRANSMITTING A SIGNAL OVER A POWER LINE CHANNEL AND POWER LINE COMMUNICATION MODEM - A method for transmitting a signal over a power line channel and a corresponding power line communication modem, wherein the signal is OFDM-modulated on a set of sub-carriers, the sub-carriers being separated by a frequency separation. The method includes receiving a noise signal via the power line channel, determining respective signal values of the received noise signal within a plurality of fine frequency bands with a first resolution bandwidth, wherein the first resolution bandwidth is smaller than the frequency separation, determining a first disturbed frequency band of the plurality of fine frequency bands based on the respective signal values, and notching the signal in the first disturbed frequency band before transmitting the signal.08-05-2010
20100061467INFORMATION PROCESSING APPARATUS, ENCODING METHOD AND SIGNAL TRANSMISSION METHOD - There is provided an information processing apparatus including a data encoding unit that generates an encoded signal by encoding first input data based on CMI (Coded Mark Inversion) coding rules and encoding second input data using errors of the CMI coding rules, a clock signal addition unit that generates a transmission signal by synchronously adding a clock signal having an amplitude value larger than that of the encoded signal to the encoded signal generated by the data encoding unit, and a signal transmission unit that transmits the transmission signal generated by the clock signal addition unit.03-11-2010
20110075740Configurable Differential to Single Ended IO - An electronic system having a power efficient differential signal between a first and second electronic unit. A controller uses information, such as compliance with data transmission rate requirement and bit error rate (BER) versus a BER threshold to control power modes such that a minimal amount of power is required. Amplitude of transmission and single ended or differential transmission of data are examples of the power modes. The controller also factors in a failing phase in a differential signal in selecting a minimal power mode that satisfies the transmission rate requirement of the BER threshold.03-31-2011
20120201312POWER LINE COMMUNICATION APPARATUS INCLUDING AC POWER SOCKET - A power line communication apparatus (08-09-2012
20110069766METHOD OF COMMUNICATING WITH USING ELECTRIC POWER LINE FOR MOBILE BODY - A method of communicating with using an electric power line for a mobile body so that a first device transmits first information to a second device includes: coupling the first device with multiple first coupling points in an electric power line network; coupling the second device with multiple second coupling points; transmitting second information about transmission characteristics from the second device to the first device; modulating multiple transmission waves to be transmitted from the first device via the transmission points by the first device with using a transmission diversity method based on the second information; and demodulating multiple reception waves received by the second device via the reception points by the second device with using a reception diversity method.03-24-2011
20110150105COMMUNICATION APPARATUS, INTEGRATED CIRCUIT, AND COMMUNICATION METHOD - A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T06-23-2011
20110150104COMMUNICATION APPARATUS, INTEGRATED CIRCUIT, AND COMMUNICATION METHOD - A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T06-23-2011
20110026612RECEIVER FOR SIGNAL COMMUNICATION APPARATUS AND RELATED SIGNAL COMMUNICATION APPARATUS - A receiver of a signal communication apparatus; the apparatus including a transmitter adapted to transmit coded signals, the receiver for receiving the signal and a wireless interface interposed between the transmitter and the receiver and having a transmitting antenna and a receiving antenna. The receiver includes a decoder configured to decode the received signal and circuitry coupled to the receiving antenna and capable of triggering the decoder if the value of the received signal is outside a logical hysteresis having a first logic threshold having a value smaller than the value of the direct current component of the received signal and a second logic threshold having a value greater than the value of the direct current component of the received signal.02-03-2011
20130121426TWACS PULSE INDUCTOR REVERSAL CIRCUIT - A circuit (C05-16-2013
20110255611Powered Patch Panel - A powered patch panel (PPP) is disclosed that inserts power in mid-span regions of a network and provides fault-tolerance at the power supply level and the power-plane level. Information such as physical location, port status and policy enforcement information may be locally stored and utilized by a processor of the PPP to achieve network control and monitoring. A network management system and/or element management system may be provided to interface with processors of PPPs to achieve network monitoring, control and policy enforcement goals.10-20-2011
20080304578TRANSMISSION CABLE - A transmission cable that has three signal lines, and in which there is little unwanted radiation noise, is provided. In a section that is perpendicular to the longitudinal direction of the differential transmission cable, the distance between any two signal lines of the three signal lines is equal to a predetermined value. The differential transmission cable is twisted in its longitudinal direction. The differential transmission cable further includes a dielectric core line, and the signal lines are formed on the surface of the dielectric core line. In the differential transmission cable, the signal lines are formed in a helix in the longitudinal direction of the dielectric core line.12-11-2008
20090110085HIGH BANDWIDTH DATA TRANSPORT SYSTEM - A method of data transmission includes representing data using at least one amplitude modulated impulse based on an ultra wideband impulse, sending the at least one impulse over an electrically conductive guided media, receiving the at least one impulse over the electrically conductive guided media, recovering the data from the at least one amplitude modulated impulse after receiving the at least one impulse over the electrically conductive guided media. The at least one impulse coexists on the electrically conductive guided media with wave based transmissions sent over the electrically conductive guided media.04-30-2009
20100296590Communication device and method for detecting broadcast wave to be performed by communication device - A communication device includes a data communication unit that sends a communication signal, which is obtained by at least modulating transmission data, to a power line; a zero-crossing-point detector that detects a zero crossing point of an alternating voltage applied from the power line; a transmission unit that sends a coexistence signal to the power line in a coexistence region that starts at a time based on the zero crossing point, the coexistence signal having information for allowing systems to be present on the power line; a receiving unit that detects the coexistence signal from the power line in the coexistence region; a setting unit that sets a detection period for performing a detection operation for detecting a broadcast wave in accordance with the coexistence signal; and a broadcast-wave detector that detects a broadcast wave by performing frequency analysis on a signal on the power line in the detection period.11-25-2010
20120147978CABLE REDUCTION - The present invention provides combining and separation circuitry, which allows multiple signals in different frequency bands to travel in either direction over a single cable and be combined and separated as desired. In one embodiment, the combining and separation circuitry includes first, second, third, and fourth ports. The first port is configured to send or receive signals in a first frequency band, the second port is configured to send or receive signals in a second frequency band, and the third port is configured to send or receive DC signals, baseband signals, or a combination thereof. The fourth port is configured to be coupled to a cable in which the signals in the first and second frequency bands, as well as the DC and/or baseband signals, can be sent in either direction.06-14-2012
20100322322POWER-LINE CARRIER COMMUNICATION APPARATUS - The invention provides a power-line carrier communication apparatus including a transmission unit with a signal point mapping device for mapping a plurality of bit streams produced from transmission data, a wavelet inverse transforming device for modulating the respective sub-carriers by wavelet waveforms which are orthogonal to each other for producing temporal waveform series data, and a D/A converter for converting the temporal waveform series data into an analog temporal waveform series signal; and a reception unit with an A/D converter for obtaining sampling-series waveform data from a power-line communication signal, a wavelet transforming device for wavelet-transforming the sampling-series waveform data into signal point data of the respective sub-carriers, and a symbol judging device for judging bit streams mapped by the signal point mapping device by inverse-mapping a plurality of these signal point data, and for synthesizing the judged bit streams with each other as a reception data series.12-23-2010
20110038426TRANSMISSION SYSTEM AND TRANSMISSION METHOD - In order to optimize with high accuracy parameters that a fast I/F has, optimization by training is required. Regarding these parameters, their optimum values vary to an operating frequency band and a power supply voltage of the I/F. In order to lower the operating frequency band and lower the power supply voltage for reduction of power consumption, re-training that requires a time becomes needed. By obtaining in advance optimum combinations of the operating frequency band, the power supply voltage, and various parameters of the I/F for various parameters of the I/F and then by making a table with them, it is possible to optimize the parameters in a short time by referring to the table in optimizing the power supply voltage. By the optimization of the parameters in a short time being enabled, it is also possible to perform dynamic optimization during an operation of the device.02-17-2011
20110038425DIFFERENTIAL DATA TRANSFERRING SYSTEM AND METHOD USING THREE LEVEL VOLTAGES - A differential data transferring system and method uses three level voltages to simultaneously transfer three signals (for example, two data signals and one clock signal) across two transfer line sets (i.e., four transfer lines). Therefore, the differential data transferring method increases transferring efficiency by using fewer transfer lines. Also, according to the differential data transferring system and method, one of two transfer lines forming a transfer line set is controlled to a middle voltage level, while the other transfer line is controlled to either a high voltage or a low voltage. Accordingly, the voltage difference between the two transfer lines may be maintained at a constant amplitude. Additionally, the difference between first and second dividing voltages DC02-17-2011
20100329363Wake-Up Circuits, Devices and Methods for Galvanic Isolators - According to one embodiment, there is provided a method of reducing the amount of power consumed by a galvanic isolator. A transmitter transmits a wake-up signal to a receiver located across an isolation medium when the transmitter is ready or preparing to transmit data or power signals to a receiver, which is operably connected to a sensing circuit. The sensing circuit receives the wake-up signal through the isolation medium, which may be operably connected to and powered substantially continuously or intermittently by a first power source. In response to the sensing circuit receiving the wake-up signal, the receiver is powered up from a sleep mode to an operating mode. After a period of time t12-30-2010
20110135014Transmission device for differential communication - In a transmission device for differential communication, a first cathode-side element part is coupled between a first communication line and a cathode-side power supply line, a second cathode-side element part is coupled between a second communication line and the cathode-side power supply line, a first anode-side element part is coupled between the first communication line and an anode-side power supply line, and a second anode-side element part is coupled between the second communication line and the anode-side power supply line. A driving portion drives the element parts based on transmission data input from an outside. A target potential generating portion generates target potentials of the element parts based on potentials of the first communication line and the second communication line.06-09-2011
20080310520Transmission Links - A method includes providing first values depending on crosstalk among a plurality of transmission links. A number of crosstalk channels are selected from a plurality of crosstalk channels interfering with signal transmission on transmissions links. The selecting depends on the first values.12-18-2008
20080219359Method and system for reducing common mode noise interference in a differential communication channel - A data transmission method includes providing, by a current source, a current to the first conductor while isolating the second conductor from the current source, to thereby transmit a first binary digit; and, responsive to a command to transmit a second binary digit, (i) decreasing from a maximum value to zero an amount of the current provided to the first conductor and (ii) increasing from zero to a maximum value an amount of the current provided by the current source to the second conductor. The decreasing and the increasing are performed simultaneously, in such a manner that the amount of the current provided to the first conductor decreases at the same rate as the amount of the current provided to the second conductor increases, and such that each of a first signal corresponding to the current provided to the first conductor and a second signal corresponding to the current provided to the second conductor has a transition edge having a leading section, a midsection and a trailing section, with the midsection of the transition edge having an average slope that is greater than an average slope of the leading section of the transition edge and that is greater than an average slope of the trailing section of the transition edge. A system is provided which includes a switching system, which is operatively interposed between the current source and the differential communication channel, and a controller which is operative to issue one or more signals control signals to the switching system to implement the data transmission method.09-11-2008
20110096848"Supply-Less" HDMI Source Terminated Output Stage With Tuned Wide-Range Programmable Termination - A “supply-less” transmitter output stage is provided for a transmitter. This transmitter output stage can include a tunable source termination and a reference voltage generator. The tunable source termination can be coupled between a differential pair of the transmitter. The reference voltage generator can advantageously generate reference voltages from a far-end termination. These reference voltages provide a way of translating the internal supply voltage level to the pad voltage level to enable/disable the tunable source termination. Also, it provides a way to minimize leakage and minimize the junction stress of switching transistors in the tunable source termination as well as the transmitter. The dependency between the reference voltages and the far-end termination voltage makes this design more portable to other supply voltages and other technologies specifications other than HDMI.04-28-2011
20100166085LIN NETWORK, INTEGRATED CIRCUIT AND METHOD THEREFOR - A LIN network comprises a transmit driver for communicating on a single communication bus. A slope control module is operably coupled to a supply voltage and arranged to identify a voltage transition, and in response thereto and via control of the transmit driver selectively apply one of: a first voltage transition mode comprising a constant DV/DT slope transition, or a second voltage transition mode comprising a fixed time transition.07-01-2010
20100067586Method and Apparatus for Transmitting Data With Reduced Coupling Noise - A first integrated circuit is coupled to a first connector. A second connector is coupled to the first connector through multiple conductors, in which alternating pairs of conductors are reversed. A second integrated circuit is coupled to the second connector through a second group of conductors. The first integrated circuit includes multiple differential drivers and the second integrated circuit includes multiple differential receivers. The inductive coupling coefficient of the first device is modified to be substantially the same as the inductive coupling coefficient of the second device.03-18-2010
20110051819SYSTEM AND METHOD FOR TRANSMITTER ELECTROMAGNETIC INTERFERENCE (EMI) REDUCTION - A device for Electro-Magnetic Interference (EMI) reduction in an Ethernet system has an Ethernet compatible device. The Ethernet compatible device has a filter for adjusting a signal outputted by the Ethernet compatible device for EMI reduction.03-03-2011
20090168905Decoding of LVDS Protocols - An embodiment of the invention is directed to a system for processing a plurality of encoded signals carrying data. The system includes an electronic circuit configured to receive the encoded signals from one or more external devices, wherein the data are encoded in the encoded signals according to one or more of a plurality of protocols. The system further includes a processor configured to receive the encoded signals from the electronic circuit, and to extract the data from the encoded signals by decoding the encoded signals. The processor is configured to perform decoding according to the plurality of protocols.07-02-2009
20120307916TRANSMITTING APPARATUS USING DC CARRIER AND RECEIVING APPARATUS USING DC CARRIER - A transmitting apparatus using DC carrier includes a microcontroller, a transmitting-side communication circuit, an induction reactance unit, a DC isolation unit, and a DC power and signal output terminal. An information signal is received by the microcontroller. The information signal is transferred to a communication signal by the transmitting-side communication circuit. A DC power is received by the induction reactance unit. The DC isolation unit avoids the transmitting-side communication circuit to be impacted by the DC power. The communication signal and the DC power are transmitted from the DC power and signal output terminal to an electric wire. The transmitting apparatus using DC carrier of the present invention can transmit the DC power and the communication signal at the same time with an electric wire to save labor cost and electric wire cost.12-06-2012
20120307917CONNECTING VARIOUS WIRELESS TERMINALS OVER POWER LINES - A method of extending the coverage of a wireless communication network having two or more nodes communicating over power lines network is provided herein. The method includes: providing the nodes with respective adapters, each one of the adapters coupling its respective node with the power lines network and being further operable in at least one of: receiving mode, transmitting mode; selecting one or more time-division duplex frequency channel or two or more frequency-division duplex frequency channels for communication over the power line media, such that less interfered frequencies are used, to maintain or to yield an increase in wireless communication performance between the nodes; broadcasting over the power line, via at least one of the adaptors, signals or information indicative of a central frequency point for each one of the selected frequency channels; and establishing a communication link over the power lines network between the nodes via the adaptors.12-06-2012
20100091889Method and Apparatus to Select a Profile of a Digital Communication Line - A method of selecting a profile of a digital communication line includes determining a first throughput value of the digital communication line, the first throughput value associated with a first profile and determined based at least in part on a count of code violations. The method includes determining a second throughput value of the digital communication line that is associated with a second profile, the second throughput value determined based on the count of code violations. The method includes identifying a selected profile that has a greater corresponding throughput value. The first throughput value is greater than the second throughput value when the count of code violations is less than a threshold and the first throughput value is smaller than the second throughput value when the count of code violations is greater than the threshold.04-15-2010
20100054345High Speed Digital Galvanic Isolator with Integrated Low-Voltage Differential Signal Interface - Various types of high-speed digital galvanic isolators and corresponding integrated low voltage differential signal (“LVDS”) interfaces are disclosed herein. According to some embodiments, phantom power is provided to one side of a galvanic isolator from the other side of the isolator via a twisted pair cable with shielding interconnecting the two sides, and therefore eliminate the need to provide power to both sides of the galvanic isolator through different power supplies or by way of separate physical wiring being routed and connected to the two opposing sides of the isolator. Such phantom power supply configurations reduce cost, lower power consumption, and increase the number of engineering design options available in a device where high speed serial data communication with low noise are required.03-04-2010
20090202003COMPENSATION OF ETHERNET TRANSMIT BASELINE WANDER - Compensation of transmit baseline wander in data transmission on a network. In one aspect, compensating for baseline wander includes receiving a signal to be transmitted by a transmitter, where the transmitter is operable with a higher-speed transmission standard requiring magnetics a first open circuit inductance. The signal is processed to compensate for a transmit baseline wander in the signal, the transmit baseline wander associated with a lower-speed transmission standard that requires magnetics with a second open circuit inductance that is higher than the first open circuit inductance. The processed signal is to be provided for transmission on a twisted pair cable of the network.08-13-2009
20080205531Adaptively configurable class-A/class-B transmit DAC for Transceiver emission and power consumption control - A power efficient and reduced electromagnetic interference (EMI) emissions transmitter for unshielded twisted pair (UTP) data communication applications. Transmit data is processed by a digital filter. The digital filter output data is converted to a current-mode analog waveform by a digital-to-analog converter (DAC). The digital filter is integrated with the DAC binary decoder in a memory device such as a ROM with time multiplexed output. DAC line driver cells are adaptively configurable to operate in either a class-A or a class-B mode depending on the desired operational modality. A discrete-time analog filter is integrated with the DAC line driver to provide additional EMI emissions suppression. An adaptive electronic transmission signal cancellation circuit separates transmit data from receive data in a bidirectional communication system operating in full duplex mode. For a multi-transmitter system, timing circuitry staggers the time base of each transmitter to reduce the aggregate EMI emissions of the multi-transmitter system.08-28-2008
20090310688SYNCHRONIZATION POINT DETECTION METHOD AND POWER LINE COMMUNICATION APPARATUS - A method for detecting a synchronization point of an alternating power in comparing the alternating waveform with a threshold voltage is provided. The method includes the steps of detecting a rising point at which the voltage of the alternating waveform changes from a level lower than the threshold voltage to a level equal to or higher than the threshold voltage; detecting a falling point at which the voltage of the alternating waveform changes from a level equal to or higher than the threshold voltage to a level lower than the threshold voltage; measuring a first interval from the rising point to the falling point subsequent to the rising point; measuring a second interval from the falling point to the rising point subsequent to the falling point; and determining the synchronization point based on a difference between the length of the first interval and the length of the second interval.12-17-2009
20090220013Low-cost connector apparatus and methods for use in high-speed data applications - Low-cost connector apparatus for passing electrical signals from one device over another via a cable. In one embodiment, the connector apparatus comprises a coaxial type connector that mates with a host device, such as via the motherboard thereof. In one variant, the connector further comprises a plurality of electrical components including an integrated circuit adapted to condition (e.g., equalize) the signals being transmitted over the cable. The connector (and hence internal electrical components) is shielded so as to mitigate the effects of EMI or RFI on the host device circuitry itself. In another variant, the signals comprise IEEE-Std. 1394 “FireWire” high speed data signals, and the use of the shielded connector in the signal pathway allows the use of lower cost cabling than would otherwise be required with a non-shielded (non-integrated) connector.09-03-2009
20090116564LOW VOLTAGE DIFFERENTIAL SIGNALING TRANSMITTER AND TRANSMITTING METHOD - A low voltage differential signaling (LVDS) transmitter receives a data signal, a data invert signal and a plurality of logic signals. The LVDS transmitter includes a first-stage differential signaling transmitting circuit and a second-stage differential signaling transmitting circuit. The first-stage differential signaling transmitting circuit receives the data signal and the data invert signal and has a first output terminal and a second output terminal. The second-stage differential signaling transmitting circuit is controlled by the logic signals, and has a third output terminal and a fourth output terminal respectively connected to the first output terminal and the second output terminal, so as to generate a needed pre-emphasis signal. When no pre-emphasis signal needs to be generated, the second-stage differential signaling transmitting circuit is controlled to be in disabled state.05-07-2009
20120099662Communication Protocol Method And Apparatus For A Single Wire Device - The present invention is a noise tolerant communication protocol device and method where a clock signal input, triggers an internal delay clock in an integrated circuit. Data is presented to an input pin and sampled prior to the next external clock pulse based on the internal delay clock. A data pulse value is distinguished by input signal voltage level and not by pulse length. Sampling of data bits is deferred until a signal level is most likely stable, thereby avoiding sampling during periods around edges of changing data values. Therefore, error detection and correction circuitry is not required. A time reference pulse, produced by a bus master, is measured by the protocol device, in determine a data transmission rate by the master. The timing of sampling of input signaling from the master is determined by the protocol, device from measurement of the time reference pulse magnitude.04-26-2012
20120063518DEVICES, METHODS, AND SYSTEMS FOR BUILDING MONITORING - Devices, methods, and systems for building monitoring are described herein. One or more embodiments include a first transceiver coupled to a first phase of a power system of a building and configured to receive and send data over the first phase of the power system, a second transceiver coupled to a second phase of the power system and configured to receive and send data over the second phase of the power system, and a switch coupled to the first and second transceivers of the power system and configured to route data between the first and second transceivers of the power system.03-15-2012
20120002732Single-Wire Asynchronous Serial Interface - The present invention discloses a single-wire asynchronous serial interface, and a method for transmitting commands and data through one transmission wire, wherein the transmission wire is capable of transmitting signals of three level states. The disclosed interface comprises a signal level extraction circuit receiving signals transmitted through the wire and outputting logic or functional bits according to the received signals; a clock extraction circuit generating clock signals according to the functional bits, and a memory circuit controlled by the clock signals and storing the logic bits. The disclosed method comprises: using two of the level states to represent logic 0 and logic 1, and the third of the states as a functional bit; and determining whether a group of signals is a command or data by the existence of a functional bit within the group.01-05-2012
20120014460Compensation for Transmission Line Length Variation in a Serdes System - Described embodiments provide a method and system for signal compensation in a SERDES communication system that includes monitoring the quality of a data signal after passing through a transmission channel. The quality of the data signal is monitored with at least one of a BER calculation algorithm and a received eye quality monitoring algorithm. Variations in channel length of the transmission channel are compensated for by i) adjusting a length of transmission line delay of the data signal from the transmission channel, ii) comparing the data signal quality with a threshold for the adjusted data signal; and iii) repeating i) and ii) until the data signal quality meets the threshold.01-19-2012
20120014459Power Line Communication Networks and Methods employing Multiple Widebands - Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.01-19-2012
20120170670OFDM SYMBOL STRUCTURE FOR POWER LINE COMMUNICATION - A method for packing data over a power line communication channel is disclosed herein. The method comprises packing data into symbol body, adding a first pad in front of the symbol body to form a full symbol and determining the time instance in which the peak absolute voltage point of the AC electric power occurs. And subsequently it is to send the full symbol through the power line in a manner synchronized with the time instance aforesaid. Based on the interference condition detection, the invention allows receiver side adaptation.07-05-2012
20120300860TRANSMISSION DEVICE, RECEPTION DEVICE, AND COMMUNICATION SYSTEM - Provided is a transmission device including a terminal connected electrically to a terminal of another device, and a transmission unit configured to transmit information through the terminal by performing load modulation according to contact between the terminal and the terminal of the other device.11-29-2012
20120300859Precision Timing in a Data Over Cable Service Interface Specification (DOCSIS) System - An accurate non-Data Over Cable Service Interface Specification (non-DOCSIS) clock signal is generated at the downstream output of a DOCSIS network. In one example method, a downstream DOCSIS Timing Protocol (DTP) client in the DOCSIS network is frequency synchronized to an upstream DTP server in the DOCSIS network. DOCSIS timing information, along with one or more timing correction factors received at the DTP client, is used to time synchronize the DTP client to the DTP server. Based on the time and frequency synchronization between the DTP server and the DTP client, the clock signal is generated at the output of the DTP client in accordance with the non-DOCSIS timing protocol.11-29-2012
20120155557SYSTEM AND METHOD FOR POWER GRID COMMUNICATION - A system and method of data communication for a power grid determines available wired and wireless modes of data transmission and the available routes in the available wired and wireless modes. A weight is allocated to each of the available route and a final route for communication is determined based on an objective function.06-21-2012
20120155558INTEGRATING DEVICE OF WIRELESS CHARGING AND WIRELESS NETWORK FUNCTION - An integrating device of wireless charging and wireless network function includes a power transforming module, a wireless power transmitting module and a wireless network communication module therein. The power transforming module is electrically connected to an external power source to receive and transform AC power into DC power, whereby the power transforming module supplies the DC power to the wireless power transmitting module and the wireless network communication module as working power simultaneously. The wireless power transmitting module receives the DC power to convert and generate a power signal, and the generated power signal is wirelessly transmitted to an outer electric device.06-21-2012
20120155559DATA TRANSMITTING CIRCUIT AND DATA COMMUNICATION APPARATUS - Disclosed herein are a data transmission circuit and a data communication device that transmit data using an Alternating Current (AC)-coupled transmission line. The data transmission circuit includes a data transmission unit for transmitting data via a transmission line having a single AC-coupled line or a plurality of AC-coupled lines. When transmitting data, the data transmission unit transmits the data via the transmission line by sequentially setting a first electric potential corresponding to the data and a second electric potential different from the first electric potential. When transitioning from data transmission mode to an idle state, the data transmission unit sets an intermediate electric potential between the first electric potential and the second electric potential.06-21-2012
20100290541INTERFACE CIRCUIT - A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.11-18-2010
20120314783SYSTEM AND METHOD FOR POWER LINE COMMUNICATION - A communication system for a power line is described. A transmission system of the communication system divides the time axis into a number of time slots synchronized such that one time slot can start about a zero crossing of the power line signal. These time slots are referred to as channels and are numbered from 1 to n. A modulation method is described to is narrow band continuous phase FSK, where a number m of modulating frequencies are used, arranged such that an integral number of full cycles fit into each channel time slot for all m frequencies. The system transmits during only a subset of the available time slots (channels) concentrated near the zero crossing of the power line waveform where the noise is typically minimal.12-13-2012
20120314782Powerline Control Interface in CENELEC (EU) A-D Bands Frequency and Amplitude Modulation Transmitter - An apparatus is disclosed where a Powerline interface is used to transmit data into the powerline grid network, where the powerline interface is pulling the required transmit energy from the power grid network, where the powerline interface is transmitting data using standard narrow band modulation such as ASK, FSK, S-FSK, where the transmitted data are passed on to the powerline interface by the use of an “Input signal” adapation stage, where an error calculation and a comparisson to a “Triangle” signal is performed to create a command signal used to enable the transmission of data by providing enough voltage to polarize the Transistor (i.e: MOS FET) used in the powerline path.12-13-2012
20100246694Integrated reception system - An integrated reception system includes an integrated antenna device and an integrated-signal processing device. The integrated antenna device fed with power from the integrated-signal processing device converts a high frequency signal received by an antenna for receiving a plurality of signals of different signal systems into a digital signal, demodulates the converted digital signal, multiplexes digital demodulated signals which are demodulated, modulates the high frequency signal based on the multiplexed demodulated signal, attenuates the modulated high frequency signal by a predetermined amount of attenuation, and outputs the attenuated signal. The integrated-signal processing device demodulates the high frequency signal, separates the demodulated signal into demodulated signals each digitized for each of the signal systems, and outputs the separated demodulated signal.09-30-2010
20100246693TRANSMISSION APPARATUS - A differential amplifier stage under a band design whereby a data signal at a maximum transfer rate among received waveforms is subjected to attenuation upon passing through a transmission line is not amplified, and a signal at a transfer rate half the maximum transfer rate is amplified. If it is determined that a signal whose amplitude is larger in value than a high reference voltage, the signal is determined as a signal “09-30-2010
20120128080APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING TIME BROADCASTING INFORMATION USING POWER LINE - In the present invention, time information is sent through a common power line in executing home automation devices or using various industrial equipments. In the power line broadcasting, a small amount of data, such as time information, is transmitted unidirectionally, and long-distance power line broadcasting can be possible using carriers of a low frequency band. time setting for various instruments is automatically performed in response to a power signal after a breakdown of electric current, making unnecessary a user's action to perform the time setting, and the existing power line can be used without change.05-24-2012
20120128079Dynamic Transmit Power Control Method and Power Line Communication System - The present discloses a dynamic transmit power control method for a power line communication (PLC) system. The dynamic transmit power control method includes steps of collecting a data; and adjusting a compliant transmit power spectrum density (PSD) mask according to a non-flat transmit PSD mask and the data; wherein the compliant transmit PSD mask complies with the non-flat transmit PSD mask, which comprises a plurality of reference PSDs corresponding to a plurality of frequency bands.05-24-2012
20120128078Power Quality Device Having Communication Interface - Systems and methods provide power quality devices that include a communication interface to establish communications with the computer.05-24-2012
20120128081POWER LINE COMMUNICATION DEVICE, POWER SUPPLY CIRCUIT WITH COMMUNICATION FUNCTION, ELECTRICAL APPLIANCE, AND CONTROL AND MONITORING SYSTEM - To realize a transmission function of power line communication by a further simplified and cost-effective circuit configuration, in a PLC modem installed in an electric appliance such as a household electrical appliance.05-24-2012
20110182369INPUT/OUTPUT SIGNAL CONTROLLER AND INPUT/OUTPUT SIGNAL CONTROL SYSTEM EMPLOYING THE INPUT/OUTPUT CONTROLLER - A transmitting section 07-28-2011
20120314781Powerline Control Interface for Frequency and Amplitude Modulation Transmitter - An apparatus is disclosed where a Powerline interface is used to transmitting data into the powerline grid network, where the powerline interface is pulling the required transmit energy from the power grid network, where the powerline interface is transmitting data using standard modulation such as ASK, FSK, S-FSK, QPSK, OFDM, etc. . . where the transmit data are passed on to the powerline interface by the use of an adapation stage, where a “control signal” is used to enable the transmitting of data by providing enough voltage to polarize the FET used in the control path.12-13-2012
20090060061COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT - A communication apparatus is connected to a transmission channel for transmitting data to another communication apparatus. The communication apparatus includes: a communication frame generator which generates a communication frame for storing the data; and a controller which controls to insert a pilot symbol into the communication frame based on a state of the transmission channel.03-05-2009
20090060060METHOD FOR TRANSMITTING A SIGNAL FROM A TRANSMITTER TO A RECEIVER IN A POWER LINE COMMUNICATION NETWORK, TRANSMITTER, RECEIVER, POWER LINE COMMUNICATION MODEM AND POWER LINE COMMUNICATION SYSTEM - A method for transmitting a signal from a transmitter over a channel to a receiver on a Power Line Network, wherein said signal is OFDM-modulated on a set of sub-carriers, is proposed, wherein an OFDM tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said OFDM tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well.03-05-2009
20110188584DIGITAL LOAD-SHARING TO ENHANCE THE REDUNDANCY AND FLEXIBILITY OF CHANNEL DISTRIBUTION IN A MULTIPLE-CHANNEL MULTIPLE-PORT CATV UPCONVERTER/MODULATOR - A method of channel-to-port assignment is described where the distribution of channels is performed in the digital domain of the CATV/QAM upconverter/modulator. This channel distribution allows for the possibility of simple failover, power combining of multiple outputs, and a fine granularity of channel to port mapping, QAM or analog channel, in a multi-port device.08-04-2011
20120076211Systems and Methods for Facilitating Power Line Communications - Systems and methods for facilitating power line communications are described. In some embodiments, a PLC device may detect the availability of a first frequency band as well the availability of a combination of a second frequency band with a third frequency band. The PLC device may then communicate with another PLC device using a frequency band selected as (a) at least a portion of a combination of the first, second, and third frequency bands, (b) at least a portion of the first frequency band, or (c) at least a portion of the combination of the second with third frequency bands. The PLC device may further transmit a message to a higher-level PLC apparatus (e.g., a domain master) over the power line using a device-based access mode, receive an instruction to switch to a domain-based access mode, and thereafter communicate with another PLC device using the domain-based access mode.03-29-2012
20120314780System and Method for Transmit Signal Pulse Shaping in Automotive Applications - A system and method for transmit signal pulse shaping in automotive applications. Automotive vehicle manufacturers that incorporate electronic components into an automotive vehicle must consider emission requirements masks that can be dependent on particular geographic markets as well as the other electronic components contained within a particular automotive vehicle design. A physical layer device is provided that can be configured to operate in multiple emissions configurations using configurable parameters specified for the modulation and wave shaping modules.12-13-2012
20120257683COMMUNICATIONS SYSTEM USING BEAMFORMING - In a MIMO communications system a first communications device applies beamforming to a complete transmission packet including both synchronization data and either payload data or training symbols. A second communications device evaluates the beamformed synchronization data and determines and transmits a feedback information indicating minimum required synchronization data and/or a minimum number of training symbols. The first communications device tailors the synchronization data and/or number of training symbols on the basis of the feedback information. Beamforming the complete transmission packet facilitates signal suppression at defined locations. When the channel properties change, the second communications device may provide further channel state information to adapt beamforming in the first communications device without transmission of not beamformed training symbols. The communications system may be a powerline telecommunications system.10-11-2012
20100272192OFDM-Lite Architecture for HomePlug - A device for communicating digital data over power lines includes a power line interface for transmitting data over at least one band of frequencies. An orthogonal frequency division multiplexing (OFDM) modulation unit generates OFDM symbols using a set of tones for the frequency band. A preamble generation unit generates preamble sequences for the frequency band by using the set of tones used by the OFDM modulation unit. The tones used by the preamble generation unit have a constant magnitude, and a set of phases obtained by quantizing to a small alphabet the phase of a set of tones obtained by taking an IFFT of a portion of a preamble used by a non-interoperable powerline access device. The device may transmit on two or more bands using a sampling frequency clock, wherein a lower band clock frequency is equal to or an integer divisor of a higher band clock frequency.10-28-2010
20120177133CLOSED-CIRCUIT POWER LINE COMMUNICATION - A system for closed-circuit power line communication includes at least a first and second power line connected to at least one electrical device configured to receive a data signal. An auxiliary line is connected to the electrical devices to provide a ground connection, and at least one transmitter generates a first data signal for transmission over the first and second power lines, respectively, to the electrical device. A low-pass common-mode filter is connected to the first and second power lines to provide closed-circuit data communication between the transmitter and the electrical device, the filter comprising at least one coupling capacitor between said first and second power lines such that at least the polarities with respect to ground of said first data signals transmitted over the first and second power lines, respectively, are substantially similar.07-12-2012
20120263242METHOD AND DEVICES FOR ESTABLISHING COMMUNICATION BETWEEN A FIRST STATION AND A SECOND STATION - Methods and devices that establish communication between a first station and a second station are provided. To this end, an identifier, which identifies the first station and the second station as communication partners for communication, is transmitted between the first and second stations on a first partial connection. After receiving said identifier, communication is started between the first and second stations via a communication connection, wherein the transmission of the identifier via the first partial connection and the communication connection are based on different physical connections. The methods and systems can be used for loading or unloading processes of electrical vehicles, such as autonomous systems in the hospital field, or for vehicles for personal transportation. The methods and systems may provide reliable and cost-effective communication between the first and second stations.10-18-2012
20120082245NETWORK BASEBAND SIGNAL TRANSMISSION APPARATUS USING AT LEAST TWO COAXIAL CABLES - An apparatus uses at least two coaxial cables to transmit network baseband signals, particularly Ethernet baseband signals. The apparatus includes a first transmission device and a second transmission device. The first transmission device includes a first conversion module that is capable of transmitting and receiving Ethernet baseband signals. The second transmission device includes a second conversion module that is capable of transmitting Ethernet baseband signals to the first conversion module and receiving Ethernet baseband signals from the first conversion module. The first and second conversion modules are connected through at least two coaxial cables for transmission of Ethernet baseband signals. Through transmission of network baseband signals through coaxial cables, the advantages of reducing costs and maintaining high efficiency of transmission can be realized.04-05-2012
20120257682POWER LINE COMMUNICATIONS DURING SELECTED TIME INTERVALS - A method of power line communications includes obtaining timing information for an AC mains signal transmitted on a power line in a power line communication (PLC) system that includes at least one receiver and at least one other device connected on the power line which provides variable loading during cycles of the AC mains signal. A first loading interval within at least a first cycle of the cycles having lower loading and at least a second loading interval within said first cycle having higher loading are identified using the timing information. At least one data packet is transmitted only during the first loading interval over the power line to the receiver.10-11-2012
20080298476APPARATUS FOR ALL-DIGITAL SERIALIZER-DE-SERIALIZER AND ASSOCIATED METHODS - An all-digital serializer-de-serializer includes an all-digital clock multiplier unit (CMU) circuit, an all-digital clock and data recovery (CDR) circuit, a multiplexer (MUX), and a demultiplexer (DeMUX). The all-digital clock and data recovery (CDR) circuit couples to the all-digital clock multiplier unit (CMU) circuit. The multiplexer (MUX), couples to all-digital clock multiplier unit (CMU) circuit, and serializes data. The demultiplexer (DeMUX), couples to the all-digital clock and data recovery (CDR) circuit, and de-serializes data.12-04-2008
20110002400METHOD OF TRANSMITTING A PACKET OF DIGITAL DATA OVER A POLY-PHASE POWER LINE AFFECTED BY IMPULSIVE NOISE - The method transmits a long packet of digital data over a poly-phase power line affected by impulsive noise synchronous with phase voltages. Instead of using very complicated coding schemes, starting from the knowledge of the typical power line scenario, useful information is transmitted where noise synchronous with the main signal is absent. Time-intervals of a known or estimated duration during which the poly-phase power line is affected by impulsive noise are determined, and dummy data during the time-intervals, and useful data during other time-intervals free from impulsive noise, are transmitted.01-06-2011
20120320998USE OF POWERLINES FOR TRANSMISSION OF HIGH FREQUENCY SIGNALS - Communication is provided which includes receiving a transmitted radio signal at a powerline wherein the powerline functions as a receiving antenna for the wirelessly transmitted radio signal. The powerline is coupled to an input of a radio receiver using a coupler to communicate the radio signal to the radio receiver. For calibration purposes a second antenna not coupled to powerline may be used. A method for powerline communication across transformers, open circuit breakers, and other devices is also provided. In addition, a method of monitoring a device connected to a powerline is provided.12-20-2012
20120320995CO-EXISTENCE OF MULTI-CARRIER AND SINGLE CARRIER COMMUNICATION STANDARDS ON SHARED PLC CHANNEL - A method for reducing interference on a shared powerline communications (PLC) channel in a PLC network including a first node using a multi-carrier modulation communication standard operating at a first and second carrier frequency and a second node using a single-carrier modulation communication standard operating based on a single-carrier frequency. (i) Non-overlapping transmission times are determined for transmissions by the first node relative to second node transmission times for transmissions from the second node or (ii) non-overlapping frequencies are selected for the first carrier frequency and second carrier frequency which do not overlap with the single-carrier frequency or frequencies based on the single-carrier frequency. The second node transmits using the single-carrier modulation communication standard at the second node transmission times. The first node transmits using the multi-carrier modulation communication standard at the non-overlapping transmission times or non-overlapping frequencies.12-20-2012
20100232522INTERFACE CIRCUIT - A video signal and an audio signal are TMDS transmitted from a source device to a sink device. Through a reserved line and a HPD line provided separately from a TMDS transmission line, an Ethernet™ signal is bidirectionally transmitted, and also, a SPDIF signal is transmitted from the sink device to the source device. The Ethernet™ signal bidirectionally transmitted between Ethernet™ transmitter/receiver circuits is differentially transmitted by an amplifier and is received by the amplifier. The SPDIF signal from a SPDIF transmitter circuit is common-mode transmitted from an adder and is received by the adder to be supplied to the SPDIF receiver circuit.09-16-2010
20120321000METHOD FOR TRANSMITTING A SIGNAL FROM A TRANSMITTER TO A RECEIVER IN A POWER LINE COMMUNICATION NETWORK, TRANSMITTER, RECEIVER, POWER LINE COMMUNICATION MODEM AND POWER LINE COMMUNICATION SYSTEM - A method for transmitting a signal from a transmitter over a channel to a receiver on a Power Line Network, wherein said signal is OFDM-modulated on a set of sub-carriers, is proposed, wherein an OFDM tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said OFDM tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well.12-20-2012
20120320997NETWORK INFRASTRUCTURE FOR MOBILE MACHINES WHICH CAN BE USED IN AREAS AT RISK OF EXPLOSION - A network infrastructure for mobile machines which are usable in explosive areas, having inherently safe participants and not inherently safe network participants the latter being arranged in pressure-resistant housings. The machine has at least one controller for actuating at least one not inherently safe participant. In order to provide a network infrastructure which avoids the drawbacks of the prior art, the machine has, outside the pressure-resistant housing for the first controller, at least one second, inherently safe controller for actuating at least one inherently safe participant, wherein the first controller forms a data distributor for a plurality of not inherently safe participants and the second controller forms a data distributor for a plurality of inherently safe participants, and wherein the first data distributor and the second data distributor are linked via an electrically decoupled data communication link.12-20-2012
20120320996PREAMBLE SEQUENCE EXTENSION - A method of powerline communications between a plurality of nodes on a powerline communications (PLC) channel including a first node and a second node. At least one communication quality measure is determined for the PLC channel. Based on the communication quality measure, a preamble of a data frame is dynamically switched between a reference preamble having a reference symbol length including a reference number of syncP symbols and a reference number of syncM symbols and at least a first extended preamble having an extended symbol length that is greater than (>) the reference symbol length. The data frame is then transmitted on the PLC channel.12-20-2012
20120320999METHOD FOR TRANSMITTING A SIGNAL FROM A TRANSMITTER TO A RECEIVER IN A POWER LINE COMMUNICATION NETWORK, TRANSMITTER, RECEIVER, POWER LINE COMMUNICATION MODEM AND POWER LINE COMMUNICATION SYSTEM - A method for transmitting a signal from a transmitter over a channel to a receiver on a Power Line Network, wherein said signal is OFDM-modulated on a set of sub-carriers, is proposed, wherein an OFDM tonemap and an eigenbeamforming encoding matrix are determined based on a channel estimation for each sub-carrier, a tonemap feedback signal and an eigenbeamforming feedback signal are generated, which are descriptive of said OFDM tonemap and said eigenbeamforming encoding matrix, respectively, and transmitted to the transmitter. A corresponding receiver, a transmitter, a power line communication and a power line communication system are described as well.12-20-2012
20120328030Method For Transmitting A Signal Via A Power Line Network, Transmitter, Receiver, Power Line Communication Modem And Power Line Communication System - A method for receiving signals over a power line network, within the power line network at least one transmitter and at least one receiver communicate via at least two channels, each of the channels having a respective feeding port of the at least one transmitter and a respective receiving port of the at least one receiver, and the receiver having at least two receiving ports. The method determines a channel characteristic of each of the channels, applies a receiving port selection criterion based on the channel characteristic, and selects an excluded receiving port among the at least two receiving ports based on the receiving port selection criterion, the excluded receiving port is not used during further communication.12-27-2012
20100202541SIGNAL ENCODING FOR FREQUENCY DIVISION MULTIPLEXING ON TRANSMISSION LINES - A method of transmitting on a transmission line a set of carrier signals of which at least one component represents a respective data value and the carrier signals are of different frequencies ranging from a lowest frequency to a highest frequency, in which the respective component of each carrier above the lowest frequency is adjusted on transmission in accordance with a selected relationship between that respective component and the corresponding component of the next lower frequency so as to compensate for the frequency-dependent effect of the transmission line on those components. The components may be amplitudes. The relationship may be a ratio of the respective and corresponding components. Alternatively each respective component may be adjusted in accordance with a scaling factor dependent on the previous data value presented by the corresponding component of next lower carrier frequency, the scaling factor being a ratio between a predetermined value and the said corresponding component, the predetermined value depending on the said previous data value. The components may be phases and the phase of each carrier after the first may be set from the phase of the previous lower frequency carrier augmented by the ratio of the data value in bits and the number of bits that can be carried by the respective component.08-12-2010
20100142627COMMUNICATION APPARATUS - In a single-wire data communication characterized in that a data communication unit time is different in accordance with the polarity of a signal, a communication control time is dependent on a communication data pattern, and hence, the control of the whole system is difficult. A counter for counting a clock continues the counting until a count value thereby obtained reaches a predetermined upper limit value, retains the predetermined upper limit value as the count value until a next pulse is detected in a reception signal after the count value reaches the predetermined upper limit value, and initializes the count value when the next pulse is detected. A data value judger judges a data value depending on whether or not the pulse is detected during a period before the time when the count value reaches the predetermined upper limit value.06-10-2010
20130016792MANAGING COEXISTENCE AMONG SIGNALING PROTOCOLS ON A SHARED MEDIUM - Within a domain of a master device, devices that share a power line as a communications medium monitor signal detection windows to sense network status. The devices transmit sensed network status to the master device. The master device allocates channel resources based on the network statuses communicated by the devices within the domain.01-17-2013
20130022133Wideband Balun Structure - A balun structure is disclosed having positive and negative going signal paths coupled to a ninety degree hybrid. The positive signal path has a circuit trace and a phase shaper structure that provides three hundred and sixty degrees of phase shift at Port 1 of the hybrid. The negative going signal path has a circuit trace and a second order phase shaper that provides four hundred and fifty degrees of phase shift at Port 2 of the hybrid. Port 1 is coupled to Port 3 of the hybrid and functions as an output port. The first order phase shaper and the second order phase shaper compensate for the signal loss caused by a signal cable coupled to the output port and provide a frequency band from DC to at least 15 GHz and a transient response having less than ten percent pre-shoot.01-24-2013
20120243621Multi-Wideband Communications over Multiple Mediums within a Network - A multi-network interface device comprises a powerline communications interface and at least one other non-power line communications interface configured to communicate over a network. The network may comprise mediums including powerlines, telephone lines, and/or coaxial cables. The multi-network interface device may receive a communications signal via a first medium and transmit the message via a second medium based on a quality of service (QoS) metric.09-27-2012
20090147864HDMI communication over twisted pairs - A method of transmitting a data stream over a communication channel, the method comprising: providing symbol sets having different numbers of symbols; modulating data in the data stream that warrant different degrees of protection against noise onto symbols from symbol sets having different numbers of symbols, wherein which symbol set given data in the stream is modulated onto is independent of symbol sets onto which other data in the data stream is modulated onto; and transmitting the symbols.06-11-2009
20090290651TRANSMITTERS FOR LOOP-BACK ADAPTIVE PRE-EMPHASIS DATA TRANSMISSION - Transmitters for data communication can include a pattern generator configured to generate parallel data stream composed of k bits, k being a natural number greater than 2, a serializer configured to convert the parallel data stream into a serial data stream, a pre-emphasis circuit configured to pre-emphasize the serial data stream based on a pre-emphasis control value, to transmit the pre-emphasized serial data stream to a receiver via a first transmission line, and a pre-emphasis controller configured to receive measured values of transmission errors of the pre-emphasized serial data stream from the receiver via a second transmission line, and configured to set the pre-emphasis control value corresponding to a minimum measured value of the transmission errors, to an optimum pre-emphasis control value.11-26-2009
20080219358METHOD FOR COMMUNICATING DATA AND CLOCK SIGNALS AND CORRESPONDING SIGNAL, TRANSMITTER AND RECEIVER - A clock signal constituted by pulses with given frequency of repetition and a data signal is able to assume two logic levels are transmitted simultaneously on a two-wire line in the form of a bipolar differential pulse signal with frequency of repetition of the pulses equal to the frequency of repetition of the pulses of the clock signal and in which the sign of the pulses of the pulse signal applied to said two-wire line varies according to the logic level of the data signal.09-11-2008
20130177087AGILE SWITCHED-LOAD RESONATING TRANSMITTER FOR PASSBAND POWER LINE COMMUNICATION - An agile switched-load transmitter for a communications system for a power distribution network comprises a resonant transponder (T07-11-2013
20130094597Joining Process for G3 Networks - Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method performed by a PLC device, such as a PLC meter, may include identifying at least one bootstrapping agent and a personal area network (PAN) identifier for one or more networks that are operating within a personal operating space of the PLC device. The device selects a target bootstrapping agent to use for the join process with a target network. The target bootstrapping agent may be selected from a list of bootstrapping agents associated with the target PAN identifier. If the attempt to join the target network fails, then the device further determines if other bootstrapping agents are associated with the target PAN identifier. The device selects an alternate target bootstrapping agent from the other bootstrapping agents that are associated with the target PAN identifier and reattempts the join process.04-18-2013
20130114747METHODS AND APPARATUS FOR SIGNALING ON A DIFFERENTIAL LINK - Methods and apparatus are disclosed for transitioning a receiver from a first state to a second state using an in-band signal over a differential serial data link.05-09-2013
20130114746DATA TRANSMISSION SYSTEM, DATA TRANSMISSION METHOD, AND TRANSMISSION DEVICE - A data transmission system includes a plurality of signal lines, a signal line determination unit, and a data transmission unit. The plurality of signal lines transmit data transmitted from a transmission-side device to a reception-side device. The signal line determination unit determines which signal line among the signal lines is used to transmit reception adjustment data to the reception-side device. The data transmission unit uses the signal line determined by the signal line determination unit to transmit the reception adjustment data to the reception-side device and uses another signal line to transmit transmission data to the reception-side device.05-09-2013
20130101054POWER LINE COMMUNICATION METHOD AND ELECTRONIC SYSTEM AND ELECTRONIC DEVICE USING THE SAME - The present application discloses a power line communication method and an electronic system and an external device using the same. The external device using the power line communication method is electrically connected to an electronic device via a transmit line and comprises: a voltage detecting module configured to detect a voltage variance of a signal voltage supplied by the electronic device; a processing module retrieving a message according to the voltage variance and processing the message to generate a message to be transmitted; and a load modulation module having a load and modulating a load value of the load according to the message to be transmitted.04-25-2013
20130101055Sub-Band Power Scaling Reporting and Sub-Band Transmit Power Estimation - Systems and methods for routing protocols for power line communications (PLC) are described. In some embodiments, a method performed by a PLC device, such as a PLC meter, may include selecting one or more transmit sub-bands on which to transmit frames, where the transmit sub-bands comprise groups of six carrier frequencies. The PLC device then generates a frame comprising a tone map that indicates which transmit sub-bands are used to carry data for the frame. The tone map using two bits per transmit sub-band to indicate a status of each transmit sub-band. The PLC device then transmits the frame on the selected transmit sub-bands using OFDM. A resolution bit and a mode bit may be used to provide additional information about the transmit sub-bands, such as an amount of power adjustment that has been applied to carrier frequencies and whether dummy bits are transmitted on unused carrier frequencies.04-25-2013
20130101056RECEIVER CIRCUIT AND SYSTEM INCLUDING P-TYPE SENSE AMPLIFIER - A receiver circuit includes a first p-channel metal oxide semiconductor (PMOS) transistor, an input circuit, and an amplifier. The first PMOS transistor is configured to apply a power supply voltage to a power node in response to a clock signal. The input circuit is coupled to the power node, and configured to receive the power supply voltage, and the input circuit includes a plurality of PMOS transistors configured to generate a first sensing signal in response to an input signal and configured to generate a second sensing signal in response to at least one reference signal. The amplifier is configured to amplify the first sensing signal and the second sensing signal to generate a first output signal and a second output signal.04-25-2013
20130094596DUAL-CHANNEL RECEIVER FOR POWERLINE COMMUNICATIONS - The presently disclosed subject matter relates to powerline communications (PLC) in an advanced metering infrastructure (AMI) environment. A communications signal is applied to a power line by a PLC transmitting device. A receiver is provided that evaluates communications signals based on the power coupled to the power line by the transmitting device. In one present embodiment, PLC signal voltage and current levels are multiplied together to evaluate signal power to reproduce received PLC signals.04-18-2013
20090207922POWER LINE COMMUNICATION APPARATUS, POWER LINE COMMUNICATION SYSTEM, AND REGISTRATION PROCESSING METHOD - A power line communication apparatus controls a transmission using a plurality of parameters. The power line communication apparatus includes: a registration processor which performs a registration process for achieving a state to be communicable with another power line communication apparatus through a power line by use of transmission data based on a first parameter set at a first value and a second parameter set at a second value, a parameter controller which changes the first parameter to the third value to lengthen a communicable distance and the second parameter to the fourth value to shorten the communicable distance when the registration process has ended in failure. When the registration process has ended in failure, the registration processor retry the registration process by use of transmission data based on the first parameter set at a third value and the second parameter set at a fourth value.08-20-2009
20080198940SYSTEM AND METHOD FOR DATA TRANSMISSION BETWEEN A TRANSMITTER AND A RECEIVER ACROSS A TRANSMISSION LINE - A receiver transmits data to a driver over a differential pair line, during blanking periods, in a system employing low voltage differential signaling.08-21-2008
20080298475CIRCUIT AND METHOD FOR BASELINE WANDERING COMPENSATION - A circuit and a method for baseline wandering compensation for solving the problem of baseline wandering in receivers of a communication system are provided. Two paths of baseline wandering compensation are provided on the basis of a slicer error. One of the paths adjusts a direct current (DC) bias of an input signal, and the other path adjusts the determining levels of the slicer, and thus, the present invention avoids input saturation of an analog-to-digital converter, enhances the signal-to-noise ratio, and achieves a precise baseline wandering compensation.12-04-2008
20110228860Multi-Value Logic Signaling in Multi-Functional Circuits - Methods and circuits provide function-appropriate signaling to multi-functional circuits on a constrained set of communication lines. A first communication line receives digital signals. The second communication line is employed for digital signaling related to a first function. In further steps, the method comprises initiating, based on a multi-value logic digital signal on the first communication line, an activation process that generates a second-function activation signal. Upon receipt of the second-function activation signal, the second communication line is employed for digital signaling related to a second function. Preferred activation processes involve monitoring the second communication line for a digital signature and sending the activation signal upon detection of an appropriate signature.09-22-2011
20110243255Low-Noise Cable - Methods and apparatus for reducing the electromagnetic interference (EMI). The present invention is aimed at the reduction of the electric current flowing on the external surface of shields of cables made by a combination of shielded cables. In one embodiment the cable shields are electrically connected with each other in one or a plurality of positions along the cable, in order to reduce the current flowing on the cable shields, and a conducting connection externally to the jacket is provided, in order to connect an EMI filter. In a different embodiment the cable jacket is partially removed, in order to provide an electrical connection between all the shields and an external EMI filter. In a different embodiment the cable comprises quarter-wavelength sleeve chokes in order to reduce the shield common mode current at some particular frequencies.10-06-2011
20110243254Communications interface to differential-pair cabling - Disclosed is a communications interface to connect to a first device and to establish a communication between the first device and a second device over a medium. The communications interface comprises at least one common mode choke having a first end configured to connect to an Ethernet transceiver of the first device. The communications interface further comprises an optional capacitor having a first end coupled to a second end of the at least one common mode choke and having a second end configured to connect to the medium. The communications interface does not include any transformers connected to the second end of the at least one common mode choke. The Ethernet communications is readily adaptable to differential-pair cabling and applications in harsh electromagnetic interference environments, such as automotive, aero-space, air crafts, water crafts, trains, railroad and marine applications, where high rejection of EMI is required.10-06-2011
20090122880FILTER FOR BPL SIGNAL - A filter system for a broadband over power line system comprises a power line and a first line node and second line node of the broadband over power line system using the power line. The filter system also comprises a filter on the power line placed between the first and second line node, to attenuate a range of frequencies. Wherein the range of frequencies can be the entire range of mode frequencies used in the broadband over power lines system.05-14-2009
20130148747TRANSMITTING ELECTRICAL POWER AND COMMUNICATION SIGNALS - A system for transmitting electrical power and communication signals is provided. The system comprises a transmission line, a source of electrical power for supplying electrical power to the transmission line, a first communication unit configured to supply communication signals to the transmission line, a power extraction unit configured to extract and use electrical power from the transmission line, a second communication unit configured to receive communication signals from the transmission line; and a control unit configured to control operation of the system. The source supplies electrical power to the transmission line for respective periods of time which are different from respective periods of time in which the first communication unit supplies communication signals to the transmission line.06-13-2013
20130148748METHOD TO IDENTIFY TRACTOR AND TRAILERS AND THE ORDER OF HOOK UP - Methods for connected tractor and trailer identifications and the order of hook-up of multiple trailers to a tractor enable the tractor and trailer identification and the order of trailer hook-up to be remotely broadcast from the tractor or trailers. In one aspect, the detection of vehicle identification and the order of trailer hook-up are determined by PLC tags mounted in the trailers or by a PLC Gateway mounted in the tractor or one of the trailers utilizing the PLC system on the tractor/trailers. In another aspect, the vehicle identifications are extracted from electronic modules existing on the tractor and trailers and sent to the PLC Gateway for broadcast from tractor/trailer.op06-13-2013
20130148746Scheduling for Charger and Electric Vehicle Communication in Power Line Communication System - Systems and methods for establishing scheduling for charger and electric vehicle communication in a PLC system are described. In an illustrative embodiment, a method performed by a PLC device. In a further embodiment, the PLC device may be configured to operate according to a narrow-band PLC communication protocol. In a further embodiment, the narrow-band PLC communications between PLC devices in the charger and the electric vehicle are conducted over a pilot wire coupling the charger to the electric vehicle. In still a further embodiment, the pilot wire may be one of a standard set of existing wires in a standard cable used for connecting the charger to the electric vehicle.06-13-2013
20100284474TRANSMITTER CHANNEL THROUGHPUT IN AN INFORMATION NETWORK - Apparatus and methods for transmitting information over a home coax network. The apparatus and methods may involve a physical layer frequency domain signal preprocessor and a physical layer time domain signal transmitter. The transmitter may be configured to receive the signal from the preprocessor and transmit the signal over coax that is in radiofrequency communication with a plurality of network nodes, the transmitter having a first transmission channel and a second transmission channel. The signal may be received by a receiver on the network. The receiver may have a MAC-to-PHY interface that is configured to receive signals from single-transmission-channel transmitters.11-11-2010
20120275527ISOLATED COMMUNICATIONS INTERFACE - A method and interface for serial communication is provided. The interface includes a differential input/output having a first node and a second node. There are several input/output nodes arranged to receive serial interface signals. The interface includes a transmitter configured to drive a twisted pair cable at the differential input/output. There is a receiver coupled to the differential input/output that includes a window comparator. A serial port control unit provides serial data to the transmitter and receives serial data from the receiver. The serial communications interface transmits serial data to and receives serial data from a second serial communications interface independent of a reference clock and is galvanically isolated from the second serial communications interface.11-01-2012
20120275526ETHERNET OVER POWER - The present disclosure relates to Ethernet-over-Power and provides communication to and from the powerline hardware, e.g. power sockets or light fittings, and through the powerline itself. In one aspect a Power and Data transmission terminal that is a MAC addressable power outlet, switch or transition point is provided, the Power and Data transmission terminal having a PLC Transceiver, a microcontroller, a power consumption meter and a transmission router between the microcontroller and the PLC Transceiver, the system thereby being able to both monitor energy usage and allow data communication over the powerline with a single microcontroller at the or each Power and Data transmission terminal. The system provides I. P addresses to the electrical outlets from which a wide range of devices run and in so doing it can communicate with the electrical outlets themselves.11-01-2012
20100316141Method and Apparatus for Extending Receiver-Biased Digital Links - A new design is shown for a digital link that does not require additional power for transmitter biasing when copper media a in receiver-biased digital link is replaced with an alternative link medium. This power savings can be crucial is certain applications, such as HDMI or DVI bus extension where the available power resources are highly constrained.12-16-2010
20100316140TRANSMITTER AND METHOD FOR APPLYING MULTI-TONE OFDM BASED COMMUNICATIONS WITHIN A LOWER FREQUENCY RANGE - According to one embodiment of the invention, an integrated circuit comprises an encoding module, a modulation module and a spectral shaped module. The encoding module includes an interleaver that adapted to operate in a plurality of modes including a first mode, a second mod and a third mode. The interleaver performs repetitive encoding when placed in the second mode and even greater repetitive encoding when placed in the third mode.12-16-2010
20130156116BLOCK FILTER FOR POWER LINE COMMUNICATION - Provided is a blocking filter for PLC, the blocking filter including a low pass filter unit including a capacitor and a plurality of inductors, a plurality of magnetic saturation prevention circuits each connected to the inductor in parallel to prevent magnetic saturation of the inductor, and operating in response to an interruption control signal inputted from outside, and a first switch connected or opened in response to the interruption control signal and interconnected between the low pass filter unit and a neutral line.06-20-2013
20130182781PLC/POWER-SUPPLY HYBRID DEVICE AND DEVICE WITH COMMUNICATION FUNCTION - A PLC/power-supply hybrid device includes a power supply circuit. The power supply circuit includes a switching part for chopping a voltage of a voltage input terminal side, and a control circuit that controls the chopping by controlling switching of the switching part. The control circuit is operated in a normal mode and a transmission mode. The normal mode is a mode in which voltage conversion is performed. The transmission mode is a mode in which data transmission is performed through PLC using a power line that leads to the voltage input terminal. In the transmission mode, the control circuit modulates the switching of the switching part in accordance with transmission data.07-18-2013
20120020416FLEXIBLE CABLE AND TRANSMISSION SYSTEM - A flexible cable is provided in which a transmission characteristic can be ensured in a high frequency band, and electromagnetic noises can be suppressed. A flexible cable 01-26-2012
20130195208POWER LINE COMMUNICATION SYSTEM - A power line communication system is provided in which the influence of the impulsive noise unexpectedly generated on a power line which is a communication medium can be reduced according to the characteristics of the impulsive noise by an existing method and power line communication can be realized without a hindrance. A transmitter is constituted by: a modulator for conveying a LIN data signal by a power line; a filter that allows a signal of a predetermined band to pass therethrough; and a sinusoidal wave outputter (sinusoidal wave in the figure). In contrast, the receiver is constituted by the sinusoidal wave outputter, the filter and a demodulator that performs demodulation. To the power line, a limiter that limits the amplitude of the propagating signal to a predetermined amplitude (reception signal amplitude) is connected.08-01-2013
20120033746CABLE SYSTEM WITH SELECTIVE DEVICE ACTIVATION FOR A VEHICLE - The present invention relates to a cable system (02-09-2012
20120039400DIGITAL TWO WAY AUTOMATIC COMMUNICATION SYSTEM (TWACS) OUTBOUND RECEIVER AND METHOD - A receiver and method for a transponder of a two-way automatic communications system (TWACS) used by an electrical utility in which analog outbound messages are sent from the utility to a consumer and inbound, reply messages are sent from the consumer to the utility. The receiver and method enable a transponder to detect the outbound messages and include A/D conversion and digital processing for demodulating a digitized signal and providing the outbound message.02-16-2012
20090003463OUTPUT BUFFER CIRCUIT, SIGNAL TRANSMISSION INTERFACE CIRCUIT AND APPARATUS - An output buffer circuit which transmits a logic signal to a transmission line includes a transmission pre-emphasis output circuit and a transmission pre-emphasis amount determination circuit. The transmission pre-emphasis output circuit controls a pre-emphasis amount according to an output signal from the transmission pre-emphasis amount determination circuit. The transmission pre-emphasis amount determination circuit adjusts a pre-emphasis amount and the number of pre-emphasis taps according to a pseudo loss control signal, controls a pre-emphasis amount of a transmission signal so that a signal amplitude is made smaller in a signal component with a high frequency than that of a signal component with a low frequency, and imparts signal degradation to a received waveform to realize transmission loss in a pseudo manner.01-01-2009
20120093241DSL ALIEN NOISE REDUCTION - Alien noise is removed from one or more receptor DSL lines after self-FEXT has been eliminated or reduced. Information about the alien noise in the form of slicer errors can be obtained from one or more donor DSL lines that may or may not be in the same domain (e.g., a vectored DSL system).04-19-2012
20120093240INTERFERENCE DETECTION IN A POWERLINE COMMUNICATION NETWORK - A powerline communication (PLC) network can be subject to noise/interference resulting in loss of throughput and data corruption for PLC devices connected to the PLC network. A powerline interference analyzer can be implemented in the PLC network for detecting sources of the noise. The powerline interference analyzer can determine powerline network noise characteristics that are representative of noise on the PLC network and can analyze the powerline network noise characteristics to determine one or more noise patterns. The noise patterns can be compared with a plurality of predefined noise signatures that are representative of corresponding each of a plurality of noise sources. Consequently, at least one noise source that is associated with the noise patterns can be identified from the plurality of the noise sources.04-19-2012
20130208816ADAPTIVE IMPULSE NOISE MITIGATION - A data transmission system and method is provided for the transmission data signal to one or receiving locations. A Multi Mode Compressive Sensing (MMCS) scheme is provided which adaptively changes the number of pilots used to reconstruct the Impulsive Noise (IN) depending on the IN's current severity so as to mitigate the same and stabilise the Bit Error Rate (BER) of the transmitted data signals and so improve the overall transmission system data throughput. The system can also allow for a variable IN mitigation range in order to allow the concurrent control of the BER and data throughput in the data transmission system.08-15-2013

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