Class / Patent application number | Description | Number of patent applications / Date published |
375258000 | Transformer coupling | 61 |
20080260050 | ON CHIP TRANSFORMER ISOLATOR - An integrated circuit having voltage isolation capabilities includes a first area of the integrated circuit containing functional circuitry that is located in the substrate of the integrated circuit. A second area of the integrated circuit contains an integrated RF isolation circuitry for voltage isolating the functional circuitry. The RF isolation circuitry is located in the metal layers of the integrated circuit. | 10-23-2008 |
20080267301 | BIDIRECTIONAL MULTIPLEXED RF ISOLATOR - An integrated circuit single chip isolator provides bidirectional data transfer for a plurality of communications channels. A first and second dies are located on a first and second sides of a voltage isolation barrier in the chip and have a first and second plurality of digital data input/output pins associated therewith. First circuitry located on the first die on a first side of the voltage isolation barrier and third circuitry located on the second die on a second side of the voltage isolation barrier serializes a plurality of parallel digital data inputs from the associated plurality of digital data input/output pins onto a one link across the voltage isolation barrier and transmits synchronization clock signals associated with the plurality of digital data inputs over a another link across the voltage isolation barrier. Second circuitry located on the second die on a second side of the voltage isolation barrier and fourth circuitry located on the first die on a first side of the voltage isolation barrier de-serializes the first plurality of digital data inputs from the first link onto the second plurality of digital data input/output pins and receives the first synchronization clock signal associated with the plurality of digital data inputs on the second link. Switches associated with each of the plurality of input/output pins between transmit and receive circuitry. | 10-30-2008 |
20080285662 | TRANSFORMER DATA COUPLER WITH HIGH COMMON MODE IMMUNITY - A data coupler includes a transformer having primary and secondary windings, a data transmitter coupled to the primary winding of the transformer, and a data receiver coupled to the secondary winding. The data transmitter includes a first driver and a second driver having outputs coupled to respective ends of the primary winding. The first driver is responsive to a data signal and the second driver is responsive to a delayed version of the data signal, such that the primary winding is supplied with pulses representing a difference between the data signal and the delayed version of the data signal. The data coupler also includes an ac (alternating current) path to ground from the secondary winding for conducting to ground common mode signals coupled to the secondary winding via an inter-winding capacitance of the transformer. | 11-20-2008 |
20090060062 | Induction Neutralizing Transformer - An induction neutralizing transformer is provided. The induction neutralizing transformer includes a core and a coil wrapped around the core. The coil has a length between approximately 100 feet and approximately 200 feet and includes a plurality of twisted wire pairs. The induction neutralizing transformer does not include a screen or shield to prevent crosstalk interference. | 03-05-2009 |
20090086830 | LVDT ACQUISITION DEVICE WITH DUAL DEMODULATION SUBSYSTEM - The invention relates to position sensors of the linearly variable induction difference type. When cost constraints prevent the use of transformers with guaranteed phase-shift tolerance to achieve an accuracy objective, it is advantageous to provide an independent demodulation of the signals of the two windings. The error signal thus has a lower dependence on the phase shift and the accuracy is typically enhanced by a factor greater than an order of magnitude. | 04-02-2009 |
20090196358 | Method and Apparatus for Signal Transmission - A signal transmission arrangement and a method for transmitting signals are disclosed. | 08-06-2009 |
20090323831 | Digital video physical layer using a multi-level data code - Digital video data is transmitted from a video source ( | 12-31-2009 |
20100098175 | Electric power transmission system for communications with noise elimination arrangement - An electric power transmission system for communications includes on/off switches; high-voltage power assemblies; groups of high-voltage devices each being powered by the high-voltage power assembly; a carrier waves communications network comprising a transformer and filter, a filter, and a carrier waves coupling device interconnecting the transformer and filter and the filter, wherein the transformer and filter includes a low-voltage power assembly for communications and the filter includes a high-voltage power assembly for communications; and low and high-voltage devices. Data can be communicated between the low-voltage devices, between the high-voltage devices, or between the low-voltage device and the high-voltage device by transmitting carrier waves over the AC power. | 04-22-2010 |
20100104031 | SYSTEM FOR ELECTRICAL POWER SUPPLY AND FOR TRANSMITTING DATA WITHOUT ELECTRICAL CONTACT - The invention relates to an assembly comprising a power transmitter (E) and a power receiver (R) respectively comprising a primary coil ( | 04-29-2010 |
20100111202 | Method and apparatus for generating a common-mode reference signal - A method and apparatus to generate a common-mode reference signal. A common-mode current is received at a common-mode current sensing circuit. The common-mode current is sampled at a node between the common-mode current sensing circuit and a shunt resistor. The resulting voltage across the shunt resistor from the applied common-mode current is used as a common-mode reference signal. | 05-06-2010 |
20100118984 | NETWORK TRANSMITTING APPARATUS AND POWER SAVING METHOD THEREOF - A network transmitting apparatus and a power saving method thereof are provided. The network transmitting apparatus includes a chip, a transformer, and a power regulating unit. The chip includes a detecting and controlling unit, an analog circuit, and a digital circuit. The detecting and controlling unit receives a received signal and detects the received signal and a state of the chip to generate a first control signal. The transformer has a first side coupled to the chip and a second side. The power regulating unit coupled to the detecting and controlling unit and a center tap of the first side of the transformer is used for receiving a voltage, generating a first regulated voltage according to the first control signal, and connecting the first regulated voltage to the center tap of the first side of the transformer, the analog circuit, and the digital circuit. | 05-13-2010 |
20100118985 | METHOD AND SYSTEM FOR CURRENT-MODE POWER LINE COMMUNICATIONS - An apparatus and method includes a solar panel. A power bus is coupled to the solar panel, and supports transmission of AC communication signals. The power bus includes a high current power wire. A current transformer is coupled to the power bus adjacent the solar panel. A capacitor, coupled to the power bus, is connected in parallel with the solar panel, and connected between the solar panel and the current transformer. | 05-13-2010 |
20100239030 | METHOD AND APPARATUS FOR DETECTION OF LOAD IMPEDANCE MODULATION IN A TRANSFORMER CIRCUIT - A method and apparatus for detection of load impedance modulation as a result of communication of data from the secondary to the primary side of a transformer are presented. The load impedance on the secondary of the transformer barrier is modulated differentially using data to be communicated across the barrier. A detection circuit on the primary side isolates the load current from the magnetizing current in the primary. The load current is subsequently integrated over two consecutive Manchester periods and the integrated value from the first Manchester period is compared against that of the second period thereby recovering the receive data. | 09-23-2010 |
20100254465 | APPARATUS FOR TRANSMISSION OF ELECTRICAL ENERGY AND INFORMATION - An apparatus for transmission of electrical energy and data between a primary side and a secondary side. At least one transferring unit is provided between the primary side and the secondary side, that, on the secondary side, at least a first data channel is provided, which has at least one address, that, on the primary side, at least one frequency control unit is provided, which is embodied in such a manner that the frequency control unit sets the working frequency of the transferring unit corresponding to data to be transferred and/or corresponding to the addressing of at least the first data channel, that, on the secondary side, at least one load setting unit is provided, which is embodied in such a manner that the load setting unit sets the electrical load, which lies on the secondary side on the transferring unit, corresponding to data to be transferred and/or corresponding to the address at least of the first data channel. | 10-07-2010 |
20100290542 | System for Providing Power and Data Transmission Between a Door and a Frame - A system for providing wire-free and contact free electric power and communication connection in a security installation between a door and a frame. The cores, windings, and control circuits of first and second portions of a split core transformer are disposed in the frame and the door, respectively. Power applied to the first portion induces a voltage and current in the second portion when the door is in a closed position. Modulation of the voltage amplitude in either the first or second portion defines a communication signal between the door and the frame. Status and data are transmitted at data rates that are essentially twice the frequency of the voltage applied to the split core transformer. In a second embodiment, voltage transfer occurs at 20 KHz and data transfer is in the range of 100K baud. | 11-18-2010 |
20100322323 | METHOD AND APPARATUS FOR TRANSMITTING DATA AND POWER ACROSS A TRANSFORMER - Encoding of a dual mode digital signal for transfer using a dual mode super source follower circuit to drive the signal across a pulse transformer is presented. The dual mode signal comprises data in one mode and power/control in the other mode. In the power/control mode the magnitude of the signal pulses are greater than the magnitude of the data pulses. Thus, the current sinking deficiencies of the super source follower may introduce waveform irregularities when transitioning from the high of the power pulse to the high of the data pulse. An encoding method described herein uses a return to zero scheme to avoid such waveform irregularities during power to data transitions. | 12-23-2010 |
20100329364 | TRANSMISSION AND RECEPTION APPARATUS FOR DIGITAL SIGNALS - A transmission and reception apparatus for at least one digital data signal is described. The digital data signal is characterized by two logical levels, first and second logical levels, with said second logical level higher than the first logical level. The apparatus comprises a transmitter, a receiver and a galvanically isolated interface arranged between the transmitter and the receiver; said transmitter, receiver and interface are arranged so as to form a two-level isolated digital channel and the transmitter comprises a block adapted to send a clock signal to the receiver. The receiver comprises, a circuit adapted to synchronize the receiver and the transmitter using the received clock signal and a circuit adapted to memorize information related to the synchronization in a storage element to hold the synchronization while the receiver is receiving said digital data. The transmitter block is adapted to send said digital data signal after the synchronization of the receiver and transmitter. | 12-30-2010 |
20110013705 | TRANSMITTING DEVICE - The invention discloses a transmitting apparatus. The transmitting apparatus uses the same transmission medium to transmit two signals that are within different frequency ranges at the same time. The transmitting apparatus increases the transmitting paths of the transmission medium so as to enhance the use of the transmission medium and save the production costs. | 01-20-2011 |
20110051820 | Power 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. | 03-03-2011 |
20110075741 | MULTIMODE ETHERNET LINE DRIVER - A multimode line driver circuit is provided. The multimode line driver circuit has a first driver circuit for receiving a first differential input signal and transmitting a first differential output signal, and a second driver circuit for receiving a second driver circuit for receiving a second differential input signal and transmitting a second differential output signal. The multimode line driver circuit also has a first switch coupling the first driver circuit to a first power supply and a second switch coupling the second driver circuit to a second power supply. The multimode line driver circuit also has a transformer coupled to the output interface for transforming the first differential output and the second differential output and a mode controller configured to close the first switch in the first mode and to close the second switch in the second mode. | 03-31-2011 |
20110150106 | System and Method for Bi-Phase Modulation Decoding - One embodiment of the present invention includes a decoder system that decodes a bi-phase modulated signal to generate an output code. The system includes a first filter associated with a first logic state configured to generate a first dot product of a plurality of consecutive digital samples of the bi-phase modulated signal and a respective plurality of tap weights of the first filter. The system also includes a second filter associated with a second logic state configured to generate a second dot product of the plurality of consecutive digital samples of the bi-phase modulated signal with a respective plurality of tap weights of the second filter. The system further includes a comparator configured to compare the first and second dot products and to provide the output code as a bit having one of the first logic state and the second logic state based on the comparison. | 06-23-2011 |
20110158329 | SYSTEM AND METHOD FOR BI-PHASE MODULATION DECODING - One embodiment of the present invention includes a decoder system that decodes a bi-phase modulated signal. The system includes a buffer configured to store a first plurality of digital samples associated with a first bit of the bi-phase modulated signal and a second plurality of digital samples associated with a second bit of the bi-phase modulated signal. The first bit can immediately precede the second bit. The system also includes a first summer configured to add the first plurality of digital samples to generate a first sum and a second summer configured to add the second plurality of digital samples to generate a second sum. The system further includes a comparator configured to compare the first sum and the second sum to determine an edge-transition between the first bit and the second bit, and to determine a logic-state of the first bit based on the edge-transition. | 06-30-2011 |
20110249759 | MULTI-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. | 10-13-2011 |
20120057642 | Digital Video Physical layer using a Multi-Level Data Code - A system for communicating data comprises a clock channel configured to transmit a clock signal at a predetermined rate and at least one data channel configured to transmit data as a sequence of blocks of multi-level symbols being sent at a fixed multiple of the clock rate. Each block of multi-level symbols comprises a sequence of at least three multi-level symbols. Each multi-level symbol has an analog voltage level selected from a predetermined number of possible values, the predetermined number being an integer greater than two. The fixed multiple of the clock rate is an integer greater than one. | 03-08-2012 |
20120106656 | USE 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. | 05-03-2012 |
20120134428 | METHOD AND SYSTEM FOR SYNCHRONIZING A NETWORK USING EXISTING NETWORK CABLES - A method and system for temporally synchronizing a plurality of end systems within a network of end systems is provided. The system includes a synchronizing transmitter communicatively coupled to a message transmitter and to a message receiver of a master physical interface (PHY) device of a first end system of a local area network (LAN) and a synchronizing receiver communicatively coupled to a message transmitter and to a message receiver of a slave PHY device of a second end system of a local area network (LAN), where the synchronizing transmitter is configured to transmit a timing message to the synchronizing receiver using a first differential twisted pair connection and using a second differential twisted pair connection and the synchronizing transmitter is configured to transmit a synchronizing pulse to the synchronizing receiver using the first differential twisted pair connection and using the second differential twisted pair connection. | 05-31-2012 |
20120183085 | MODULE FOR POWERLINE COMMUNICATION TRANSMISSION - A powerline communication (PLC) transmission module transmits a signal over a three-line electrical mains supply. The PLC transmission module includes at least two coupling transformers, each transformer coupling the signal to first and second line-pairs of a three-line electrical mains supply, the first and second line-pairs different from one another. Driving circuitry drives a first version of the signal over the first line-pair and a second version of the signal over the second line-pair. Inversion circuitry selectively inverts one version of the signal relative to the other version of the signal, dependent upon an enacted transmission mode. The inversion circuitry may invert neither/both of the versions of the signal so that the signal is transmitted as a differential-mode signal on the line-pairs or invert one of the first and second versions of the signal relative to the other so that the signal is a common-mode signal. | 07-19-2012 |
20120263243 | SYSTEM FOR COMMUNICATING OVER A POWER CABLE - A system for communicating over a power cable has a power line connected to a power source at one end, a switch mode transformer connected to the power line at the other end for transforming voltage received from the power source through the power line, modulation of the switch mode transformer, and a receiver situated at the power source end and adapted to detect and process ripple signals from the switch mode transformer propagated on the power line. | 10-18-2012 |
20130034173 | DIGITAL COMMUNICATION SYSTEM - A digital communication system comprising a host and a client, the host calls the client via two transmission lines. The host includes a processor, a first control unit, a second control unit, a high frequency transformer and an interface unit. The digital communication system utilizes the first control unit and the high frequency transformer to modulate outgoing signals. The digital communication system utilizes the second unit and the high frequency transformer to demodulate incoming signals. | 02-07-2013 |
20130101057 | SYSTEM AND METHOD FOR APPLYING MULTI-TONE OFDM BASED COMMUNICATIONS WITHIN A PRESCRIBED 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 and a second mode. The interleaver performs repetitive encoding when placed in the second mode. The modulation module is adapted to compensate for attenuations that are to be realized during propagation of a transmitted signal over the power line. The spectral shaped module is adapted to compensate for amplitude distortion and further compensates for attenuations that will be realized during propagation of the transmitted signal over the power line. | 04-25-2013 |
20130202053 | COMMUNICATING OVER POWER DISTRIBUTION MEDIA - A system includes a first communication module to be coupled to a first transmission medium for distributing power using a voltage waveform having a first amplitude; and a second communication module to be coupled to a second transmission medium for distributing power using a voltage waveform having a second amplitude different from the first amplitude, the second transmission medium being coupled to the first transmission medium. Each of the first and second communication modules is configured to use signals that propagate between the first and second transmission media. | 08-08-2013 |
20130230113 | Electrical Device for a Powerline System for Data Transmission and Powerline System for Data Transmission - An electrical device is provided for a power line system for data transmission, including at least one line of a power supply network, at least one signal line, and a coupling region wherein the at least one line of the power supply network and the at least one signal line are partially arranged. The at least one line of the power supply network and the at least one signal line are electrically isolated from each other and capacitively coupled to each other in the coupling region. A motor vehicle is equipped with the power line system for data transmission. | 09-05-2013 |
20130259144 | RECEIVER AND SEMICONDUCTOR INTEGRATED CIRCUIT HAVING THE SAME - A receiver includes a positive pulse determination circuit and a negative pulse determination circuit. The positive pulse determination circuit outputs a first L-level between when a pulse signal having a negative amplitude is detected and when neither a pulse signal having a positive amplitude nor a pulse signal having a negative amplitude is detected; otherwise a first H-level if a pulse signal having a positive amplitude is detected during another period. The negative pulse determination circuit outputs a second L-level between when a pulse signal having a positive amplitude is detected and when neither a pulse signal having a positive amplitude nor a pulse signal having a negative amplitude is detected; otherwise a second H-level is output if a pulse signal having a negative amplitude is detected during the other period. | 10-03-2013 |
20130259145 | MULTI-BIT DIGITAL SIGNAL ISOLATOR - The invention is directed to a multi-bit digital signal isolation system including a plurality of micro-transformers, each having a primary winding and a secondary winding, a transmitter circuit receiving a multi-bit signal and transmitting an encoded logic signal across the plurality of micro-transformers corresponding to the multi-bit signal, the primary winding of each micro-transformer receiving a signal corresponding to one of at least three possible states, and a receiver circuit receiving the encoded logic signal from the secondary windings of the plurality of transformers, decoding the encoded logic signal and reconstructing the received multi-bit signal based upon the decoded signal. | 10-03-2013 |
20130301745 | POWER OVER ETHERNET FOR BI-DIRECTIONAL ETHERNET OVER SINGLE PAIR - A magnetics based hybrid circuit, comprising a receiver side transformer and a transmitter side transformer is described. Power is supplied via respective inductive elements coupled to respective first end of the receiver side transformer and the transmitter side transformer. A DC blocking element is further provided in series between the second end of the receiver side primary winding and the second end of the transmitter side primary winding. | 11-14-2013 |
20140112399 | POWER LINE COMMUNICATION METHOD AND APPARATUS - An Apparatus for transmitting and receiving signals over residential electrical cables includes a processor, at least one transmitter and at least one receiver, both coupled with the processor. The apparatus coupled with an electrical cable includes at least one active wire, one neutral wire and one ground wire, the transmitter and the receiver each including a coupling circuit for coupling the apparatus to the residential electrical cables. The coupling circuit has a first transformer and a second transformer, the first transformer including a center tap, receive wire pairs and transmit wire pairs each being formed from at least two of the active wire, the neutral wire, the ground wire and the midpoint. The processor dynamically switches a coupling of the receiver and the transmitter respectively between the receive wire pairs and the transmit wire pairs. | 04-24-2014 |
20140112400 | POWER LINE COMMUNICATION METHOD AND APPARATUS - A system for transmitting and receiving signals over residential electrical cables includes at least one active wire, neutral wire and ground wire, including at least two power line modems, each coupling an electrical device with an electrical socket, each one of the power line modems including a processor. The system has transmitters and at least one receiver, the transmitters and the receiver including a coupling circuit, the coupling circuit including a first transformer and a second transformer, the first transformer including a center tap. Receive and transmit wire pairs are respectively formed from two of the active, neutral and ground wires and the midpoint, the transmitters defining a carrier wave set over the transmit wire pair. The processor determines a frequency carrier wave for the signals and provides the signals to a respective one of the transmitters according to the carrier wave set the frequency carrier wave is in. | 04-24-2014 |
20140133586 | Signal Transmission Arrangement with a Transformer and Signal Transmission Method - A circuit arrangement with a transmission arrangement is disclosed including a transformer. | 05-15-2014 |
20140192908 | PARALLEL HYBRID CIRCUIT - A parallel hybrid circuit comprising a transformer, a first matching resistor, a second matching resistor and an echo cancelling circuit. The transformer comprises: a first side, comprising a transmitting coil group and a receiving coil group, wherein the transmitting coil group comprises at least one transmitting coil, wherein the receiving coil group comprises at least one receiving coil; a second side comprising at least one transceiving coil; wherein the transformer receives a transmitting signal and couples the transmitting signal from the first side to the second side via a first turn ratio, and receives a receiving signal from the transceiving line and couples the receiving signal from the second side to the first side via a second turn ratio. The first, second matching resistors are coupled with the transformer in parallel. The echo cancelling circuit is coupled between the transmitting line and the receiving line. | 07-10-2014 |
20140192909 | Apparatus for diversity coupling power line signals into a three-conductor power supply network - The present invention relates to an apparatus for coupling a modem to a power supply network for transferring data via the power supply network, comprising a power connector, which is configured to connect the apparatus to a phase conductor, a neutral conductor and a protective earth conductor of the power supply network, a transformer, comprising a secondary winding, a first primary winding and a second primary winding connected in series to the first primary winding, wherein the apparatus is configured to couple at least in terms of high frequency a secondary transmission channel to two primary transmission channels. | 07-10-2014 |
20140192910 | COMMUNICATION SYSTEM AND COMMUNICATION DEVICE - An output circuit sends out, to an input circuit, a control pilot signal generated by a voltage source. A voltage transformer is provided to a control pilot line on the output side of the output circuit, and a communication unit transmits and receives communication signals via the voltage transformer. A voltage transformer is provided to the control pilot line on the input side of the input circuit, and a communication unit transmits and receives the communication signals via the voltage transformer. A low-pass filter is provided to the control pilot line between the input circuit and the voltage transformer. | 07-10-2014 |
20140211868 | ELECTRICAL DEVICE FOR MULTIPLE-SIGNAL INJECTION ONTO MULTIPLE-CONDUCTOR COMMUNICATIONS MEDIUM - An electrical device includes signal ports, transformers, and a differential mode device. The transformers are in communication with the signal ports, respectively. The transformers are configured to receive input signals, respectively, from the signal ports. Each transformer is configured to inject the respective input signal onto a pair of output lines of the transformer. The differential mode device is connected to a first output line of the pair of output lines of a first transformer exclusive of connection to a second output line of the first transformer. The differential mode device is configured to inject a signal from the first output line onto the pair of output lines of a second transformer. Signals from the pair of output lines of the second transformer are injected onto a pair of conductors, respectively, of a communications medium. | 07-31-2014 |
20140233662 | A SYSTEM AND METHOD FOR INFERRING SCHEMATIC AND TOPOLOGICAL PROPERTIES OF AN ELECTRICAL DISTRIBUTION GRID - A system and method for inferring schematic and topological properties of an electrical distribution grid is provided. The system may include Remote Hubs, Subordinate Remotes, a Substation Receiver, and an associated Computing Platform and Concentrator. At least one intelligent edge transmitter, called a Remote Hub Edge Transmitter, may transmit messages on the electrical distribution grid by injecting a modulated current into a power main that supplies an electric meter. The Subordinate Remotes, Remote Hubs, the Substation Receiver, and the associated Computing Platform and Concentrator may contain processing units which execute stored instructions allowing each node in the network to implement methods for organizing the on-grid network and transmitting and receiving messages on the network. The Substation Receiver, Computing Platform and Concentrator may detect and infer schematic grid location attributes of the network and publish the detected and inferred attributes to other application systems including geospatial information systems maintaining the logical and physical network model. | 08-21-2014 |
20140247893 | COMMUNICATION SYSTEM AND COMMUNICATION DEVICE - Provided are a communication system and a communication device capable of suppressing attenuation of a communication signal superimposed upon a control pilot line. This output circuit ( | 09-04-2014 |
20140254694 | COMMUNICATION SYSTEM AND COMMUNICATION DEVICE - This output circuit sends a control pilot signal which has been generated at a voltage generation source to an input circuit. Between the control pilot line and the ground line of the output side of the output circuit, a communication unit is connected via a transformer. Between the control pilot line and the ground line of the input side of the input circuit, a communication unit is connected via a transformer. Between the output circuit and the transformer, a lowpass filter is interposed. Between the input circuit and the transformer, a lowpass filter is interposed. | 09-11-2014 |
20140254695 | COMMUNICATION SYSTEM - A charging station performs communications by use of a superimposing/separating unit configured by connecting a capacitor, a coupling transformer and a capacitor to branch lines branching out respectively from a control cable and a grounded cable. An electric vehicle performs communications by use of a superimposing/separating unit configured by providing a coupling transformer to the control cable. A capacitor is also connected between the control cable and the grounded cable. Communications are allowed by the configuration of a closed loop circuit comprising the control cable, the branch line, the capacitor, a primary coil of the coupling transformer, the capacitor, the branch line, the grounded cable, the capacitor, and a primary coil of the coupling transformer. | 09-11-2014 |
20140269952 | POWERLINE COMMUNICATION ADAPTER FOR POWERLINE COMMUNICATION SYSTEMS - A powerline communication adapter may couple powerline communication signals between a network device and a powerline communication network. The powerline communication adapter may comprise of a first electrical connector including an electrical socket and a second electrical connector including an electrical plug. The powerline communication adapter may include a coupling unit coupled between the first electrical connector and the second electrical connector. The coupling unit may be configured to couple a powerline communication signal received via the first electrical connector to the second electrical connector to transmit the powerline communication signal via at least two powerline communication channels in the powerline communication network. | 09-18-2014 |
20140269953 | POWER LINE COMMUNICATION SYSTEM - A disclosed PLC system includes a PLC modem electrically connected to a transmission medium that transmits or carries medium or high voltage without electrical isolation. The PLC system further includes a voltage divider that draws power from the transmission medium to the PLC modem, thereby eliminating a need of a separate power source for operating the PLC modem. Since the PLC modem is electrically connected to the transmission, the PLC modem or communication connections of the PLC modem may be located at a same potential level as the transmission medium and thus the PLC modem does not see a surge during a surge event occurs in the transmission medium. Therefore, the disclosed PLC system eliminates the use of a line coupler and a surge protection component for providing high-voltage isolation and surge protection to the PLC modem. | 09-18-2014 |
20140286446 | RECEIVER AND SEMICONDUCTOR INTEGRATED CIRCUIT HAVING THE SAME - A receiver includes a positive pulse determination circuit and a negative pulse determination circuit. The positive pulse determination circuit outputs a first L-level between when a pulse signal having a negative amplitude is detected and when neither a pulse signal having a positive amplitude nor a pulse signal having a negative amplitude is detected; otherwise a first H-level if a pulse signal having a positive amplitude is detected during another period. The negative pulse determination circuit outputs a second L-level between when a pulse signal having a positive amplitude is detected and when neither a pulse signal having a positive amplitude nor a pulse signal having a negative amplitude is detected; otherwise a second H-level is output if a pulse signal having a negative amplitude is detected during the other period. | 09-25-2014 |
20140307812 | POWER LINE COMMUNICATION DEVICE AND POWER CONTROL METHOD THEREOF - A power line communication device and a power control method thereof are provided. The power line communication device, coupled to a power line in a power line communication system, includes a transmitter, a power coupler, a signal detector and a controller. The transmitter is configured to produce a transmit signal. The power coupler, coupled to the transmitter, is configured to couple the transmit signal to the power line. The signal detector, coupled between the transmitter and the power coupler, is configured to detect the transmit signal. The controller, coupled to the transmitter and the signal detector, is configured to adapt a dynamic range of the transmitter based on the detected transmit signal without conducting a channel sounding procedure. | 10-16-2014 |
20140369433 | CIRCUIT ARRANGEMENT AND METHOD FOR BIDIRECTIONAL DATA TRANSMISSION - A transformer arrangement for signal transmission is provided, the transformer arrangement having at least one transformer with a primary coil and a secondary coil and a controller. The controller is configured in a magnetization phase to control a first current to flow through the primary coil to increase until a predefined criterion is fulfilled, wherein the magnetization phase is longer than a time constant of the primary coil of the at least one transformer. The controller is configured in a voltage application phase to apply a voltage to the at least one transformer so that a second current flows through the primary coil, wherein the second current has a polarity which changes during the voltage application phase compared with the first current, wherein the voltage application phase is shorter than two times the time constant of the primary coil of the at least one transformer. | 12-18-2014 |
20140376647 | SYSTEM AND METHOD FOR APPLYING MULTI-TONE OFDM BASED COMMUNICATIONS WITHIN A PRESCRIBED 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 and a second mode. The interleaver performs repetitive encoding when placed in the second mode. The modulation module is adapted to compensate for attenuations that are to be realized during propagation of a transmitted signal over the power line. The spectral shaped module is adapted to compensate for amplitude distortion and further compensates for attenuations that will be realized during propagation of the transmitted signal over the power line. | 12-25-2014 |
20150030089 | Current Loop Voltage Modulator for Communication Interface - Systems for communicating over a communication interface are provided. An integrated circuit includes circuitry for monitoring a current flowing between two terminals of the integrated circuit. The integrated circuit also includes a voltage driver circuit for modulating a voltage between two terminals of the integrated circuit. The voltage driver modulates the voltage across the two terminals of the integrated circuit to encode data according to the Highway Addressable Remote Transducer protocol. | 01-29-2015 |
20150139342 | Apparatus for MIMO coupling power line signals into a three-conductor power supply network via two channels - The present invention relates to an apparatus for coupling a modem to a power supply network for transmitting data via the power supply network, comprising a mains connection, which is configured to connect the apparatus to a phase conductor, a neutral conductor and a protective earth conductor of the power supply network, with the apparatus comprising a first transformer element comprising a primary side winding, a first secondary side winding and a second secondary side winding, and with the apparatus comprising a second transformer element comprising a primary side winding, a first secondary side winding and a second secondary side winding. | 05-21-2015 |
20150146801 | COMMUNICATION NETWORK AND WIDE AREA COMMUNICATION NETWORK - A first communication device is connected in a conductive state to a first power line extending from a secondary side of a transformer in a high-voltage power receiving apparatus to a primary side of breakers in a plurality of distribution boards that receive power supply from the transformer. A plurality of second communication devices are respectively connected to a plurality of second power lines respectively extending from a secondary side of the breakers in the plurality of distribution boards. Each second communication device performs power line communication using the second power line connected thereto as a transmission path. Upon receipt of a communication signal, each of the first communication device and the plurality of second communication devices generates a new communication signal including information included in the communication signal and sends the new communication signal through power line communication. | 05-28-2015 |
20150349843 | METHOD AND APPARATUS FOR WIRED SIGNAL TRANSMISSION - A method and apparatus for high quality signal transmission, which utilizes normal-mode current flow and produces an audio output signal with suppression of normal-mode voltage amplitude, comprising transmitting an audio input signal source though (1) a buffer amplifier; (2) a modulated current source; (3) a pair of wires; (4) a current transformer; and (5) a receiver amplifier for said current transformer. | 12-03-2015 |
20150381237 | METHODS AND SYSTEMS FOR SERVER POWER LINE COMMUNICATION - A server system includes a common power bus, a power supply to provide direct current (DC) power through the common power bus, at least one node including a processor to receive the DC power through the common power bus, a transmitter capacitive coupled to the common power bus to transmit a power information signal from the power supply through the common power bus, and at least one receiver capacitive coupled to the common power bus to receive the power information signal transmitted by the transmitter and to provide the received power information signal to the at least one node. A plurality of buffers respectively coupled between the common power bus and each of the power supply and the at least one node provide path separation for high frequency and low frequency currents. | 12-31-2015 |
20160028440 | METHOD FOR DATA TRANSMISSION - A method for transmitting data in a direction of transmission of a clock signal, wherein positive and negative edges of the clock signal are transmitted by pulses with opposite polarity, wherein the polarity of the pulses is not inverted when no data is transmitted, and wherein the polarity of at least one pulse is inverted when data is transmitted. | 01-28-2016 |
20160142103 | TRANSMITTER PATH FOR POWER LINE COMMUNICATION DEVICES - A transmitter path of a power line communication (PLC) device is described. In an embodiment, the transmitter path may include an amplifier, a capacitor coupled to the amplifier, a shared transformer coupled to the capacitor, and a plurality of line interface coupling circuits coupled to the shared transformer, where each of the line interface coupling circuits is configured to be connected to a different phase of an electrical power circuit. | 05-19-2016 |
20160149613 | SUBSEA DATA COMMUNICATION INTERFACE UNIT - A subsea data communication interface unit for enabling data communication over a subsea data transmission line is disclosed. The subsea data communication interface unit includes at least an electrical interface for providing an electrical connection to the subsea data transmission line and a transmitter adapted to generate a data signal corresponding to the data to be transmitted. To obtain stable, robust and reliable communication, it is proposed that the subsea data communication interface unit includes a first voltage amplifier connected between the transmitter and the electrical interface. The first voltage amplifier is configured to convert the data signal generated by the transmitter from a lower voltage signal to a higher voltage signal. | 05-26-2016 |
20160380675 | METHODS AND SYSTEMS FOR SERVER POWER LINE COMMUNICATION - A server system includes a common power bus, a power supply to provide direct current (DC) power through the common power bus, at least one node including a processor to receive the DC power through the common power bus, a transmitter capacitive coupled to the common power bus to transmit a power information signal from the power supply through the common power bus, and at least one receiver capacitive coupled to the common power bus to receive the power information signal transmitted by the transmitter and to provide the received power information signal to the at least one node. A plurality of buffers respectively coupled between the common power bus and each of the power supply and the at least one node provide path separation for high frequency and low frequency currents. | 12-29-2016 |