39th week of 2013 patent applcation highlights part 38 |
Patent application number | Title | Published |
20130250968 | METHOD AND NETWORK ENTITY FOR OBTAINING IP ADDRESS OF USER - The present invention relates to a method and a network entity for obtaining an IP address of a user. The method includes: receiving, by a first network element from a second network element, a message for obtaining an IP address of a user; allocating, by the first network element, an IP address to the user, and sending the IP address to the second network element; and receiving, from a gateway, a search message that carries the IP address, learning an identity of the user, and sending the identity of the user to the gateway. | 2013-09-26 |
20130250969 | OPTIMIZING THROUGHPUT OF DATA FRAMES IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) COMMUNICATION NETWORKS - In one embodiment, a device maintains a predetermined number of high-priority subcarriers for use in communicating high-priority data frames and a predetermined number of low-priority subcarriers for use in communicating low-priority data frames. A data frame is received and a data frame priority is determined for the data frame. If the data frame is determined to be a low-priority data frame, a minimum number of subcarriers, from the low-priority subcarriers, required for communication of the data frame is determined and the data frame is communicated using the minimum number of subcarriers. If the data frame is determined to be a high-priority data frame, a maximum number of subcarriers available, including the high-priority subcarriers and the low-priority subcarriers, is determined and the data frame is communicated using the maximum number of subcarriers. | 2013-09-26 |
20130250970 | NETWORK DIAL-UP METHOD AND APPARATUS - A network dial-up method includes: performing a negotiation in a Point-to-Point Protocol (PPP) discovery stage for each dial-up request respectively when more than one dial-up request is received,; creating a virtual PPP interface for each dial-up request; configuring the virtual PPP interfaces; coupling the virtual PPP interfaces to a physical PPP interface, where the physical PPP interface is coupled to more than one of the virtual PPP interfaces, and the physical PPP interface performs round robin processing for the virtual PPP interfaces; and performing negotiations in a PPP session stage by way of the virtual PPP interfaces, thereby succeeding in dial-up after completing the negotiations in the PPP session stage. | 2013-09-26 |
20130250971 | Methods and Apparatus for Transmitting Data Streams Via A Heterogeneous Network - Methods and apparatus that enable a community of devices having differing underlying protocols to stream media data such as video or audio data. In one exemplary embodiment, this invention enables IEEE 1394-compliant (“FireWire” enabled) devices to communicate across an Ethernet infrastructure, such as one enabled by the Ethernet AVB Standard(s). This enhances connectivity, and also supports obviating one or more physical ports within the device(s). In another embodiment, or more wireless transports are utilized. | 2013-09-26 |
20130250972 | ISOCHRONOUS DEVICE COMMUNICATION MANAGEMENT - Various embodiments of the invention relate to apportioning a total memory bandwidth available for a time period amongst a plurality of bandwidth requests according to a power managed profile. In addition, isochronous data transmission may be appended together and transmitted according to a data transmission policy, wherein the policy may include transmitting the appended isochronous data during an opportunistic data transmission, or during a time identified for transmitting a combined isochronous data transmission, but prior to a time delay compliance limit for isochronous requirements. | 2013-09-26 |
20130250973 | METHOD AND SYSTEM FOR ENCODING AND DECODING LENGTH OF MEDIUM ACCESS CONTROL PROTOCOL DATA UNIT - A method and system for encoding the length of a Medium Access Control (MAC) Protocol Data Unit (PDU) is provided. The method includes partitioning the length of the MAC PDU into a first part and a second part when the length of the MAC PDU is greater than a first predefined value, encoding the first part in a first header of the MAC PDU, encoding the second part in a second header of the MAC PDU, encoding the length of the MAC PDU in a first header of the MAC PDU when the length of the MAC PDU is less than or equal to first predefined value, and transmitting the MAC PDU with the encoded length of the MAC PDU to a receiving communication device. In another embodiment, the invention includes a method and apparatus for decoding an encoded length of a MAC PDU. | 2013-09-26 |
20130250974 | METHOD AND APPARATUS FOR MAPPING AND DE-MAPPING SERVICE DATA - A method for generating a de-mapping clock for service data is provided, comprising: receiving a data frame and obtaining a payload value from the data frame; obtaining distribution of valid service data in a certain time cycle according to the payload value in the data frame; generating a data writing clock according to the distribution of the valid service data, performing a homogenization treatment on the data writing clock, and obtaining the data writing virtual clock; comparing a non-gap statistical quantity of the data writing virtual clock with a non-gap statistical quantity of the service clock gap, and generating a de-mapping clock gap according to the comparison result; generating a service clock gap according to the de-mapping clock gap; and performing a phase-locked loop process on the de-mapping clock gap, so as to obtain a recovery clock signal required by a de-mapping process. | 2013-09-26 |
20130250975 | METHOD AND DEVICE FOR PACKETIZING A VIDEO STREAM - A digital broadcasting system provides a method and device for packetizing a video stream. The packetizing device includes: a video frame check block for classifying an encoded video stream according to the frame type; a header setting block for setting a packet header for each of the classified frames; and a packetizing block for packetizing a video frame on the basis of the set packet header. The frame type may be one of an intra-coded (I) frame, a predicted (P) frame, and a bi-predictive (B) frame. Since a digital broadcasting stream is efficiently packetized, overhead due to a typical synchronization packet may be reduced, and accordingly, bandwidth may be efficiently used. | 2013-09-26 |
20130250976 | METHOD FOR THE CLOCK SYNCHRONIZATION OF A PLURALITY OF MODULES - The invention relates to a method or an arrangement for the clock synchronization of a plurality of distributed modules of an information or communication system, said modules being coupled via a packet-switched network. At least two of said modules are controlled by a local clock generator of the modules using an adjustable frequency, and a clock signal is transmitted via the network in the form of clock signal packets in a synchronous minter with respect to the local clock of the modules. One of said at least two modules takes over the function of a master module, and all remaining said at least two modules, the slave module(s), synchronize the local clock of the modules with the clock of the master module, wherein said slave modules ascertain a measurement for the deviation of the local clock generator of the modules relative to the clock generator of the master module by comparing the clock signal transmitted by the master module with the clock signal of the modules and use said measurement in order to regulate the local clock generator of the modules. | 2013-09-26 |
20130250977 | WAVELENGTH MULTIPLEXER/DEMULTIPLEXER APPARATUS - An apparatus comprising an optical multiplexer/demultiplexer having a set of input ports and a set of output ports, the optical multiplexer/demultiplexer configured to demultiplex a wavelength division multiplexed optical signal to one port of the set of input ports, and to output a plurality of demultiplexed wavelength channels to one of a plurality of subsets of output ports within the set of output ports. The apparatus comprises an optical switch configured to route the wavelength division multiplexed signal to a selected one of the input ports, thereby causing the plurality of demultiplexed wavelength channels to be output by the optical multiplexer/demultiplexer to selected ones of the plurality of subsets of output ports. | 2013-09-26 |
20130250978 | LASER BASED FREQUENCY STANDARDS AND THEIR APPLICATIONS - Frequency standards based on mode-locked fiber lasers, fiber amplifiers and fiber-based ultra-broad bandwidth light sources, and applications of the same. | 2013-09-26 |
20130250979 | STABILIZING BEAM POINTING OF A FREQUENCY-CONVERTED LASER SYSTEM - A beam-stabilized laser system using optical frequency conversion in a nonlinear optical crystal is disclosed. An optimal phase-matching angle in the crystal depends on both wavelength and temperature. If the crystal temperature changes, the optimal phase-matching direction will change as well. A different wavelength can be selected so that the optimal phase-matching occurs along the original beam path and returns the output beam to the original direction. Thus, a central wavelength of the laser beam illuminating the nonlinear optical crystal can be slightly adjusted to compensate for the pointing drift. Since the illuminating wavelength can normally be tuned much faster than the crystal temperature, a more agile and responsive pointing stabilization can be achieved. | 2013-09-26 |
20130250980 | SMALL PACKAGED TUNABLE LASER TRANSMITTER - A tunable laser transmitter configured in a small package subassembly coupled to a printed circuit board such as an ITLA assembly. The tunable laser transmitter includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. An optical output interface is positioned at the second end of the housing and configured to transmit a modulated optical beam. | 2013-09-26 |
20130250981 | Array Comprising a Plurality of Adjustable Optical Devices - An adjustable array includes a plurality of optical devices. Each adjustable array device has an optical light output therefrom and is configured whereby the corresponding optical lights of the plurality of optical devices have a predefined nonequivalent relationship relative to one another with respect to an output parameter. In response to a drive signal, the plurality of optical devices are further configured to adjust the corresponding optical lights with respect to the output parameter while substantially maintaining the predefined nonequivalent relationship. | 2013-09-26 |
20130250982 | GENERATING ULTRASHORT LASER PULSES BASED ON TWO-STAGE PULSE PROCESSING - Techniques and devices for producing short laser pulses, including generating ultrashort laser pulses by separating a nonlinear processing of laser pulses via nonlinear self-phase modulation (SPM) in a nonlinear optical medium from a subsequent linear processing of the laser pulses to achieve ultrashort laser pulses. | 2013-09-26 |
20130250983 | EFFICIENT AND COMPACT VISIBLE MICROCHIP LASER SOURCE WITH PERIODICALLY POLED NONLINEAR MATERIALS - A compact, optically-pumped solid-state microchip laser device uses efficient nonlinear intracavity frequency conversion for obtaining low-cost green and blue laser sources. The laser includes a solid-state gain medium, such as Nd:YVO | 2013-09-26 |
20130250984 | LASER ELEMENT HAVING A THERMALLY CONDUCTIVE JACKET - A laser element includes a laser rod and a thermally conductive jacket on an exterior surface of the laser rod. The thermally conductive jacket assists in dissipating heat generated in the laser rod during the application of pump energy to the laser rod. | 2013-09-26 |
20130250985 | LASER SYSTEM CHILLER - A laser system includes a laser element, a pump source configured to input light to the laser element, a first cooling circuit and a second cooling circuit. The first cooling circuit includes a first pump configured to drive a first flow of cooling liquid through a first fluid pathway, a first primary heat exchanger configured to cool the first flow of cooling liquid, and a laser element heat exchanger configured to remove heat from the laser element using the first flow of cooling liquid. The second cooling circuit includes a second pump configured to drive a flow of cooling liquid through a second fluid pathway, a second primary heat exchanger configured to cool the second flow of cooling liquid, and a pump source heat exchanger configured to remove heat from the pump source using the first and second flows of cooling liquid. | 2013-09-26 |
20130250986 | OPTICALLY PUMPED SURFACE EMITTING LASERS INCORPORATING HIGH REFLECTIVITY/ BANDWIDTH LIMITED REFLECTOR - Optically pumped laser structures incorporate reflectors that have high reflectivity and are bandwidth limited to a relatively narrow band around the central laser radiation wavelength. In some cases, the reflectors may be ¾-wavelength distributed Bragg reflectors (DBRs). | 2013-09-26 |
20130250987 | SEMICONDUCTOR LASER DEVICE - A semiconductor laser device comprises a base, a first conductive layer, a second conductive layer, a third conductive layer, and a semiconductor laser chip in this order, each of which has a respective emitting-side end portion. The emitting-side end portion of the first conductive layer is in a common plane with the emitting-side end portion of the base. A thickness of the second conductive layer is greater than a thickness of the first conductive layer. The emitting-side end portion of the second conductive layer is disposed inward of the emitting-end portion of the first conductive layer. The emitting-side end portion of the third conductive layer is in a common plane with the emitting-side end portion of the second conductive layer. The emitting-side end portion of the semiconductor laser chip is disposed outward of the emitting-side end portion of the third conductive layer. | 2013-09-26 |
20130250988 | ACTIVE LASER MEDIUM INCLUDING NANOPARTICLES, LASER APPARATUS INCLUDING THE ACTIVE LASER MEDIUM, AND METHOD OF MANUFACTURING NANOPARTICLES - An active laser medium includes a metal nanoparticle and a shell surrounding the metal nanoparticle, the shell including a luminophor, wherein a luminescence spectrum of the luminophor overlaps with a peak of surface plasmon resonance of the metal nanoparticle. | 2013-09-26 |
20130250989 | PROTECTION CIRCUIT FOR PROTECTING LIGHT-EMITTING DIODES OF LASER EMITTER AND PROTECTION METHOD - A protection circuit for protecting light-emitting diodes of a laser emitter is provided. The laser emitter includes a first LED for reading multimedia data stored in a first media and a second LED for reading multimedia data stored in a second media. Cathodes of the first LED and the second LED are grounded, and anodes of the first LED and the second LED are connected with soldering tin. The protection circuit includes a first protection element with a first breakdown voltage and a second protection element with a second breakdown voltage. One end of each of the first protection element and the second protection element is grounded. When the circuit is connected to the laser emitter, residual ends of the first protection element and the second protection element are respectively connected to the anodes of the first LED and the second LED. | 2013-09-26 |
20130250990 | LASER EMITTING CHIP PACKAGE - A laser emitting chip package includes a circuit board, a laser emitting chip, and at least three gold balls. The circuit board includes at least two substrate-pad areas. The laser emitting chip includes at least two chip-pad areas. Each of the chip-pad areas spatially corresponds to a respective one of the substrate-pad areas. The at least three gold balls are explanted on the at least two chip-pad areas. The laser emitting chip is supported on the circuit board by the at least three gold balls in a triangular or square arrangement between the chip-pad areas and the substrate-pad areas. The laser emitting chip is electrically connected to the circuit board through the gold balls. | 2013-09-26 |
20130250991 | Optoelectronic Devices - Optoelectronic devices have a photoactive region containing semiconductor material doped with ions of a rare earth element. Characteristic transitions associated with internal energy states of the rare earth dopant ions are modified by direct interaction of those states with an energy state in the semiconductor band structure. Eu | 2013-09-26 |
20130250992 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - A semiconductor device comprising a substrate made of a material with a hexagonal crystal structure and having a substrate axis which is perpendicular to a principal surface of the substrate; and a nitride-based group III-V compound semiconductor layer grown directly on and in contact with the principal surface of the substrate without growing a buffer layer between the substrate and the nitride-based group III-V compound semiconductor layer, wherein, a direction of a growth axis of the semiconductor layer is substantially the same as a direction of the substrate axis of the substrate. | 2013-09-26 |
20130250993 | VERTICAL CAVITY SURFACE EMITTING LASER ELEMENT, VERTICAL CAVITY SURFACE EMITTING LASER ARRAY ELEMENT, VERTICAL CAVITY SURFACE EMITTING LASER DEVICE, LIGHT SOURCE DEVICE, AND OPTICAL MODULE - Included are: an active layer provided between an upper multilayer film reflecting mirror and a lower multilayer film reflecting mirror formed on a GaAs substrate and formed of a periodic structure of a low-refractive-index layer formed of Al | 2013-09-26 |
20130250994 | SEMICONDUCTOR LASER ASSEMBLY AND METHOD FOR PRODUCING A SEMICONDUCTOR LASER ASSEMBLY - A semiconductor laser assembly has at least one semiconductor laser which is designed to emit laser radiation through an exit area and at least one further area, the further area being a part of a surface of the semiconductor laser and/or of the semiconductor laser assembly and the further area is developed to be reflecting to the radiation of at least one specifiable wavelength range. For this purpose, a reflecting metal layer is applied, for example. The semiconductor laser having a laser layer is able to be fastened to a carrier element with the aid of a solder layer. | 2013-09-26 |
20130250995 | LASER SYSTEM AND METHOD OF OPERATION - An exemplary laser system is disclosed which includes a pump laser diode array and laser gain material, in which the array generates optical radiation having a predetermined total linewidth approximately 20 nm wide constructed from a plurality of individual wavelengths with a linewidth of up to 8 nm, the centre wavelength of radiation being for example within the absorption band of laser gain material used at the centre point of the operating temperature of the array. The system can include a highly reflecting plane mirror with periodic transmitting patches placed between the laser diode array and the laser gain material, the size of the transmitting patches being such that minimal pump radiation is lost. | 2013-09-26 |
20130250996 | SLAG DISCHARGE DOOR DEVICE FOR AN ELECTRIC FURNACE - The present invention relates to a slag discharge door device for an electric furnace, wherein slag is prevented from flowing out via a slag discharge port by making a discharge control door body move up and down to and from the upper surface of a supporting body where slag is discharged by flowing to the upper surface, and the discharge of slag is controlled, such that during steel-making work in the electric furnace, the outflow of slag is prevented and heat losses are reduced, the efficiency of arc heat due to the formation of foamed slag is increased, and valuable metals are recovered from the molten slag thereby increasing the percentage of molten steel recovered. | 2013-09-26 |
20130250997 | FAST RESPONSE THERMOPILE POWER SENSOR - A power measuring sensor for an optical beam which utilizes the temperature difference across a thin layer of heat insulating material, generated by the axial flow of the absorbed beam, from an absorber layer on which the beam impinges, to a cooled heat sink which dissipates the heat after passage through the sensor. The axial heat flow is measured by means of a continuous matrix of adjacent thermocouple junctions over the heat flow region of the sensor disc, with the thermal insulating layer, which generates the temperature drop, having thicker and thinner regions at alternate junctions. The junctions on the thicker regions of the insulator thus become the hot junctions, and those on the thinner regions of the insulating layer become the cold junctions, and the sum of the voltages generated by the thermocouples is proportional to the flow of heat, and thus to the incident optical power. | 2013-09-26 |
20130250998 | Heat Sensor Correction - A heat sensor has the ability to correct for errors introduced during temperature changes of the hot junction of the thermopile for the heat sensor. For example, the effect of temperature changes at the hot junction of the heat sensor relative to the cold junction is mathematically modeled such that the effect on the temperature determination can be corrected given certain information relating to the thermopile, its electrical output, and the temperature history and current temperature of the cold junction. By accounting for these factors, a processing device can modify the temperature determination output for the heat sensor while correcting for error introduced by temperature changes at the hot junction as determined by the mathematical model. | 2013-09-26 |
20130250999 | THERMOCOUPLE WITH INTEGRITY MONITORING - According to one embodiment of the present disclosure a thermocouple is provided that includes an electrical component, such as a resistor, at or in close proximity to a junction where the temperature is expected to be measured. By monitoring analog voltage measurements, the system determines, for example, whether the measured temperature actually represents a temperature reading at the junction or whether the thermocouple has been compromised due to one or more of a variety of health issues, such as, a short circuit in the thermocouple, thereby causing a false junction. | 2013-09-26 |
20130251000 | Synchronous Frequency Hopping Spread Spectrum Communications - Methods, systems and metering devices are provided for performing synchronous communication in a frequency hopping communication system without the use of expensive clock circuitry and/or significant amounts of data traffic on the communication system. | 2013-09-26 |
20130251001 | Interference Signal Avoiding Device of a Frequency Hopping Spread System and Method Thereof - An interference signal avoiding device of a frequency hopping spread system and a method thereof are disclosed. A method of transmitting/receiving an interference signal avoiding signal according to the present invention includes: determining a frequency hopping channel set and a parameter of an interference signal detector in consideration of characteristics of an interference signal; detecting whether there is an interference signal with respect to frequency hopping candidate channels that are to be used for the next frequency hopping by using the determined interference signal detector; transmitting a signal through a channel that is determined by the interference signal detector that there is no interference signal among the frequency hopping candidate channels; and searching a channel through which the signal is transmitted from the frequency hopping candidate channels in order to receive the transmitted signal. | 2013-09-26 |
20130251002 | TERMINAL APPARATUS AND COMMUNICATION METHOD - In order to reduce interference between cells through hopping and use frequencies in a good propagation situation, a scheduler section carries out scheduling for determining to which user data should be sent using CQI from each communication terminal apparatus, selects a user signal to be sent in the next frame and determines in which subcarrier block the data should be sent. Au MCS decision section selects a modulation scheme and coding method from the CQI of the selected user signal. A subcarrier block selection section selects a subcarrier block instructed by the scheduler section | 2013-09-26 |
20130251003 | SYSTEMS AND METHODS FOR INDOOR POSITIONING - A method for wireless positioning includes: receiving by a plurality of controllers using wideband receivers a wideband positioning frame from one or more devices and transmitting using narrow band transmitters acknowledgement frames including timing and control data for use by the one or more devices to establish timing for transmission of the positioning frame; and transmitting using a wideband transmitter by at least one of the devices the positioning frame to the plurality of controllers and receiving using a narrow band receiver the acknowledgement frame from one or more of the plurality of controllers, extracting timing and control information from the acknowledgement frame, and adjusting a timing and synchronization of the wideband transmitter using the timing and control information. | 2013-09-26 |
20130251004 | TRANSMISSION DEVICE, RECEPTION DEVICE, AND RADIO COMMUNICATION METHOD - A transmitting apparatus includes an OFDM modulator that generates a first modulation symbol by modulating a first information signal using a first modulation scheme, a signal point of the first modulated information signal being at a first position in an in-phase quadrature-phase plane. A second modulation symbol by modulating a second information signal using the first modulation scheme, and by changing a second position at which a signal point of the modulated second information signal is arranged to a third position in the in-phase quadrature-phase plane, and an OFDM modulation signal including the first modulation symbol and the second modulation symbol, wherein the OFDM modulation signal comprises a plurality of subcarriers. | 2013-09-26 |
20130251005 | METHOD FOR ACQUIRING SATELLITE SIGNAL AND SATELLITE SIGNAL RECEIVING DEVICE - Methods and apparatuses for acquiring a satellite signal includes generating a differential code using first, second and third segments of a satellite signal received from a positioning satellite, obtaining a correlation value by performing a correlation using the differential code and a replica of the spreading code, and acquiring the satellite signal using the correlation value. The differential code is generated by performing a differential operation on a spreading code from the positioning satellite. | 2013-09-26 |
20130251006 | DATA PACKET FLOW CONTROL ACROSS AN ASYNCHRONOUS CLOCK DOMAIN BOUNDARY - A system-on-chip integrated circuit | 2013-09-26 |
20130251007 | Phase Alignment Between Phase-Skewed Clock Domains - In order to compensate for phase offset between different sets of circuitry having different synchronous clock domains, transmit (TX) circuitry of one domain is configured to transmit a pattern signal (e.g., a pseudo random bit sequence) to receive (RX) circuitry of the other domain. The RX circuitry cycles through a number of different phase-shifted RX clock signals to determine which selected clock signals result in valid RX pattern signals. The RX circuitry is then able to select one of the phase-shifted clock signals for use in normal processing of an RX data signal received from the TX circuitry. | 2013-09-26 |
20130251008 | METHOD FOR DIGITAL WIRELESS COMMUNICATIONS - In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is possible to suppress deterioration of the accuracy in estimating the reference phase and amount of frequency offset by pilot symbols and improve the bit error rate characteristic in the signal to noise ratio in quasi-coherent detection with symbols whose symbol synchronization is not completely established. | 2013-09-26 |
20130251009 | TECHNIQUES TO MANAGE CHANNEL PREDICTION - A system, apparatus, method and article to manage channel prediction for a wireless communication system are described. The apparatus may include a media access control processor to perform channel prediction, and a transceiver to communicate information using the channel prediction. Other embodiments are described and claimed. | 2013-09-26 |
20130251010 | METHOD AND APPARATUS FOR COMPENSATING FOR PHASE SHIFT IN A COMMUNICATION DEVICE - A method and apparatus for compensating is described, in which a tuning network is electrically coupled to an antenna and to a phase shift network. A controller communicatively linked to the tuning network and to the phase shift network receives data regarding the state of a communication system. The controller changes the impedance of the tuning network, and changes the phase shift of the phase shift network based on the received data. The received data may include information regarding the channel, band, or sub-band on which a communication device is communicating; information regarding on the application state of the device; and the modem state of the device. | 2013-09-26 |
20130251011 | Data Processing - Measures for use in processing data in a user equipment radio receiver, the radio receiver comprising a modem adapted for wireless communication with a telecommunications network. Data associated with wireless communication conducted via the modem is received, the received data being defined in a first domain. The received data is transformed from the first domain into a second domain using a transform function to generate transformed data in the second domain. The transformed data is compressed in the second domain to produce compressed data in the second domain. The compressed data is stored in memory in the user equipment radio receiver. | 2013-09-26 |
20130251012 | TRANSMISSION CHARACTERISTIC ADJUSTMENT DEVICE, TRANSMISSION DEVICE AND METHOD FOR ADJUSTING TRANSMISSION CHARACTERISTIC - A transmission characteristic adjustment device includes: a setting process portion that sets a setting value concerning each transmission characteristic of a plurality of electric signals to at least one of a sending device that sends the plurality of electric signals and a receiving device that receives the plurality of electric signals; a generation process portion that acquires each error rate calculated based on identification information included in each of the plurality of electric signals whenever the setting value is changed, and generates a table on which a plurality of sets of the setting value and the error rate are recorded; and an adjustment process portion that adjusts the setting value based on the table. | 2013-09-26 |
20130251013 | DYNAMIC RECEIVER SWITCHING - Dynamic receiver switching is implemented by a receiving device that selects a first receiver having operating characteristics associated with a first optimal operating region to decode one or more first transmissions. The receiving device then selects a second receiver to decode subsequent transmissions. The second receiver has operating characteristics and an optimal operating region that are different from those of the receiver. | 2013-09-26 |
20130251014 | METHOD FOR IDENTIFYING AND DETECTING A RADIO SIGNAL FOR A COGNITIVE COMMUNICATION SYSTEM - A method of identifying an RF signal for a cognitive radio system. The signal is identified with a digital watermarking performed downstream from the digital modulation of the symbols to be transmitted. A method of detecting an RF signal watermarked is also disclosed. The identification method includes demodulating the received RF signal as a baseband, converting it digitally, and correlating the digital signal obtained with a predetermined digital signature. The correlation values are averaged using a recursive filter and the maximum value of the average values output from the filter is compared to a threshold to decide whether the RF signal is present. | 2013-09-26 |
20130251015 | OPTIMIZATION METHOD OF OPTIMALLY SETTING EMPHASIS AND OPTIMIZATION DEVICE FOR OPTIMALLY SETTING EMPHASIS - In an emphasis optimization device, a calculating unit calculates an inverse characteristic of an amplitude characteristic based on the amplitude characteristic of a transmission path, and an inverse Fourier transform unit performs an inverse Fourier transform on the inverse characteristic to obtain an impulse response. An extracting unit extracts, from the obtained impulse response, an impulse response corresponding to the number of taps necessary for emphasis to be added to a digital signal to be transmitted on the transmission path. An emphasis amount calculating unit converts the extracted impulse response into a value of the emphasis to calculate an emphasis amount. | 2013-09-26 |
20130251016 | DUAL SQUELCH DETECTORS AND METHODS FOR LOW POWER STATES - Apparatus having corresponding methods comprise: a first squelch circuit configured to detect possible squelch signals in a communication signal; and a second squelch circuit configured to i) operate in a low-power state responsive to the first squelch circuit detecting none of the possible squelch signals in the communication signal, and ii) operate in a high-power state responsive to the first squelch circuit detecting one of the possible squelch signals in the communication signal. | 2013-09-26 |
20130251017 | PROXIMITY CONTACTLESS COMMUNICATION APPARATUS CAPABLE OF SELECTING APPROPRIATE ENCODING METHOD ACCORDING TO BANDWIDTH BETWEEN ANTENNAS - A comparator circuit compares a test pattern generated by a test pattern generator circuit, with a test pattern transmitted to a memory card and returned from the memory card. A control circuit determines a bandwidth corresponding to frequency components correctly transmitted between a host apparatus and the memory card, based on the returned test pattern, and selects an encoding method requiring a maximum available bandwidth. The control circuit generates a notification message indicating the selected encoding method, and encodes the notification message using the selected encoding method, and transmit the encoded notification message to the memory card. The control circuit establishes communication between the host apparatus and the memory card, when receiving a response message including an acknowledgement to the notification message, from the memory card. | 2013-09-26 |
20130251018 | TELECOMMUNICATION SIGNALING USING NONLINEAR FUNCTIONS - One exemplary embodiment can describe a method for communicating. The method for communicating can include a step for identifying characteristics of a communications channel, a step for identifying a set of nonlinear functions used to generate waveforms, a step for assigning a unique numeric code to each waveform, a step for transmitting a numeric sequence as a series of waveforms, a step for receiving the series of waveforms, and a step for decoding the series of waveforms. | 2013-09-26 |
20130251019 | Sparse equalizer system - Sparse equalizer system. One or more multiple tapped delay lines (e.g., equalizers and/or pre-equalizers) are implemented to service one or more respective channels with which a communication device operates to support communications with at least one other communication device. Adaptive selection of which subsets of taps of the one or more multiple tapped delay lines is made to control those particular taps of which contribute to one or more subsequent slicer inputs. Those taps which are not currently operating to contribute to the slicer input may undergo processing, updating, etc. in parallel with or simultaneously with the processing of a signal to generate the outputs to be provided to the one or more subsequent slicers. | 2013-09-26 |
20130251020 | Methods and Systems for Adaptive Receiver Equalization - Methods and systems adaptively equalizing an analog information signal, the method including sampling the analog information signal to provide analog samples including post-transition samples and steady-state samples, and equalizing the analog samples to produce equalized analog samples. The equalizing includes determining a difference between an average post-transition amplitude associated with at least one of the post-transition samples and an average steady-state amplitude associated with at least one of the steady-state samples, and adjusting an equalization coefficient to adjust the difference between the average post-transition amplitude and the average steady-state amplitude. | 2013-09-26 |
20130251021 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication apparatus of the present invention comprises a plurality of branches, a tap output combining section, an adaptive blind processing section and a diversity combining section. Each of the plurality of branches comprises a tap processing section generates a tap output signal and a received signal vector on a basis of a received signal and a tap coefficient in a space diversity method. The tap output combining section calculates by linking the tap output signal as a tap output combination signal. The adaptive blind processing section generates the tap coefficient by an adaptive blind processing on a basis of the tap output combination signal and the received signal vector. The diversity combining section performs a diversity combination of the tap output signals. The adaptive blind processing section uses an evaluation condition so that the tap output combination signal be minimal. | 2013-09-26 |
20130251022 | SIGNALING OF END OF SLICES - A slice granularity representing a hierarchical level for slice boundary alignment in a picture ( | 2013-09-26 |
20130251023 | Method and apparatus of Bayer pattern direct video compression - Applying a mechanism of image signal processing and color-space-conversion to convert the captured Green components to be Y, luminance components for only those pixels having raw Green data without interpolation, and to convert the Blue components to be U, chrominance components for only those pixels having raw Blue data, and Red components to be V, chrominance components for only those pixels having raw Red data. These converted YUV components are input to a predetermined video compression codec for reducing the intra- and inter-frame redundant information. | 2013-09-26 |
20130251024 | METHOD AND DEVICE TO IDENTIFY MOTION VECTOR CANDIDATES USING A SCALED MOTION SEARCH - A scaled motion search section can be used in a video processing device that processes a video input signal that includes a plurality of pictures. The scaled motion search section includes a downscaling module that downscales the plurality of pictures to generate a plurality of downscaled pictures, wherein the downscaling module includes a horizontal downscaling filter and a vertical downscaling filter, and wherein the vertical downscaling filter generates downscaled pixels for a macroblock pair using only pixels from the macroblock pair. A transfer function that models the scaled motion vectors is determined and used to identify a final set of motion vector candidates used in a larger scale motion search. | 2013-09-26 |
20130251025 | MEMORY BANDWIDTH REDUCTION DURING VIDEO CAPTURE - Certain aspects of the present disclosure are directed to a video processing module, including: a video capture module configured to capture a screen display; a compression module configured to compress the screen display to construct compressed data representing the screen display; and a memory module configured to store the compressed data. Certain aspects are directed to a computer-implementable method, including: reading compressed video data having a plurality of data units and representing a screen display out of a data storage, the data units including a line tag, an encoding tag, and a pixel value data unit; detecting a line tag from the compressed video data and extracting a line number from the line tag; receiving an expected line number from a counter; comparing the line number with the expected line number and determining a comparison result; and determining whether a fault exists based on the result. | 2013-09-26 |
20130251026 | CODED BLOCK FLAG INFERENCE IN VIDEO CODING - A video decoder determines whether a first condition is satisfied. The first condition is satisfied when any sibling residual quad tree (RQT) node of a current RQT node is associated with a significant luma coefficient block. In addition, the video decoder determines whether a second condition is satisfied. The second condition is satisfied when a chroma transform block of a parent RQT node of the current RQT node is significant and is split along with a luma transform block of the parent RQT node. In response to determining that neither the first nor the second condition is satisfied, the video decoder determines that a luma coded block flag (CBF) for the current RQT node is omitted from the bitstream. | 2013-09-26 |
20130251027 | Complexity Scalable Multilayer Video Coding - A multi-layer video system has a first layer encoder that encodes a first layer of video information, at least one second layer encoder that encodes at least one second layer of video information, and an encoder side reference processing unit (RPU) that estimates one or more of an optimal filter or an optimal process that applies on a reference picture that is reconstructed from the first video information layer, and processes a current picture of the second video information layer, based on a correlation between the first layer reconstructed reference picture. The correlation relates to a complexity characteristic that scaleably corresponds to the first video information layer reconstructed reference picture and the second video information layer current picture. A scalable video bitstream is outputted, which may be decoded by a compatible decoder. A decoder side RPU and the encoder side RPU function as an RPU pair. | 2013-09-26 |
20130251028 | VIDEO ENCODING AND DECODING WITH CHANNEL PREDICTION AND ERROR CORRECTION CAPABILITY - Data encoding and/or decoding techniques are applied in a codec system. Pixel parameters and error thresholds can be determined. A prediction mode can be determined. Further, a prediction mode can predict values of an encoded and/or decoded media item. In one aspect, compositions of media items can determine prediction modes. | 2013-09-26 |
20130251029 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - Provided is an image processing device including a decoding section that decodes an encoded stream to generate an image, a line determining section that determines whether to apply a deblocking filter to each of lines perpendicular to a boundary in neighboring blocks neighboring across the boundary in the image generated by the decoding section, and a filtering section that applies the deblocking filter to each line to which the line determining section determines to apply the deblocking filter. | 2013-09-26 |
20130251030 | INTER LAYER TEXTURE PREDICTION FOR VIDEO CODING - An apparatus for coding video information according to certain aspects is disclosed. Multi-layer video steams including a base layer and an enhancement layer can be coded. Predictors generated for the base layer and the enhancement layer can be combined to form a final predictor of the enhancement layer. Each predictor can be weighted such that those predictors which are more likely to produce high quality results can be factored more heavily in the final predictor. The conditions upon which the respective weights for enhancement layer predictors and base layer predictors are determined may be implicitly derived from the predictors or characteristics thereof. Alternatively, data may be generated explicating indicating the weights or providing information from which the weights can be determined. | 2013-09-26 |
20130251031 | METHOD FOR BIT RATE CONTROL WITHIN A SCALABLE VIDEO CODING SYSTEM AND SYSTEM THEREFOR - A method for bit rate control within a scalable video coding system is described. The method comprises, for an access unit within a scalable encoded video bit stream, determining a bit budget for at least one spatial dependence layer within the scalable encoded video bit stream, and calculating at least one quantization parameter value for encoding the at least one spatial dependence layer based at least partly on the determined bit budget for the at least one spatial dependence layer. | 2013-09-26 |
20130251032 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - An image processing device including an acquiring section configured to acquire quantization matrix parameters from an encoded stream in which the quantization matrix parameters defining a quantization matrix are set within a parameter set which is different from a sequence parameter set and a picture parameter set, a setting section configured to set, based on the quantization matrix parameters acquired by the acquiring section, a quantization matrix which is used when inversely quantizing data decoded from the encoded stream, and an inverse quantization section configured to inversely quantize the data decoded from the encoded stream using the quantization matrix set by the setting section. | 2013-09-26 |
20130251033 | METHOD OF COMPRESSING VIDEO FRAME USING DUAL OBJECT EXTRACTION AND OBJECT TRAJECTORY INFORMATION IN VIDEO ENCODING AND DECODING PROCESS - Disclosed is a method of compressing video frame using dual object extraction and object trajectory information in a video encoding and decoding process, including: segmenting a background and a object from a reference frame in video to extract the object, extracting and encoding motion information of the object based on the object, determining whether a frame is a reference frame based on encoded video in a decoding process, if it is determined that the frame is the reference frame, generating background information of a prediction frame based on the reference frame, and generating the prediction frame by extracting an object of the reference frame and referring to header information to reflect motion information of the object. | 2013-09-26 |
20130251034 | METHODS AND APPARATUS FOR ILLUMINATION AND COLOR COMPENSATION FOR MULTI-VIEW VIDEO CODING - There are provided a method and apparatus for illumination and color compensation for multi-view video coding. A video encoder includes an encoder for encoding a picture by enabling color compensation of at least one color component in a prediction of the picture based upon a correlation factor relating to color data between the picture and another picture. The picture and the other picture have different view points and both corresponding to multi-view content for a same or similar scene. | 2013-09-26 |
20130251035 | METHOD AND APPARATUS FOR ENCODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION, AND METHOD AND APPARATUS FOR DECODING VIDEO BY MOTION PREDICTION USING ARBITRARY PARTITION - An encoding method including: receiving and parsing a bitstream of an encoded image, determining coding units having a hierarchical structure being data units in which the encoded image is decoded, and sub-units for predicting the coding units, by using information that indicates division shapes of the coding units and information about prediction units of the coding units, parsed from the received bitstream, wherein the sub-units comprise partitions obtained by splitting at least one of a height and a width of the coding units according to at least one of a symmetric ratio and an asymmetric ratio, and reconstructing the image by performing decoding including motion compensation using the partitions for the coding units, using the encoding information parsed from received bitstream, wherein the coding units having the hierarchical structure comprise coding units of coded depths split hierarchically according to the coded depths and independently from neighboring coding units. | 2013-09-26 |
20130251036 | INTRA PREDICTION METHOD AND APPARATUS - An intra prediction method according to the present invention comprises the following steps: performing a directional prediction using at least one of a neighboring pixel of a current block and a left upper corner pixel positioned at a left upper corner of the current block so as to obtain a first prediction value for the current block; obtaining a second prediction value for the current block using the reference sample positioned in the current block; and weighted summing the first prediction value and the second prediction value using a weighting matrix so as to obtain a final prediction value for the current block. According to the present invention, image encoding/decoding efficiency may be improved. | 2013-09-26 |
20130251037 | Method and System for Intra-Mode Selection Without Using Reconstructed Data - A method and system are provided in to perform video encoding operations. An encoder module encodes a current block of pixels by selecting an intra-mode compression or an inter-mode compression based on a type of frame being compressed. The intra-mode compression includes a direction estimation operation based on values of previously reconstructed pixels. | 2013-09-26 |
20130251038 | IMAGE DECODING DEVICE - In expansion and reduction of the size of a macroblock in a moving image encoding, a compression ratio falls because an information amount for describing size information of the macroblock increases. An image decoding device includes a CU dividing unit and a CU-size storing unit. The CU-size storing unit has stored therein size information of an encoded CU in an encoding target picture to be stored and size information of all CUs in preceding and following pictures used for prediction. The CU dividing unit predicts a CU size in an encoding target position using the CU size information stored in the CU-size storing unit and determines a CU size of a final encoding target CU. | 2013-09-26 |
20130251039 | IMAGE CODING METHOD AND IMAGE DECODING METHOD - Provided is an image coding method for performing intra prediction achieving higher coding efficiency. The method for coding image data on a block-by-block basis includes; generating a predicted block by predicting a current block; computing a difference between the current block and the predicted block; coding the difference computed in the computing; decoding the difference coded in the coding; and adding the difference decoded in the decoding to the predicted block to generate a decoded block, wherein the generating includes: detecting an edge in a previously decoded block corresponding to a block adjacent to the current block; and extrapolating or interpolating previously decoded image data corresponding to a pixel included in the block adjacent to the current block, along a direction of the edge detected in the detecting to generate the predicted block. | 2013-09-26 |
20130251040 | Motion Estimation Compatible with Multiple Standards - A motion estimation engine may be implemented to support multiple video encoding standards. The motion estimation engine may be designed to support two macroblock partitioning modes: one for frame type video signals and the other for mixed frame-field type video signals. Additionally, the motion estimation engine provides the mixing unidirectional option (forward/backward) and the mixing bidirectional option. Furthermore, the motion estimation engine may use a unified 4-tap interpolation filter for fractional macroblock search during motion estimation. | 2013-09-26 |
20130251041 | DERIVING CONTEXT FOR LAST POSITION CODING FOR VIDEO CODING - In one example, a device includes a video coder configured to determine a context for entropy coding a bin of a value indicative of a last significant coefficient of a block of video data using a function of an index of the bin, and code the bin using the determined context. The video coder may encode or decode the bin using context-adaptive binary arithmetic coding (CABAC). The function may also depend on a size of the block. In this manner, a table indicating context indexes for the contexts need not be stored by the device. | 2013-09-26 |
20130251042 | Block Error Compensating Apparatus of Image Frame and Method Thereof - An apparatus and method are provided for compensating a block error in an image frame. This may include a video codec decoder for decoding an inputted image frame, and outputting a decoded image frame. An error concealment block may detect an error-generated block in the decoded image frame and compensate the detected error block through a median filter, and output the compensated image frame. | 2013-09-26 |
20130251043 | HIGH-SPEED MOTION ESTIMATION METHOD - A high-speed motion estimation method for estimating a motion of a picture at high speed in a high-speed motion estimation apparatus including an integer-times motion estimation unit and a decimal-times motion estimation unit. The integer-times motion estimation unit (1) receives pixel data of a picture for estimation of motion from an external frame memory, (2) stores pixel data of a current region in a current macroblock storage where multiple inputs/outputs are made, (3) stores pixel data of an estimation region in an estimation region macroblock storage of a sharable multiple input/output bank type, and (4) predicts an integer-times motion vector using both stored pixel data. The decimal-times motion estimation unit reads the pixel data of the estimation region from the estimation region macroblock storage which is sharable, and predicts a decimal-times motion vector using the read pixel data of the estimation region and the integer-times motion vector. | 2013-09-26 |
20130251044 | METHOD AND DEVICE FOR DETERMINING REFERENCE UNIT - An inter prediction method according to the present invention comprises the steps of: selecting candidate units from among reconstructed neighbor units; creating a candidate unit set with respect to units to be decoded, using the selected candidate units; determining a reference unit from among the candidate units which constitute the created candidate unit set; and performing inter prediction on the units to be decoded, using the determined reference unit. According to the present invention, image encoding/decoding efficiency can be improved. | 2013-09-26 |
20130251045 | METHOD AND DEVICE FOR DETERMINING A MOTION VECTOR FOR A CURRENT BLOCK OF A CURRENT VIDEO FRAME - A method for determining a motion vector for a current video frame block comprises determining the motion vector using full search. Then, a number of further motion vectors is counted which is the number of motion vectors of neighbouring blocks which are similar to each other and the motion vector. Then it is ascertained that the number meets or exceeds a threshold and that the motion vector is not similar to at least one of the counted further motion vectors. A search region is determined using counted motion vectors and searched for a local best match of the current block. The motion vector is changed towards referencing the local best match. The search region only comprises candidates referenced by motion vector candidates similar to a yet further motion vector pointing to a centre of the further search region. Then, the motion vector resembles the motion presumed by the HVS. | 2013-09-26 |
20130251046 | IMAGE CODING METHOD, AND IMAGE DECODING METHOD - An image coding method is a method of coding an image on a per-region basis. The method includes: calculating offset information to be used for applying offset to the current region; determining whether or not the offset information is the same between the current region and a neighboring region of the current region; applying offset using the offset information and a result obtained in the determining, by adding an offset value to a reconstructed signal obtained by coding a pixel signal of the current region and decoding the coded pixel signal; coding the offset information; and storing, into a memory, an offset signal obtained by applying the offset, so that the offset signal is used for coding of a subsequent region. | 2013-09-26 |
20130251047 | Chroma Information Signaling for Video Streams - Embodiments of systems and methods for signaling chroma information for a picture in a compressed video stream are provided. One system embodiment, among others, comprises a memory with logic, and a processor configured with the logic to provide a compressed video stream that includes a picture having chroma samples and luma samples, and provide in the compressed video stream a flag for signaling information corresponding to the location of the chroma samples in relation to the luma samples in the picture, wherein a first defined flag value indicates default locations of the chroma samples in relation to the luma samples in the picture, wherein a second defined flag value indicates a presence in the compressed video stream of auxiliary chroma information corresponding to relative locations of the chroma samples to the luma samples in the picture, and wherein the number of chroma samples in the picture implied by the first defined flag value is equal to the number of chroma samples in the picture implied by the second defined flag value. Other embodiments for signaling chroma information for a picture in a compressed video stream are included herein. | 2013-09-26 |
20130251048 | Methods of Performing Spatial Error Concealment For Digital Video - Error concealment is used to hide the effects of errors detected within digital video information. A novel spatial error concealment technique is disclosed for use when the error concealment mode decision determines that spatial error concealment should be used for reconstruction. The novel spatial error concealment technique divides a corrupt macroblock into multiple regions, such as, a corner region, a row adjacent to the corner region, a column adjacent to the corner region, and a remainder main region. Those regions are then reconstructed and information from earlier reconstructed regions may be used in later reconstructed regions. Finally, a macroblock refreshment technique is disclosed for preventing error propagation from harming non-corrupt inter-blocks. Specifically, an inter-macroblock may be ‘refreshed’ using spatial error concealment if there has been significant error caused damage that may cause the inter-block to propagate the errors. | 2013-09-26 |
20130251049 | METHOD AND SYSTEM FOR NOISE REDUCTION WITH A MOTION COMPENSATED TEMPORAL FILTER - Described herein is a method and system for the reduction of noise in a video sequence. When motion is present in the video sequence, this system and method identifies motion data. With the motion data, a Motion Compensated Temporal Filter (MCTF) can apply motion compensation prior to filtering in the time domain. Temporal filtering can be performed to reduce visible noise and other detrimental artifacts. | 2013-09-26 |
20130251050 | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD - An image processing device including a decoding section configured to decode an image from an encoded stream, a horizontal filtering section configured to apply a deblocking filter to a vertical block boundary within an image to be decoded by the decoding section, a vertical filtering section configured to apply a deblocking filter to a horizontal block boundary within an image to be decoded by the decoding section, and a control section configured to cause the horizontal filtering section to filter in parallel a plurality of vertical block boundaries included in a processing unit containing a plurality of coding units and cause the vertical filtering section to filter in parallel a plurality of horizontal block boundaries included in the processing unit. | 2013-09-26 |
20130251051 | IMAGE FILTER DEVICE, DECODING DEVICE, ENCODING DEVICE, AND DATA STRUCTURE - A loop filter ( | 2013-09-26 |
20130251052 | CXP TO QSFP+ MODULE FORM FACTOR ADAPTER - Techniques are provided for an adapter device configured to enable communications between a quad small form-factor pluggable (QSFP) transceiver unit and a CXP host port. The adapter device comprises a first connector unit, a second connector unit, a microcontroller unit and a plurality of reception equalizer units. Data signals are sent by the transceiver unit to a first equalizer unit via the first connector unit. The first equalizer unit adjusts the data signals and sends the data signals to the host port via the second connector unit. Likewise, data signals are sent by the host port to a second equalizer unit via the second connector unit. The second equalizer unit adjusts the data signals and sends the data signals to the transceiver unit via the first connector unit. | 2013-09-26 |
20130251053 | REDUCING THE IMPACT OF SUBCARRIER QUALITY EVALUATION - In one embodiment, a device may select, based on an optimal tone map, a particular subcarrier for use when transmitting a data frame, the data frame to serve as a tone map request (TMREQ). The device may then populate one or more unused quality subcarriers of the TMREQ data frame other than the particular subcarrier with a well-known bit sequence, and transmits the TMREQ data frame to a receiving device to cause the receiving device to evaluate transmission quality of the one or more unused quality subcarriers based on the well-known bit sequence. | 2013-09-26 |
20130251054 | DYNAMIC SUBCARRIER UTILIZATION AND INTELLIGENT TRANSMISSION SCHEDULING - In one embodiment, a transmitting device monitors transmission activity of each of a plurality of subcarriers in a communication network, and determines a set of unutilized subcarriers of the plurality of subcarriers. As such, the transmitting device may then transmit a data frame on one or more of the unutilized subcarriers to a receiving device while transmission activity is present on one or more utilized subcarriers within the network. In another embodiment, the transmitting device may also determine timing information associated with the transmission activity, and may correspondingly schedule the transmitting to optimize network performance based on the timing information. | 2013-09-26 |
20130251055 | APPARATUS AND METHOD FOR CONTROLLING DISTORTION SIGNAL AND SYSTEM BY USING THE SAME - Disclosed are a signal distortion component adjusting apparatus and method capable of adjusting error vector magnitude of subcarriers of a predetermined position by adjusting a signal distortion component occurring while decreasing a peak to average power ratio (PAPR) in a communication system of an orthogonal frequency division multiplexing (OFDM) technology or an orthogonal frequency division multiple access (OFDMA) scheme, and a system using the same. The present invention includes a signal distortion component adjusting unit to add an additional signal distortion component Pe((n+N/2) % N) to a signal distortion component e(n) that is obtained by subtracting a threshold Th value, set to decrease peak power, from an absolute value of a time domain signal x(n) of an input signal, and to thereby adjust the signal distortion component. The present invention may transmit a highly reliable signal by adjusting error vector magnitude of subcarrier of a frequency domain. | 2013-09-26 |
20130251056 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A modulator generates a subcarrier modulation signal from an input signal, a parallel-serial converter generates a subcarrier modulation signal from the modulation signal. An IFFT calculator performs reverse Fast Fourier Transform on the subcarrier modulation signal, and a separator separates a calculation result into real part data and imaginary part data. A real part calculator performs a calculation on each element of the real part data to generate real part post-distribution data. An imaginary part calculator performs the data processing on the imaginary part data in the same manner, and generates imaginary part post-distribution data. A combiner combines the real part post-distribution data and the imaginary part post-distribution data to generate a baseband signal, and a transmitter which generates a transmission signal from the baseband signal to transmit generated transmission signal. | 2013-09-26 |
20130251057 | SYSTEM AND METHODS FOR COMPENSATION OF I/Q IMBALANCE IN BEAMFORMING OFDM SYSTEMS - Disclosed are an system and method for compensation of I/Q imbalance in a beamforming OFDM system. The system comprises: a TX beamformer configured at a transmitter end of the beamforming OFDM system; a noise whitener configured at a receiver end of the beamforming OFDM system; and a RX MMSE configured at the receiver end of the beamforming OFDM system. At least one of the TX beamformer, the noise whitener and the RX MMSE receiver, or any combination thereof are capable of jointly processing a carrier and its image subcarrier to compensate the I/Q imbalance in the beamforming system. | 2013-09-26 |
20130251058 | MULTI-ANTENNA CODEBOOK SELECTION MODULATION METHOD FOR SOLVING WEAK SCATTERING - A multi-antenna codebook selection modulation method for solving weak scattering is provided by the present invention. The method obtains higher diversity gain from a combination of multi-antenna codebook pre-coding and a rotation modulation solution by designing a new codebook selection rule. The present invention employs a design solution of designing a higher-order modulation diversity and space interleaver to obtain the higher diversity gain. In addition, the number of transmission antennas and the number of rotation modulation dimension can be set arbitrarily. However, the present invention takes the number Nt of transmission antennas to be equal to the number D of rotation modulation dimension in order to obtain higher diversity gain. In this way, the method evenly disperses signals of each dimension after D-dimensional rotation to each antenna through space interleaving technique, so that the signals of each dimension suffer different fading, thus enabling space diversity gain. With the present invention, the data of a transmitting end are pre-coded by using a channel value estimated for an ideal channel. | 2013-09-26 |
20130251059 | BASE STATION AND MIMO-OFDM COMMUNICATION METHOD THEREOF - When performing communication with a mobile station using MIMO-OFDM communication, a base station uses multiple input multiple output (MIMO) communication, which is multiple data stream transmission, to transmit data and pilot signals in a case where the communication environment of the mobile station is good, or uses single input multiple output (SIMO) communication, which is single data stream transmission, in a case where the communication environment of the mobile station is poor. When performing that SIMO communication, the base station performs control so that pilot signals from a specified cell that are used in channel estimation in single data stream transmission and pilot signals from adjacent cells that are used in channel estimation in single data stream transmission do not overlap in the frequency direction and/or time axis direction. | 2013-09-26 |
20130251060 | MULTILEVEL AMPLITUDE MODULATION DEVICE, MULTILEVEL AMPLITUDE DEMODULATION DEVICE, TRANSMISSION SYSTEM INCLUDING THESE, MULTILEVEL AMPLITUDE MODULATION METHOD, AND MULTILEVEL AMPLITUDE DEMODULATION METHOD - A multilevel amplitude modulation device for generating, from digital data, a multilevel amplitude modulation signal having four or more signal levels and outputting the generated signal, including: an average level calculator that selects one of a plurality of preliminarily prepared different candidates for a code word building method such that average level of a symbol array, obtained by adding a symbol for a code word of digital data to be transmitted to one or more already outputted symbols included in a multilevel amplitude modulation signal already outputted, is most approximate to voltage center of the four or more signal levels, and outputs a selection signal indicating the selected method; a signal converter that forms a codeword of the digital data in accordance with the method indicated by the selection signal; and a multilevel modulator that generates a multilevel amplitude modulation signal using the codeword and outputs the generated signal. | 2013-09-26 |
20130251061 | METHOD, APPARATUS, AND SYSTEM FOR DIVERSITY TRANSMISSION AND RECEPTION - A diversity transmission method in the field of wireless communications technologies includes: classifying services to be transmitted, where the classifications include a high-priority service and a low-priority service; transporting the high-priority service to a first channel and a second channel at the same time to transmit the high-priority service in a diversity protection way, and transporting the low-priority service to the first channel or the second channel to transmit the low-priority service in a non-diversity protection way. The embodiments of the present invention further provides a corresponding method, apparatus and system for diversity reception, and an apparatus and a system for diversity transmission. In the embodiments of the present invention, it is implemented that a spectrum utilization rate is effectively improved and the reliability of diversity transmission of the high-priority service is ensured. | 2013-09-26 |
20130251062 | Device for Providing a Differential Output Signal and Method for Providing a Differential Output Signal - A device, which provides a differential output signal having a first output signal component and a second output signal component based on a plurality of input signals, includes a pair of signal sources and a controller. The pair of signal sources includes a first activatable signal source for providing the first output signal component and a second activatable signal source for providing the second output signal component. The controller is operably coupled to the pair of signal sources and is configured to activate either the first signal source or the second signal source of the pair of signal sources depending on the plurality of input signals. | 2013-09-26 |
20130251063 | Concatenated coding scheme for burst noise and AWGN for multi-channel applications - Concatenated coding scheme for burst noise and AWGN for multi-channel applications. An appropriately selected and relatively powerful error correction code (ECC) or forward error correction (FEC) code is used as an inner code to cover two or more respective channels that have respectively undergone processing in accordance with an outer code. An input signal stream may undergo partitioning into a number of respective channels (e.g., sub-carriers of orthogonal frequency division multiplexing (OFDM) signaling (or different respective blocks or groups of OFDM subcarriers), different respective spreading codes of code division multiple access (CDMA) modulation, etc., or elements of any type of orthogonal signaling scheme) such that those respective channels undergo outer code processing to generate a number of coded signals, and subsequent inner code processing covers two or more of those respective coded signals. Such outer code processing may cover all of the coded signals provided by the inner code processing. | 2013-09-26 |
20130251064 | TRANSPORT STREAM GENERATING APPARATUS, TURBO PACKET DEMULTIPLEXING APPARATUS, AND METHODS THEREOF - A transport stream generating apparatus, a turbo packet demultiplexing apparatus, and methods thereof, the transport stream generating apparatus including: a Reed Solomon (RS) encoder to RS-encode turbo data, an interleaver to interleave the RS-encoded turbo data, a duplicator to add a parity insertion area to the interleaved turbo data, and a multiplexer to multiplex normal data and the turbo data processed by the duplicator to generate a transport stream. Accordingly, reception performance can be improved in an advanced vestigial sideband (AVSB) system. | 2013-09-26 |
20130251065 | MULTI-RATE FILTER AND FILTERING METHOD FOR DIGITAL PRE-DISTORTERS - A method and apparatus for modeling distortion of a non-linear device are disclosed. A pre-distorter model has a plurality of branches. Each branch receives a different output basis function signal. At least one branch includes a down-sampler, a memory structure and an up-sampler. The down-sampler down-samples the received output basis function signal received by the branch by a factor of 1/M | 2013-09-26 |
20130251066 | MULTI-BAND WIDE BAND POWER AMPLIFIER DIGITAL PREDISTORTION SYSTEM - A high performance and cost effective method of RF-digital hybrid mode power amplifier systems with high linearity and high efficiency for multi-frequency band wideband communication system applications is disclosed. The present disclosure enables a power amplifier system to be field reconfigurable and support multiple operating frequency bands on the same PA system over a very wide bandwidth. In addition, the present invention supports multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. | 2013-09-26 |
20130251067 | ASK SIGNAL GENERATOR - According to one embodiment, an ASK signal generator includes a differential oscillator, a first modulator, a second modulator, a first transmission line, a second transmission line and an impedance adjustment circuit. The differential oscillator generates first and second signals having an opposite phase, and outputs the first and second signals from first and second output terminals. The first modulator connected to the first output terminal is set in the normally off state. The second modulator connected to the second output terminal is turned on or off according to a digital signal. The first and second transmission lines connected to the first and second output terminals have a length equal to a ¼ wavelength of the oscillation frequency of the differential oscillator. The impedance adjustment circuit is operated together with the second modulator according to the digital signal. | 2013-09-26 |