39th week of 2009 patent applcation highlights part 29 |
Patent application number | Title | Published |
20090238223 | Laser Irradiation Apparatus - A laser irradiation apparatus is provided in which the occurrence of adverse effects on an object to be irradiated with a laser beam due to the difference in the polarization state between pulsed laser beams can be prevented or significantly reduced when the pulsed laser beams emitted from two laser light sources are guided to pass through the same optical path for irradiation of an object to be irradiated with the pulsed laser beams. The laser irradiation apparatus is provided with a first laser light source | 2009-09-24 |
20090238224 | Directly Modulated Laser with Isolated Modulated Gain Electrode for Improved Frequency Modulation - A DBR laser, such as a semiconductor DBR laser is disclosed having improved frequency modulation performance. The laser includes a split gain electrode and a tuning electrode. A modulating current encoding a data signal is injected into a first section of the gain electrode whereas a substantially DC bias voltage is imposed on a second section of the gain electrode positioned between the first gain electrode and the tuning electrode. The first and second gain electrodes are electrically isolated from each other and the tuning electrode by a large isolation resistance. In some embodiments, the isolation resistance is generated by forming the electrodes on a P+ layer and removing portions of the P+ layer between adjacent electrodes. Capacitors may couple to one or both of the second gain electrode and the tuning electrode. | 2009-09-24 |
20090238225 | 6K pulse repetition rate and above gas discharge laser system solid state pulse power system improvements - A method and apparatus for operating a very high repetition gas discharge laser system magnetic switch pulsed power system is disclosed, which may comprise a solid state switch, a charging power supply electrically connected to one side of the solid state switch; a charging inductor electrically connected to the other side of the solid state switch; a deque circuit electrically in parallel with the solid state switch comprising a deque switch; a peaking capacitor electrically connected to the charging inductor, a peaking capacitor charging control system operative to charge the peaking capacitor by opening the deque switch and leaving the solid state switch open and then shutting the solid state switch. The solid state switch may comprise a plurality of solid state switches electrically in parallel. | 2009-09-24 |
20090238226 | DRIVER CIRCUIT FOR SEMICONDUCTOR LASER DIODE DRIVEN IN DIFFERENTIAL MODE - A driver circuit for a semiconductor laser diode (LD) is disclosed, in which the driver circuit drives the LD in the differential mode and lowers the power consumption thereof. The driver circuit includes a differential unit to provide the modulation current to the LD, a voltage converter to provide a positive power supply to the differential unit, a detector to detect the common mode voltage of the differential outputs of the unit, and a comparing unit to control the voltage converter dynamically such that the output common mode voltage is set in a preset reference level. | 2009-09-24 |
20090238227 | Semiconductor light emitting device - A semiconductor light emitting device is made of a group III nitride semiconductor having a major growth surface defined by a nonpolar plane or a semipolar plane, and has a quantum well layer containing In in a light emitting layer. A strain compensation layer made of a group III nitride semiconductor containing Al and having a lattice constant smaller than the lattice constant of the quantum well layer in a strain-free state is interposed in the light emitting layer of a quantum well structure having the quantum well layer and a barrier layer or in an adjacent layer adjacent to the light emitting layer. | 2009-09-24 |
20090238228 | Quantum dot based semiconductor waveguide devices - Methods and devices for providing a multiwavelength laser which may be used for multicasting and other optical communications uses. The present invention provides a quantum dot based multiwavelength laser with a monolithic gain block. The Fabry-Perot gain block has both upper and lower InP cladding layers. The laser system has a middle quantum dot layer with multiple stacked layers of InAs quantum dots embedded in InGaAsP. When provided with a CW injection current, the laser system produces an output spectra with equally spaced multiple emission peaks. With an input optical data signal applied to the laser system, the laser system duplicates the data in the input signal across multiple different wavelengths. | 2009-09-24 |
20090238229 | NITRIDE SEMICONDUCTOR LASER ELEMENT AND EXTERNAL-CAVITY SEMICONDUCTOR LASER DEVICE - Disclosed are a nitride semiconductor laser element including a light emitting portion made of a nitride semiconductor, and an external-cavity semiconductor laser device using it. In the nitride semiconductor laser element, a coat film made of silicon oxynitride is formed on the light emitting portion, and the reflectance of the coat film to feedback light of laser light emitted from the light emitting portion is 0.5% or less. | 2009-09-24 |
20090238230 | SEMICONDUCTOR LASER APPARATUS - A p-type pad electrode in a red semiconductor laser device and a first terminal are connected through a wire. A p-type pad electrode in an infrared semiconductor laser device and a second terminal are connected through a wire. A p-electrode in a blue-violet semiconductor laser device and a third terminal are connected through a wire. An n-electrode in the blue-violet semiconductor laser device is electrically conducting to a mount. An n-electrode in the red semiconductor laser device and the mount are connected through a wire, while an n-electrode in the infrared semiconductor laser device and the mount is connected through a wire. The mount has a fourth terminal inside. | 2009-09-24 |
20090238231 | LD MODULE - The present invention is to provide an LD module that can detect a wavelength fluctuation with a simple configuration and can reduce its size and prices. The LD module includes a double-sided light-emitting LD element for emitting an output light and a backward light in both forward and backward directions, a reference LD element whose temperature dependence of an oscillation wavelength is different from that of the double-sided light-emitting LD element, and a PD for receiving a multiplexed wave of the backward light of the double-sided light-emitting LD element and an output light of the reference LD element and detecting a beat component generated by the multiplexing. | 2009-09-24 |
20090238232 | Method of Protecting Semiconductor Chips from Mechanical and ESD Damage During Handling - A method and apparatus are provided for protecting a semiconductor device from damage. The method may include the steps of providing an active semiconductor device on a surface of a semiconductor substrate where the active device is surrounded by an inactive semiconductor area, and providing a soft metallic guard element in the inactive semiconductor area around at least a portion of the periphery of the active device wherein the metallic guard element is connected to ground potential and not to the active device. | 2009-09-24 |
20090238233 | OPTICAL DIE STRUCTURES AND ASSOCIATED PACKAGE SUBSTRATES - Optical die structures and associated package substrates are generally described. In one example, an electronic device includes a package substrate having a package substrate core, a dielectric layer coupled with the package substrate core, and one or more input/output (I/O) optical fibers coupled with the package substrate core or coupled with the build-up dielectric layer, or combinations thereof, the one or more I/O optical fibers to guide I/O optical signals to and from the package substrate wherein the one or more I/O optical fibers allow both input and output optical signals to travel through the one or more I/O optical fibers. | 2009-09-24 |
20090238234 | METHOD FOR OPERATING A MELT-METALLURGIC FURNACE, AND FURNACE - The invention relates to a method for operating a melt-metallurgic furnace ( | 2009-09-24 |
20090238235 | METHOD AND APPARATUS FOR DEFECT DETECTION IN A COLD PLATE - Method and apparatus are provided for detecting a defect in a cold plate, configured for cooling an electronics component. The method includes: establishing a first fluid flow through the cold plate, the first fluid flow being at a first temperature; impinging a second fluid flow onto the interface surface, the second fluid flow being at a second temperature, the first temperature and the second temperature being different temperatures; obtaining an isotherm mapping of the interface surface of the cold plate while the first fluid flow passes through the cold plate and the second fluid flow impinges onto the interface surface; and using the isotherm mapping to determine whether the cold plate has a defect. In one embodiment, an infrared-transparent manifold is employed in impinging the second fluid flow onto the interface surface, and the isotherm mapping of the interface surface is obtained through the infrared-transparent manifold. | 2009-09-24 |
20090238236 | Thermal Detector - A first object of the invention is a radiation detector comprising an energy absorber ( | 2009-09-24 |
20090238237 | Sighting system and method - This invention relates to optical sighting apparatus systems, and to methods for visualization and for identifying remote target surface areas without physical contact for the purpose of measurement and/or of treatment of the remote surface. An arrangement of projected light beams indicates the position and size of the target surface in relation to a measurement detector or treatment device, so that the device is accurately directed to the target. In a preferred arrangement separate laser beams form a light distribution indication or brightness pattern at the target and the device is sighted toward the pattern on the target surface area. | 2009-09-24 |
20090238238 | Interfacing devices and systems - A system combining the output of a thermal detection and imaging device with a capture and display device, such as a cordless or portable telephone/camera, is used to manage thermal information and displays. | 2009-09-24 |
20090238239 | APPARATUS AND METHODS FOR TEMPERATURE CALIBRATION AND SENSING - Some embodiments include apparatus and methods having a first switch, a second switch, and a circuit coupled to the first and second switches. The first switch may be configured to switch between an on-state and an off-state based on a value of a first current flowing through a number of resistors and a diode coupled in series with the resistors. The second switch may be configured to switch between the on-state and the off-state based on a value of a second current on a circuit path. The second current is a function of a voltage at a node between two of the resistors and a resistance of the circuit path. The circuit may be configured to provide a temperature reading based on the number of times the first switch or the second switch switches between the on-state and the off-state during a time interval. | 2009-09-24 |
20090238240 | SINGLE-CARRIER BURST STRUCTURE FOR DECISION FEEDBACK EQUALIZATION AND TRACKING - Certain aspects of the present disclosure relate to a method for employing a special format for transmitting data blocks which allows parallel equalizations at a receiver. By applying parallel equalization operations, a clock at the receiver can operate at a fraction of the input signal's data rate, which is more practical in the case of very high data rates while power dissipation is also reduced. | 2009-09-24 |
20090238241 | Frequency hopping pattern and arrangment for sounding reference signal - A method, an apparatus, and a computer program that includes forming frequency hopping position of the sounding reference signal is based on a hopping pattern. The hopping pattern of the sounding reference signal is configured to utilize a tree assignment for a frequency allocation of the sounding reference signal and to support at least one frequency band branch per layer. The hopping pattern of the sounding reference signal is also configured to provide consecutive sounding reference signals on widely separated frequency allocations. | 2009-09-24 |
20090238242 | TRANSMITTER AND FREQUENCY HOPPING METHOD OF THE SAME - Provided are a transmitter and a frequency hopping method thereof. The transmitter includes: a channel encoder outputting a bit stream of encoded information data; a symbol mapper outputting a symbol stream obtained by constellating the bit stream; a frequency allocation and hopping part determining a frequency to be allocated to the symbol stream; and a multi-carrier modulator loading and outputting the symbol stream output by the frequency allocation and hopping part on a multi-carrier, wherein the frequency allocation and hopping part comprises a logical frequency mapping part determining a frequency capable of optimally averaging adjacent cell interference, and a physical frequency mapping part mapping the determined frequency one-to-one and determining a frequency. | 2009-09-24 |
20090238243 | RANDOM PHASE MULTIPLE ACCESS SYSTEM WITH LOCATION TRACKING - A method of determining the location of a communication tag in a random phase multiple access communication network is disclosed. A ranging request signal that is spread using a first pseudo-noise code and offset with a first random timing offset is transmitted at a first time. A ranging response signal that is spread using a second pseudo-noise code and offset with a second random timing offset is received at a second time. A propagation delay that is dependent on the first time and the second time is calculated. | 2009-09-24 |
20090238244 | METHOD FOR OPERATING A RAKE RECEIVER - A rake receiver and method for operating a rake receiver is provided including receiving a signal in a rake receiver having at least one finger, each of the at least one finger characterized by a channel phase and a channel frequency, removing a phase and a portion of the frequency component of the signal in a first block of the at least one finger, and removing a remaining frequency component of the signal in a second block of the at least one finger. | 2009-09-24 |
20090238245 | DESPREADING SPREAD SPECTRUM DATA - A method for de-spreading spread data includes receiving a data stream by multiple access communication where the received data stream is spread using a pseudo-noise (PN) code; multiplying a first portion of the received data stream including data from a first user by a first portion of a PN signal to obtain a first product; providing the first product to a first counter; multiplying a second portion of the received data stream including data from a second user by the first portion of the PN signal to obtain a second product; providing the second product to a second counter; and determining whether the first portion of the PN signal and the second portion of the PN signal produce valid sequences based at least in part on the first product and the second product. | 2009-09-24 |
20090238246 | DIVERSITY RECEIVER - A receiver, includes a plurality of antennas to receive radio signals from a plurality of transmission paths, and a plurality of sets of RAKE fingers to generate first signals. Each set of RAKE fingers is coupled to a respective one of the plurality of antennas, and a weighting factor generator generates weighting factors for weighting the first signals, wherein the weighting factor for one of the first signals is generated by using first signals generated by at least two of the plurality of sets of RAKE fingers. Further, at least two of the first signals used to generate the weighting factor are received from the same transmission path. | 2009-09-24 |
20090238247 | LOW-COST AND LOW-COMPLEXITY INNER COMMUNICATION RECEIVER FOR RECEIVE DIVERSITY - A communication receiver includes first and second antenna elements for receiving first and second signals respectively representative of first and second symbols encoded with a first or second channel coefficient and first and second delay lines for delaying the first and second signals respectively. A master rake module up-samples a pilot channel sequence at chip rate to mix it with the second delayed signals to deliver correlated delayed signals and to determine first and second channel coefficient estimates from the first delayed signals and the correlated delayed signals. A slave rake module determines first and second auxiliary composite symbols from the first and second delayed signals, a scrambling code sequence and a spreading code sequence. Lastly the first and second auxiliary composite symbols combine with the first and second channel coefficient estimates to determine first and second output signals. | 2009-09-24 |
20090238248 | SPREAD SPECTRUM WITH DOPPLER OPTIMIZATION - A method of compensating for doppler phase errors includes receiving a signal at a receiver wherein the signal is spread using a pseudo-noise code, dividing the signal into a plurality of smaller coherent units and then compensating for induced doppler phase errors by analyzing the plurality of smaller coherent units. Analysis may include producing a plurality of coherent sums by summing across the smaller coherent units and then summing non-coherently the plurality of coherent sums. Analysis may also include demodulating a symbol from the smaller coherent units. A modulation technique may be selected from a plurality of modulation techniques and then be used to encode and transmit a symbol stream. | 2009-09-24 |
20090238249 | Configurable Transceiver - A system is disclosed for operating a plurality of receiver paths and/or a plurality of transmitter paths in a single mode or multiple mode configuration. | 2009-09-24 |
20090238250 | REDUCED COMPLEXITY FREQUENCY BAND AND VIRTUAL ANTENNA COMBINATION (VAC) SELECTION - A downlink Channel Quality Indicator (CQI) is estimated in two steps. Initially, one or more subsets of received reference symbols are selected. If the transmitter may transmit signals in one or more of two or more frequency bands, optimal frequency bands are selected based on a first subset of reference symbols. If the transmitter may transmit using one of two or more VACs, an optimal VAC is selected based on the first or a second subset of reference symbols. An SINR is subsequently calculated for the selected frequency band and VAC combination, based on more than the subset(s) of reference symbols. | 2009-09-24 |
20090238251 | APPARATUS FOR MANAGING FREQUENCY USE - A device includes a plurality of integrated circuits (ICs). An IC includes a millimeter wave (MMW) transceiver and a controller. The controller is operably coupled to the MMW transceiver and to: identify one or more other devices that have an intra-device MMW communication coverage area that overlaps with the intra-device MMW communication coverage area of the device. The controller also determines a first frequency range for use by the one or more other devices and the device for controlled radiation pattern intra-device MMW communications. The controller also coordinates allocation of a frequency use pattern to the one or more other devices and to the device for use for non-controlled radiation pattern intra-device MMW communications. | 2009-09-24 |
20090238252 | Managing SSL Fixtures Over PLC Networks - Managing solid-state luminary (SSL) fixtures over power line carrier (PLC) networks is described herein. Devices provided in this description include SSL arrays, and converter circuitry coupled to drive the SSL arrays. More specifically, the converter circuitry is adapted to convert input voltage received from a power distribution network into a level suitable for driving the SSL arrays. The devices also include (PLC) modems for coupling to PLC networks, and coupled to the converter circuitry. In particular, the PLC modems interface the converter circuitry to the PLC networks. | 2009-09-24 |
20090238253 | System and Method for Communicating Information Using Time-and-Frequency-Bounded Base Functions - Systems and methods for efficiently conveying one or more broadband communication channels over a transmission medium. Communication is effected by transforming an incoming digital bit stream into a Time-and-Frequency-Bounded (TFB) information stream that includes a plurality of TFB packets. This transformation is accomplished through the use of a plurality of TFB basis functions. More particularly, digital bit streams carried on one or more incoming channels are in the form of binary “on” and “off” bits. These digital bits are converted into a plurality of TFB waveform components which together comprise a TFB packet. The conversion process maps each of respective incoming digital bits to a corresponding one of a group of TFB functions, such that a first group of n bits is mapped to a first TFB function, a second group is mapped to a second TFB function etc. in a cyclical fashion. | 2009-09-24 |
20090238254 | SYSTEM AND METHOD FOR ESTABLISHING A DIAGNOSTIC TRANSMISSION MODE AND COMMUNICATING OVER THE SAME - Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct. | 2009-09-24 |
20090238255 | Estimation of Error Propagation Probability to Improve Performance of Decision-Feedback Based Systems - A decision feedback-based communication system comprising a unit for computing an estimated Error Propagation Probability (EPP) for a plurality of received signals, and a unit for receiving the EPP estimation and improving detected signal quality based thereon. The system can be a coded system or an uncoded system. | 2009-09-24 |
20090238256 | CQI FEEDBACK STRUCTURE - Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment. | 2009-09-24 |
20090238257 | LONELY PULSE COMPENSATION - An apparatus comprising a transmission line, a receiver circuit, and a high pass filter circuit coupled between the transmission line and a receiver circuit input. The receiver circuit is configured to receive a data signal over the transmission line at a first data rate. The high pass filter circuit is connected between the transmission line and a receiver circuit input and has a corner frequency that is less than approximately the first data rate and is greater or equal to than approximately one-half the second data rate. The second data rate is an effective data rate caused by an expected data pattern on the transmission line. Other devices, systems, and methods are disclosed. | 2009-09-24 |
20090238258 | Switched Mode Power Amplification - The invention concerns a method of amplifying a radio frequency signal, a switched mode power amplifying device and a radio transmission device comprising such a power amplifying device. The switched power amplifying device ( | 2009-09-24 |
20090238259 | METHOD OF RATE CONTROL FOR VIDEO FRAME COMPRESSION AND ENCODER THEREOF - A method for encoding a video frame includes segmenting a video frame into a plurality of frame segments; compressing a frame segment according to a plurality of compression rates to generate a plurality of coded outputs; selecting an actual coded output from the plurality of coded outputs based on a target rate; and packing the actual coded output to generate compressed data. A video frame encoder includes: a segment unit used for segmenting a video frame into a plurality of frame segments; a data compressing module used for compressing a frame segment according to a plurality of compression rates to generate a plurality of coded outputs; a selecting module used for selecting an actual coded output from the plurality of coded outputs based on a target rate; and a packing unit used for packing the actual coded output to generate compressed data. | 2009-09-24 |
20090238260 | TRANSMITTER AND RECEIVER FOR DIGITAL BROADCASTING - In order to alleviate stresses on a user, a transmitter comprises a channel coding section operable to encode input data stream according to a first modulation scheme, an additional information encode section operable to receive character data and additional information having a reserve area and including a transmission parameter relative to the first modulation scheme, to store the received character data in the reserve area of the additional information, and to encode the additional information in which the character data is stored according to a second modulation scheme with a smaller number of bits, which can be represented with a single symbol, than that of bits of a symbol to be used in the first modulation scheme; a multi-carrier modulation section operable to modulate multi-carriers with the data stream encoded according to the first modulation scheme and the additional information encoded according to the second modulation scheme. | 2009-09-24 |
20090238261 | Method, apparatus, and system for processing moving image - A moving image processing system includes an encoding apparatus encoding a moving image by encoding a picture order count (POC) while inserting a recovery point, and a decoding apparatus decoding the moving image encoded by the encoding apparatus. The encoding apparatus includes an insertion permission/rejection determining unit that determines whether a decoded frame is a reference frame and its frame number from an instantaneous decoding refresh frame is a positive integer times as large as a number of reference frames within a POC cycle, and a recovery point inserting unit that inserts the recovery point into the frame depending on a result of determination by the insertion permission/rejection determining unit. The decoding apparatus includes a POC decoding unit that decodes the POC by executing an initializing process such that the frame number within the POC cycle used in decoding the POC becomes zero, when decoding by random accessing is started. | 2009-09-24 |
20090238262 | Recording Streaming Delta-Encoded Data - Apparatus having corresponding methods, computer-readable media, and data structures comprise an input circuit adapted to receive a stream of delta-encoded data; a record circuit adapted to store the stream of delta-encoded data in a stream file; a current frame circuit adapted to maintain a current frame of the data based on the stream of delta-encoded data; a record frame circuit adapted to store the current frame in a frame file as an intraframe with a frame pointer at a plurality of different index times, wherein each frame pointer indicates a location in the stream file associated with the respective index time; and a record index circuit adapted to store the index times sequentially in an index file, and adapted to store an index pointer for each index time, wherein each index pointer indicates a location in the frame file of the intraframe associated with the respective index time. | 2009-09-24 |
20090238263 | Flexible field based energy efficient multimedia processor architecture and method - A programmable energy efficient codec system is provided for encoding and decoding a plurality of application environments. A camera Codec and control system for an HD camera is provided for encoding uncompressed HD-SDI video signals into an MPEG-2 transport stream. A stand-alone encoder decoder system is provided in a network configuration allowing for remote display and editing of HD-SDI video. At least one plurality of HD-SDI transport streams is generated from HD-Cameras encoded into MPEG-2 transport streams and output into a DVD-ASI signal and a TS/IP packet stream further provided is a decoder which accepts MPEG-2-TS/IP packet streams from a routed IP network which are decoded into an uncompressed HD-SDI transport stream for display. A set top box is provided for decoding audio and video HD-TV. A first HDMI interface into the decoder allows acceptance of an MPEG-2-TS from local storage media. Connection to an IP routed network is provided. The set top box may also request product specific decoder algorithms from a centralized manager. A kernel is provided in software which enables dramatic power reduction and ease of system update. | 2009-09-24 |
20090238264 | SYSTEM AND METHOD FOR REAL-TIME TRANSCODING OF DIGITAL VIDEO FOR FINE GRANULAR SCALABILITY - A video transcoder ( | 2009-09-24 |
20090238265 | Decoding apparatus, decoding method, and program - Disclosed herein is a decoding apparatus including: a pixel group information storage section configured to include memory areas each of which stores, as pixel group information, information concerning a corresponding pixel group and is referred to with a horizontal address of the pixel group, and an additional memory area that is located at a left end and stores a value indicating invalid pixel group information; a decoding information generation section configured to acquire the pixel group information identified by an address of a pixel group to be decoded and an address to the left thereof, and generating decoding information; a decoding section configured to perform a decoding process based on the decoding information; and a pixel group information update section configured to generate pixel group information and allowing it to be stored in the memory area identified by the address of the pixel group. | 2009-09-24 |
20090238266 | TRANSCODER - A category setting part sets a type of a decoded image based on characteristics of the decoded image which are fineness of the decoded image and an intensity of movement of the decoded image. A code amount setting part sets a target code amount of an output image based on the type of the decoded image. A quantization step value setting part sets a quantization step value of the output image based on the target code amount of the output image. A transcoder can set the target code amount of the output image depending on fineness of the decoded image. The transcoder can distribute the target code amount of the output image to a reference image and a predicted image depending on the intensity of movement of the decoded image. | 2009-09-24 |
20090238267 | Methods And Apparatuses For Use In Switching Between Streaming Video Bitstreams - Improved methods and apparatuses are provided for switching of streaming data bitstreams, such as, for example, used in video streaming and other related applications. Some desired functionalities provided herein include random access, fast forward and fast backward, error-resilience and bandwidth adaptation. The improved methods and apparatuses can be configured to increase coding efficiency of and/or reduce the amount of data needed to encode a switching bitstream. | 2009-09-24 |
20090238268 | METHOD FOR VIDEO CODING - A method for video coding is provided. The method comprises retrieving a video frame and at least one reference frame, determining a search window size according to the number of the at least one reference frame, performing prediction encoding on the video frame according to the number of the at least one reference frame and the search window size to obtain coding information and determining another search window size and a number of reference frames according to the coding information. | 2009-09-24 |
20090238269 | Method and Apparatus for Decoupling Frame Number and/or Picture Order Count (POC) for Multi-View Video Encoding and Decoding - There is disclosed and described a decoder and decoding method for decoding at least one picture corresponding to at least one of at least two views of multi-view video content from a bitstream, wherein in the bitstream at least one of coding order information and output order information for the at least one picture is decoupled from the at least one view to which the at least one picture corresponds. Furthermore, there is disclosed and described an encoder and encoding method for encoding at least one picture corresponding to at least one of at least two views of multi-view video content to form a resultant bitstream, wherein in the resultant bitstream at least one of coding order information and output order information for the at least one picture is decoupled from the at least one view to which the at least one picture corresponds. | 2009-09-24 |
20090238270 | Apparatus and method for modifying predicted values, and decoding system - An apparatus for modifying predicted values in a predicted image for input to a decoder starts by taking the most significant information bit plane from the predicted image and submitting it to the decoder to be decoded. Subsequent information bit planes are then taken in descending order and submitted to the decoder, but first each of these information bit planes is modified at the locations of prediction errors identified in the preceding information bit plane by comparing that information bit plane with the corresponding decoded bit plane. The modifications improve the general accuracy of the decoded image, enabling the decoder to decode the bit planes with less additional coded information than would otherwise be required. The apparatus is useful in distributed video coding systems. | 2009-09-24 |
20090238271 | APPARATUS AND METHOD FOR ENCODING AND DECODING USING ALTERNATIVE CONVERTER ACCODING TO THE CORRELATION OF RESIDUAL SIGNAL - Provided is an apparatus and method for encoding and decoding using alternative transform units according to the correlation of residual signals. The video encoding apparatus includes a first transforming unit for performing discrete cosine transform (DCT), first quantization, first inverse quantization, and inverse DCT on a block basis onto residual coefficients generated after intra frame prediction or inter frame prediction; a second transforming unit for performing discrete sine transform (DST), second quantization, second inverse quantization, and inverse DST on a block basis onto the residual coefficients; a selecting unit for selecting one having a high compression rate between the first and second transforming units for each block through performing rate-distortion optimization; and a flag marking unit for recording information about the selected transforming unit at a flag bit provided on a macroblock basis. | 2009-09-24 |
20090238272 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-24 |
20090238273 | VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-24 |
20090238274 | VIDEO ENCODING/DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-24 |
20090238275 | VIDEO ENCODING/ DECODING METHOD AND APPARATUS - A video encoding method comprises selecting one combination, for each block of an input video signal, from a plurality of combinations each including a predictive parameter and at least one reference picture number determined in advance for the reference picture, generating a prediction picture signal in accordance with the reference picture number and predictive parameter of the selected combination, generating a predictive error signal representing an error between the input video signal and the prediction picture signal, and encoding the predictive error signal, information of the motion vector, and index information indicating the selected combination. | 2009-09-24 |
20090238276 | Method and apparatus for video coding using prediction data refinement - There are provided methods and apparatus for video coding using prediction data refinement. An apparatus includes an encoder for encoding an image region of a picture. The encoder has a prediction refinement filter for refining at least one of an intra prediction and an inter prediction for the image region. The prediction refinement filter refines the inter prediction for the image region using at least one of previously decoded data and previously encoded data, the previously decoded data and the previously encoded data corresponding to pixel values in neighboring regions with respect to the image region. | 2009-09-24 |
20090238277 | Processing Video Data At A Target Rate - A system comprising a processor and a compression module coupled to the processor. The compression module is adapted to perform motion estimation on video data using an algorithm, the motion estimation performed at a rate. If the processor determines a difference between the rate and a target rate, the processor adjusts a precision level of the algorithm such that the difference is decreased. | 2009-09-24 |
20090238278 | VIDEO COMPRESSION USING SEARCH TECHNIQUES OF LONG-TERM REFERENCE MEMORY - Particular embodiments generally relate to video compression. In one embodiment, a store of reference frames is provided in memory. The reference frames may be classified based on a plurality of classifiers. The classifiers may correspond to features that are found in the reference frame. A frame to encode is then received. The frame is analyzed to determine features found in the frame. As macroblocks in the frame are encoded, a macroblock is analyzed to determine which feature may be included in the macroblock. The feature is used to determine a classifier, which is used to determine a subset of the reference frames. The subset is then searched to determine a reference frame for the macroblock. | 2009-09-24 |
20090238279 | Motion-compensated prediction of inter-layer residuals - Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video. | 2009-09-24 |
20090238280 | Method and Apparatus for Video Error Concealment Using Reference Frame Selection Rules - There are provided methods and apparatus for block-based error concealment. An apparatus includes an error concealment module for concealing a current block in a lost picture in a group of pictures by using a last available inter-coded picture in a previous group of pictures, when the lost picture is a first inter-coded picture in the group of pictures. The group of pictures has a pattern characterized as an intra-coded picture followed by a sequence of inter-coded pictures. | 2009-09-24 |
20090238281 | RECORDING MEDIUM HAVING RECORDED THEREON CODED INFORMATION USING PLUS AND/OR MINUS ROUNDING OF IMAGES - A recording medium having recorded thereon information related to coded data of an image sequence; wherein the information related to coded data of an image sequence is a set of coded frame information of a plurality of frames of an image sequence; wherein the coded frame information includes: information related to a difference image between an image of a current frame and a prediction image of the current frame, the prediction image being synthesized by performing motion compensation, information related to motion vectors estimated in performing the motion compensation, and rounding method information specifying either a positive rounding method or a negative rounding method for interpolating intensity values of pixels in performing the motion compensation when the input image is coded as a P frame, wherein no rounding method information is included in the coded frame information when the input image is coded as an I frame. | 2009-09-24 |
20090238282 | Method and device for generating an image data stream, method and device for reconstructing a current image from an image data stream, image data stream and storage medium carrying an image data stream - The invention is related to the generation of an image data stream and the reconstruction of an image from an image data stream. | 2009-09-24 |
20090238283 | METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE - Provided are a method and apparatus for encoding an image by dividing a prediction block of a current block into a plurality of regions, thereby compensating for average values of pixel values in the prediction block by each of the plurality of the regions, and a method and apparatus for decoding the image. The method of encoding an image includes determining a first prediction block of a current block to be encoded, dividing the determined first prediction block into a plurality of regions, dividing the current block into a plurality of regions by the same number as in the divided first prediction block and calculating a difference value between an average value of pixels of each region of the first prediction block and an average value of pixels of each region of the corresponding current block, compensating each region of the divided first prediction block by using the difference value and generating a second prediction block, and encoding a difference value between the second prediction block and the current block. | 2009-09-24 |
20090238284 | Reducing Differentials In Visual Media - Provided herein are processes, systems and devices for reducing differentials in visual media. Undesired differentials include undesired contrasts in brightness and/or color. Also described herein are signals, video frames and video streams that have been limited to produce a desired differential. Further described are methods for reducing triggers that can lead to migraines, nausea and neuronal paroxysms in viewers of visual media. | 2009-09-24 |
20090238285 | Method and Apparatus for Encoding/Decoding - The present invention relates to a multimedia data encoding/decoding method and apparatus. The encoding method includes generating a data area including a plurality of media data areas; generating a media information area including a plurality of track areas corresponding to the plurality of media data areas, respectively; and generating an animation area having information on an animation effect to be applied to media data included in the media data area. According to the present invention, the multimedia data encoding/decoding method and apparatus has an effect of being capable of constructing a slide show by only a small amount of multimedia data. Thus, a time taken to process and transmit the multimedia data can reduce. | 2009-09-24 |
20090238286 | METHOD AND APPARATUS FOR UNEQUAL ERROR PROTECTION IN TRANSMITTING UNCOMPRESSED VIDEO WITH VARIOUS TYPE OVER WIDEBAND HIGH FREQUENCY WIRELESS SYSTEM - Disclosed are an Unequal Error Protection (UEP) apparatus and method thereof for transmitting various types of uncompressed video signals in a broadband high frequency wireless system. The UEP apparatus may include a UEP transmission controller to verify a bit separation point of separating a color depth and priority for each pixel element being composed of a video data pixel when video data is inputted, and to control an error correction coding of correcting relatively many errors to be used in information with a high priority for each pixel element, a bit separator to separate the video data pixel through a control of the UEP transmission controller based on the priority for each pixel element, and a channel coding unit to use a corresponding error correction coding through the control of the UEP transmission controller based on the priority for each pixel element. | 2009-09-24 |
20090238287 | Method of determining a variable quantization step size for improving channel decoding,method and apparatus of performing channel decoding operation based on a variable quantization step size - A method of determining a variable quantization step size is disclosed. In the method of determining a variable quantization step size, a channel characteristic parameter is obtained in order to calculate a quantization step size (Δ) used in channel decoding. The quantization step size (Δ) is variably determined based on the channel characteristic parameter. Therefore, the method of determining a variable quantization step size may improve channel decoding. | 2009-09-24 |
20090238288 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD - A communication system includes a synchronizing signal generator that generates a synchronizing signal based on a timing of an alternating waveform in a power line, a data communicating circuit that performs the data communication, and a communication controller that controls to acquire a transmitting right utilizing a timing of the synchronizing signal and to control the communication circuit in accordance with whether or not the communication apparatus acquires the transmitting right. | 2009-09-24 |
20090238289 | CHANNEL ESTIMATION IN WIRELESS SYSTEMS WITH IMPULSIVE INTERFERENCE - Systems and methodologies are described that facilitate detecting impulsive interference of pilot signals in wireless communications networks and accounting for such interference in estimating data channels to decode the pilot signals. Portions of a received pilot signal can be compared to other portions to create correlated subsets of similar portions. The number of portions in a subset can indicate a high likelihood of non-interference, and portions that are not in the subsets can be disregarded or weighted less in estimating channels for decoding. In cases of ambiguous subsets or portions, one or more subsets/portions can each be used to estimate the channel and data can be decoded multiple times. The decoding that results in a higher decoding metric can be selected. Additionally, systems and methodologies for inserting pilot signals within data are described. | 2009-09-24 |
20090238290 | TRANSMITTING DEVICE, RECEIVING DEVICE, TRANSMITTING METHOD, RECEIVING METHOD AND WIRELESS COMMUNICATION SYSTEM - Provided is a transmitting device which improves a data rate while maintaining channel estimation accuracy, or improves channel estimation accuracy while maintaining a data rate, in a MIMO-OFDM system. In the transmitting device, a transmitting antenna information adding section ( | 2009-09-24 |
20090238291 | COMMUNICATION APPARATUS, METHOD, AND TANGIBLE MACHINE-READABLE MEDIUM THEREOF FOR PROCESSING RANGING INTERFERENCE OF AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SIGNAL - A communication apparatus, a method, and a tangible machine-readable medium thereof for processing ranging interference of an orthogonal frequency division multiplexing (OFDM) signal. The communication apparatus comprises a receiving unit, a processing unit, and a mask generating unit. The receiving unit receives the OFDM signal having a plurality of OFDM symbols. The processing unit estimates a delay value and an energy value of at least one ranging code according to the OFDM symbols. The mask generating unit generates a mask function according to the delay value and the energy value. Finally, the processing unit synthesizes the ranging interference in the OFDM signal and removes it according to the mask function. | 2009-09-24 |
20090238292 | MULTIPLE-INPUT MULTIPLE-OUTPUT COMMUNICATION SYSTEM CONTROL METHOD AND APPARATUS - A communication system control method, a communication system control apparatus and an apparatus for use in a communication system are provided. The communication system control apparatus includes an information collection unit to collect user set information about candidate user sets grouped by a plurality of base stations, and a scheduler to select target user sets corresponding to the plurality of base stations from among the candidate user sets based on an achievable sum data transmission rate of the plurality of base stations, and perform scheduling with respect to users included in the target user sets, the achievable sum data transmission rate being calculated based on the user set information. | 2009-09-24 |
20090238293 | OFDMA Based Medium Access Control and Frame Structure Design for Industrial Applications - A network includes a master and a set of slaves that communicate orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. A master broadcasts to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves. Each slave, in response to receiving the downlink polling packet, transmits simultaneously a response packet to the master using uplinks and the assigned sub-carriers. The master then transmits to the set of slave using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet comprise one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time. | 2009-09-24 |
20090238294 | TRANSMISSION APPARATUS AND TRANSMISSION METHOD - An transmission apparatus includes a pseudo data addition section configured to add pseudo data into transmission data for a free subcarrier of a radio frequency, an OFDM modulator subjecting the transmission data added with the pseudo data to OFDM modulation, a power amplifier amplifying power of a transmission signal of the radio frequency, the transmission signal based on an OFDM signal subjected to the OFDM modulation, an antenna radiating the amplified transmission signal by using the radio frequency; and a distortion compensation circuit compensating for a distortion characteristic of the power amplifier by correcting the OFDM signal with a distortion compensation coefficient accumulated corresponding to the power value of the OFDM signal, outputting the corrected signal for the power amplifier, and monitoring the output of the power amplifier to update the distortion compensation coefficient. | 2009-09-24 |
20090238295 | COMMUNICATING DATA USING WIDEBAND COMMUNICATIONS - This disclosure relates to varying load and modulation applied to each of multiple frequency subchannels based on anticipated attenuation experienced by those subchannels. Communicating data includes identifying a static component of a transmission medium for wideband communications having at least two subchannels determining a function of noise is attenuation versus frequency for the static component selecting wideband modulation schemes for the subchannels based on the function determined and communicating a data signal over the subchannels. The transmission medium includes a medium other than a copper telephone wire between and including a carrier facility and a termination of the copper telephone wire at an access point at a user premise and copper telephone wire in a cable riser in multitenant units and multi-dwelling buildings. Independent demodulation functions may be applied to at least two of the subchannels. | 2009-09-24 |
20090238296 | MULTIPLE ACCESS SYSTEM AND METHOD FOR 60 GHZ WIRELESS COMMUNICATIONS SYSTEM - A control apparatus for use in wireless communications includes an antenna unit having antennas, the number of the antennas being equal to a maximum allowable number of connections in a specific frequency band; and a controller for receiving a connection request signal from each terminal attempting to connect to the control apparatus via the antenna unit, and transmitting and receiving a data signal to and from each terminal connected to the control apparatus by using a multiple-input-multiple-output scheme. The controller transmit and receive the data signal to and from each terminal connected to the control apparatus by obtaining a signal value of each antenna based on a predicted channel matrix and the number and types of terminals connected to the control apparatus via the antenna and separating the data signal for each terminal from the signal value according to the multiple-input-multiple-output scheme. | 2009-09-24 |
20090238297 | Method For Selecting Subchannel Mode And MIMO Communication System Using The Same - The invention relates to Method for Selecting Subchannel Mode and MIMO Communication System Using the Same. A method for self-adaptively selecting a code modulation sub-channel mode is suitably used in a MIMO communication system that comprises a base station and mobile terminals, wherein the method comprises the steps of: the mobile terminal estimating channel state information thereof, and determining a sub-channel structure most suitable for data transmission thereto, based on the channel state information; the mobile terminal feeding back information on the determined sub-channel structure most suitable for data transmission thereto to the base station; and the base station determining a sub-channel structure used for a down link, based on the information on the sub-channel structure fed back by the mobile terminal. According to the present invention, the subchannel structure in the communication system can be self-adaptively changed according to the actual communication environment, so as to improve the entire communication quality and efficiency. | 2009-09-24 |
20090238298 | Method for transmitting and receiving precoded signal in MIMO communication system - A method for transmitting and receiving a precoded signal in a Multi-Input Multi-Output (MIMO) communication system is provided. In the method, a preceding matrix is selected from a codebook including one or more preceding matrices of each rank, each of the preceding matrices including a unitary matrix modified by an antenna selection element. A signal for transmission is then precoded by applying the selected preceding matrix to the signal for transmission and the precoded signal is transmitted through a selected antenna. | 2009-09-24 |
20090238299 | Detecting the Number of Transmit Antennas in Wireless Communication Systems - To detect the number of transmit antennas, a fast Fourier transform operation is performed on the received samples of the transmitted long training symbols of a preamble. Next, each of the Fourier transformed results is multiplied with the reference frequency-domain representation of the long training symbol so as to remove the effect of the symbols and to maintain the channel information. Next, inverse Fourier transform or least squares operations is performed on the multiplied values to compute channel impulse response. The number of shifted impulse response in the channel impulse response represents the detected number of transmit antennas. Packets containing preambles of the present invention may be received by extended devices as well as by legacy receivers that are not configured to receive and interpret these preambles. The training symbols may be cyclically-shifted and transmitted on different transmit antennas. | 2009-09-24 |
20090238300 | MULTI-LEVEL SIGNALING FOR LOW POWER, SHORT CHANNEL APPLICATIONS - Apparatus are disclosed, such as those involving a transmitter circuit that is configured to generate multi-level signals based on a plurality of data digits. One such transmitter circuit includes a signal output and an encoder configured to provide control signals based at least partially on the plurality of data digits. The transmitter circuit also includes a first set of switches configured to receive one or more of the control signals, and to selectively conduct a first or second voltage reference to the signal output. The transmitter circuit further includes first and second voltage drop circuits that provide third and fourth voltage references, respectively. The third and fourth voltage references have voltage levels between those of the first and second voltage references. The transmitter circuit also includes a second set of switches configured to receive one or more of the control signals, and selectively conduct the third or fourth voltage reference to the signal output. | 2009-09-24 |
20090238301 | MULTILEVEL SIGNAL RECEIVER - In the present multilevel signal receiver, an output signal of a comparator which judges a high-level of a multilevel signal and a signal obtained by inverting an output signal of a comparator which judges a low-level of the multilevel signal are input to an edge-triggered RS-FF, and an output signal of the edge-triggered RS-FF is fed back to the comparator on the high-level side via a LPF, so that a high-level threshold voltage is regulated. At the same time, a signal obtained by inverting the output signal of the comparator on the high-level side and the output signal of the comparator on the low-level side are input to an edge-triggered RS-FF, and an output signal of the edge-triggered RS-FF is fed back to the comparator on the low-level side via a LPF, so that a low-level threshold voltage is regulated. As a result, it becomes possible to provide a multilevel signal receiver of a simple circuit configuration, capable of controlling the thresholds used for level judgment of the multilevel signal of three or more levels to follow in real time a level change in the multilevel signal. | 2009-09-24 |
20090238302 | Method and apparatus for signal coding - A method and apparatus is disclosed for use in a communication system for encoding data to achieve more efficient coding rates and high data transmit rate, or a lower bit error rate. An encoder may receive a portion of the data to be encoded and process the portion of the data to create encoded data. The encoded data and the portion of the data not sent to the encoder are presented to a transform module configured to perform matrix multiplication on the inputs with a transform matrix. The resulting transformed data is mapped, using a mapper, either via an algorithmic approach or a manual mapping approach to generating a constellation mapped output. 2-dimensional encoding may occur. | 2009-09-24 |
20090238303 | METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK - A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station. | 2009-09-24 |
20090238304 | WIRELESS COMMUNICATIONS APPARATUS - Precoding information prior to MIMO transmission is described, comprising determining a suitable preceding perturbation. The perturbation is determined by assembling a list of candidate perturbations in reduced lattice space, transforming these back into information lattice space and determining which candidate precoder perturbation is most suitable given a performance criterion. | 2009-09-24 |
20090238305 | METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION - Multi-carrier modulation systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal. Multi-carrier modulation may be applied to existing channels, which may be of lower quality. An adaptive multi-carrier modulation transmitter may characterize an existing channel and ascertain the overall characteristics of the channel. The transmitter and receiver can then be configured to use various bandwidths and various modulations in order to match the transfer characteristic of the channel. A series of adaptive multi-carrier modulation transmitters and receivers can be integrated on a single integrated circuit. If multiple adaptive receivers and transmitters are integrated on a single integrated circuit, they may be used to upgrade existing networks to achieve any capacity desired. Each receiver and transmitter may characterize the channel and may configure the modulation and bandpass to the channel's characteristics. | 2009-09-24 |
20090238306 | PHASE TRACKING CIRCUIT AND RADIO RECEIVER USING THE SAME - A phase tracking circuit includes a divider part dividing an input signal that includes data sub-carriers and pilot sub-carriers into groups so that each of the groups includes at least one of the pilot sub-carriers, and a correcting part correcting phases of data sub-carriers of the input signal included in one of the groups on the basis of an amount of phase rotation of the at least one of the pilot sub-carriers included in the above one of the groups. | 2009-09-24 |
20090238307 | DIGITALLY CONTROLLED PHASE INTERPOLATOR CIRCUIT - Digitally controlled phase interpolator circuit. A phase selection control word undergoes decoding to generate a switch control word. The phase selection control word includes 2 quadrant indicating bits and phase interpolating bits for a 4 clock scheme (e.g., 4 clocks having phases 0°, 90°, 180°, and 270°). Such a phase selection control word could includes 3 sector indicating bits and phase interpolating bits for an 8 clock scheme (e.g., 8 clocks having phases 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315°). The gates of a number of differential pairs of transistors receive the various clock signals. A number of switching circuits direct current from corresponding current sources/supplies to coupled sources of the differential pairs of transistors, and an output clock is taken from coupled drains of the differential pairs of transistors. One or more current sources/supplies can be implemented to provide continuous current (e.g., in an always on manner) to the differential pairs of transistors. | 2009-09-24 |
20090238308 | Ultra low-power transmission system - An ultra low-power transmission system for use with a battery-operated device. The ultra-low power transmission system comprises an encoded transmitter and an addressable ultra -low power receiver. The ultra low-power receiver comprises an RF front-end block for receiving and demodulating an incoming RF signal. The RF front-end block includes an amplifier for amplifying the received RF signal and a frequency discriminator for demodulating the amplified RF signal to produce a baseband signal. The amplifier and the frequency discriminator are each comprised of enhancement mode, high-mobility electron transistors (E-HEMTs). The ultra low-power further receiver comprises a correlator for receiving the baseband signal from the frequency discriminator and detecting a codeword therein. The correlator comprises a plurality of switched capacitors for storing samples of the baseband signal. The correlator is operable to couple the plurality of switched capacitors in order to integrate the samples stored thereon. | 2009-09-24 |
20090238309 | Data exchange between channels in a data acquisition system - An apparatus and method for inter-channel data exchange in multi-channel data acquisition systems is disclosed. A multi-channel data acquisition system may include a data exchange layer coupling two or more channels of the data acquisition system. Data may be transmitted via the data exchange layer between the channels, enabling data from one channel to be processed and output by another channel. The data exchange layer may include serial or parallel communication means. | 2009-09-24 |
20090238310 | WEIGHT GENERATION METHOD FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING RF-BASED AND BASEBAND SIGNAL WEIGHTING AND COMBINING BASED UPON MINIMUM BIT ERROR RATE - A method for processing communication signals is disclosed and may include, in a receiver and/or a baseband processor coupled to the receiver, the receiver comprising a plurality of antennas, generating a plurality of RF weighting values based on one or more output bit error rates of the receiver. A plurality of spatially-multiplexed RF signals, which are received by the receiver, may be weighted with the one or more of the generated plurality of RF weighting values, to form a plurality of weighted RF signals. Two or more of the generated plurality of weighted RF signals may be combined to form one or more combined RF signals. Each of the one or more combined RF signals may be processed by a different RF processing chain. The one or more output bit error rates of the receiver may be minimized by the generation of the plurality of RF weighting values. | 2009-09-24 |
20090238311 | Reverse serial list Viterbi decoding to improve frame error rate performance - A convolutionally encoded frame to be decoded includes a first portion of bits having additional error protection and another portion without additional error protection. The decoding of the frame involves reverse Viterbi decoding or Viterbi decoding on a reversed bit sequence followed by applying a serial list Viterbi algorithm to the first portion. The result is that the list of probable sequences have unique sets of bits in the first portion. | 2009-09-24 |
20090238312 | System And Method For Tuning A Radio Receiver - A system for tuning a radio receiver includes a radio receiver configured to provide a downconverted digital error signal, a digital synthesizer circuit configured to generate a first local oscillator control signal, a digital automatic frequency control (AFC) circuit configured to generate a second local oscillator control signal, wherein the digital synthesizer circuit is enabled to generate the first local oscillator control signal when the digital AFC circuit is disabled, the first local oscillator control signal corresponds to an estimate of a desired local oscillator frequency, the digital AFC circuit is enabled to generate the second local oscillator control signal when the digital synthesizer circuit is disabled and the second local oscillator control signal corresponds to the desired local oscillator frequency. | 2009-09-24 |
20090238313 | STEPPED GAIN MIXER - An amplified stepped gain mixer portion improves the signal-to-noise ratio of a receiver by using multiple gain states to improve linearity. The mixer portion includes an amplifier, a switch and two transistors. The amplifier output is coupled to the sources of the two transistors. An oscillating signal is present on the transistor gates. The transistor drains are coupled to one another through the switch when the switch is closed. The mixer portion operates in two modes. In a 1/2 mode, the mixer portion output current flows only through the first transistor and not through the second transistor because the switch is open. In a 2/2 mode, the mixer portion output current flows through both transistors. The mixer portion is configured such that the switch is closed when a switching signal is asserted. The switching signal is asserted when a bit of a mixer control register is written to. | 2009-09-24 |
20090238314 | DIVERSITY RECEIVING DEVICE - It is a theme of the present invention to provide a diversity receiving device capable of reducing a power consumption to the utmost extent while keeping a predetermined received quality without measurement of an electric field strength and a fading pitch. A decision about whether or not the diversity reception is executed is made by sensing a received quality. Also, a diversity gain is reduced by a predetermined value by controlling the diversity gain in the diversity reception, then a receiving operation of a predetermined branch or a branch whose received quality is low is stopped when the received quality at that time is in excess of a previously set value, and then a supply of power to all circuit or a partial circuit of the branch whose receiving operation is stopped is shut down. Accordingly, a power consumption can be reduced to the utmost extent while keeping a predetermined received quality. | 2009-09-24 |
20090238315 | SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD - The present invention discloses a signal processing device and a signal processing method. The signal processing device includes a plurality of receiving devices, a storage module, a weighting module, and a processing module. Each of the receiving devices is capable of receiving an original signal stream, thus the plurality of receiving devices can generate a set of signal streams. The storage module is used for storing a plurality set of signal streams generated by the plurality of receiving devices. The weighting module can generate plurality sets of rotated signal streams according to a reference phase and the plurality sets of signal streams, and further generate a set of weighting signal according to the rotated signal streams. And, the processing module can generate a set of weighting signal streams according to the set of weighting signal and the plurality set of signal streams. | 2009-09-24 |
20090238316 | Receivers and methods for controlling operation of receivers - A method for controlling operation of a receiver may include: generating an operation control signal based on a signal-to-noise ratio (SNR) value of an N | 2009-09-24 |
20090238317 | APPARATUS AND METHOD FOR TRANSFERRING A SIGNAL FROM A FAST CLOCK DOMAIN TO A SLOW CLOCK DOMAIN - A circuit is provided for transferring a signal from a fast clock domain to a slow clock domain. The circuit includes a fast clock domain configured to receive an input signal and, responsively, transfer an intermediate signal. The circuit also a slow clock domain configured to receive the transferred intermediate signal from the fast clock domain and, responsively, generate an output signal. The circuit further includes a first synchronizer disposed in the slow clock domain and a second synchronizer disposed in the fast clock domain. The first synchronizer, operating with a slow clock, is configured to receive the intermediate signal and, responsively, provide the output signal as a transferred signal which is synchronized to the input signal. The second synchronizer, operating with a fast clock, is configured to receive a feedback signal from the first synchronizer for acknowledging synchronization of the output signal to the input signal. | 2009-09-24 |
20090238318 | MECHANISM FOR CONSTRUCTING AN OVERSAMPLED WAVEFORM FOR A SET OF SIGNALS RECEIVED BY A RECEIVER - A mechanism is provided for constructing an oversampled waveform for a set of incoming signals received by a receiver. In one implementation, the oversampled waveform is constructed by way of cooperation between the receiver and a waveform construction mechanism (WCM). The receiver receives the incoming signals, samples a subset of the incoming signals at a time, stores the subsets of sample values into a set of registers, and subsequently provides the subsets of sample values to the WCM. The WCM in turn sorts through the subsets of sample values, organizes them into proper orders, and “stitches” them together to construct the oversampled waveform for the set of incoming signals. With proper cooperation between the receiver and the WCM, and with proper processing logic on the WCM, it is possible to construct the oversampled waveform for the incoming signals without requiring large amounts of resources on the receiver. | 2009-09-24 |
20090238319 | MODULAR, PORTABLE DATA PROCESSING TERMINAL FOR USE IN A RADIO FREQUENCY COMMUNICATION NETWORK - Modular, portable data collection terminals are disclosed for use in mixed wireless and hard-wired RF communication networks, wherein various radio transmitter modules and associated antennas may be selectively added to a base terminal unit to solve networking problems associated with specific types of business environments. Modularity exists in both the hardware (splitting data collection and processing control circuitry from radio transceiver control circuitry) and software (splitting transceiver-specific, lower level communication protocol from generic, higher level communication protocol). The control circuitry, including associated microprocessors devices, interact to selectively activate communication circuits to perform necessary communication or data processing functions and enter and remain in a power-saving dormant state during other times. To support such dormant or “sleeping” states, a series of communication protocols provide for channel access to the communication network. The disclosed modular design also provides for automatic selection from a variety of available built-in and externally mounted antennas based on the particular type of radio transceiver(s) selected. | 2009-09-24 |
20090238320 | COMMUNICATION SYSTEM, COMMUNICATION METHOD, TRANSMITTING APPARATUS AND RECEIVING APPARATUS - A communication system, communication method, transmitting apparatus, and receiving apparatus are disclosed herein. The communication system includes: a first clock correlating unit, adapted to correlate a clock to be transmitted with a clock of a data frame at a transmitter of a clock transparent-transmission network; and a second clock correlating unit, adapted to correlate a clock of a data frame at a receiver of a clock transparent-transmission network with a clock to be recovered. The method includes: correlating the clock to be transmitted with the clock of the data frame at the transmitter of the clock transparent-transmission network, and correlating the clock of the data frame at the receiver of the clock transparent-transmission network with the clock to be recovered. | 2009-09-24 |
20090238321 | Nuclear power plant with actinide burner reactor - A nuclear reactor includes a coolant and a core. The core includes a moderator material and a plurality of fuel assemblies arranged within the moderator material, each fuel assembly including an inner region and an outer region surrounding the inner region. The inner region includes at least one first fuel structure containing at least one byproduct actinide, and the outer region includes a plurality of second fuel structures containing thermal spectrum driver fuel, the second fuel structures being less than one thermal neutron mean free path apart. Other embodiments are also provided, as is a nuclear power plant and a fuel assembly. | 2009-09-24 |
20090238322 | FUEL ROD AND ASSEMBLY CONTAINING AN INTERNAL HYDROGEN/TRITIUM GETTER STRUCTURE - A fuel assembly ( | 2009-09-24 |