13th week of 2009 patent applcation highlights part 29 |
Patent application number | Title | Published |
20090080508 | FAST SQUARE ROOT ALGORITHM FOR MIMO EQUALIZATION - Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations. | 2009-03-26 |
20090080509 | DATA PROCESSOR - To allow the user to specify easily a frame when video, of which the frame rate (or vertical scanning frequency) has been converted, is being edited. | 2009-03-26 |
20090080510 | Information Signal, Apparatus and Method for Encoding an Information Content, and Apparatus and Method for Error Correcting an Information Signal - A scalable information signal is protected in a more efficient and/or safe way by adopting the inter-relationship among the plurality of portions of different levels within the information signal in FEC protecting the information signal. In particular, portions of the information signal representing the information content at a higher level should have associated therewith redundancy information which is dependent not only on that part of this portion being disjoint to a respective overlapping lower level portion. Rather, redundancy information should also be dependent on the latter part so as to increase the chances of success of forward error correcting an error within the lower level portion at the reception side. | 2009-03-26 |
20090080511 | Method and apparatus for stream parsing and picture location - In one embodiment of the invention, video data is received in a buffer and parsed for a first and second start code to determine whether a complete video picture is present. After failing to identify the second start code, additional video data is added to the buffer and parsed beginning from a subsequent starting point, which is based on the first ending point. | 2009-03-26 |
20090080512 | METHOD AND APPARATUS FOR RECEIVING MULTIPLE SIMULTANEOUS STREAM BURSTS WITH LIMITED DVB RECEIVER MEMORY - An apparatus and method for receiving multiple simultaneous stream bursts comprising determining if a frame size is smaller than a size of an available memory; determining if a priority of a first packet is lower than a priority of a second packet, wherein the frame size is of a frame for the second packet; requesting to abort processing the first packet and to de-assign the available memory from the first packet if the priority of the first packet is lower than the priority of the second packet; waiting for the size of the available memory to become equal or greater than the frame size if the priority of the first packet is not lower than the priority of the second packet; and assigning the available memory to the frame for the second packet. | 2009-03-26 |
20090080513 | 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. | 2009-03-26 |
20090080514 | SENDER SIDE CHANNEL ADAPTIVE VIDEO TRANSMISSION - A channel adaptive video transmission system and method. A system ( | 2009-03-26 |
20090080515 | EFFICIENT TRANSFORMATION TECHNIQUES FOR VIDEO CODING - This disclosure describes efficient transformation techniques that can be used in video coding. In particular, intermediate results of computations associated with transformation of a first block of video data are reused in the transformation of a second block of video data. The techniques may be used during a motion estimation process in which video blocks of a search space are transformed, but this disclosure is not necessarily limited in this respect. Pipelining techniques may be used to accelerate the efficient transformation techniques, and transposition memories can be implemented to facilitate efficient pipelining. | 2009-03-26 |
20090080516 | METHOD OF ENCODING AND DECODING TEXTURE COORDINATES IN THREE-DIMENSIONAL MESH INFORMATION FOR EFFECTIVE TEXTURE MAPPING - Provided is a method of encoding and decoding texture coordinates of 3D mesh information. The method of encoding texture coordinates in 3D mesh information includes the steps of: setting an adaptive quantization step size used for quantizing the texture coordinates; quantizing the texture coordinates using the adaptive quantization step size; and encoding the quantized texture coordinates. | 2009-03-26 |
20090080517 | Method and Related Device for Reducing Blocking Artifacts in Video Streams - A method for reducing blocking artifacts in a video stream comprises receiving a picture of the video stream, wherein the picture includes a plurality of macroblocks and each of the plurality of macroblock includes four blocks, determining blocks with quantization parameters greater than a first threshold value in the picture, checking if block boundaries of the blocks are sharp and are real edges of objects in the picture according to pixel value differences between two adjacent pixels respectively located at both sides of the block boundaries, selecting filtering strengths of a de-blocking operation according to the pixel value differences when the block boundaries are sharp and are not real edges of the objects in the picture, and performing the de-blocking operation for two adjacent blocks at both sides of the block boundaries. | 2009-03-26 |
20090080518 | Rate control and video denoising for noisy video data - A method and a computer-readable medium containing computer program for simultaneously performing rate control and video denoising for video corrupted by noise are presented. Video data includes original video data and noise data. A variance of the noise data for each macroblock within a frame is estimated. Based on the estimated noise variance, a low bound quantization parameter is generated. The video data are reconstructed such that the distortion between the original video data and reconstructed video data is minimized over each macroblock within a frame. The minimization of the distortion between the original video and reconstructed video data is implemented using a quantization parameter that is equal to or larger than the low bound quantization parameter. | 2009-03-26 |
20090080519 | METHOD FOR ENCODING/DECODING VIDEO SEQUENCE BASED ON MCTF USING ADAPTIVELY-ADJUSTED GOP STRUCTURE - Provided is a method for performing motion compensated temporal filtering (MCTF)-based coding on a video sequence using the structure of adaptively divided group of pictures (GOP). The method includes the steps of, for each predefined 2 | 2009-03-26 |
20090080520 | VIDEO DECODING APPARATUS AND VIDEO DECODING METHOD - According to one embodiment, a video decoding apparatus includes a decoding module configured to decode syntax values of respective macroblocks included in a picture to be decoded in the video stream, an error detection module configured to detect an error in the syntax values decoded by the decoding module, and an error concealment processing module configured to execute, in the case where the picture to be decoded whose error has been detected by the error detection module is an intra-frame prediction picture for which motion compensation prediction processing is not performed, error concealment processing of rewriting the syntax values of the macroblock in which an error has been detected and subsequent macroblocks so as to estimate, from information of the intra-frame prediction picture or data of macroblocks that have been decoded, data of the macroblock in which an error has been detected and subsequent macroblocks. | 2009-03-26 |
20090080521 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 2009-03-26 |
20090080522 | 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. | 2009-03-26 |
20090080523 | REMOTE USER INTERFACE UPDATES USING DIFFERENCE AND MOTION ENCODING - Frames of user interface graphical data can be remotely rendered at a client during a remote session with a server by providing graphical data commands to the client. The commands include motion commands derived from objects that change position between a current frame and a new frame and delta commands derived from differences between the frames. The delta commands can be generated from a frame update after applying motion commands or without applying motion commands. A server identifies moving objects having a first position in the current frame and a second position in the new frame, generates motion hints for the moving objects, and reduces the motion hints based on collision detection, motion verification and other factors. Motion commands are generated for the reduced set of motion hints and applied to a copy of the current frame at the server. Differences between the modified current frame and the new frame are then encoded as delta commands. The server then sends the motion commands and delta commands to the client. The client receives and applies the commands to the current frame to render the new frame. | 2009-03-26 |
20090080524 | VIDEO DECODING APPARATUS AND VIDEO DECODING METHOD - According to one embodiment, a video decoding apparatus which decodes a compression-coded video stream, includes an error detection module configured to detect an error in a syntax values decoded by a decoding module, and an error concealment processing module configured to execute, in the case where the picture to be decoded whose error has been detected by the error detection module is an inter-frame prediction picture for which motion compensation prediction processing is performed, error concealment processing of rewriting the syntax values of the macroblock in which an error has been detected and its subsequent macroblocks so as to estimate, from information of the inter-frame prediction picture or data of macroblocks that have been decoded, data of the macroblock in which an error has been detected and its subsequent macroblocks. | 2009-03-26 |
20090080525 | System and Method for Adaptive Video Compression Motion Compensation - Methods and systems for video coding are provided. A method includes receiving a digital video stream. The digital video stream includes multiple sequential independent frames. The method further includes storing a first frame of the digital video stream. The method also includes encoding a second frame of the digital video stream using motion compensation with the stored first frame as a reference. | 2009-03-26 |
20090080526 | DETECTING VISUAL GESTURAL PATTERNS - A processing device and method are provided for capturing images, via an image-capturing component of a processing device, and determining a motion of the processing device. An adaptive search center technique may be employed to determine a search center with respect to multiple equal-sized regions of an image frame, based on previously estimated motion vectors. One of several fast block matching methods may be used, based on one or more conditions, to match a block of pixels of one image frame with a second block of pixels of a second image. Upon matching blocks of pixels, motion vectors of the multiple equal-sized regions may be estimated. The motion may be determined, based on the estimated motion vectors, and an associated action may be performed. Various embodiments may implement techniques to distinguish motion blur from de-focus blur and to determine a change in lighting condition. | 2009-03-26 |
20090080527 | Method and Apparatus for Providing a Fast Motion Estimation Process - A process performs a search on a base reference frame in a video signal to determine a first motion vector for each of the possible partitions of a current macroblock. The first motion vector for a partition provides the most optimal match for the partition in the base reference frame. An optimal partition for the current macroblock, which gives a minimum motion estimation cost among all the possible partitions in the base reference frame, is determined. The process performs the search on the optimal partition over a non-base reference frame in the video signal to determine a second motion vector that provides the most optimal match for the corresponding partition in the non-base reference frame. A simplified search is performed on each partition other than the optimal partition over the non-base reference frame to determine the second motion vector for the corresponding partition. | 2009-03-26 |
20090080528 | Video codec method with high performance - The present invention relates to a video codec method with high performance comprising the following steps: 1. predicting the motion vectors in the blocks to be predicted through Median Prediction and Up-layer Prediction, 2. terminate the motion prediction in the blocks predicted once the predicted motion vectors are below a threshold value. Otherwise, 3. Sample data in the block to be predicted and then, based on the data sampled, determine a block best resembling the above block from which samples are sampled for a further OTA search to finish a block motion prediction. By such steps, the overall amount of video encoding processing is dramatically reduced and performance is improved without sacrificing video quality. In addition, we may make a more accurate motion prediction of the block to be predicted to avoid the wrong prediction that an OTA algorithm might result in when the motion vector is exceedingly large. | 2009-03-26 |
20090080529 | IMAGE ENCODING APPARATUS, METHOD OF CONTROLLING THEREFOR, AND PROGRAM - An image encoding apparatus for performing inter-frame encoding of moving image data is provided. The apparatus refers to a block within a frame other than a current frame to generate a first prediction image of a block to be encoded within the current frame, and performs prediction encoding using the first prediction image. The apparatus sets areas at set positions that differ from each other at least between mutually adjacent frames; and determines whether the block to be encoded within the current frame belongs to the area set with respect to the current frame. When the block to be encoded has been determined to belong to the area, the first prediction image is generated, with regard to the block to be encoded, upon referring to a frame that is decodable on its own and, in terms of time, is situated ahead of and closest to the frame to be encoded. | 2009-03-26 |
20090080530 | 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. | 2009-03-26 |
20090080531 | IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, AND CONTROL METHOD THEREFOR - This invention scans a block using a window having a size of p×q pixels, and encodes p×q sub-block data each formed from pixel data at relatively identical positions in windows. A blocking unit receives a 16×16-pixel block image. A sub-block division unit scans the received block for each 2×2-pixel window, and generates 2×2 sub-block data each having a size of 8×8 pixels. Each sub-block is formed from pixel data at relatively identical positions in windows. A variable length coding unit encodes each sub-block data. When the sum of encoded sub-block data exceeds an allowable encoded data amount, a sub-block elimination unit eliminates encoded sub-block data until the sum becomes equal to or smaller than the allowable encoded data amount. The sub-block elimination unit outputs the remaining encoded sub-block data as encoded data of a block of interest. | 2009-03-26 |
20090080532 | VIDEO FRAME ENCODING AND DECODING - A video frame arithmetical context adaptive encoding and decoding scheme is presented which is based on the finding, that, for sake of a better definition of neighborhood between blocks of picture samples, i.e. the neighboring block which the syntax element to be coded or decoded relates to and the current block based on the attribute of which the assignment of a context model is conducted, and when the neighboring block lies beyond the borders or circumference of the current macroblock containing the current block, it is important to make the determination of the macroblock containing the neighboring block dependent upon as to whether the current macroblock pair region containing the current block is of a first or a second distribution type, i.e., frame or field coded. | 2009-03-26 |
20090080533 | VIDEO DECODING USING CREATED REFERENCE PICTURES - Reference pictures can be created to assist with video decoding. For example, a method for decoding video can comprise receiving an encoded video bit stream, determining that a reference picture is needed, and creating and inserting the reference picture into the encoded video bit stream. A method for decoding video can also comprise receiving an encoded video bit stream, performing bit stream parsing, determining that a reference picture is needed, selecting a representation level for the reference picture, and conveying data for the selected reference picture to a hardware accelerated graphics processing unit. Various video operations, such as creating reference pictures and related information, can be performed by central processing units, while other video decoding operations can be performed by graphics processing units. | 2009-03-26 |
20090080534 | IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODED BITSTREAM AND RECORDING MEDIUM - The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to. | 2009-03-26 |
20090080535 | Method and apparatus for weighted prediction for scalable video coding - There are provided scalable video encoder and decoders, and corresponding scalable video encoding and decoding methods. A scalable video encoder includes an encoder for encoding a block in an enhancement layer of a picture by applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for encoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. The scalable video decoder includes a decoder for decoding a block in an enhancement layer of a picture by applying a same weighting parameter to an enhancement layer reference picture as that applied to a lower layer reference picture used for decoding a block in a lower layer of the picture. The block in the enhancement layer corresponds to the block in the lower layer, and the enhancement layer reference picture corresponds to the lower layer reference picture. | 2009-03-26 |
20090080536 | IMAGE PROCESSING APPARATUS, DISPLAY APPARATUS, DISPLAY SYSTEM AND CONTROL METHOD THEREOF - An image processing apparatus includes: a signal receiver which receives an image signal; a signal processor which compresses the image signal; a wireless transmitter which transmits the compressed image signal to a display apparatus wirelessly; and a controller which controls the signal processor to raise a compression rate of the image signal according to an increased distance between the wireless transmitter and the display apparatus. | 2009-03-26 |
20090080537 | ROBUST DIGITAL COMMUNICATION SYSTEM - Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave. | 2009-03-26 |
20090080538 | Method and Apparatus for Decoding a Video Signal - An apparatus for transmitting a video signal has a receiver, a processor and a multiplexer. The receiver receives the video signal and separates a composite sync signal from the video signal. The processor generates a vertical sync signal and a selecting signal with reference to timing characteristics of the composite sync signal. The multiplexer generates a horizontal sync signal by selectively outputting the composite sync signal when the selecting signal is at a first logic level and outputting a reference signal when the selecting signal is at a second logic level. A method for transmitting a video signal is also disclosed. | 2009-03-26 |
20090080539 | Method and apparatus for smooth digital media playback - In one embodiment of the invention, an apparatus may comprise a memory to receive original video data that includes a continuity of time stamps and a discontinuity of time stamps. A processor may shift a first time stamp from the continuity of time stamps to the discontinuity of time stamps by an adaptively modified distance and play the shifted time stamp in a smooth fashion. | 2009-03-26 |
20090080540 | PULSE TRANSMITTER, PULSE RECEIVER, PULSE TRANSMITTING METHOD, AND PULSE DEMODULATING METHOD - A pulse transmitter having a relatively simple structure and generating a pulse modulating signal even at a high transmission rate. In the pulse transmitter, a symbol pulse generating part ( | 2009-03-26 |
20090080541 | METHOD AND SYSTEM FOR TRANSMISSION AND/OR RECEPTION OF SIGNALS UTILIZING A DELAY CIRCUIT AND DDFS - Aspects of a method and system for transmission and/or reception of signals utilizing a delay circuit and a DDFS are provided. In this regard, a first signal may be delayed by 90°, via a plurality of delay elements and variable capacitance, to generate a second signal. The first and second signal may be mixed to generate a first LO signal, which may be utilized for a first frequency conversion. A second LO signal may be generated via a DDFS and may be utilized for a second frequency conversion. A digital input word of the DDFS, a value of the variable capacitance, and/or at least a portion of the delay elements, may be programmatically controlled based on a desired frequency for transmission and/or desired frequency for reception. The first frequency conversions may be up-conversions and/or down-conversions to/from baseband, one or more intermediate frequencies, and/or RF. | 2009-03-26 |
20090080542 | Interference Mitigation For Impulse-Based Communication - In a pulse-based communication system a transmitting device may generate a series of pulses to convey information via a communication medium to a receiving device. In some situations, interference from one or more interfering devices may alter the pulse energy as it is transmitted through the communication medium. To mitigate the effect of such interference, a receiving device may mark certain received pulses as erasures. In this way, such pulses may be ignored during the decoding operation of the receiver. | 2009-03-26 |
20090080543 | ADAPTIVE CYCLIC DELAY DIVERSITY FOR MOBILE DEVICES - Embodiments of the present invention provide for adaptive cyclic delay diversity to be used in wireless transmissions to mobile devices. The cyclic delay diversity may be adapted through cyclic delay parameters determined based at least in part on a determined speed of the mobile device. Other embodiments may be described and claimed. | 2009-03-26 |
20090080544 | Method and apparatus for an OFDMA parallel architecture scheduler - A method and apparatus for calculating an optimal sub-channel allocation of Orthogonal Frequency Division Multiple Access (OFDMA) from a first bipartite graph that may map users, to a second bipartite graph that may map additional users, including original users. A calculation of each bipartite graph may include a calculation of maximum weight paths and matchings. Using a bipartite graph method for OFDMA sub-channel allocation may improve the time and complexity when establishing an OFDMA wireless system. | 2009-03-26 |
20090080545 | Reducing data stream jitter during deinterleaving - In one embodiment, the present invention includes a deinterleaver having an input interface to receive orthogonal frequency division multiplexing (OFDM) symbols from a demodulator, a memory coupled to the input interface to store the OFDM symbols, an output interface coupled to the memory to receive the OFDM symbols stored in the memory, and a digital phase lock loop (PLL) to control and adjust a reading rate of data from the memory responsive to dynamic and static channel conditions. | 2009-03-26 |
20090080546 | LIMITATION FEEDBACK METHOD FOR MULTIANTENNA SYSTEM, CHANNEL PARAMETER GENERATING METHOD, AND WIRELESS RECEIVER - A channel parameter generating method realizing limited feedback of a MIMO system. In this method, a channel parameter of a MIMO channel fed from a wireless receiver back to a wireless transmitter is generated. Channel estimation is carried out by using a signal received through a MIMO channel, the ranks of the space domain correlation matrix and the time domain correlation matrix of the MIMO channel are derived from the channel matrix obtained by the channel estimation, an operation to decrease the number of dimensions of the column of the estimated channel matrix is carried out if the rank of the derived space domain correlation matrix is smaller than that of the derived time domain correlation matrix, thereby a channel parameter is obtained, an operation to decrease the number of dimensions of the row of the estimated channel matrix is carried out if the rank of the derived time domain correlation matrix is smaller than that of the derived space domain correlation matrix, and a channel parameter is obtained. | 2009-03-26 |
20090080547 | BASE STATION APPARATUS AND MOBILE STATION APPARATUS - A base station apparatus that transmits frames in accordance with a communication format, and a mobile station apparatus that uses the frames to determine the communication format of the base station apparatus, and then performs an adaptive cell search in accordance with the determined communication format. The base station apparatus ( | 2009-03-26 |
20090080548 | OFDM DEMODULATION DEVICE - A delay indicator calculator calculates at least two of a first delay indicator indicating a delay time determined based on a correlation value having a predetermined difference from the maximum value of the correlation signal, a second delay indicator indicating a change of a delay time determined based on time during which the correlation signal has no less than a predetermined value, and a third delay indicator indicating a change of a time difference between main and delay path peaks. An estimator generates a state estimation of the transmission path based on the probabilities of the at least two delay indicator values exceeding respective reference values for a plurality of symbols. | 2009-03-26 |
20090080549 | Efficient MIMO precoding feedback scheme - Methods and apparatus for efficiently feeding back preceding information in a multiple input multiple output (MIMO) system. A codebook including a plurality of codebook entries is constructed. A plurality of subsets of codebook entries are defined for the codebook. Each subset includes a plurality of codebook entries. A subset of codebook entries is selected for precoding data in dependence upon a channel condition, and a codebook entry is selected from the subset. Then, a subset index corresponding to the selected subset, and a codebook entry index corresponding to the selected codebook entry within the selected subset, is transmitted as feedback information. | 2009-03-26 |
20090080550 | Communications device - A communications device for generating a Zadoff-Chu sequence includes a storage unit storing real and imaginary part values of exp{−j·(2π/N)·(m/2)} for the Zadoff-Chu sequence of the sequence length N, wherein m is an integer (0≦m<(N+1)/2); a parameter acquisition unit acquiring a sequence number u, data number k, cyclic shift amount Δ and cyclic shift number Ncs; a phase position detecting unit detecting a phase position of the Zadoff-Chu sequence with acquired parameters; and a sequence determination unit determining m to read a real and an imaginary part value in the storage unit based on the phase position and determining a plus/minus sign of each of the real and the imaginary part value. The device further includes a sequence acquisition unit acquiring the Zadoff-Chu sequence by using the real and the imaginary part values according to m determined by the sequence determination unit and the signs thereof determined. | 2009-03-26 |
20090080551 | Bandwidth Efficient Coding for an Orthogonal Frequency Multiplexing OFDM System - A method for encoding an OFDM signal includes pairing two adjacent subcarriers of an OFDM signal as a group, changing a modulated symbol set of the OFDM signal to a modified symbol set for coding the OFDM signal, and providing a modified baseband OFDM signal with an increased frequency separation between the subcarriers and reducing the total number of subcarriers being used for transmission over each OFDM symbol interval. | 2009-03-26 |
20090080552 | SYSTEM FOR MULTIPLE USE SUBCHANNELS - Systems for multiple use subchannels are provided. In one embodiment, a bidirectional communication system comprises: a first remote unit for communicating with a host using OFDM, the host communicatively coupled to a plurality of remote units in a multipoint-to-point configuration. The first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using OFDM, the first remote unit including a modulator for modulating the up to a plurality of tones using OFDM. The modulator is configured to adjust a carrier frequency and timing of the plurality of tones such that when any tones are transmitted from the first remote unit and at least one other remote unit, the orthogonality of the tones when received at the host unit is improved. Both control data and payload data are transmitted on a first tone of the plurality of tones. | 2009-03-26 |
20090080553 | SYNCHRONIZATION TECHNIQUES IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Systems and methods for synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing are provided. In one embodiment, a method for multipoint-to-point communication comprises: receiving at a host a plurality of upstream symbols transmitted from a plurality of remote units, the upstream symbols transmitted on a plurality of orthogonal carriers modulated using an inverse Fourier transform; and determining respective round trip path delay values associated with each of at least two of the plurality of remote units. | 2009-03-26 |
20090080554 | TONE ALLOCATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Systems and methods for OFDM tone allocation are provided. In one embodiment, an end-user communication device comprises: a first remote unit for communicating with a host unit using orthogonal frequency division multiplexing (OFDM), the host unit communicatively coupled to a plurality of remote units in a multipoint-to-point configuration, wherein OFDM waveform from distinct remote units of the plurality of remote units combine to a unified OFDM waveform at the host unit. The first remote unit is configured to transmit up to a plurality of tones, the up to a plurality of tones modulated with upstream information using OFDM. The first remote unit is configured to determine when bandwidth is needed for upstream transmission to the host unit. The first remote unit is configured to transmit a request for bandwidth to the host unit on a first tone of the plurality of tones, wherein access to the first tone is contention-based. | 2009-03-26 |
20090080555 | GUARD INTERVAL LENGHT SELECTION IN AN OFDM SYSTEMS BASED ON COHERENCE BANDWIDTH OF THE CHANNEL - A system, apparatus and methods are described that select a guard interval length ( | 2009-03-26 |
20090080556 | Reducing Peak-to-Average-Power-Ratio in OFDM/OFDMA Signals by Deliberate Error Injection - A method and system reduces a peak to average power ratio of a transmitted OFDM signal. An input signal is encoded using a forward error correcting code to produce a codeword corresponding to the input signal. A peak power corresponding to the codeword is measured. The peak power is compared with a predetermined threshold, and a set of selected bits in the codeword are manipulated if the peak power is greater than the predetermined threshold to deliberately produce an erroneous codeword in which the peak power is less than the predetermined threshold, which is transmitted. | 2009-03-26 |
20090080557 | Quality of Service Based Antenna Mapping for Multiple-Input Multiple-Output Communication Systems - The teachings presented herein provide methods and apparatus for use in a multiple-input multiple-output (MIMO) system transmitting a plurality of data substreams to a receiver employing ordered successive interference cancellation detection according to a predetermined sequence for decoding the data substreams. In an exemplary method, a quality of service (QoS) requirement is determined for each of two or more application-specific data streams, and the application-specific data streams are assigned to the data substreams according to the determined QoS requirements and the predetermined sequence, so that application-specific data streams having more stringent QoS requirements are decoded earlier than application-specific data streams having less stringent QoS requirements. In some embodiments, the determined QoS requirements comprise maximum delay requirements, and application-specific data streams requiring shorter maximum delays are assigned to earlier-decoded data substreams than application-specific data streams having less stringent maximum delay requirements. In other embodiments, the determined QoS requirements comprise an application-specific robustness, wherein application-specific data streams corresponding to less robust applications are assigned to earlier-decoded data substreams than application-specific data streams corresponding to more robust applications. | 2009-03-26 |
20090080558 | SPACE-TIME MIMO WIRELESS SYSTEM BASED ON FEEDBACK OPTIMUM WEIGHT DESIGN - A FOW-based 2-by-2 space-time MIMO wireless system based on Alamouti's Space-Time block code with a feedback optimum weight (FOW) technique is provided, including a MIMO transmitter, a 2-by-2 MIMO channel, two FOW-based MIMO receivers, an optimum weight vector module, a Bayes decision algorithm module, a coherent combining unit, and a maximum likelihood detector (MLD). The FOW-based 2-by-2 space-time MIMO wireless system of the present invention uses the Bayes decision algorithm to determine the optimum weights at the receiver which multiplies the transmitted output signals at spatial antennas via up-link Fast Channel Feedback (i.e. closed-loop MIMO) and also the corresponding receiving signals. In addition, the present invention includes a Scheduler design to arrange these weight elements in accordance with space-time constellation signals, which allows linear processing using Alamouti's 2-branch maximum likelihood detection without increasing the hardware complexity. | 2009-03-26 |
20090080559 | Antenna diversity by means of its through connection for receivers of digital radio signals - The invention relates to an antenna diversity in which high-frequency signals (HF signals) received via a plurality of antennas are fed to a respective tuner ( | 2009-03-26 |
20090080560 | CLOSED-LOOP BEAMFORMING WEIGHT ESTIMATION IN FREQUENCY DIVISION DUPLEX SYSTEMS - A closed-loop beamforming weight estimation process in which, at a first device, respective ones of a plurality of beamforming weight vectors are applied to subcarriers associated with a pattern of subcarriers assigned to a corresponding subcarrier stream such that the plurality of subcarriers assigned to a subcarrier stream is weighted by a corresponding one of the plurality of beamforming weight vectors to produce a plurality of beamformed streams transmitted from a plurality of antennas of the first device to a second device. The second device estimates and analyzes the channel information for each of the received beamformed streams to identify at least one of the beamformed streams that is preferred over the others. The second device transmits to the first device a feedback signal that contains information identifying the preferred beamformed stream. The first device computes a plurality of new beamforming weight vectors based on the information identifying the preferred beamformed stream. The first device applies the new beamforming weight vectors to streams of subcarriers to repeat the process until system parameters or conditions are met. | 2009-03-26 |
20090080561 | PILOT PATTERN DESIGN FOR A STTD SCHEME IN AN OFDM SYSTEM - A transmitting device for transmitting data and pilot symbols in an OFDM transmission system having transmission antennas. The device includes symbol generating means for generating data and pilot symbols, means for transmitting the data and pilot symbols using subcarriers of the OFDM system. The symbol generating means generates a first and second type pilot symbol, the second having an inverted value of the first so that a first pilot symbol pattern to be transmitted by using one of said plurality of transmission antennas has a different pattern in the frequency and time dimension from a second pilot symbol pattern to be transmitted by using another transmission antenna. First and second pilot symbols are comprised in respective first and second pilot symbol patterns, where at least some of the first and second pilot symbols have the same time allocation and being alternately identical and inverted to each other. | 2009-03-26 |
20090080562 | Wireless SATA/SAS Data Transfer System - A wireless data transfer system. The system includes a first hard disk, a first hard disk interface, and a first transmitter. The first hard disk interface is configured to retrieve first read data from the first hard disk and to create a first bit serial signal from the retrieved first read data. The first bit serial signal conforms to a protocol selected from the group consisting of serial advanced technology attachment (SATA) protocol and serial attached small computer system interface (SAS) protocol. The first transmitter is configured to operate at selected carrier frequency greater than 50 GHz, comprising, to operate at effective isotropic radiated power level less than or equal to 40 dBm, to receive the first bit serial signal from the first hard disk interface, to modulate the first bit serial signal using amplitude shift keying modulation to substantially create directly a first signal, and to transmit the first signal. | 2009-03-26 |
20090080563 | SIGNAL GENERATING APPARATUS AND METHOD THEREOF - A signal generating apparatus is disclosed. The signal generating apparatus includes a test data generator for generating a test data; a fractional-N phase-locked loop device coupled to the test data generator for generating a synthesized signal according to the test data when the test data is received; and a calibrating device coupled to the fractional-N phase-locked loop device for measuring power of the synthesized signal to generate a calibration signal utilized for adjusting the fractional-N phase-locked loop device. | 2009-03-26 |
20090080564 | Context-sensitive overhead processor - The present invention discloses an overhead processor for data transmission in digital communications. First, incoming data is transmitted along a datapath. If the incoming data forms one group of data, said group of data is transmitted along the datapath, into an elastic store and then is transmitted into one or more flip-flop(s); if there are two or more groups of incoming data, arriving separately, the initial group(s) of received data can optionally be held in an elastic store until the arrival of additional group(s) of data, and upon the arrival of said additional group(s) of data, all of the received data are combined and then transmitted into said flip-flop(s). The data is then transmitted from said flip-flop(s) to a logic element, which uses the received data context to determine the new data context of any imminent incoming data. The logic element transmits this new data context to a second flip-flop, which transmits the new data context values into an elastic store. Said elastic store transmits the new data context back through the first flip-flop(s) and into the logic element, prior to any additional incoming bytes arriving along the datapath. Therefore, the present invention is able to reduce the number of overhead processors required for multi-byte data transmission, potentially reducing the number of required overhead processors in digital communications to 1. | 2009-03-26 |
20090080565 | PULSE SHAPING FOR EGPRS-2 - A method and apparatus are disclosed for wireless transmission using two or more pulse shaping filters. Wireless transmit/receive units (WTRUs) and network entities are capable of utilizing a narrow band pulse shaping filter, a wideband pulse shaping filter, or both. The network entity and/or the WTRU select a pulse shaping filter to be used and transmits the selection by means of signaling. The signaling may be performed through layer | 2009-03-26 |
20090080566 | SPACE-TIME BLOCK CODING SYSTEMS AND METHODS - Althrough orthonormal space-time coding matrices provide for optimal communication system performance in that associated correlation matrices include no non-zero off-diagonal elements, unity code rate orthonormal coding matrices are difficult to identify for arbitrary communication network equipment. According to embodiments of the present invention, non-orthonormal space-time coding matrices, for which associated correlation matrices include non-zero off-diagonal elements, are used to encode data symbols. The non-orthonormal space-time coding matrices are more easily determined, and undesirable effects of the non-zero off-diagonal components are reduced by selecting a coding matrix from among a number of such matrices. For example, a particular space-time coding matrix may be selected from a number of generated space-time coding matrices based on a number of non-zero off-diagonal elements or a power of a trace of the associated correlation matrices. | 2009-03-26 |
20090080567 | WIRELESS COMMUNICATION USING A PLURALITY OF ANTENNAS - A wireless communication apparatus includes a plurality of antennas, transmits a plurality of known symbol sequences each including a plurality of known symbols by using the antennas, each of the known symbols having subcarrier arrangement on which plural known information of the each of the known symbols are carried on, and inversion/non-inversion of a phase of known information on one of two adjacent subcarriers of the subcarrier arrangement being controlled in accordance with the number of the known symbols and time position of the each of the known symbols, and transmits data symbols by using the antennas after the known symbol sequences are transmitted. | 2009-03-26 |
20090080568 | SIGNAL GENERATOR WITH ADJUSTABLE PHASE - Phase of an output signal is based on comparison of an oscillating signal with an adjustable threshold. Here, adjustment of the threshold results in a corresponding adjustment of the phase of the output signal. For example, the adjustable threshold may comprise an adjustable bias signal for a transistor circuit whereby the oscillating signal is provided as an input to the transistor circuit and the output of the transistor circuit provides the output signal. In some aspects these phase adjustment techniques may be employed to provide one or more tunable multiphase clocks. | 2009-03-26 |
20090080569 | METHOD OF GENERATING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of generating a reference signal includes acquiring a base sequence and acquiring a reference signal sequence with a length N from the base sequence. Good PAPR/CM characteristics of the reference signal can be kept to enhance performance of data demodulation or uplink scheduling. | 2009-03-26 |
20090080570 | INTEGRATED CIRCUIT AND METHOD OF GENERATING A BIAS SIGNAL FOR A DATA SIGNAL RECEIVER - An integrated circuit and method of generating a bias signal for a data signal receiver is disclosed. One embodiment provides a replica circuit configured to generate a feedback signal, wherein the replica circuit is a replica of at least a part of a data signal receiver, and wherein the feedback signal depends on a reference signal of the data signal receiver. A compensation circuit is configured to compensate an influence of the reference signal on the feedback signal. An amplifier circuit is configured to generate a bias signal based on the feedback signal, the bias signal being provided to the data signal receiver. | 2009-03-26 |
20090080571 | RECEPTION APPARATUS AND RECEPTION METHOD - A receiving apparatus includes an amplification section that amplifies a received signal and a frequency conversion section that converts a frequency of the received signal, from a radio frequency to a baseband, the baseband having a lower frequency than the radio frequency. A gain control section amplifies, by a predetermined gain, the signal that has been subjected to the frequency conversion to the baseband. A voltage calibration section performs calibration on an offset voltage generated in the signal subjected to frequency conversion to the baseband. A time constant control section sets a first time constant during a reception operation and sets a second time constant, which is reduced with respect to the first time constant, during the calibration. A filter section passes a received signal of a predetermined band, with the first time constant or the second time constant, an operation control section stops operation of the amplification section during the calibration, controls the amplification section to operate during the reception operation, and controls the operation of the amplification section so as to reduce a residual offset voltage caused by switching the operation of the amplification section. | 2009-03-26 |
20090080572 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A digital broadcast receiver and a control method thereof are disclosed. The control method includes receiving a broadcast signal into which mobile service data and main service data are multiplexed, extracting TPC signaling information and FIC signaling information from a data group in the received mobile service data, acquiring a program table describing virtual channel information and a service of an ensemble, using the extracted FIC signaling information, the ensemble being a virtual channel group of the received mobile service data, detecting a conditional access descriptor indicating whether the mobile service data was encrypted, using the acquired program table, and controlling such that the encrypted mobile service data is decrypted, using information of the detected conditional access descriptor. | 2009-03-26 |
20090080573 | DIGITAL BROADCASTING RECEIVER AND METHOD FOR CONTROLLING THE SAME - A reception system and a method for processing data in the reception system are disclosed. The reception system includes a baseband processor receiving a broadcasting signal including mobile service data and main service data, the mobile service data including first service data and second service data having a format different from that of the first service data, the second service data configuring a Reed Solomon (RS) frame, and the RS frame including a table which describes the second service data and signaling information of the second service data, a table handler parsing the table from the RS frame and extracting the signaling information of the second service data, and service handlers parsing the second service data from the RS frame on the basis of the extracted signaling information of the second service data. Accordingly, it is possible to transmit/receive service data having a format different from that of the existing method in a single MH system. | 2009-03-26 |
20090080574 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - A digital broadcast receiver and a control method thereof are disclosed. The control method includes receiving a broadcast signal into which mobile service data and main service data are multiplexed, extracting transmission parameter channel (TPC) signaling information and fast information channel (FIC) signaling information from a data group in the received mobile service data, acquiring control data required to decrypt an encrypted service included in an ensemble by using the extracted FIC signaling information, the ensemble being a virtual channel group of the received mobile service data, and controlling such that the encrypted service is decrypted by using the acquired control data. | 2009-03-26 |
20090080575 | Method for near optimal joint channel estimation and data detection for COFDM systems - Joint channel estimation and maximum likelihood decoding method for Coded Orthogonal Frequency Division Multiplexing (COFDM) systems are presented. Using this method in conjunction with convolutional coding, robust and nearly optimal coherent detection can be achieved in rapid dispersive fading channels. Significant performance gain in packet data throughput is realized in a system with aggressive frequency reuse. A method for estimating channel characteristics in a multicarrier transmission system comprising the steps of receiving a multicarrier signal, applying Fast Fourier transformations to the multicarrier signal, estimating channel characteristics of a multicarrier channel over which the multicarrier signal was transmitted using a combination of iterative processing and iterative backward processing, and decoding the transformed multicarrier signal is presented. | 2009-03-26 |
20090080576 | ENHANCED CARRIER FREQUENCY OFFSET ESTIMATOR - A method is provided for estimating a frequency offset in a carrier signal caused by the Doppler effect. The method determines a frequency offset estimate by utilizing a multi stage estimation scheme. More specifically, the method determines the frequency offset estimate of a data frame by iteratively estimating the frequency offset by comparing different portions of the preamble. As the length of the sampled patterns varies, the frequency offset estimates vary in accuracy and range. The method may adjust frequency offset estimates that are out of range. Finally, the receiver obtains a frequency offset estimate for the data frame from a weighted combination of frequency offset estimates. This method is applicable in WiFi (IEEE 802.11a/g), WiMax (IEEE 802.16), and WAVE (IEEE 802.11p) systems. | 2009-03-26 |
20090080577 | COMMUNICATION SEMICONDUCTOR INTEGRATED CIRCUIT, RADIO COMMUNICATION SYSTEM, AND ADJUSTMENT METHOD OF GAIN AND OFFSET - A D.C. offset canceling and gain adjusting techniques permitting completion of correction of D.C. offsets and gain adjustment of amplifiers for amplifying reception signals in a radio communication system are provided. A communication semiconductor integrated circuit has a plurality of low-pass filters and variable gain amplifiers which are alternately connected in multiple stages, and high gain amplifier circuits for amplifying reception signals to a predetermined amplitude level. Offset cancellation values are generated by detecting D.C. offsets of amplifiers for amplifying reception signals according to a set gain, and stored into a memory, and read out of the memory to cancel the D.C. offsets of the amplifiers when starting reception and altering the gain. Gain setting in a high gain amplifying section is accomplished using rough and precise settings. | 2009-03-26 |
20090080578 | PHASE NOISE LIMITING APPARATUS, PHASE NOISE LIMITING METHOD, RECEIVING APPARATUS, RECEIVING METHOD, AND PROGRAMS - Disclosed herein is a phase noise limiting apparatus including a detection section configured to detect a phase noise quantity from an input signal; a determination section configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with the input signal, the determination section determines one of the parameters in keeping with the phase noise quantity detected by the detection section on the basis of one of the plurality of correspondence tables; and a phase noise limitation section configured to limit the phase noise in the input signal based on the parameter determined by the determination section. | 2009-03-26 |
20090080579 | RECEIVING APPARATUS AND METHOD - A receiving apparatus includes a combining and quantizing unit that combines channel vectors corresponding to a combination of a plurality of antennas in order to generate a combination channel vector and selects a predetermined quantization vector according to the generated combination channel vector, an error detecting unit that detects whether there is an error in received signals, and an antenna switchover unit that switches over the combination of the antennas according to a result of the error detection, in which the combining and quantizing unit feeds an index of the selected predetermined quantization vector back to a transmitting apparatus. In this way, diversity effect can be obtained by means of repeat control while reducing the amount of feedback information. | 2009-03-26 |
20090080580 | DIVERSITY RECEIVER - The objective of the present invention is to provide a diversity receiver that detects differences in reception qualities for reception branches, and that controls the starting and halting of a diversity operation in accordance with the difference in the reception qualities, so that power saving is enabled and battery operating periods can be extended. A difference in reception levels (A, B) which are reception qualities for reception branches ( | 2009-03-26 |
20090080581 | TIME SEQUENTIAL PROCESSING OPERATIONS - At least some of the arithmetic operations of a filter or other digital process can be performed time sequentially, which may allow the arithmetic elements for the filter or other digital process to be used multiple times for multiple operations. | 2009-03-26 |
20090080582 | METHOD AND APPARATUS FOR ADJUSTING THE TIMING OF AN ELECTRONIC CIRCUIT - Methods and circuits for detecting variations in signal propagation rates within an electronic device, and for adjusting the output timing of the device in response to the variations in signal propagation rates. According to an embodiment of the invention, a signal may be propagated through an uncompensated delay chain and a compensated delay chain. If the signal passes through the compensated chain slower than through the uncompensated delay chain, then the device may delay a clock signal such that the output timing of the device will remain within the specification parameters. In contrast, if the signal passes through the uncompensated delay chain slower than through the compensated delay chain, the device may not delay the received clock signal such that the output timing of the device will remain within specification parameters. | 2009-03-26 |
20090080583 | ADAPTIVE CONTROL OF CLOCK SPREAD TO MITIGATE RADIO FREQUENCY INTERFERENCE - In some embodiments an adaptive clocking controller determines a clock spread of a system clock that would result in a lowest total interference between a channel received by a radio receiver and the system clock. A clock generator modifies a spread of the system clock in response to the determined clock spread. Other embodiments are described and claimed. | 2009-03-26 |
20090080584 | SEMICONDUCTOR SYSTEM - A semiconductor system has a SerDes circuit for receiving serial data, and a reference SerDes circuit for receiving clock signals running in parallel. The SerDes circuit performs serial to parallel conversion of the serial data captured by the recovery clock whose phase is controlled by utilizing the phase control signal P_CS generated by the reference SerDes circuit. | 2009-03-26 |
20090080585 | Reduced Order Stress Model for Online Maneuvering, Diagnostics of Fuel Failure and Design of Core Loading Patterns of Light Water Reactors - The invention is principally directed to a reduced order model, XEDOR, facilitating the prediction of and the diagnostics of pellet-clad interaction stress-corrosion-cracking failure of nuclear fuel rods. The invention more particularly relates to assessment of susceptibility to PCI failure for guidance in the design of fuel loading in nuclear reactors. The invention additionally relates to the protection against PCI failure by providing operational information to operators of a nuclear reactor during power maneuvering, including predictive calculations prior to executing power maneuvers. Additionally, the invention relates to the diagnostics of an event suggesting a possible PCI cladding failure. | 2009-03-26 |
20090080586 | REACTIVITY CONTROL ROD FOR CORE, CORE OF NUCLEAR REACTOR, NUCLEAR REACTOR AND NUCLEAR POWER PLANT - In a nuclear reactor in which a primary coolant is contained, the primary coolant moves upwardly from the core by an operation thereof. An annular steam generator is arranged in an upper side of the core into which the upwardly moving primary coolant flows and transfers heat in the primary coolant into water therein to generate a steam. A passage structure defines a coolant passage for the primary coolant to an outside of the core. The heat-transferred primary coolant in the annular steam generator flows downwardly in the coolant passage so as to flow into the core, thereby moving upwardly. A reactor vessel is arranged to surround the coolant passage so as to contain the core, the annular steam generator and the passage means therein. | 2009-03-26 |
20090080587 | Nuclear fission igniter - Illustrative embodiments provide nuclear fission igniters for nuclear fission reactors and methods for their operation. Illustrative embodiments and aspects include, without limitation, a nuclear fission igniter configured to ignite a nuclear fission deflagration wave in nuclear fission fuel material, a nuclear fission deflagration wave reactor with a nuclear fission igniter, a method of igniting a nuclear fission deflagration wave, and the like. | 2009-03-26 |
20090080588 | Nuclear fission igniter - Illustrative embodiments provide nuclear fission igniters for nuclear fission reactors and methods for their operation. Illustrative embodiments and aspects include, without limitation, a nuclear fission igniter configured to ignite a nuclear fission deflagration wave in nuclear fission fuel material, a nuclear fission deflagration wave reactor with a nuclear fission igniter, a method of igniting a nuclear fission deflagration wave, and the like. | 2009-03-26 |
20090080589 | CORE CATCHER, MANUFACTURING METHOD THEREOF, REACTOR CONTAINMENT VESSEL AND MANUFACTURING METHOD THEREOF - Core debris generated during a molten reactor core in a reactor containment vessel penetrating the reactor containment vessel is configured to be caught by a core catcher located beneath the reactor containment vessel which has a main body having first stage cooling water channels and second stage surrounded by cooling fins extending radially. The number of the second stage cooling channels is larger than that of the first stage cooling channels. Cooling water is supplied from a cooling water injection opening and distributed to the first cooling water channels at a distributor. An intermediate header is formed between the first and the second cooling water channels, and the cooling water is distributed to the second cooling water channels uniformly. | 2009-03-26 |
20090080590 | METHOD AND APPARATUS TO SHIELD A NUCLEAR FUEL ASSEMBLY WITH REMOVABLE DEBRIS SHIELD IN UPPER TIE - A method to capture, retain and remove debris falling into a nuclear reactor fuel bundle assembly including a bundle of fuel rods mounted below an upper tie plate and housed in a hollow metal channel, the method includes: inserting a debris shield in the upper tie plate; maintaining the shield in the upper tie plate and above the fuel rods, and water rods, while the fuel bundle assembly is in an operating nuclear reactor core; capturing debris falling in the fuel assembly on the debris shield; after capturing the debris, removing the fuel bundle assembly with the inserted debris shield from the nuclear reactor core to a maintenance/fuel inspection pool and thereafter removing the debris shield from the upper tie plate, cleaning and then reinserting the cleaned debris shield back into the upper tie plate, and moving the fuel bundle assembly from the maintenance/fuel inspection pool back into the nuclear reactor core. | 2009-03-26 |
20090080591 | NUCLEAR FUEL PROVIDED WITH A COATING - This invention relates to a method of preparing a nuclear fuel including the step of depositing a coating which includes fluorine, or at least one compound thereof, around a kernel ( | 2009-03-26 |
20090080592 | Swelling-resistant nuclear fuel - A nuclear fuel according to one embodiment includes an assembly of nuclear fuel particles; and continuous open channels defined between at least some of the nuclear fuel particles, wherein the channels are characterized as allowing fission gasses produced in an interior of the assembly to escape from the interior of the assembly to an exterior thereof without causing significant swelling of the assembly. Additional embodiments, including methods, are also presented. | 2009-03-26 |
20090080593 | Shift register - A shift register includes a first node controller disposed at one side of the non-display region, the first node controller controlling a signal state of a first node, at least one pull-up switching device disposed at the one side of the display region, the pull-up switching device outputting an output pulse according to the signal state of the corresponding first node and supplying it to a corresponding gate line, a second node controller disposed at the other side of the display region, the second node controller controlling a signal state of a second node, and a first pull-down switching device disposed at the other side of the display region, the first pull-down switching device outputting a discharging voltage according to the signal state of the second node and supplying it to the other side of the corresponding gate line. | 2009-03-26 |
20090080594 | DEDICATED BREAST RADIATION IMAGING/THERAPY SYSTEM - System, apparatus and methods specialized for breast and related tissue radiation therapy and imaging of a prone patient but also usable for supine patient if desired or needed. A special treatment radiation source such as a LINAC unit generates radiation of types and energy ranges specifically matched to breast tissue. Any one or more of several imaging technologies may be used to localize the tissue to be irradiated and to generate information for therapy planning, adjustment, and verification. | 2009-03-26 |
20090080595 | COMPUTED TOMOGRAPHY SYSTEM - A CT system performing reconstruction processing based on projection-image-data items obtained from a CT apparatus, wherein the CT system performs the reconstruction processing by, for example, distributing opposed projection-image-data items to a submachine as a single set. | 2009-03-26 |
20090080596 | RADIOGRAPHIC EQUIPMENT - The invention concerns radiographic equipment for forming an image of an interior of an object. The equipment comprises a source of X-ray or gamma-ray radiation having two or more energies and operable to irradiate an object to be scanned and a radiation source producing neutrons operable to irradiate the object. The equipment also comprises a radiation detector array having a plurality of pixels, each sensitive to and arranged with respect to the X-ray or gamma-ray radiation source and the neutron producing radiation source and operable to measure the intensity of each type of radiation transmitted through the object; means to process the intensity of each type of radiation, to determine the attenuation of each type of radiation having passed through the object, and to form an image indicative of the shape and composition of the object's interior. | 2009-03-26 |
20090080597 | SYSTEM AND METHOD FOR PERFORMING MATERIAL DECOMPOSITION USING AN OVERDETERMINED SYSTEM OF EQUATIONS - A system and method of a diagnostic imaging system includes an x-ray source that emits a beam of x-rays toward an object to be imaged, a detector that receives x-rays emitted by the x-ray source and attenuated by the object, and a data acquisition system (DAS) operably connected to the detector. A computer is operably connected to the DAS and programmed to obtain a number of measurements of energy-sensitive CT measurements in excess of a number of materials to be resolved, decompose the number of measurements into individual materials as an overdetermined system of equations, and generate an image of the individual materials based on the decomposition. | 2009-03-26 |
20090080598 | BI-PLANE X-RAY IMAGING SYSTEM - A high-speed biplane radiography system for in-vivo assessment of joint function is provided. The system can acquire stereo-pair radiographic images at rates from 30-4000 frames per second of nearly any motion or joint. The radiographic equipment can be mounted in a gantry system that provides sufficient positioning flexibility for imaging different joints of a subject's body, along with an imaging area large enough for a variety of dynamic activities (e.g., walking, running, jumping, throwing, etc.). Three-dimensional (3D) bone positions can be determined using software for matching the bones in each X-ray image with 3D models developed from subject-specific CT (computed tomography) scans. This system can provide accurate (e.g., ±0.1 mm) assessment and direct 3D visualization of dynamic joint function, and can overcome limitations of conventional gate or motion analysis. | 2009-03-26 |
20090080599 | X-RAY COMPUTED TOMOGRAPHIC APPARATUS - An X-ray computed tomographic apparatus includes a rotary frame, a mechanism which rotatably supports the rotary frame, an X-ray tube which is mounted to the rotary frame, an X-ray detector which is mounted to the rotary frame, a plurality of rotor magnets which is arranged in the rotary frame, a plurality of stator coils which is opposed to the rotor magnets, an MR sensor which detects a magnetic-flux variation accompanied by a movement of the rotor magnets, and a position specifying unit which specifies a magnetic-pole position of each rotor magnet with respect to each stator coil on the basis of an output of the MR sensor and a convergence time from a vibration start of the rotary frame caused by a short-time excitation of the stator coil to a vibration stop of the rotary frame. | 2009-03-26 |
20090080600 | PROCESS AND APPARATUS FOR IMAGING - Processes for producing a microCT image for virtual histology using x-ray microscopic computed tomography are described along with processes for rapid and inexpensive high-throughput methods of high resolution imaging for screening an ex vivo embryo for phenotype using computed tomography imaging. Staining of particular components of specimens with one or more staining agents is described which contributes to high quality image generation and identification of anatomical structures as well as localization of molecular targets. Inventive animal and specimen holders are detailed which allow for reduced post-imaging processing of generated images. In particular, animal and specimen holders are provided which include a highly transparent bed or liner which separates the animal or specimen from a less transparent structure. A further animal holder is provided for placing and/or maintaining the animal in a desired position during an imaging procedure or multiple imaging procedures including a bed conforming to the animal's body. | 2009-03-26 |
20090080601 | METHOD AND APPARATUS FOR FLEXIBLY BINNING ENERGY DISCRIMINATING DATA - A CT detector includes a direct conversion material configured to generate electrical charge upon reception of x-rays, a plurality of metallized anodes configured to collect electrical charges generated in the direct conversion material, at least one readout device, and a redistribution layer having a plurality of electrical pathways configured to route the electrical charges from the plurality of metallized anodes to the at least one readout device. A plurality of switches is coupled to the plurality of electrical pathways between the plurality of metallized anodes and the at least one readout device, wherein each of the plurality of switches includes an input line electrically coupled to one of the plurality of metallized anodes, a first output node electrically coupled to the at least one readout device, and a second output node electrically coupled to at least one other switch of the plurality of switches. | 2009-03-26 |
20090080602 | Dedicated breast radiation imaging/therapy system - System, apparatus and methods specialized for breast and related tissue radiation therapy and imaging of a prone patient but also usable for supine patient if desired or needed. A special treatment radiation source such as a LINAC unit generates radiation of types and energy ranges specifically matched to breast tissue. Any one or more of several imaging technologies may be used to localize the tissue to be irradiated and to generate information for therapy planning, adjustment, and verification. | 2009-03-26 |
20090080603 | ONLINE IGRT USING DIGITAL TOMOSYNTHESIS - A system includes movement of a treatment delivering x-ray source to a treatment position, creation of projection images of a target using an imaging x-ray source while the treatment delivering x-ray source is disposed at the treatment position, and performance of digital tomosynthesis on the projection images while the treatment delivering x-ray source is disposed at the treatment position to generate a cross-sectional image of the target. A characteristic of an x-ray beam to be delivered by the treatment delivering x-ray source may be automatically modified based on the cross-sectional image. In some aspects, the imaging x-ray source translates in a plane normal to a beam axis of the treatment delivering x-ray source at the treatment position, and pivots about an axis passing through the imaging x-ray source during creation of projection images. Creation of the projection images may alternatively include emission of a respective x-ray beam from each of a plurality of sources of the imaging x-ray source, wherein the imaging x-ray source is stationary with respect to the treatment delivering x-ray source during creation of the projection images. | 2009-03-26 |
20090080604 | COMPUTED TOMOGRAPHY BREAST IMAGING AND BIOPSY SYSTEM - A prone CT breast x-ray imaging system is described that can image a full breast to create a conventional 2D digital image in very high resolution (e.g. <=25 micron pixels). The system is capable of imaging the entire breast in 3D based on multiple projection views from a 1D or 2D detector. Data can be acquired and reconstructed with a limited number of views from limited angles or with conventional cone beam CT algorithms. The resulting 3D image enables the detection and diagnosis of fine micro calcifications and small masses as may be distributed throughout the breast, thus allowing radiologists to make an improved determination of malignancy as opposed to conventional 2D digital mammography. In addition, the injection of intravenous contrast in conjunction with or without pre and post contrast subtraction imaging provides a radiologist with morphologic information on the existing tumor burden in the breast. This capability may obviate the need for an independent contrast MRI exam of the breast which is increasingly performed for local staging and determination of tumor extent in a patient with a known cancer. Integrated biopsy capability permits convenient and rapid biopsy of any area suspicious for malignancy. | 2009-03-26 |
20090080605 | RADIATION IMAGE CAPTURING APPARATUS - An image capturing base that contains a radiation detector includes a housing having a slit serving as an air inlet port formed in the front end side of the housing, which is to be located adjacent to the chest wall of a subject, and a slit serving as an air outlet port formed in the rear end side of the housing adjacent to a pivot shaft. A fan forces air to flow into the housing through the slit, along a detection surface of the radiation detector in a direction from the front end side toward the rear end side, and out of the housing through the slit. | 2009-03-26 |
20090080606 | RADIATION IMAGE CAPTURING APPARATUS - A radiation image capturing apparatus includes a housing for housing a radiation detector. The housing has a wall inclined with respect to a detection surface of the radiation detector, and the wall defines a space inclined with respect to the detection surface. The space allows heat transfer medium such as air of relatively high temperatures (higher than that of outside air, for example) to rise along a slope defined by the space. If the region around the detection surface is heated to high temperatures, airflow is generated within the space, forcing the relatively high-temperature heat transfer medium away from the vicinity of the radiation detector, thereby allowing the whole radiation detector to be cooled in a uniform manner. | 2009-03-26 |
20090080607 | DEVICE AND PROCESS FOR FAT ANALYSIS - Meat processing device having at least one comminution unit for comminution and/or mixing of fresh and/or frozen meat and having at least one transport means ( | 2009-03-26 |