Pulse or digital communications inventions 10/06

20060239333 - Wireless communication system and related methods: A method of operating a wireless mesh network comprises generating a pseudorandom sequence element in a transmitting device and a receiving device of the network using information shared by the transmitting and receiving devices. The pseudorandom sequence element is then used to calculate a communication channel/timeslot assignment for communication between...

20060239334 - Digital communication method and system: This invention is concerned with a transmission control method and apparatus in a collision interval for a collision of multidimensional hopping patterns. In the present invention, each orthogonal wireless resource in the coordinate of the multidimensional orthogonal resource can hop according to the hopping pattern negotiated between a transmitter and...

20060239335 - Method for using a non-orthogonal pilot signal with data channel interference cancellation: A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the...

20060239336 - Method and apparatus for compressive imaging device: A new digital image/video camera that directly acquires random projections of the incident light field without first collecting the pixels/voxels. In one preferred embodiment, the camera employs a digital micromirror array to perform optical calculations of linear projections of an image onto pseudorandom binary patterns. Its hallmarks include the ability...

20060239337 - Digital interface and related event manager for integrated circuits: In one embodiment, the present invention includes a method for receiving at a transceiver from a baseband processor digital control information that includes both event and schedule information, storing the digital control information in a storage of the transceiver, and operating the transceiver according to the event and schedule information....

20060239338 - Modulation feature measurement and statistical classification system and method: A modulation feature measurement and classification system for classifying a pulsed signal that includes a preprocessor, phase measurement system and modulation classifier. Preprocessor detects pulse starts and stops, measures pulse duration and converts the pulsed signal into digitized baseband in-phase/quadrature samples. Phase measurement system measures short chip counts, long chip...

20060239339 - Cir estimating decision feedback equalizer with phase tracker: An output of an equalizer is decoded to produce first decoded data having a first accuracy. The output of the equalizer is further decoded to produce second decoded data having a second accuracy, and the second accuracy is greater than the first accuracy. Tap weights for the equalizer are calculated...

20060239340 - Measurement of equalizer span alignment with respect to channel condition: The span of a linear transversal equalizer filter moves according to the current positions of the multi-paths to a receiver. The alignment of the filter span is measured quantitatively with respect to the current positions of the multi-paths. Adjustments are made to the filter span to enable the linear transversal...

20060239342 - Cir estimating decision feedback equalizer with phase tracker: An equalizer system includes an equalizer, first and second decoders, and a tap weight controller. The equalizer equalizes a received signal to provide an equalizer output. The first decoder is characterized by a first parallel output, and the first decoder decodes the equalizer output to provide first symbol decisions having...

20060239341 - Continuous-time decision feedback equalizer: A continuous-time domain Decision Feedback Equalizer (DFE) for use in a serial communication channel comprises in one embodiment a summer, a decision circuit, a capture flip-flop (FF) and an N-th order active filter. The DFE and its active filter operate in continuous time to give improved performance over a discrete-time...

20060239343 - Method and system for parallel processing video data: Described herein is a method and system for parallel processing video data. The system having parallel encoder devices can create a balance between quality of service and delay. In order to maintain quality, compression parameters in a group of pictures can be produced by one encoder device and used by...

20060239344 - Method and system for rate control in a video encoder: Described herein is a method and system for rate control in a video encoder. The method and system can use relative persistence and intensity of video data in a macroblock to classify that macroblock. On a relative basis, a greater number of bits can be allocated to persistent video data...

20060239345 - Method of signalling motion information for efficient scalable video compression: A method for incrementally coding and signalling motion information for a video compression system involving a motion adaptive transform and embedded coding of transformed video samples comprises the steps of: (a) producing an embedded bit-stream, representing each motion field in coarse to fine fashion; and (b) interleaving incremental contributions from...

20060239346 - Picture encoding device: Separating means 11 separates a picture signal into a reference signal and one or more signals to be predicted. A reference signal including a quantization error is outputted from inverse converting means 18. Predicting means 14 estimates one or more prediction coefficients for approximating the signal to be predicted based...

20060239349 - Image coding unit and image coding method: An image coding unit and an image coding method which assure high speed and high image quality with a simple structure. For coding plural sub macroblocks into which a macroblock to be coded is divided, plural types of virtual predicted image data are generated using target image data to be...

20060239348 - Method and system for encoding video data: Described herein is a method and system for encoding video data. The design comprises a two pass encoding system with bi-direction control to and from a classification engine. In the first pass coder, a future picture is encoded to produce a set of parameters that characterize the future picture. In...

20060239347 - Method and system for scene change detection in a video encoder: Described herein is a method and system for rate estimation in a video encoder. The method and system use a motion estimation metric to determine the position of a scene change. The average of the motion estimation metric is computed for a set of pictures. When change in the motion...

20060239350 - Picture coding method and picture decoding method: A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded...

20060239351 - Picture coding method and picture decoding method: A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded...

20060239352 - Picture coding method and picture decoding method: A picture coding apparatus (300) is a picture coding apparatus that codes a difference between picture data (Img) representing an input picture and predictive picture data (Pred) representing a predictive picture for the input picture and generates coded picture data, and includes a picture decoding unit (104) for decoding coded...

20060239353 - Biased motion vector interpolation for reduced video artifacts: In a video processing system where motion vectors are estimated for a subset of the blocks of data forming a video frame, and motion vectors are interpolated for the remainder of the blocks of the frame, a method includes determining, for at least at least one block of the current...

20060239356 - Inter-frame predicted image synthesizing method: A method and apparatus for simplifying an operation for the processing of a warping prediction of dividing an image into patches and deforming each patch by affine transform or bilinear transform. Motion vectors of a plurality of representative points in which a spatial interval has a special feature are obtained...

20060239355 - Optimal encoding of motion compensated video: Both distortion rate and bit-rate can be considered together when selecting a lowest cost motion estimation signal. A motion estimation signal is generated for each of the candidate motion vectors and candidate mode information vectors for a macroblock. An estimated amount of encoding bits is determined for each of the...

20060239354 - Video decoding device, video decoding method, video decoding program, and video decoding integrated circuit: With use of a simplified program or calculating device for motion compensation, a video decoding device decodes video data compressed by motion detection operations on macroblock units, as in the MPEG-4AVC standard. The video decoding device splits compressed data blocks of the prescribed size, 16×16 pixels for instance, to generate...

20060239357 - Search algorithms for using related decode and display timelines: A sequence of video images represented using multiple related timelines can be searched by identifying a first point on a first timeline associated with the sequence of video images, wherein the sequence of video images is comprised of one or more samples, determining a search range on a second timeline...

20060239358 - Coding method for moving picture: The present invention relates to a method for coding a moving picture in a moving picture coding system using multiple reference picture. According to the method for coding an interlaced moving picture into a frame picture having frame/field macroblock, a reference picture index of the frame macroblock is determined at...

20060239359 - System, method, and apparatus for pause and picture advance: Presented herein is a system and method for pause and picture advance. In one embodiment, there is presented a method for displaying pictures. The method comprises displaying a first picture at a first vertical synchronization signal; receiving a particular input between the first vertical synchronization signal and a second vertical...

20060239360 - Coding distortion removal method, video encoding method, video decoding method, and apparatus and program for the same: Mosaic-shaped block noise occurs when a compressed video signal is reproduced. This block noise is removed, but removing block noise from every block using a deblocking filter imposes a significant load on the deblocking filter. This load is therefore reduced by determining whether coding distortion removal (deblocking) is necessary, and...

20060239361 - Prefilter, compressive coding pre-processing apparatus and decompressive decoding post-processing apparatus, and compressive coding apparatus and decompressive decoding apparatus: A prefilter for use in a compressive coding apparatus, the compressive coding apparatus including the prefilter for limiting a frequency band of an input image and a compressive coding unit for implementing compressive coding of an image signal of which frequency band is limited with the prefilter, the prefilter includes:...

20060239363 - Method for providing service and rate negotiation in a mobile communication system: A method and apparatus for negotiating service configuration in a digital communication system is disclosed. In an exemplary embodiment the service negotiation system is implemented in a wireless spread spectrum communication system. The service configuration comprises data rates, frame formats and types of services. Types of service may include speech...

20060239362 - Transmitting and receiving arrangement with a channel-oriented link: A transmitting and receiving arrangement as well as a method for transmission of monitoring and/or payload data in a transmitting and receiving arrangement for a wirefree communications system has a device which processes baseband for processing digital signals to form a baseband signal and a device which processes radio frequency...

20060239368 - Apparatus and method for estimating frequency offset in orthogonal frequency division multiplexing system: An apparatus and method for estimating a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided. Two time domain signals are generated from one received OFDM symbol through two observation windows with different delay times. The two time domain signals are compensated for a candidate frequency offset....

20060239364 - Doppler spread estimation for ofdm systems: A Doppler spread value of a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is estimated, wherein the channel comprises a plurality of carrier frequencies. Estimating involves selecting a set of two or more carrier frequencies from the plurality of carrier frequencies. A Doppler spread value is estimated for...

20060239367 - Low complexity inter-carrier interference cancellation: Inter-carrier interference (ICI) in a kth sub-carrier of an orthogonal frequency division multiplexing (OFDM) signal received at time t is reduced, wherein the received OFDM signal comprises a plurality of sub-carriers. This is achieved by generating a self-interference term, ICIk−L,k−L, for a signal received on sub-carrier k−L, wherein L ε...

20060239365 - Method and system for hierarchical modulation and demodulation for digital radio: A communication system (10) using hierarchical modulation includes at least one satellite (12 & 13) transmitting a data stream and a hierarchical modulated data stream, and at least one terrestrial station (16) transmitting the data stream and the hierarchical modulated data stream. The communication system can further include at least...

20060239369 - Methods and systems for transmission channel drlrction in wireless communication: A channel selection method applied at wireless communication. A transmitter selects a first transmission channel to carry test pattern. A receiver receives and compares the test pattern with stored data, and calculates a first signal quality. When the first signal quality exceeds a target value, the receiver sets the first...

20060239366 - Rf transceiver having adaptive modulation: A modulation control module for use in an RF transceiver, the modulation control module includes a processing module and memory. The memory is operably coupled to the processing module, wherein the memory stores operational instructions that causes the processing module to: receive a multiple path channel estimation; and determining, for...

20060239370 - Time and frequency synchronization in multi-input, multi-output (mimo) systems: In a communication system, and in particular a wireless Orthogonal Frequency Division Multiplexing (OFDM) communication system, the present invention provides systems for synchronizing data transmitted across a channel. The present invention may be used in a Multi-Input, Multi-Output (IMO) system in which the data is transmitted from any number of...

20060239371 - Multiple-access code generation: Multiple-access codes are generated using an asymptotically optimal decoding algorithm, such as the Viterbi algorithm. A trellis may be constructed using a number of desired users, at least one code length, and a number of code-chip parameters. A fitness function is derived from a mathematical relationship between the multiple-access codes,...

20060239375 - Adaptive modulation in a multiple input multiple output wireless communication system with optional beamforming: A transmitting MIMO wireless device transmits a training sequence to a receiving MIMO wireless device. The receiving MIMO wireless device estimates a channel response based upon the training sequence, determines an estimated transmitter beamforming unitary matrix and a transmit path quality matrix, and then transmits some/all of these parameters to...

20060239373 - Beamforming in a wireless communication with a partial estimation to reduce overhead: A method for beamforming in a wireless communication begins by receiving a baseband signal. The method continues by receiving a feedback signal that includes a subset of angles, wherein a set of angles provide polar coordinates for a unitary matrix and wherein the subset of angles is a subset of...

20060239374 - Efficient feedback of channel information in a closed loop beamforming wireless communication system: A method for feeding back transmitter beamforming information from a receiving wireless communication device to a transmitting wireless communication device includes a receiving wireless communication device receiving a preamble sequence from the transmitting wireless device. The receiving wireless device estimates a channel response based upon the preamble sequence and then...

20060239372 - Reduced feedback for beamforming in a wireless communication: A method for reduced feedback for beamforming in a wireless communication begins by receiving a baseband signal. The method continues by digitally beamforming the baseband signal using a unitary matrix having polar coordinates....

20060239376 - Methods and apparatus for providing linear erasure codes: Methods and apparatus for providing linear erasure codes. In one aspect, a method is provided for encoding a set of data values into a code symbol. The method includes determining an index sequence that defines selected data values to be used to generate the code symbol, and determining a value...

20060239379 - Method and apparatus for assigning addresses to components in a control system: The invention relates to a method and an apparatus for remotely controlling device, more particularly to a system and method for controlling locomotives in a railway environment using radio frequency signals. This invention makes use of a remote operator programming unit (OPP) to set address information in the transmitter unit...

20060239378 - Method and apparatus for determining transmitter identification information in terrestrial digital multimedia broadcasting system: An apparatus and method are provided for determining transmitter identification information (TII) in terrestrial digital multimedia broadcasting (T-DMB) system. The TII is detected by determining whether the TII occurs during the slot for a null symbol. The detected TII is stored into a TII database preferably continuously until a point...

20060239377 - Systems, methods, and apparatus for reducing dynamic range requirements of a power amplifier in a wireless device: Systems, methods, and apparatus for reducing dynamic range requirements of a power amplifier in a wireless device are provided. An exemplary method may include modulating a symbol stream to generate a modulated waveform. The exemplary method may further include generating at least one pulse having a peak aligned with an...

20060239380 - Power control system for a continuous time mobile transmitter: Power control circuitry is provided for controlling an output power of a transmitter of a mobile terminal operating according to a continuous time transmit scheme such as Wideband Code Division Multiple Access (WCDMA). Transmit circuitry processes a quadrature baseband signal to provide a radio frequency transmit signal. The radio frequency...

20060239381 - Methods and apparatus for robust and low-complexity qam modulation: The present invention provides low complexity methods and apparatus for improving the performance of conventional QAM modulations. These methods provide (a) larger noise margins than conventional constellations and/or (b) improved labeling schemes. Additionally, the invention provides fixed-print approximations of these constellations to allow for low complexity VLST implementations of these...

20060239382 - Adaptive direct conversion receiver: A method and apparatus is disclosed for improving performance of a communication receiver. An exemplary method comprises calculating a rate of error associated with a received signal at a first time; comparing the rate of error at the first time to a first threshold rate of error; if the rate...

20060239383 - Multi-channel receiver, digital edge tuning circuit and method thereof: A multi-channel receiver, digital edge tuning circuit and a method for operating the same is disclosed. The digital edge tuning circuit for tuning phases of an input signal and a clock signal, comprises a delay-tuning circuit for receiving the input signal and delaying the input signal to generate a fine-tuned...

20060239384 - Wideband phase shift device: The invention relates to a wideband phase shift device. A phase shift φ is introduced on the fixed frequency local oscillator. The principle of the invention is to realise a double translation of the input signals. The phase variation introduced at the level of the local oscillator has a positive...

20060239385 - Method for analysing the channel impluse response of a transmission channel: A method is provided for analyzing the channel impulse response of a transmission channel using a time-discrete adaptive equalizer connected in series to the transmission channel, which it equalizes. The method includes determining the IIR filter coefficients (an) of a recursive filter portion and the FIR filter coefficients (bn) of...

20060239386 - Numerical controller: A numerical controller capable of operating an auxiliary function at a target time or spindle position in performing operation based on table format data. An auxiliary function table is stored with auxiliary function commands M to be outputted corresponding to commanded reference times Lc and their corresponding operation delay times...

20060239387 - Digital reception apparatus: A digital reception apparatus includes a receiver that performs reception processing on a received signal and an adjuster that adjusts the amplitude of the received signal after the reception processing. A distortion estimator estimates a non-linear distortion of the received signal after the reception processing, the non-linear distortion being caused...

20060239388 - Dc offset detection and cancellation in a receiver: A DC offset detection and cancellation system for a receiver is disclosed. The DC offset detection and cancellation system comprises a downconverter configured to downconvert a received signal to a baseband level signal, the downconverted signal having a first sampling rate, a filter system configured to filter the downconverted received...

20060239389 - Frequency interference detection and correction: A system for detecting and correcting for spurious frequencies that may coincide in a bandwidth of interest in an RF metrology system. The system can (1) utilize a deterministic scheme to detect an interference by a spurious frequency and correct the distortion effect or (2) utilize a mixed signal processing...

20060239390 - Adaptive noise filtering and equalization for optimal high speed multilevel signal decoding: A Signal Conditioning Filter (SCF) and a Signal Integrity Unit (SIU) address the coupled problem of equalization and noise filtering in order to improve signal fidelity for decoding. Specifically, a received signal can be filtered in a manner to optimize the signal fidelity even in the presence of both significant...

20060239391 - Evaluating base station timing in an asynchronous network: The present invention provides a method of wireless communication with at least one mobile unit and at least two base stations. The method includes determining a phase difference between at least two timing signals associated with said at least two base stations based upon timing information provided by said at...

20060239392 - Asynchronous system-on-a-chip interconnect: Methods and apparatus are described relating to a system-on-a-chip which includes a plurality of synchronous modules, each synchronous module having an associated clock domain characterized by a data rate, the data rates comprising a plurality of different data rates. The system-on-a-chip also includes a plurality of clock domain converters. Each...

20060239393 - Method and apparatus for providing synchronization in a communication system: A dual loop, clock synchronization circuit for a receiver in a communication system. The circuitry uses a first loop of a digital phase lock loop for coarse synchronization to time stamps within the received data and uses a second loop for fine synchronization of a second numerically controlled oscillator....

20060233220 - Wireless telephone with spectral spread in sampled voice: A cordless telephone handset and a cordless telephone base station both comprise a transmitter unit and a receiver unit is presented whereby the communication between said handset and said base station is established over a radio link utilizing an analogue based spread spectrum communication technique whereby at the transmitter unit...

20060233223 - Communication system with receivers employing generalized two-stage data estimation: A wireless transmit/receive unit (WTRU) is configure to receive and sample wireless signals in a shared spectrum where the wireless signal comprise encoded symbols. The WTRU has a channel estimation device configured to process received signal samples to produce an estimate of a channel response of the received signals corresponding...

20060233221 - Multi-antenna solution for mobile handset: A mobile terminal with multi-antenna (200) based on CDMA, comprises a plurality of groups of radio frequency signal processing modules (202), for transforming received multi-channel radio frequency signals based on CDMA to multi-channel baseband signals; a multi-antenna module (206), for combining said multi-channel baseband signals output from the plurality of...

20060233222 - Sir prediction method and apparatus: The present invention provides a method and apparatus for generating SIR estimates early in a time interval that include the benefits of interference suppression without requiring the computation of specific interference suppression elements. In particular, the present invention generates an SIR estimate for a RAKE receiver during a current time...

20060233224 - Adaptive pilot interference cancellation in cdma systems: A system and method for interference reduction in a spread spectrum receiver including a rake receiver having a plurality of fingers for processing a plurality of data signals and an associated plurality of pilot signals is disclosed herein. The method includes generating a plurality of intra-finger interference cancellation signals using...

20060233225 - Frequency synchronization apparatus and frequency synchronization method: A first frequency synchronization unit (103) corresponds to the frequency synchronization apparatus of the present invention. A higher apparatus that is, for example, a wireless receiver supplies a reception signal to the first frequency synchronization unit (103) via an A/D converter (101) and an orthogonal detector (102). A synchronization symbol...

20060233226 - Method and apparatus for cell search in a w-cdma system: A technique is provided for correcting frequency offset during the cell search process in a W-CDMA system. A plurality of control words are defined, and with each of the control words, correlating the received slot signals with the primary synchronization code to generate a correlation result. A correlation peak is...

20060233227 - Systems and methods for a multi-carrier transceiver with radio frequency interference reduction: A multi-carrier information transceiver that exhibits robustness against radio frequency interference (RFI) signals present in the communications channel. The transceiver includes a RFI mitigation technique that operates not only during the steady state operation of the transceiver but also during the training stage of the transceiver. That requires dynamically modifying...

20060233228 - Modem testing system and method: A modem testing system is provided for testing interoperability of plural items of customer premises equipment (CPEs) (10) and plural central offices (COs) (60). The modem testing system includes a line simulator (50), a switch (40), and a controller (30). The line simulator is connected to the CPEs and COs...

20060233230 - Equalization apparatus and equalization method: An equalization apparatus and equalization method capable of reducing power consumption and minimizing degradation in reception performance even when changes occur in the reception environment. Channel response estimator 101 estimates a channel response from a reference signal and a received signal and outputs the result to control circuit 102. In...

20060233229 - Reconfigurable communications circuit: A communications circuit can operate in a first mode, such as a diversity mode including space time transmit diversity (STTD). In this mode, a number of equalizer filter portions connected to a number of post-equalizer processors are employed. When the diversity mode is not required, the extra equalizer filter portions...

20060233231 - Method and circuit for equalizing and compensating iq imbalance simultaneously: The present invention provides a method and circuit for equalizing and compensating IQ imbalance at the same time. The method includes: down-converting an RF signal to generate a baseband signal, and driving an adaptive equalizer to process the baseband signal for achieving equalization and IQ imbalance compensation simultaneously....

20060233232 - Pulse width modulation generating circuit: A pulse width modulation (PWM) generating circuit includes a first comparator, a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, and a diode. The first resistor and the second resistor are connected in series between a voltage input and ground. The third resistor, the fourth...

20060233233 - Method and device for receiving or transmitting a signal with encoded data: A method of providing encoded data can include receiving a datum. Responsive thereto, the datum can be encoded into a waveform pulse to reflect a position and phase corresponding thereto. A signal can be output with the waveform. A method of demodulating encoded data can include receiving a signal. Responsive...

20060233234 - Tri-state pulse density modulator: A tri-state pulse density modulator includes a first switch device coupled to a high voltage, and a second switch device coupled to a low voltage. An adder receives a pulse density modulation (PDM) input signal and a latched input signal to generate an output sum signal and a carry signal....

20060233240 - Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency and video coding and decoding methods and apparatuses using the same: Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency using the same are provided. The context-based adaptive arithmetic coding method includes resetting a context model for the given slice to a context model for a slice coded temporally before the given slice, arithmetically encoding a data...

20060233239 - Method and apparatus for error recovery using intra-slice resynchronization points: A method of video coding that includes encoding resynchronization point information, where the resynchronization point information includes information identifying a location of a resynchronization point within a section of a video bitstream and information for decoding the bitstream following the resynchronization point. Also, a method for decoding digital video that...

20060233238 - Method and system for rate estimation in a video encoder: Described herein is a method and system for rate estimation in a video encoder. The method and system use estimation metrics that can also be part of motion estimation and spatial prediction. A rate controller may utilize the system for rate estimation in two ways. The rate controller may supply...

20060233236 - Scene-by-scene digital video processing: A scene-by-scene (S×S) compression process enables improved visual quality within applicable compression constraints to be obtained. A compressed video signal is analyzed, generating compression statistics. A scene of the video signal is identified for re-compression and a maximum target bit rate for re-compressing the identified scene is determined based on...

20060233237 - Single pass constrained constant bit-rate encoding: Data, such as video data, is encoded by identifying a data segment to be encoded. The data segment includes multiple frames. A bit-rate profile for encoding the data segment is generated. The bit-rate profile defines a number of bits associated with each frame in the data segment. Frames are encoded...

20060233242 - Coding of frame number in scalable video coding: A method of encoding scalable video data having multiple layers where each layer in the multiple layers is associated with at least one other layer includes identifying one or more layers using a first identifier where the first identifier indicates decoding dependency, and identifying reference pictures within the identified one...

20060233241 - Fgs identification in scalable video coding: A system and method for providing improved FGS identification in scalable video coding. According to the present invention, each FGS enhancement layer is assigned a unique dependency identifier and contains only FGS enhancement information. For subsequent enhancement layers, the base dependency identifier for the subsequent enhancement layers will point to...

20060233243 - Fgs identification in scalable video coding: A system and method for providing improved FGS identification in scalable video coding. According to the present invention, each FGS enhancement layer is assigned a unique dependency identifier and contains only FGS enhancement information. For subsequent enhancement layers, the base dependency identifier will point to either a base-quality layer or...

20060233235 - Video encoding/decoding apparatus and method capable of minimizing random access delay: Video encoding and decoding apparatuses and methods capable of minimizing a random access delay are provided. The video encoding apparatus includes an encoding control unit which sets an intra frame (I-frame) interval of a base layer shorter than an I-frame interval of an enhancement layer, a base layer encoding unit...

20060233248 - Capture, editing and encoding of motion pictures encoded with repeating fields or frames: An image sequence captured at a first image rate is encoded as an encoded image sequence at a second image rate with information in the encoded image sequence indicative of images that are repeated when decoded. To assist in editing a video program using the encoded image sequence, the information...

20060233250 - Method and apparatus for encoding and decoding video signals in intra-base-layer prediction mode by selectively applying intra-coding: A method and apparatus for encoding and decoding macroblocks in an intra-base layer prediction mode by selectively applying intra-coding are provided. The method includes the steps of calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals, converting the...

20060233246 - Method and apparatus for encoding, transmitting, and decoding a video signal: In one embodiment of a method of decoding a video signal, at least a portion of a picture in a first picture sequence layer is decoded based on a second picture sequence layer if an indicator in the video signal indicates inter-layer prediction coding....

20060233249 - Method and apparatus for encoding/decoding video signal using reference pictures: In the method for decoding a video signal, at least a portion of a current image in a current layer is predicted based on at least a portion of a reference image and offset information. The offset information may indicate a position offset between at least one boundary pixel of...

20060233244 - Method and system for detecting weak or invalid signals in data streams: There is provided a method for detecting signal conditions for Motion Picture Experts Group (MPEG) streams. Alternate-mode flags and valid frames within the MPEG streams are detected within a pre-defined search window. An indication that a valid signal is detected is output, when an alternate-mode flag and at least one...

20060233251 - Moving picture coding/decoding method and apparatus: A moving picture coding/decoding method and apparatus with improved coding efficiency. A moving picture coding method includes selecting a color space from among a plurality of color spaces, selecting a prediction mode to be commonly applied to all the color components constituting the selected color space, generating first residual data...

20060233245 - Selective reencoding for gop conformity: Systems and methods for editing and selectively encoding video. In general, in one implementation, the method includes generating video segments from portions of one or more video sources, at least one video source being encoded to have interframe dependencies; generating a video sequence from the video segments; scanning the generated...

20060233247 - Storing svc streams in the avc file format: A system and method of coding (encoding and/or decoding) video content to extend file formats for storage. The system and method utilizes the concept to define additional sample group description entries. By way of example the method can comprise the steps of: (1) receiving a file with encoded media data...

20060233253 - Interpolated frame deblocking operation for frame rate up conversion applications: A method and apparatus to enhance the quality of interpolated video, constructed from decompressed video data, comprising denoising the interpolated video data, is described. A low pass filter is used to filter the interpolated video data. In one embodiment, the level of filtering of the low pass filter is determined...

20060233254 - Method and apparatus for adaptively selecting context model for entropy coding: A method and apparatus for adaptively selecting a context model for entropy coding and a video decoder are provided. A method of coding a residual prediction flag indicating whether residual data for an enhancement layer block of a multi-layered video signal is predicted from residual data for a lower layer...

20060233252 - Reduced resolution video decode: A video signal can be decoded at a reduced resolution by receiving a video signal encoded at a first resolution; determining a second resolution at which the received video signal is to be decoded, wherein the second resolution is lower than the first resolution; and decoding the received video signal...

20060233255 - Fine granularity scalability (fgs) coding efficiency enhancements: Scalable video coding techniques include encoding blocks by scan position within a coding cycle in decreasing order to increase the probability of the next symbol will be non-zero. When truncating a fine granularity singularity (FGS) slice, instead of removing a constant fraction of every slice, the fraction is a truncation...

20060233257 - Compression and decompression with wavelet style and binary style including quantization by device-dependent parser: A compression and decompression system in which a reversible wavelet filter are used to generates coefficients from input data, such as image data. The reversible wavelet filter is an efficient transform implemented with integer arithmetic that has exact reconstruction. The present invention uses the reversible wavelet filter in a lossless...

20060233256 - Method for encoding and/or decoding groups of images: The present invention relates to a method of coding and/or decoding groups of pictures. According to the invention, during the temporal decomposition of a stream of pictures within the framework of 3D wavelet processing, the number of pictures, the choice of the reference picture and the direction of temporal decomposition...

20060233258 - Scalable motion estimation: A number of features allow scaling complexity of motion estimation. These features are used alone or in combination with other features. A variable number of search seeds in a downsampled domain are searched in a reference frame dependent upon desirable complexity. A zero motion threshold value eliminates some searches in...

20060233259 - Switching decode resolution during video decoding: The decode resolution of a video signal can be varied during decoding by decoding a first portion of a video signal at a first resolution; determining a second resolution, different from the first resolution, at which a second portion of the video signal is to be decoded; adjusting one or...

20060233260 - Methods for adaptively selecting entropy encoding modes: The presently preferred methods of the present invention take advantage of the syntax structure of H.264 and adaptively switch the entropy coding mode between CABAC and CAVLC. In those profiles of H.264 where CABAC is supported such as the Main profile and the High profiles (HP, Hi10, Hi422, Hi444), the...

20060233261 - Video encoding and video/audio/data multiplexing device: The present invention provides a buffer architecture and latency reduction mechanism for buffering uncompressed/compressed information. This combination provides for a proficient division of the encoding task and quicker through-put time. The invention teaches a single chip digital signal processing device for real time video/audio compression comprising a plurality of processors,...

20060233263 - Method and apparatus for decoding video signal using reference pictures: In the method for decoding a video signal, at least a portion of a current image in a current layer is predicted based on at least a portion of a reference image, offset information and dimension information. The offset information may indicate a position offset between at least one boundary...

20060233262 - Signaling of bit stream ordering in scalable video coding: The ordering of iterations within a video bit stream can be specified by an added syntax element. Changing the order of iteration can improve the ability to extract certain constituent elements of the video coding. In one embodiment, a method of decoding scalable video data having multiple dimensions of scalability...

20060233264 - Bidirectional buffered interface for crosspoint switch: A bidirectional crosspoint switch interface employs a pair of backward-connected transimpedance amplifiers of the type disclosed in the U.S. Patent to L. Enriquez, U.S. Pat. No. 6,411,163, and associated scaling current mirrors that drive nodes of associated reverse signal cancellation circuits. The reverse signal cancellation circuits are coupled to respective...

20060233266 - Content processing device, content transmitting device, content receiving device, content distribution system, content synchronization program, and recording medium: On a transmission-side, a time information generating section generates transmission-side time information based on information about a characteristic point in a waveform of an AC voltage supplied from an AC power supply. The content processing section adds the transmission-side time information to predetermined content. The communicating section transmits, to another...

20060233265 - Joint feed-forward and feedback design for wireless communication systems: A first method comprises determining a condition of a buffer in a transmitter; using the condition, determining information corresponding to the condition; and communicating the information to a receiver. A second method is disclosed comprising receiving first information corresponding to a condition of a buffer in a transmitter; determining channel...

20060233267 - Radio frequency communications systems and methods employing single and multiple sinewave modulation and demodulation techniques: A method for generating a substantially sinusoidal waveform containing encoded digital data having one of a first value and a second value at selected phase angles θn comprises generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of regions having a range...

20060233268 - Channel estimation using a minimized channel prediction interval: A receiver configured for: a) receiving (410) a first OFDM symbol and generating a plurality of demodulated symbols for the first OFDM symbol; b) generating (420) decoder output code symbols corresponding to a subset of the plurality of demodulated symbols; c) determining (430) that a set of the decoder output...

20060233272 - Feedback and scheduling schemes for a communications system: The present invention provides a transmitter. In one embodiment, the transmitter includes a coefficient circuit configured to generate coefficients of a set of basis waveforms that represent channel quality metrics and a transmit circuit that transmits the coefficients. The present invention also provides a receiver. In one embodiment, the receiver...

20060233271 - Method and apparatus for channel estimation in distributed transmit diversity systems: A distributed transmit diversity system based on OFDM signaling transmits a broadcast/multicast service signal from one or more first base stations and from one or more second base stations, wherein the first and second base stations transmit orthogonalized pilots. Correspondingly, a remote receiver, e.g., a mobile station, resolves the orthogonal...

20060233270 - Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in ofdma system having smart antenna: Provided are a method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in an Orthogonal Frequency Division Multiple Access System (OFDMA) having a smart antenna. The inventive method comprises the steps of receiving and storing training symbols in the time domain transmitted to estimate an antenna...

20060233269 - Method of determining the location of the fft window and the delay spread for the platinum broadcast channel estimator: In one embodiment, the invention comprises a channel estimation method, comprising determining a FFT window position, and calculating a delay spread. In another embodiment, the step of determining a FE window position comprises setting an initial position of the FFT window, computing an energy for each tap, time averaging said...

20060233273 - Multicarrier transmission system with low power sleep mode and rapid-on capability: A muticarrier transceiver is provided with a sleep mode in which it idles with reduced power consumption when it is not needed to transmit or receive data. The full transmission and reception capabilities of the transceiver are quickly restored when needed, without requiring the full (and time-consuming) initialization commonly needed...

20060233275 - Distributed transmit diversity in a wireless communication network: A wireless communication network is configured to provide distributed diversity transmissions, wherein different diversity-coded versions of the same information signal are transmitted from each of two or more network sectors. The diversity-coded versions of the information signal are based on space-time or space-frequency codes, and the information signal may comprise...

20060233277 - Method and apparatus for multi-sector transmission in a wireless communication network: According to transmission control as taught herein, a transmission control system is configured for controlling the transmission of data via two or more data streams to a subscriber in a wireless communication network. In one or more embodiments, the transmission control system comprises a first control circuit to evaluate performance...

20060233274 - Method for the multiple-antennae emission of a signal by unitary space-time codes, receiving method, and corresponding signal: An embodiment of the invention relates to a method for sending a signal formed by successive vectors each comprising N symbols to be sent, and implementing at least two transmitter antennas. A distinct sub-matrix is associated with each of said antennas, said sub-matrices being obtained by subdivision of a unitary...

20060233276 - Spatial modulation in a wireless communications network: A signal (e.g., a UWB signal) is generated that conveys a first information sequence. This generation may employ various modulation techniques, such as OFDM and DSSS. To further convey a second information sequence, this signal is spatially modulated. Then, the signal may be transmitted to a remote device. Accordingly, this...

20060233278 - Method and apparatus for generating multi-level reference voltage in systems using equalization or crosstalk cancellation: A system and method are shown for generation of at least one reference voltage level in a bus system. A reference voltage generator on a current driver includes at least one reference voltage level, at least one control signal, and an active device. The active device is coupled to the...

20060233279 - System and method of adjusting output voltage of a transmitter based on error rate: In accordance with an embodiment of the invention, a system comprises control logic and a transmitter. The transmitter is operatively coupled to the control logic and has an output voltage. The control logic adjusts a magnitude of the output voltage based on an error rate associated with the transmitter....

20060233281 - Method and/or system for space-time encoding and/or decoding: Embodiments of methods, apparatuses, devices and/or systems for transmitting information in a communication channel are disclosed....

20060233280 - Selection of channel coding and multidimensional interleaving schemes for improved performance: One or more radio characteristics are considered to determine selection of one or more of the following: interleaving scheme, channel coding scheme, modulation scheme, and/or transmission scheme. Accounting for these factors and interdependencies improves performance in a mobile radio communications system. One example performance measure is throughput over the radio...

20060233282 - Modulation method, modulation apparatus, demodulation apparatus, and radio communication system: First and second quadrature modulators 109, 110 carry out quadrature modulation on Nyquist signals given a delay difference corresponding to 2/4 of their respective symbol periods using a cosine wave having a frequency corresponding to an odd-number multiple of the basic frequency of each Nyquist signal as a carrier. Third...

20060233283 - Demodulator with individual bit-weighting algorithm: A method and system is disclosed for weighting soft values of a demodulated symbol. An incoming symbol is demodulated for obtaining a plurality of soft values associated with the incoming symbol based on a modulation constellation. An effective signal-to-noise ratio (SNR) of at least one soft value, which is to...

20060233284 - Frequency translator using a cordic phase rotator: A frequency translator uses a CORDIC phase rotator coupled to a phase accumulator to translate an input signal in frequency. The CORDIC phase rotator performs required phase angle rotations of input vectors using only shift and add operations. Thus, the frequency translator can be readily implemented in hardware. Higher precision...

20060233286 - Asynchronous servo rro detection employing interpolation: A repeatable read-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values that represent RRO data. The asynchronous sample values are read from a recording medium and generated by an A/D converter at a symbol rate, and the interpolators generate interpolated samples at at least one...

20060233285 - Method for channel estimation when using different modulation methods within one signal interval: The method is based on a signal interval (DB) which comprises a first part (ET) (which is modulated using a first modulation method (GFSK)) of the signal interval and a second part (which is modulated using a second modulation method (DMPSK)) of the signal interval. The channel parameters (c(i)) relating...

20060233287 - Jitter sensitive maximum-a-posteriori sequence detection: A channel detector has an anchor points inserter, a desired signal calculator, a distance calculator and a data detector. The anchor points inserter is adapted to choose values of expected transition locations for transition shifts within a received signal and to insert anchor points corresponding to the chosen values within...

20060233288 - Method and apparatus for coarse and fine frequency and timing synchronisation: Receivers (1) for receiving frequency signals are, to improve their time synchronisation accuracy, provided with synchronisation stages (20) for performing a coarse time synchronisation through autocorrelating samples of a group of preamble symbols (t1,t2,t3) and a fine time synchronisation through crosscorrelating samples of a further group of preamble symbols (t10,G1)...

20060233289 - Mixed direct-indirect adaptation procedure applied to receiver filter: An adaptive procedure that optimizes the parameters of a receiver filter such as a Multiuser Detection (MUD) applied to Direct-Sequence Code Division Multiple Access (DS-CDMA) is disclosed. This procedure takes into account the constraints imposed by the absence of training data sequences sent by the transmitter and required to adapt...

20060233290 - Method and apparatus for efficient multi-stage fir filters: An interpolation filter without a FIFO memory is configured as a cascade arrangement of simpler interpolation sub-filters that are operated in reverse order. The interpolation sub-filter that produces the highest sampling frequency is operated first, followed by interpolation sub-filters that operate at successively lower sampling frequencies. Computational independence of the...

20060233291 - Partial response receiver with clock data recovery: In a receive circuit within an integrated circuit device, a binary input signal is sampled in response to transitions of a sampling clock signal to generate a set of data samples. The binary input signal is additionally compared with first and second threshold levels to generate respective first and second...

20060233292 - Synchronizing signal generating device and method for serial communication: A synchronizing signal generating device for serial communication is constructed with a reference clock circuit, a phase comparator, a PLL filter, VCO and a frequency dividing circuit. The PLL filter continually outputs an unchanged voltage signal when the phase differential signal is within a predetermined range determined by the upper...

20060227852 - Method and apparatus for reducing data collisions in a frequency hopping communication system: A method in a transmitter for data collision avoidance in an uncoordinated frequency hopping communication system is disclosed. The base station (104) first determines (304) that a first data set to be sent to a first device (105) and a second data set to be sent to a second device...

20060227851 - Multiple access method and system: A wireless communication system that transmits data on multiple carriers simultaneously to provide frequency diversity includes an antenna array, which may provide for transmit diversity. Complex coding applied to the carriers and carrier frequency separation control time-domain characteristics of a superposition of the carriers. Each transmitter of a transmitter array...

20060227853 - Method and device to maintain synchronization tracking in tdd wireless communication: A Method to maintain Synchronization Tracking in TDD Wireless Communication comprises steps as follows: a. Dividing a midamble into two parts, then detecting the first one and the second one of the midamble one by one; b: The auto-correlation property operation between the two parts mention above and the corresponding...

20060227854 - Soft weighted interference cancellation for cdma systems: Interference is cancelled from a baseband signal by synthesizing interference from estimated symbols in interfering subchannels. The estimated symbols are hard-coded, soft weighted, or zeroed, depending on the value of an estimated pre-processed signal-to-interference-and-noise ratio (SINR) in each subchannel in order to maximize a post-processed SINR. The estimated pre-processed SINR...

20060227855 - Method and device of cell search for mobile terminal in tdd-cdma system: A cell-searching method and device for a mobile terminal in TDD-CDMA system, in which the mobile uses the special power pulse of using the downlink pilot slot (DwPTS) to acquire coarse synchronization before using conventional correlation cell searching to refine the search. Due to the coarse synchronization, the conventional correlation...

20060227857 - Multipath interference reduction on pilot estimation with legacy system interoperability: System, base station and method for supporting frequency domain equalization for frequency domain equalization-capable mobile stations and supporting improved channel estimation for both time domain and frequency domain equalization-capable mobile stations on the forward link without the necessity of modifications to an air-interface specification of a legacy communication system. A...

20060227856 - Real-time software receiver: A real-time software receiver that executes on a general purpose processor. The software receiver includes data acquisition and correlator modules that perform, in place of hardware correlation, baseband mixing and PRN code correlation using bit-wise parallelism....

20060227859 - Method and apparatus for block-wise decision-feedback equalization for wireless communication: Techniques for performing decision feedback equalization are described. A feed-forward filter response and a feedback filter response are derived based on a channel estimate and a reliability parameter and further without constraint on the feedback filter response or with a constraint of no feedback for an on-time sample. The reliability...

20060227858 - Soft-threshold-based multi-layer decision feedback equalizer and decision method: The present invention provides a soft-threshold-based multi-layer decision feedback equalizer, including a feed forward filter for receiving a transmitted data, a feed backward filter, an adder and a soft-threshold-based multi-layer decision engine (STM engine). The adder is coupled to an output end of the feed forward filter and an output...

20060227861 - Digital pulse-width modulator: A digital pulse-width modulator is provided that receives a digital command input signal and a secondary control input signal and provides a pulse-width-modulated output signal. The pulse-width-modulated output signal comprises a pulse-width that corresponds to an integer number of slots each having a time duration. The integer number of slots...

20060227860 - Digital pwm controller for preventing limit cycle oscillations: An apparatus and method for minimizing limit cycle oscillations within a switched power supply includes providing a programmable dither signal as an input to the digital control loop connected between an output and a control input of the switched power supply. The dither signal minimizes limit cycle oscillations from the...

20060227862 - Method and system for counting moving objects in a digital video stream: A method and system are provided for counting moving objects in a digital video stream. In contrast to known computationally-expensive methods, areas of motion are determined by threshold subtracting a current video frame from a short term average video scene. An object box surrounding an object is determined by threshold...

20060227864 - Contents conversion apparatus and transcode system: Devices connected to a network are caused to conduct transcoding including combination of various coding schemes. A transcoding system includes (information processing) apparatuses, such as STBs, each including a memory unit and a processing unit, and converts a coding scheme of digital contents. The memory unit stores management information acquired...

20060227863 - Method and system for spatial prediction in a video encoder: Described herein is a method and system for spatial prediction in a video encoder. The method and system can operate on a set of video elements in parallel. Multiple modes can also be executed for each set of video elements. Modes correspond to a weighted combination of neighboring video elements....

20060227870 - Context-adaptive bandwidth adjustment in video rate control: Methods and apparatus encode video at a targeted bit rate and yet permit variation of a Quantization Parameter (QP) to encode video of varying complexity with relatively consistent visual quality. Constant bit rate (CBR) encoding is desirable in many applications, such as in transmission or broadcasting environments. However, conventional CBR...

20060227869 - Low-complexity deblocking filter: A method of filtering to remove coding artifacts introduced at block edges in a block-based video coder, the method having the steps of: checking the content activity on every line of samples belonging to a boundary to be filtered and where content activity is based on a set of adaptively...

20060227867 - Method for coefficient bitdepth limitation, encoder and bitstream generation apparatus: A method for coefficient bitdepth limitation in an encoder and/or bitstream generation apparatus including the steps of (A) generating one or more residual block coefficients in response to a video signal and one or more coding parameters and (B) manipulating the one or more coding parameters such that the one...

20060227866 - Method for specification of quantized coefficient limit: An apparatus including a transformation circuit and a scaling/quantization circuit. The transformation circuit may be configured to generate one or more transform coefficients in response to a video stream and one or more first control signals. The transformation circuit may be further configured to limit transform coefficients for residual 4×4...

20060227868 - System and method of reduced-temporal-resolution update for video coding and quality control: A novel system and method of Reduced-Temporal-Resolution Update (RTRU) and quantizing video transform coefficients is provided for use using hybrid coding standards when receiving a frame from within a group of video frames, where the amplitude of the quantization parameter is defined for the quantization of the frame according to...

20060227865 - Unified architecture for inverse scanning for plurality of scanning scheme: Presented herein is a unified architecture for inverse scanning according to a plurality of scanning schemes. In one embodiment, there is presented a method for decoding video data. The method comprises receiving frequency coefficients; determining a scanning scheme associated with the frequency coefficients; receiving scaling factors associated with the frequency...

20060227872 - Moving picture decoding apparatus and picture boundary deciding method: A moving picture decoding apparatus which receives stream data in time series and decodes a moving picture included in the stream data, includes a deciding unit which decides a slice picture boundary of a picture of the moving picture, and a decoding unit which decodes the picture based on a...

20060227871 - Video thumbnail method: Video thumbnails for browsing video clips compressed with methods including scalable intra-frame coding are created by extraction and decoding of the base layer Intra-coded pictures of a video clip. Zoom is available by additional decoding of higher layer(s) of the intra-coded pictures. No separate video thumbnail file is required....

20060227873 - Digital watermarking of a media stream using coded macroblock types: A method and a carrier medium instructing a processor to execute a method. The method includes accepting a compressed video stream compressed by a compression method that uses macroblocks of possibly different macroblock types for each frame predictive encoding frames. The method further includes identifying a sequence of frames that...

20060227875 - System, and method for dc coefficient prediction: Presented herein are system(s), method(s), and apparatus for DC coefficient prediction. In one embodiment, there is presented a method for predicting coefficients for a macroblock. The method comprises providing at least one coefficient prediction direction for at least one neighboring block of a particular block for predicting AC coefficients of...

20060227876 - System, method, and apparatus for ac coefficient prediction: Presented herein are system(s), method(s), and apparatus for AC coefficient prediction. In one embodiment, there is presented a method for predicting AC coefficients for a macroblock. The method comprises determining whether a particular block is predicted from a top neighboring block or a left neighboring block; retrieving from a buffer,...

20060227874 - System, method, and apparatus for dc coefficient transformation: Presented herein are systems, methods, and apparatus for DC coefficient transformations. In one embodiment, there is presented a circuit for transforming a data matrix. The circuit comprises a controller and a plurality of stages. The controller fetches a row or column of elements from the data matrix. The plurality stages...

20060227877 - Image processing method and apparatus: An image processing method generates TAG information based on inclusion information which indicates an existence of significant data in code blocks for each of sub-bands, according to JPEG2000 standard. The image processing method accepts the inclusion information of the code blocks in a predetermined sequence in units of code blocks...

20060227878 - Moving image decoding apparatus: Stream data is decoded for respective macroblocks to store decoded information in a memory, and an error is detected from the decoded information of each macroblock. As a result, if any error is detected, a plurality of pieces of decoded information of macroblocks ahead of the macroblock from which an...

20060227882 - Communication system in digital television: A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the supplemental data to be transmitted, a null sequence inserter for inserting a...

20060227879 - Linear time code receiver: An Linear Time Code (LTC) receiver for receiving and decoding a LTC frame of the type used in connection with film and television and accompanying audio includes a first counter that measures the number of reference clock periods within the duration of a bi-phase mark signal interval to yield a...

20060227881 - Method and system for a parametrized multi-standard deblocking filter for video compression systems: In a video processing system, a method and system for a parametrized multi-standard deblocking filter for video compression systems are provided. A multi-standard deblocking filter may be configured to filter a reconstructed output stream based on a selected standard mode of operation. The configured multi-standard deblocking filter may be utilized...

20060227880 - Reducing motion compensation memory bandwidth through filter utilization: A system and method for processing video information. Various aspects of the present invention may comprise receiving encoded video information at a video processing system. An indication of utilization for at least one system resource of the video processing system may be determined. Such a system resource may, for example,...

20060227883 - Generating edge masks for a deblocking filter: A deblocking unit may include a buffer, an edge mask generator, and a deblocking filter. The buffer may store video data including blocks. The blocks may correspond to at least a portion of a macroblock. The edge mask generator may generate a particular edge mask that defines edges between blocks...

20060227884 - Relay apparatus and electric appliance: A relay apparatus includes a plurality of connecting terminals, such as a modem connecting terminal, a power line connecting terminal, an electric appliance connecting terminal and an antenna line connecting terminal; a selector that selects at least one connecting terminal from among the plurality of connecting terminals to transmit and...

20060227885 - Receiver based saturation estimator: A processor-implemented method of estimating the saturation level of a transmitter from a transmitted communication signal received from the transmitter comprises generating a received data signal from the transmitted communication signal received from the transmitter, generating a transmitted data signal from the received data signal that corresponds to the actual...

20060227887 - Adaptive time-filtering for channel estimation in ofdm system: Time filtering channel estimates in a wireless communication system, such as an Orthogonal Frequency Division Multiplex (OFDM) system, can be used to improve the quality of channel estimates. The characteristics of an optimal channel estimate time filter can depend on the manner in which the channel estimate is determined as...

20060227886 - Advanced receiver with sliding window block linear equalizer: A receiver or an integrated circuit (IC) incorporated therein includes a fast Fourier transform (FFT)-based (or hybrid FFT-based) sliding window block level equalizer (BLE) for generating equalized samples. The BLE includes a noise power estimator, first and second channel estimators, an FFT-based chip level equalizer (CLEQ) and a channel monitor...

20060227888 - Apparatus and method for ft pre-coding of data to reduce papr in a multi-carrier wireless network: A subscriber station for use in a wireless network capable of communicating according to a multi-carrier protocol, such as OFDM or OFDMA. The subscriber station comprises a size M Fourier Transform (FFT or DFT) block for receiving input symbols and generating M FT pre-coded outputs and a size N inverse...

20060227890 - Communication apparatus and communication method thereof: The present invention is provided to improve transmission efficiency by preventing interference between different networks during data transmission using a multicarrier communication method. A transmitter includes a phase vector setting unit and a multicarrier modulator. The phase vector setting unit rotates a phase of transmission data corresponding to each subcarrier...

20060227889 - Wireless communication apparatus and wireless communication method: Disclosed is a wireless communication apparatus which receives, by multiple antennas, signals created by spatially multiplexing multiple transmit streams subjected to power allocation. The wireless communication apparatus has a channel matrix estimator which estimates a channel matrix of spatially multiplexed channels, a spatial demultiplexer which obtains an antenna receive weight...

20060227892 - Interleaver and parser for ofdm mimo systems: A MIMO wireless system includes a transmitter that has a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column...

20060227893 - Method and/or system for estimating phase noise error: Embodiments of methods and/or systems for estimating phase error noise are disclosed....

20060227891 - Method of channel estimation for mimo-ofdm using phase rotated low overhead preamble: A low overhead long preamble and the corresponding channel estimator for MIMO-OFDM systems that are backward compatible with current 802.11a systems. The preamble has a first training sequence and a second training sequence, wherein the second training sequence is a phase rotation of the first training sequence. The first training...

20060227894 - Method and apparatus for minimizing co-channel interference: An approach is provided for minimizing co-channel interference in a communication system is disclosed. A header of a first frame is scrambled based on a first unique word. A header of a second frame is scrambled based on a second unique word. The first frame including the corresponding scrambled header...

20060227895 - Reduction of average-to-minimum power ratio in communications signals: This invention, generally speaking, modifies pulse amplitude modulated signals to reduce the ratio of average power to minimum power. The signal is modified in such a manner that the signal quality remains acceptable. The signal quality is described in terms of the Power Spectral Density (PSD) and the Error Vector...

20060227896 - Apparatus and method for transmitting and receiving high-speed differential current data between circuit devices: An apparatus and method for an interface for transmitting high speed data between circuits. A driver circuit produces first and second differential currents from a digital signal that drive first and second transmission lines. A receiver is connected through first and second terminating resistors to said transmission lines. The resistive...

20060227897 - Digital modulator and digital modulation method: Each of a first oversampling filter and a second oversampling filter oversamples to an n×m times as high frequency as a symbol rate. The first and second oversampling filters then output output data having a sampling frequency to first and second CIC filters, respectively....

20060227899 - Apparatus and method for storing/recovering spectrum: An apparatus and a method for storing/recovering spectrum are provided. The apparatus includes an RF receiver block, a plurality of memory blocks, an RF transmission block, a control circuit. The RF receiver block receives spectrum of signals transmitted through a predetermined RF band (predetermined RF band signals) to down-covert the...

20060227898 - Radio receiver: A radio receiver is provided that includes a front-end circuit operable to receive radio signals transmitted across a frequency band and generate an analog signal corresponding to a plurality of channels within the frequency band. Also included is an analog to digital converter operable to convert the analog signal to...

20060227900 - Digital signal receiving circuit: A delayed peak detector detects a peak level of an input signal IN at timing lagged behind a peak detector, and a peak difference detector detects a peak difference PLD between a delayed peak level DPL and a peak level PL. A reset portion outputs a reset signal BRS for...

20060227901 - Apparatus and method for decoding in a hierarchical, modulation system: A satellite receiver receives a hierarchical modulation based received signal, which has at least an upper layer (UL) and a lower layer (LL), and simultaneously recovers therefrom data conveyed in the UL signal and data conveyed in the LL signal....

20060227902 - Method and apparatus for interative noise whitening with causal and anti-causal prediction filters: A channel detector has a belief propagation detector, a causal and anti-causal channel output module, and a noise prediction module. The belief propagation detector is coupled to a channel and is adapted to receive a channel output. The belief propagation detector is adapted to generate tentative bit decisions based in...

20060227903 - Method of soft bit metric calculation with direct matrix inversion mimo detection: A telecommunication MIMO receiver implements soft bit metric calculation with direct matrix inversion MIMO detection. The receiver has a detector that detects data symbols in a received signal by determining distances between received signal points and constellation points; a scaler that scales the distances using a scaling factor; and a...

20060227904 - Correlation method for channel estimation for ofdm: The present invention concerns a method for estimating the time-dispersion of a channel comprising D subchannels, wherein one computes from a received signal a set of estimated Channel Transfer Factors (CTF's) Ĥ[ν], where ν(0≦ν≦D) is the subchannel number, said method comprising a step of calculating, for a predetermined strictly positive...

20060227907 - Broadcasting receiver: Provided is a digital broadcasting receiver that converts received signals including broadcasting signals of all channels directly to digital ones and then processes them, without change of intermediate frequency thereof. The inventive broadcasting receiver comprises an antenna for receiving signals of entire broadcasting bands on which broadcasting channels exist, a...

20060227906 - Power clipping circuit and power clipping method: A power clipping circuit and method of the clipping circuit is provided. A power clipping circuit comprises, a selector which receives a baseband signal, and selects one of the baseband signal or a feed back signal, and outputs a selected signal, and a square clipping circuit which receives the selected...

20060227905 - Spatial and time multiplexing of multi-band signals: A multi-band receiver for use with satellite ranging systems is provided. The receiver has a simplified architecture in which input signals of various frequencies are multiplexed together to form a single composite analog signal. In accordance with one embodiment of the invention, this composite signal only requires a single RF...

20060227908 - Advanced signal processors for interference cancellation in baseband receivers: A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected subchannel symbol estimates, and an interference canceller for cancelling selected interference in the...

20060227909 - Optimal feedback weighting for soft-decision cancellers: A receiver produces optimal weights for cancelling multipath interference. An SINR measurement module generates SINR measurements corresponding to soft symbol estimates produced by a baseband receiver from a received multipath signal. Each soft symbol estimate is replaced with either a hard estimate or a weighted soft estimate based on how...

20060227910 - Receiver dc offset correction: A system and method are provided for correcting direct current (dc) offset in a wireless communications receiver. The method disconnects the mixer signal input from a received communication signal in an initialization state. An analog signal is accepted from the mixer output and converted into digital signal. A fine correction...

20060227911 - Eye center retraining system and method: A system and method is provided for bit eye center retraining. In general, the system samples an incoming data stream to determine where transitions in the data stream occur, selectively compares the location of the transitions to the expected locations to produce difference values, and combines pairs of difference values...

20060227912 - Dfe margin test methods and circuits that decouple sample and feedback timing: Described are methods and circuits for margin testing digital receivers. These methods and circuits prevent margins from collapsing in response to erroneously received data, and can thus be used in receivers that employ historical data to reduce intersymbol interference (ISI). Some embodiments allows feedback timing to be adjusted independent of...

20060227913 - Methods and apparatuses to provide synchronization symbol on demand for dsl systems: A method and apparatus for providing synchronization data on demand are described. The method includes sending one or more synchronization parameters from a receiver to a transmitter in a data communication system, and adjusting transmission of synchronization data from a transmitter to a receiver using the one or more parameters...

20060227914 - Clock data recovery circuit with circuit loop disablement: A clock data recovery circuit includes a first circuit, a second circuit, and a third circuit. The first circuit is configured to receive data and a clock signal and to detect transitions in the data and provide a first signal based on the clock signal and the transitions in the...

20060227916 - Data recovery method, data recovery circuit, data transmitting/receiving apparatus and information processing apparatus: Serially transferred data is over sampled with a multiphase clock signal generated as a result of shifting a predetermined frequency clock signal by a predetermined phase each, to obtain over sampling data; generating clock patterns, having mutually different phase states according to a data phase state of the over sampling...

20060227915 - Eye center determination system and method: A system and method for bit eye center determination is provided. In general, the system samples an incoming data stream to determine where transitions in the data stream occur, selectiv