Pulse or digital communications inventions 03/06

20060067380 - Device and method for generating a pseudorandom sequence of numbers: A device for generating a pseudorandom sequence of numbers includes a feedforward coupler, which has a plurality of memory units, and a feedback coupler connected between an input and an output of the feedforward coupler. The feedback coupler includes a changeable feedback characteristic and is embodied to change the feedback...

20060067381 - Spectrum re-use employing transfer domain communications systems: A system and method for spectrum re-use employing transfer domain communications systems is disclosed. An adaptive waveform technique reconfigures its fundamental modulation waveform depending on the spectral environment. Spectral interference, or other friendly user's presence, is estimated using general spectral estimation techniques. Once the frequency bands containing strong interference or...

20060067382 - Unambiguously encoding and decoding signals for wireless channels: A method encodes a sequence of blocks of input bits to be transmitted over a wireless channel. Each block of input bits is converted to a codeword, and each codeword is mapped to multiple sub-blocks of complex numbers. Each sub-block is multiplied by a disambiguating spreading transform to obtain a...

20060067383 - Parameter estimate initialization using interpolation: A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator...

20060067385 - Mobile station capable of channel estimation using substantial single antenna at path switching, channel estimating apparatus and its receiving method: In a mobile station including a radio receiver circuit adapted to receive first and second signals from first and second antennas of a base station, a plurality of fingers each adapted to demodulate the first and second signals for one propagation path, and a Rake combiner adapted to combine demodulated...

20060067384 - Path search method for cdma communication systems: The embodiments of this invention relate generally to wireless telecommunication systems and, more particularly, to spread spectrum code division multiple access communication systems that employ a pilot-channel for path search and acquisition and for allocating fingers of a multifinger correlator, such as one found in a RAKE receiver. While the...

20060067386 - Pseudo-noise encoded digital data clock recovery: An apparatus is disclosed. The apparatus includes a correlator that correlates a pseudo-noise sequence with a received clip stream in order to generate a correlated output. The apparatus further includes a phase controller coupled to the correlator to generate a histogram of the correlated output over a plurality of bit...

20060067389 - Communication system, communication apparatus, and transmission controlling method: The invention aims at determining a transmission power value or a data rate in transmission power control in a reception side apparatus. A communication apparatus (2) includes a modulation class controlling portion (14) for selecting one data rate, and transmits a communication signal having the selected one data rate to...

20060067388 - Methods and apparatuses for detecting impulse noise in a multi-carrier communication system: Embodiments of an apparatus, system, and method are described for a multi-carrier communication system that detects for impulse noise present on a transmission medium. Values of peak error samples may be measured to determine an approximate magnitude of the average peak error samples present on a transmission medium. An average...

20060067387 - Transmit adaptive equalization using ordered sets: In a communication system comprising first and second nodes, a transmit adaptive equalization technique is implemented utilizing ordered sets. The first and second nodes may communicate over a Fibre Channel link or other medium. The first and second nodes comprise respective transmitter and receiver pairs, with the transmitter of the...

20060067390 - Method and apparatus for measuring jitter: A system and method for characterizing the jitter of a periodic signal. Samples of the signal are taken with a sampling device. A set of samples representing a particular value of the signal in multiple cycles of the periodic signal is collected. Those values are formed into a histogram. The...

20060067392 - Method and apparatus for measuring the input frequency response of a digital receiver: A frequency response measurement circuit includes a generation circuit operative to provide an input signal having a voltage and programmable frequency characteristics in response to a frequency control signal. A decision circuit is coupled to the generation circuit and is operative to sample the input signal at predetermined intervals in...

20060067391 - Methods and systems for margin testing high-speed communication channels: A receiver includes simple, effective margining circuitry to support manufacturer and in-situ margin testing of high-speed communication channels. The receiver includes an input pad coupled to a termination resistor and the input of a sampler. An internal or external current source alters the current through the termination resistor to vary...

20060067393 - Equalizer for a serial data communication receiver: An equalizer for a serial data communication receiver includes: a first transistor including a first input terminal, a first output terminal, and a first equalization terminal; a second transistor including a second input terminal, a second output terminal, and a second equalization terminal; a first resistor coupled to the first...

20060067394 - Wireless device having a hardware accelerator to support equalization processing: The present invention provides an equalizer processing module within a wireless terminal having an equalizer interface that receives an incoming baseband signal from a baseband processor operably coupled to the equalizer processing module and outputs soft decisions. A processor or advanced reduced instruction set computer (RISC) machine (ARM) couples to...

20060067398 - Adaptive delay base loss equalization: A method, system and apparatus to self-determine equalization parameters for a channel. An initiator sends an equalization insensitive signal (EIS) to a responder on channel to be equalized and begins a count. A responder responds with an EIS. When the initiator receives the response EIS the count is terminated. The...

20060067396 - Feed forward equalizer for a communication system: Method and apparatus for a feed forward equalizer for a communication system are described....

20060067395 - Iterative forward-backward parameter estimation: A method and apparatus for jointly estimating channels used to propagate desired and interfering signals received by a wireless receiver. A blind parameter estimator in the wireless receiver includes a forward parameter estimator and a backward parameter estimator that each include an equalizer and a channel estimator for generating forward...

20060067397 - Receiver for performing adaptive equalization and method: A receiver includes a filter capable of receiving an input signal and generating an output signal. The filter provides a transfer function. The filter includes a first stage capable of adjusting a pole and a first zero of the transfer function. The filter also includes a second stage capable of...

20060067399 - Method and apparatus for encoding and decoding data in intra mode based on multiple scanning: Provided are a method and apparatus for encoding and decoding in an intra mode based on a multiple scanning method through which efficiency of the intra mode is improved by using a spatial relationship within a frame more and obtaining estimation information from numerous references. The method includes: dividing an...

20060067400 - Method and apparatus for encoding and decoding in inter mode based on multiple scanning: Provided are a method and apparatus for encoding and decoding in an inter mode based on a multiple scanning through which efficiency of the inter mode is improved by using a spatial relationship within a frame and obtaining estimation information from numerous references. The method includes dividing an input image...

20060067401 - Seamless switching of scalable video bitstreams: A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are accommodated by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching among scalable bitstreams. This seamless...

20060067402 - Seamless switching of scalable video bitstreams: A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are accommodated by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching among scalable bitstreams. This seamless...

20060067403 - Information processing device and information processing method: An information processing device includes a first unit which extracts intra prediction information included in a bit stream of video codec, and a second unit which converts the resolution of image data into an image whose resolution is higher than that of an original image, wherein the second unit converts...

20060067404 - Motion estimation and compensation in video compression: A method of video motion estimation is described for determining the dominant motion in a video image. The dominant motion is defined by a parametric transform, for example a similarity transform. In the preferred embodiment, selected pairs of blocks in one frame are traced by a block matching algorithm into...

20060067406 - Information processing apparatus and program for use in the same: An information processing apparatus includes a unit that executes a de-blocking filter process for each of decoded pictures, a unit that executes a motion compensation prediction process that generates an inter-frame prediction signal, from one or more pictures that are subjected to the de-blocking filter process, a unit that executes...

20060067405 - Motion estimation for video processing using 2-d (spatial) convolution: A device including a two-dimensional convolution unit to perform spatial image filtering. A reference frame mirroring unit is connected to the two-dimensional convolution unit. A mean square error (MSE) decision unit is connected to the two-dimensional convolution unit to perform motion estimation by selecting the displacement that minimizes MSE....

20060067407 - Signal processing method and device and video system: In a signal processing device for performing inverse orthogonal transform for a combination of orthogonal transform coefficients obtained by orthogonal-transforming a signal, a pixel signal value for a combination of orthogonal transform coefficients high in appearance is stored in advance in a pixel signal table together with an index assigned...

20060067408 - General purpose compression for video images (rhn): Methods, medium, and machines which compress, encode, enhance, transmit, decompress and display digital video images in real time. Real time compression is achieved by sub-sampling each frame of a video signal, encoding and filtering the pixel values to codes, and run-length encoding the codes. Real time transmission is achieved due...

20060067409 - Image processing apparatus: An image processing apparatus includes a video decoder which subjects a stream signal to a decoding process based on an MPEG system, a de-blocking filter which subjects a decoded image signal decoded by the video decoder to a de-block filtering process, and a holding unit which previously holds a block...

20060067410 - Method for encoding and decoding video signals: In one embodiment, frame intervals of encoded frames represented by the encoded video signal are decoded, and at least one frame interval includes a different number of encoded frames as compared to another frame interval. Here, associated size information for each frame interval in the encoded video signal may be...

20060067414 - Envelope stabilization method and apparatus: A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged...

20060067415 - Method and apparatus for increasing data throughput in a multiple antenna communication system using additional subcarriers: Methods and apparatus are provided for increasing data throughput in a multiple antenna communication system using additional subcarriers. The multiple antenna communication system includes at least one legacy system employing an N1 point fast Fourier transform (FFT) within a bandwidth, BW1. Data is transmitted using an N2 point inverse FFT...

20060067411 - Method and apparatus to interleave bits across symbols from different constellations: An encoded input bit stream is interleaved across a number of symbols having different bit sizes in a manner that ensures that the bits assigned to each symbol from the bit stream are separated by a minimum separation. In this manner, bits that are adjacent within the bit stream do...

20060067412 - Multicarrier receivers and methods for detecting cyclic prefixes having unknown lengths: A multicarrier receiver sequentially correlates two training symbols to determine a length of a cyclic prefix associated with each of the training symbols....

20060067413 - Multicode transmission using walsh hadamard transform: A symbol sequence contained in a received signal comprising a cyclic convolution of a Walsh code multiplexed signal and a channel impulse response of a multipath channel is detected using Walsh Hadamard domain equalization techniques. The method comprises converting the received signal and the channel impulse response of the multipath...

20060067416 - Transmission format indication and feedback in multi-carrier wireless communication systems: A method is provided for specifying a transmission mode for each signal portion of a multi-carrier signal transmitted between a first device and a second device. The method includes defining an adaptive modulation and coding (AMC) set divided into a plurality of subsets wherein each of the plurality of subsets...

20060067417 - Transmission method for ofdm-mimo communication system: A data transmission method in a MIMO-OFDM communication system including at least one receiver for receiving a signal through a plurality of reception antennas and a transmitter for selecting a transmission channel using channel information being fed back from the receiver and transmitting a signal through a plurality of transmission...

20060067418 - Method and apparatus for establishing non-standard data rates in a wireless communication system: A wireless communication device capable of receiving data using non-standard data includes a receiver section, a demodulation mapping module, a decoding module, and a rate determination module. The receiver section is operably coupled to convert a radio frequency signal into a digital signal. The demodulation mapping module is operably coupled...

20060067419 - High rate, high diversity transmission on multiple transmit antennas: High data rate, high diversity transmission is provided in a dual transmit antenna system over multiple sample times though the use of coding....

20060067420 - Multiple input multiple output orthogonal frequency division multiplexing mobile comminication system and channel estimation method: The present invention provides a channel estimation method for a Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing system, characterized by comprising steps of: for each of a plurality of receiving antennas of said Orthogonal Frequency Division Multiplexing system, calculating a channel impulse response sequence and a channel frequency response...

20060067421 - Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system: Techniques for transmitting data using a combination of transmit diversity schemes are described. These transmit diversity schemes include spatial spreading, continuous beamforming, cyclic delay diversity, space-time transmit diversity (STTD), space-frequency transmit diversity (SFTD), and orthogonal transmit diversity (OTD). A transmitting entity processes one or more (ND) data symbol streams based...

20060067423 - Low power radio transmitter using pulse transmissions: A low power radio transmitter includes an intermediate frequency stage, signal-to-pulse conversion module, and a power amplifier. The intermediate frequency stage up-converts the frequency of a base-band digital signal into an N-bit signal at the intermediate frequency. The signal-to-pulse conversion module converts the N-bit signal at the intermediate frequency into...

20060067422 - Modulation for broadcasting from multiple transmitters: In a cellular network, randomness is introduced into a transmitted signal at each transmitter, and the resulting received signal, which is the sum of all received signals, fluctuates more in time than a signal transmitted without the introduced randomness. While the introduction of randomness can diminish reception of some parts...

20060067424 - Device, system and method of i/q mismatch correction: A method of assigning values to parameters for IQ mismatch cancellation. The method includes providing values to a processing path of a communication device, passing the provided values through au IQ modulator, at least one non-linear element and an IQ demodulator, to produce distorted values, and estimating at least one...

20060067425 - Transmitter and transmission method: The invention relates to a transmitter comprising: means for generating an intermediate frequency signal, means for predistortion of the intermediate frequency signal using a predistortion parameter, means for generating a radio frequency signal from the predistorted intermediate frequency signal, means for determining an image-to-signal-ratio of the radio frequency signal, means...

20060067427 - Architectural techniques for envelope and phase signal alignment in rf polar transmitters using power amplifier feedback: In an envelope comparison embodiment, a delay calibrator produces a delay signal based on a comparison of a feedback signal and an envelope component of the transmitted signal. A down-converter produces the feedback signal from an outgoing modulated RF signal based on at least one local oscillation. Envelope detectors in...

20060067426 - Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization: A multicarrier signal is generated by pre-compensating frequency-domain subcarrier symbols for substantially linear distortion subsequently introduced by a time-domain baseband filter....

20060067428 - Determinitic spatial power allocation and bit loading for closed loop mimo: Spatial power allocation and bit loading are performed deterministically for a closed loop MIMO system....

20060067429 - Low-if multiple mode transmitter front end and corresponding method: A WLAN transmitter capable of transmitting data signals modulated in accordance with an individual one of at least two different modulation schemes and corresponding methods and integrated circuit chips are provided. The WLAN transmitter contains a front end section having a low-IF topology and including a digital front end unit...

20060067430 - Band averaging circuit and related method for carrier frequency offset estimation in a multi-band multi-carrier communication system: A band averaging circuit and a related method for estimating a carrier frequency offset are applied in a multi-band multi-carrier communication system. A packet of the multi-band multi-carrier communication system is transmitted via a plurality of carriers. The band averaging circuit includes a frequency offset estimation unit for generating a...

20060067431 - Circuit and method for recovering a carrier: The invention relates to recovering a carrier for a synchronous demodulator, that receives an input signal. A carrier is reconstructed for the provided input signal, and the input signal (in) and carrier (tr) are mixed to generate a mixed signal to be outputted (i, q), wherein a residual phase error...

20060067432 - Frame-based carrier frequency and phase recovery system and method: Header information is used to facilitate coarse frequency and frame recovery. The coarse frequency and frame recovery is thereafter utilized to perform adaptive phase and frequency synchronization on a frame-by-frame basis....

20060067433 - Frequency-shift-keying demodulator and method of frequency-shift-keying: According to the present invention said combining unit (3, 4; 31, 32, 33, 41, 42) comprises at least one adder (3; 31, 32) for adding the input signal i(t) and the shifted signal Id(t) output by the phase shifter 2 and for outputting an added signal and at least one...

20060067434 - Method and apparatus for providing iterative timing recovery: A method includes the steps of receiving a signal indicative of data bits, and performing per survivor processing-iterative timing recovery (PSP-ITR) on the received signal to generate probabilities of the data bits. To perform PSP-ITR on the received signal, the signal can be processed using a per survivor processing-soft decision...

20060067435 - Semiconductor circuit device: A semiconductor circuit device is provided which can attain more stable operations against noise in a data communication system without increasing the power consumption of an overall system, thereby improving the reliability of data communication. For a demodulation baseband signal (S11) obtained by performing digital processing on an output signal...

20060067436 - Metacores: design and optimization techniques: A method for developing a circuit is disclosed. The method generally comprises the steps of (A) generating a solution space having a dimension for each of a plurality of parameters for the circuit, (B) evaluating a plurality of instances of the circuit in the solution space through a software simulation,...

20060067438 - Detector for clock phase and carrier phase: A detector for a receiver generates a clock phase detection signal and a carrier phase detection signal from of a plurality of clock polyphase signals of an oversampled signal. The detector comprises a plurality of carrier phase detectors, a plurality of variance estimation units, a selection unit and an output...

20060067437 - Wireless communication system and method with frequency burst acquisition feature using autocorrelation: A wireless communication system is provided that detects a frequency burst (FB) through analysis of the autocorrelation function of received signals. The system can accommodate the relatively large frequency offsets that are associated with less expensive reference frequency crystals. The system employs a multi-mode filter including an FB filter and...

20060067439 - Frequency control apparatus, wireless communication apparatus and frequency control method: A wireless communication apparatus performs fast control even on a large phase rotation of a received signal to synchronize the frequency of a received signal with a specified frequency. The wireless communication apparatus comprises a symbol-phase-difference detector which detects an intersymbol phase difference of an input signal demodulated by a...

20060067440 - High speed multi-mode receiver: A data receiver is provided which is operable to receive a signal controllably pre-distorted and transmitted by a transmitter, to generate information for adjusting the pre-distortion applied to the signal transmitted by the transmitter, and to transmit the information to the transmitter. The receiver is further operable to perform adaptive...

20060067441 - Apparatus and method for estimating delay spread of multi-path fading channel in wireless communication system: Disclosed are an apparatus and method that can estimate the maximum delay spread by means of simple computation while being robust against SNR (Signal-to-Noise Ratio) variations. A standard deviation value of a noise component is produced from time-domain signal values obtained from a received signal. The time-domain signal values corresponding...

20060067442 - Digital wireless receiver using antenna diversity method: Receiving antennas 2a, 2b receive a digital modulated signal from a digital wireless microphone. The digital modulated signal comprises a carrier signal modulated with successively generated digital signal trains. A changeover switch 4 selects one of the antennas 2a, 2b in response to a selection signal. A high-frequency unit 8,...

20060067444 - Diversity method and apparatus, and receiving method and apparatus: A derivation unit derives SNRs corresponding respectively to two repeated OFDM symbols having the same content. The derivation unit generates, from the derived SNRs, a control signal necessary for deriving weighting factors and then outputs this control signal as a combined control signal. An FFT unit performs FFT on a...

20060067445 - Mobile terminal and data reception method for the same: To provide a mobile terminal controlling suitably whether or not a diversity reception should be performed to realize low power consumption, and a data reception method for the same, wherein a mobile phone, when performing a data communication from a server apparatus via a communication network and a base station,...

20060067443 - Multi-antenna multicarrier receiver and methods for adaptively adjusting a receive data rate based on channel utilization: A multicarrier receiver changes receive capabilities based on a current channel utilization. The number of antennas used to receive multicarrier communication signals may be changed or the channel bandwidth may be changed....

20060067447 - Receiving apparatus in communication system: In a receiving apparatus in a multicarrier communication system for transmitting data independently via a plurality of subchannels, (1) a soft-decision target value lnD0 is calculated, this being the difference between the probability that data received from a subchannel of interest is one of two values and the probability that...

20060067446 - Signal detector used in wireless communication system: A signal detector arranged in a receiver of a wireless communication device includes a variable passband bandpass filter configured to bandlimit a received signal using a variable passband; a signal parameter detection unit configured to detect a signal parameter of each of a plurality of signals contained in the received...

20060067448 - Apparatus and method for performing adaptive equalization in a receiver: A method includes generating an output signal based on an input signal using a filter. The filter provides a transfer function that at least partially compensates for distortion of the input signal. The method also includes adjusting the filter to alter at least one of a zero and a pole...

20060067449 - Data processing device including clock recovery from various sources: A data processing device is described having a first receive data input unit for inputting a first receive data stream into the data processing device, at least one second receive data input unit for inputting at least one second receive data stream and a clock recovery unit for recovering a...

20060067450 - System and method for ultra wideband communications using multiple code words: A method is provided for operating a wireless device. In this method, a first operation is performed on a wireless signal using a first group of wavelets arranged according to a first analog code word format (720). A second operation is then performed on the wireless signal using a second...

20060067451 - Providing global positioning system timing signals to remote cellular base stations: In a cellular network, a GPS receiver includes circuitry that modulates a global positioning system (GPS) timing pulse signal with a carrier signal and transmits the modulated signal to one or more remote base stations. When the modulated timing pulse signal is received at a remote base station it is...

20060067454 - Circuit arrangement and method for determining a frequency drift in a phase locked loop: A circuit arrangement for determining a frequency drift in a phase locked loop includes a type I phase locked loop having a phase comparator, a charge pump, a loop filter, an oscillator and also a frequency divider in a feedback path of the control loop. A device is coupled to...

20060067452 - Clock and data recovery circuit: A clock and data recovery circuit is provided that includes a phase/frequency detector to receive input data and multiphase clock signals. The phase/frequency detector including a first set of flip-flop circuits each to sample the input data at one of the multiphase clock signals and each to output a sampled...

20060067453 - Timing circuit for data packet receiver: A timing circuit for a receiver adapted for receiving data packet transmissions, each packet having a particular data frequency, the timing circuit comprising: (a) a clock generating circuit for generating a clock signal derived from a local reference clock signal and not from received data packets; and (b) a phase...

20060056491 - Spread spectrum clock generator: A spread spectrum clock generator comprises a conventional closed-loop VCO and an open-loop VCO where both are coupled to the same point of the PLL. Both VCOs comprise a V-to-I converter followed by a current-controlled oscillator and are identical in design but only the open-loop VCO receives the modulation current...

20060056490 - Spread spectrum clock generator and method of generating spread spectrum clock: A clock circuit for generating a spread spectrum clock signal with reduced amplitude electromagnetic interference (EMI) spectral components is provided where the clock circuit includes a delay line circuit, the delay line circuit providing a spread spectrum clock signal from a reference clock signal in response to a modulation signal,...

20060056492 - Wireless communication control method and wireless communication device: A wireless communication control method of the present invention for wireless communication devices employing Adaptive Frequency Hopping that switches among a plurality of channels except a channel subject to interference by interference waves in a predetermined frequency band for communication includes steps of creating, setting, processing reception, and assessing channels....

20060056493 - Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals: A wireless spread spectrum communication system for transmitting data includes a plurality of end point transmitters and at least one receiver. The end point transmitters transmit data via a frequency hopped spread spectrum signal where the transmitting signal is sent without the benefit of frequency stabilization. The receiver is responsive...

20060056494 - Channel estimation for time division duplex communication systems: A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. Each burst has an associated midamble sequence, a receiver knowing the midamble sequences of the K bursts. The receiver receives a vector corresponding to the transmitted midamble sequences...

20060056496 - Method and apparatus for processing a modulated signal using an equalizer and a rake receiver: In a method for achieving higher S/N, one or more signals are received and processed to provide one or more streams of samples. In a first processing scheme, the sample stream(s) are equalized within an equalizer to generate symbol estimates, which may be subsequently processed (e.g., despread and decovered) to...

20060056495 - Portable terminal set and control method thereof: Monitoring is made as to whether the serial number of header incorporated to the data sent to an RLC 15 after a decoding process is continuous. When it is determined as a result of monitoring for a predetermined period of time that no defect is present in the header numbers,...

20060056497 - Method and apparatus for fast acquisition and low snr tracking in satellite positioning system receivers: A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor accumulates samples of a SATPS signal that are identically positioned within corresponding PRN...

20060056498 - Reconfigurable transceiver architecture for frequency offset generation: A first serial transceiver has a reference clock, a first transmitter, and a first receiver. The first receiver includes (i) a phase detector, and (ii) a phase rotator. The phase rotator is driven by the reference clock. A first multiplexer is coupled to the first receiver. The first multiplexer receives...

20060056499 - Multi-pair broadband transmission system: A high-speed data transmission network system (8) is provided. The system (8) includes a plurality of subscriber premises (12) that transmit a first upstream signal (28) on a first frequency band to a central office or a remote terminal (10), which is in communication with the plurality of subscriber premises...

20060056500 - Signal conditioning arrangement and method of conditioning a signal: A signal conditioning arrangement includes a sensor arrangement for sensing a measured quantity and for outputting an output signal having a first or a second logical signal state based on the measured quantity, and means for generating an evaluating impulse if the logical signal state of the output signal does...

20060056501 - Line quality report accuracy measurement device and accuracy measurement method: A channel quality report accuracy measurement apparatus and accuracy measurement method are provided that correctly measure the accuracy of channel quality reported from a communication apparatus. A scheme control section (140) stores coding rates and modulation schemes corresponding to CQIs, and specifies the transmission scheme corresponding to a fixed CQI...

20060056502 - Scaled signal processing elements for reduced filter tap noise: An adaptive transversal filter having tap weights Wj which are products of corresponding tap coefficients Cj and tap gains Mj is provided. A filter control loop controls all of the tap coefficients Cj such that an error signal derived from the filter output is minimized. One or more tap control...

20060056503 - Pipelined parallel decision feedback decoders for high-speed communication systems: The invention relates to techniques for pipelining parallel decision feedback decoders (PDFDs) for high speed communication systems, such as 10 Gigabit Ethernet over copper medium (10GBASE-T). In one aspect, the decoder applies look-ahead methods to two concurrent computation paths. In another aspect of the invention, retiming and reformulation techniques are...

20060056504 - Method for estimating communication conditions affecting an uwb wireless link: The present invention relates to a method for transmitting data by means of at least one pulse sequence carried by a radio signal, in the course of which a power value PWk representative of an amount of power carried by said pulse sequence is computed. The method according to the...

20060056507 - Method and system for improving video/audio data display fluency: A method for improving fluency of video and audio data display includes a frame display time computation process, which calculates a best time interval according to a first GOP and utilizes the best time interval to display the frames in a second GOP after the first GOP. The method may...

20060056505 - Robust mode staggercasting: A method and apparatus for staggercasting, encodes a first signal representing content and encodes a second signal representing the content using encoding relatively more robust than the encoding of the first encoded content representative signal. A composite signal including at least the first and second encoded signals is generated, in...

20060056506 - System and method for embedding multimedia compression information in a multimedia bitstream: Systems and methods for embedding multimedia compression information in a multimedia bitstream to form a hybrid multimedia bitstream having data representing multimedia compression information as well data representing a multimedia signal. The embedded multimedia compression information may be extracted from the multimedia bitstream by an executable module to assist in...

20060056508 - Video coding rate control: Video encoding (such as H.263, MPEG4, H.264) modifies TMN5-type frame skipping and quantization parameter updates according to buffer fullness levels and makes I-frame initial quantization parameters depend upon prior P-frame quantization parameters....

20060056509 - Image display apparatus, image display control method, program, and computer-readable medium: An image display apparatus is disclosed that includes an image input unit configured to input plural images, a display image selection unit configured to select an image to be displayed from the images input by the image input unit, an image display unit configured to display the image selected by...

20060056511 - Flexible polygon motion estimating method and system: A method for block-based motion estimation, the flexible triangle search (FTS) algorithm is provided. The FTS is based on the simplex algorithm for optimization adapted to an integer grid. The proposed algorithm is highly flexible because of its ability to quickly change its search direction and to move toward the...

20060056510 - Method of coding video streams for low-cost multiple description at gateways: The present insertion utilizes a data relationship between B-frame motion vectors (k(B)) and P-frame motion vectors (k(P)) to simplify merging and dividing of multiple descriptions (22, 24) at network nodes (28) such as gateways by avoiding the need to decompress and re-compress at least one of the multiple descriptions....

20060056513 - Accelerated video encoding using a graphics processing unit: A video encoding system uses both a central processing unit (CPU) and a graphics processing unit (GPU) to perform video encoding. The system implements a technique that enables the GPU to perform motion estimation for video encoding. The technique allows the GPU to perform a motion estimation process in parallel...

20060056516 - Image-data processing apparatus: An image processing apparatus detects a noise area in image data generated by decoding encoded data encoded by a frequency transform method and a lossy compression method. The image processing apparatus includes a motion detection unit for detecting motion in an area having at least one pixel in the image...

20060056514 - Techniques for minimizing memory bandwidth used for motion compensation: In a motion compensation engine, a number of blocks are provided for re-ordering motion vector (MV) reference positions prior to fetch. An MV Sort & Group block outputs MVs one at a time to a Decomposer block. The Decomposer block takes each MV and decomposes it into a series of...

20060056512 - Video encoding method and corresponding computer programme: The invention relates to a method of encoding a sequence of frames, composed of picture elements (pixels), by means of a three-dimensional (3D) subband decomposition involving a filtering step applied, in the sequence considered as a 3D volume, to the spatial-temporal data which correspond in said sequence to each one...

20060056515 - Video evaluation device, frame rate determination device, video process device, video evaluation method, and video evaluation program: A frame rate is determined in accordance with the smoothness in movement of a video. An amount of change detection section extracts an amount of change based on a plurality of frame pictures included in an input video signal input as a moving picture signal from the outside and outputs...

20060056517 - Method of communicating between modules in a decoding system: Means of communicating between modules in a decoding system. A variable-length decoding accelerator communicates with a core decoder processor via a co-processor interface. In one embodiment, other decoding accelerators, in addition to the variable-length decoder, are adapted to provide status data indicative of their status to a co-processor status register....

20060056518 - Intra coding video data methods and apparatuses: Streamlined prediction approaches are provided to predict pixel values of a 4×4 subblock of a macroblock of video data being encoded, under a number of prediction modes. Additionally, prediction approaches are provided to predict pixel values of a non-4×4 M×N subblock of a macroblock of video data being encoded, under...

20060056519 - Dynamic intra-coded macroblock refresh interval for video error concealment: The present invention provides, in one embodiment, a system and method for concealing video errors. The system includes a coding engine for processing each frame of a video signal to generate macroblocks, selecting a refresh interval based upon network communication parameters, and encoding one or more of the macroblocks as...

20060056521 - High-speed precoders for communication systems: The invention relates to techniques for implementing high-speed precoders, such as Tomlinson-Harashima (TH) precoders. In one aspect of the invention, look-ahead techniques are utilized to pipeline a TH precoder, resulting in a high-speed TH precoder. These techniques may be applied to pipeline various types of TH precoders, such as Finite...

20060056520 - Hybrid scalable encoder, method and media for standard definition and high-definition video formats on a single-disc: A hybrid scalable encoder, method, and media are disclosed for processing video signal data as a plurality of block transform coefficients for each of a base layer and an enhancement layer included on a dual standard-definition and high-definition disc. The encoder includes a two-layer decomposition unit for decomposing an original...

20060056522 - Multiline transmission in communication systems: A method and system for multiline transmission in communications systems are described. A transmitter (1102) performs MIMO pre-processing (1104) on symbol vectors. A signal vector associated with the symbol vector is transmitted. A receiver (1106) performs MIMO post-processing (1108) on the received signal vectors to minimize the effects of crosstalk...

20060056523 - Device and process for adjusting the bit rate of a stream of contents and associated products: The present invention relates to a device and a process for adjusting the bit rate of a stream of contents as a function of processing capabilities of at least one receiver. These contents are transmitted by a sender to the receiver according to a communication protocol providing for a return...

20060056527 - Adaptive bit/power loading technique for a multicarrier communication system: A bit/power loading method in an adaptive modulation-based multicarrier communication system computes ratios of modulation mode values to transmission power values sub-channel-by-sub-channel, selects a combination of sub-channels in which a sum of the ratios is maximized for a total number of bits to be simultaneously transmitted, and transmits signals in...

20060056526 - Allocating data between tones in a vdsl system: A new protocol is proposed for transmission of data through lines such as telephone lines. The tones of a signal are associated into groups 10, 11, and tone ordering, gain selection, and/or bit swapping within the processing system are done within the members of a group 10, 11. This idea...

20060056524 - Apparatus and method for providing digital broadcasting service based on multiple broadcasting sites and frequency bands: An apparatus for transmitting data in a digital broadcasting system is disclosed. The apparatus includes: a source encoding unit for encoding data to be transmitted and generating source-coded data; a capacity managing unit for dividing the source-coded data into divided data for a plurality of channels in case that an...

20060056525 - Computationally efficient protocols for vdsl system: Techniques which reduce the computational burden of the IFFT/FFT section of a DSL data transmission/reception apparatus, taking into account the nature of conventional IFFT/FFT algorithms. These algorithms operate using “butterflies” representing complex calculations performed on input values. The butterflies are here referred to as “simple” if all the input values...

20060056529 - Method and system for optimization of channel estimation and synchronization in an ofdm-mimo wireless communication system: The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by...

20060056528 - Method of transmitting and receiving preamble sequences in an orthogonal frequency division multiplexing communication system using multiple input multiple output scheme: A method of transmitting and receiving preamble sequences in a transmitter in an OFDM communication system is provided. A transmitter segments a first sequence of a predetermined length into a predetermined number of second sequences, generates as many preamble sequences as the second sequences by applying different time offsets to...

20060056530 - Receiving method and apparatus, and communication system using the same: A radio unit receives burst signals in a target system or those in a MIMO system. A judgment unit determines if a MIMO signal having a form of channel corresponding to the target system is assigned posterior to a target LTS and a target signal. If a constellation of signal...

20060056532 - Calibration in mimo systems: Aggregate channel reciprocity in a wireless system is supported by calibrating transmitter/receiver pairs....

20060056531 - Interpolation in channel state feedback: Feedback bandwidth may be reduced in a closed loop MIMO system by Householder transformations, vector quantization using codebooks, and down-sampling in the frequency domain....

20060056534 - Method and apparatus to balance maximum information rate with quality of service in a mimo system: Disclosed is a method to operate a wireless MIMO communication system, where the method includes, for N symbols of a frame of information to be transmitted through a plurality of eigen sub-channels, allocating N1, symbols to a stronger eigen sub-channel and N2 symbols to a weaker eigen sub-channel, where N1,...

20060056533 - Minimizing feedback rate for channel state information in mimo systems: A method minimizes a rate for feeding back channel state information from a receiver to a transmitter in a multi-input, multi-output communications systems. A temporal autocorrelation function of the channel between the transmitter and the receiver is determined. A spatial covariance information is estimated of the channel. Then, the minimum...

20060056535 - Method for dividing the bit rate of qpsk signals into two or several subchannels: The invention relates to a method for dividing the bit rate of QPSK signals by splitting the spectrum of said QPSK signals into at least two channels having band-limited filters in the modulator and demodulator. The prefiltered QPSK signal is split into at least one real and at least one...

20060056536 - Delay locked loop circuit, digital predistortion type transmitter using same, and wireless base station: Disclosed are a delay locked loop circuit capable of accurately extracting nonlinear distortion superimposed on an output of a digital predistortion type transmitter, the digital predistortion type transmitter, and a wireless base station using the same. The delay locked loop circuit comprises a variable delay element for receiving first input...

20060056538 - Apparatus and method for transmitting data using full-diversity, full-rate stbc: A data transmission apparatus and method using a full-diversity, full-rate STBC are provided. In the data transmission apparatus, a serial-to-parallel converter converts an input bit stream to parallel binary vectors. A bit/symbol mapper generates modulator input symbols by combining the bits of the binary vectors. A modulator modulates the modulator...

20060056537 - Multiple qam modulation device, multiple qam demodulation device, and communication method using gain-difference multiplexing: A multiplexing QAM apparatus according to the invention is provided with a QAM unit and a modulated waves combining unit. The QAM unit generates plural QAM-modulated waves by QAM-modulating plural input data (including a case of data obtained by dividing a single piece of input data) using a common carrier...

20060056539 - Differential space-time block coding apparatus with high transmission rate and method thereof: Disclosed is a differential space-time block coding apparatus with a high transmission rate in a wireless communication system employing multiple transmit antennas and a method thereof. The differential space-time block coding method includes the steps of, when elements of a transmission matrix B43v are transmitted in a predetermined block (a...

20060056540 - Dynamic pilot subcarrier and data subcarrier indexing structure for wireless mimo communication systems: The present invention provides a subcarrier index coordinator for use with a multiple-input, multiple-output (MIMO) transmitter having N transmit antennas, N being at least two, wherein each employs a plurality of transmit symbols with used subcarriers. The subcarrier index coordinator includes a subcarrier index generator configured to generate a set...

20060056542 - Delay line for multiple propagation paths reception: The present invention relates to a delay line (D LINE) for delaying an input sig al, said input signal comprising a series of samples (IN TIME, LATE, VOID). The nvention is characterized in that it is intended to delay the input signal by a eries of delays and that the...

20060056541 - Improving hierarchical 8psk performance: A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8PSK signal, are disclosed. An exemplary method includes demodulating and processing (502) the hierarchically modulated signal (202) to produce symbols (212) from the first modulation at the first hierarchical level, applying information (504) from a...

20060056544 - Method and device for delay-sensitive measurement of a signal: The present invention relates to a method for detecting the amplitude and/or phase position of an at least partly intensity-modulated signal (PE(t)), and a corresponding device for carrying out the method. In order to provide a method and a device which make it possible to avoid the disadvantages of the...

20060056543 - Radio pre-recording apparatus and its method: A radio pre-recording apparatus and its method is proposed. In the prior art, the important portion of the radio program is usually truncated partially during recording because the recording button isn't pressed in time. For solving this problem, the radio pre-recording apparatus of the present invention has a radio frequency...

20060056545 - Signal processing system and method having increased bandwidth: The invention is a signal processing system and method having increased bandwidth. An embodiment of the invention is a method of processing an analog input signal. The analog input signal is split into a first set of signals. The first set of signals are filtered. The first set of signals...

20060056546 - Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof: To detect phase mismatches between in-phase and quadrature signals of a quadrature demodulator. The phase mismatches can be detected using the signals obtained by removing high frequency components of output of a multiplier by a low pass filter, the output being the product of the in-phase signals of which low...

20060056547 - Analog/digital conversion with adjustable thresholds: A device for receiving a distorted signal, in particular an optical signal converted by an opto/electrical converter, comprises an analog/digital converter (1) with adjustable thresholds and a Viterbi equalizer (10). The device further comprises a histogram estimator (13) for determining a probability density function of the distorted signal and a...

20060056548 - Control parameter setting method for control circuit in measurement control system and measuring instrument: N pieces of gains Gi are sequentially and temporarily set in a control circuit (23), and a stylus (131) is brought in contact with a workpiece (W) for conducting a temporary measurement. At this time, a sensor detection signal output from a sensor detection circuit (21) is filtered by a...

20060056549 - Methods and apparatus for canceling co-channel interference in a receiving system using spatio-temporal whitening: Methods and apparatus for canceling co-channel interference in a receiving system using spatio-temporal whitening. In some embodiments, a spatio-temporal interference canceling method, and apparatus for carrying out the method are provided which effectively cancel co-channel interference despite frequency offset between the desired signal and the interferer in a TDMA type...

20060056550 - Receiver for use in a mimo system: A receiver is provided which is operable to receive a multiple element signal resultant from a MIMO transmission. The receiver includes decoding means for identifying symbols, from a predetermined set of such symbols, carried in the signal. The decoding means is operable to estimate the corresponding bits according to a...

20060056551 - Receiver device and communication system: A communication system that sends and receives signals via each of two adjacent channels ch1 and ch2 in which interchannel interference exists, wherein the receiver device comprises a soft decision target value generation unit for each of a plurality of received bits inputted from the corresponding channel; and a soft...

20060056554 - Adaptive iq imbalance correction for multicarrier wireless communication systems: Embodiments of an adaptive in-phase (I) and/or quadrature-phase (O) imbalance correction for multicarrier wireless communication systems is generally described....

20060056552 - High performance w-cdma slot synchronisation for initial cell search with reduced hardware: Two preferred embodiments provide slot synchronization of an initial cell search Two Finite Impulse Response (FIR) filters are used to correlate the synchronization codes transmitted in the downlink (forward link). A sign bit is taken after the first FIR to significantly reduce the hardware requirements for the second FIR, and...

20060056553 - Multirate filter as well as display system and mobile telephone comprising said multirate filter: A multirate filter according to the invention comprises, a) an input unit (10) for receiving an input signal (Sin) and for providing a plurality of intermediate signals (IS1, IS2) in response to said input signal, b) a filter unit (20) coupled to the input unit (10), and c) an output...

20060056556 - Method for guaranteeing an identical message sequence in serveral data sinks: The invention relates to a method for guaranteeing an identical message sequence in several data sinks, according to which several data sources transmit data messages in parallel and independently of one another to said data sinks. To guarantee an identical message sequence, according to the invention a clock-pulse generator delivers...

20060056557 - Method of detecting the relative positioning of two signals and corresponding device: A device is for detecting a relative positioning of two clock signals including a fast clock signal and a slow clock signal. The fast clock frequency may be n times greater than a slow clock frequency, and n includes an integer greater than 1. The device includes a phase logic...

20060056555 - Syncronization signal detection apparatus and synchronization signal detection method: A synchronization signal detection apparatus and a synchronization signal detection method for improving the reading performance of an input signal after the dissolution of a defect state or the like. Under a predetermined condition after no synchronization signals from an input signal have been detected in predetermined detection periods and...

20060056558 - Method and apparatus for adjusting phase of sampling frequency of adc: A method for adjusting a phase of a sampling frequency of ADC is disclosed. The method includes converting an analog signal into a first digital signal according to a first phase of the sampling frequency during a first time interval; calculating a first value according to the first digital signal;...

20060056560 - Method and apparatus for synchronizing internal state of frequency generators on a communications network: A first level of control over operation of slave Digitally Controlled Frequency Selectors (DCFSs), such as DCOs or DDSs, may occur by periodic transmission of control words from the master clock to the slave clocks. To allow enhanced control over the output of the slave clocks, the frequency of the...

20060056559 - System and method for coordinating the actions of a plurality of devices via scheduling the actions based on synchronized local clocks: A system and method are provided which coordinate the actions of a plurality of devices via scheduling occurrence of the actions based on synchronized local clocks of the devices. Thus, a plurality of devices are communicatively coupled via a communication network, and the devices have their local clocks synchronized to...

20060056564 - Clock and data recovery circuit: A clock and data recovery circuit that tracks the frequency and phase fluctuation of serial data includes a feedback controller for monitoring tracking speed of an extraction clock with respect to the frequency and phase fluctuation of the serial data and applying feedback control to an integrator adaptively and moment...

20060056565 - Frequency synthesizer, pulse train generation apparatus and pulse train generation method: A frequency synthesizer comprises a digital/analog converter which sequentially converts difference data of phase data indicating the phase of a reference signal to an analog value, a voltage signal generator which integrates the analog value converted by the digital/analog converter, thereby generating a voltage signal interpolating between signal levels corresponding...

20060056561 - Jitter self test: Jitter is measured by receiving a first reference signal at a first phase-locked loop (PLL) circuit and generating at an output of the first phase-locked loop circuit an output signal based at least in part on the first reference signal, the output signal including a jitter component to be measured....

20060056563 - Method and apparatus for synchronizing clock timing between network elements: Network elements may be synchronized over an asynchronous network by implementing a master clock as an all digital PLL that includes a Digitally Controlled Frequency Selector (DCFS), the output frequency of which may be directly controlled through the input of a control word. The PLL causes the control word input...

20060056562 - Spread spectrum clock generator and method of generating spread spectrum clock: A clock circuit for generating a spread spectrum clock signal with reduced amplitude electromagnetic interference (EMI) spectral components is provided where the clock circuit includes a delay line circuit, the delay line circuit providing a spread spectrum clock signal from a reference clock signal in response to a modulation signal,...

20060050771 - Radio communication apparatus, radio base station, radio network controller, and transmission power control method: To enable transmission power control (outer loop control) considering changes (for example, changes in encoding gain and number of diffusions or the like) in durability for transmission error. The radio communication apparatus for controlling a target quality of a received signal used for the inner loop power control with outer...

20060050770 - Receiver structures for spatial spreading with space-time or space-frequency transmit diversity: A receiving entity obtains received symbols for a data transmission having at least one data symbol stream sent with space-time transmit diversity (STTD). The receiving entity derives an overall channel response matrix in accordance with the STTD encoding scheme used for the data transmission, derives a spatial filter matrix based...

20060050772 - Wireless clock system and method: A wireless clock system includes a master clock or other master time source, and a plurality of slave clocks or repeater devices. Each slave clock can both wirelessly receive and wirelessly transmit time signals including current time data. To avoid conflicts among the slave clocks, each slave clock transmits time...

20060050773 - Receiving apparatus and method for receiving and processing spread spectrum radio signals: There is provided a receiving apparatus receiving and processing spread spectrum radio signals comprising a plurality of antenna branches, a selective combiner circuit, an evaluation circuit and a control circuit. Each antenna branch is configured to be switched between active and inactive. The evaluation circuit evaluates signals demodulated by each...

20060050774 - Method and device for estimating the transfer function of a channel for the variable transmission of a multicarrier signal: The method of estimating the transfer function of a varying transmission channel for a multicarrier signal (A) is performed on the basis of a frequency-domain digital signal (Y) corresponding to the received signal, and it comprises a step (6) of calculating the value of a first estimated transfer function (C1)...

20060050775 - Method for detecting random access of user equipment: The present invention discloses a method for detecting random access of User Equipment (UE), applicable to a mobile communication system consisting of at least one Base Station (BS) and a group of UEs; wherein the BS and the group of UE use a set of N (N is a positive...

20060050776 - Vdsl system based on dmt line coding, and method for determining length of cyclic prefix samples using the system: Disclosed is a VDSL (very high bit-rate digital subscriber line) system on the DMT line coding method basis and a method for determining a length of cyclic prefix samples using the system. The VDSL system comprises a transmitter data including cyclic prefix samples through a channel; a receiver for receiving...

20060050777 - Wide window decoder circuit for dual phase pulse modulation: A dual phase pulse modulation (DPPM) decoder circuit processes a DPPM signal, which is in the form of a series of high and low pulses whose pulse widths represent successive groups of M data bits, so as to recover data carried by the signal. Each of the 2M possible data...

20060050782 - Moving picture coding apparatus and coded moving picture editing apparatus generating moving picture data renderable at plural frame rates: A moving picture coding apparatus includes a storing unit that stores an occupancy of a coded picture storing area in which a renderer temporarily stores coded moving picture information received at rendering of the coded moving picture information at a frame rate; a modifying unit that modifies the occupancy based...

20060050779 - Pattern detection device: To realize a pattern detection apparatus enabling to set a hardware resource holding a detection pattern and a detection position adequately and enabling to reduce overhead of processing after pattern detection in the case of performing pattern detection in response to a comparison result of detection target data and an...

20060050781 - Robust mode staggercasting storing content: A method and apparatus for storing staggercasted content includes encoding a set of signals representing content. The set of signals is capable of being decoded to produce a corresponding set of decoded signals, each decoded signal having a quality different from the qualities of the decoded signals corresponding to the...

20060050780 - Robust mode staggercasting with adjustable delay offset: A method and apparatus for staggercasting includes encoding a first signal representing content having a time duration and a second signal also representing that content. A time delay period is specified for the time duration of the content. A composite signal, comprising the first and second encoded signals, is generated....

20060050778 - Video-encoding and video-encoding control method: A video-encoding device that can achieve seamless connection without causing an error in a VBV buffer is provided. Recording-mode determination means for determining an initial value of the occupied amount of a virtual buffer based on a determination result relating to seamless connection between a preceding chapter and the following...

20060050785 - Inserting a high resolution still image into a lower resolution video stream: A high resolution still image is inserted into a stream of lower resolution video. The lower resolution video stream is a compressed video stream having I-frames. One of the I-frames is a lower resolution version of which a higher resolution image is desired. The I-frame is decoded and decompressed and...

20060050784 - Method and device for transcoding images: A method and device for transcoding digital images where at least portions of a first image coded according to a first method is decoded for obtaining first coefficients of a luminance component and chrominance components of the first image, where the chrominance components are subjected to a combined inverse quantization...

20060050786 - Moving picture coding apparatus and computer program product: A moving picture coding apparatus includes a prediction signal generating unit that generates a prediction signal for each coding mode from an input image of an interlaced moving picture and a reference image to generate a prediction error signal; a candidate mode selecting unit that selects a candidate coding mode...

20060050788 - Method and device for computer-aided motion estimation: A method and a device for computer-aided motion estimation in at least two temporally successive digital images with pixels to which coding information is assigned are provided, the motion being estimated on the basis of the spatial distribution of feature points....

20060050787 - Method and/or apparatus for encoding and/or decoding digital video together with an n-bit alpha plane: A method for generating a compressed digital video bitstream, comprising the steps of receiving a first subsequence representing a video signal, receiving a second sub-sequence representing an alpha signal, and generating the compressed digital video bitstream in response to the first sub-sequence and the second sub-sequence. The compressed digital video...

20060050783 - Apparatus and method for adaptive 3d artifact reducing for encoded image signal: An efficient and non-iterative 3D post processing method and system is proposed for mosquito noise reduction, block localization and correction in DCT block-based decoded images. The 3D post processing is based on a simple classification that segments a picture in multiple regions such as Edge, Near Edge, Flat, Near Flat...

20060050789 - Methods and devices for encoding a digital image signal and associated decoding methods and devices: A method of encoding a digital image signal comprising a plurality of samples. The method comprises the following steps, applied during the encoding of each sample with a view to its storage in a buffer. The level of occupancy of the buffer is determined, and the level of occupancy is...

20060050790 - Manipulating sub-pictures of a compressed video signal: The invention relates to manipulation of sub-pictures (303) in a picture such as a mosaic screen (301). An apparatus comprises a sub-picture generator (105) connected to a mosaic screen generator (107), which generates the mosaic screen (301) from the sub-pictures. The mosaic screen (301) is by a video compressor (111)...

20060050791 - Scene change detection method using two-dimensional dp matching, and image processing apparatus for implementing the method: There is provided a scene change detection method which is independent from an encoder of a file, and can assure high real-time performance and effective, quick processes, and an image processing apparatus that can implement the method. Frame image data is extracted from moving image data (S11), the frame image...

20060050792 - Method and device for processing digital images: The invention relates to a method of and a device for processing digital images. The device is such that, the images being transmitted from a server to a decoder using various modes of display, the images being coded in a dependent manner such that the coding of a first image...

20060050793 - Parameter set and picture header in video coding: In a start code based bistream structure for use in video coding, a picture header is used simultaneously with the parameter set in the start code. The picture header is present before the slice header in the same picture. As such, it is possible to allow the presence of at...

20060050794 - Method and apparatus for delivering programme-associated data to generate relevant visual displays for audio contents: An MPEG audio stream is transmitted together with an MPEG video stream. The audio stream contains an audio signal together with associated audio description data as ancillary data. The video stream contains a video signal together with video description data (e.g. video clips, stills, graphics, text etc) as private data,...

20060050795 - Joint resolution or sharpness enhancement and artifact reduction for coded digital video: The present application is a new approach for jointly controlling resolution or sharpness enhancement and artifact reduction in order to improve picture quality for coded digital video. The present application provides a joint control that is based on a metric, the metric being used to determine which pixel and by...

20060050796 - Emission device intended to be coupled with a reception device: The invention proposes a radio wave emission block intended to modify a satellite-based reception installation into a cheaper emission/reception installation. The emission block comprises a first input/output terminal and a second input/output terminal electrically linked to the first input/output terminal by way of a band rejection filter which rejects the...

20060050797 - Signal transmission structure: A signal transmission structure includes a driving circuit block, a receiving circuit block, a main transmission line, and a radial patch. The main transmission line connects the driving circuit block to the receiving circuit block. The radial patch is formed between the driving circuit block and the main transmission line....

20060050798 - Apparatus, system, and method for managing transmission power in a wireless communication system: An apparatus, system, and method efficiently manage transmission power in a user equipment (UE) device by maintaining and applying an authorized power level to determine a transmission power level after a power limited transmission and before a new power control command has been received. The UE device maintains the authorized...

20060050802 - Channel estimation method in a mimo wireless communication system: A channel estimation method in a Multiple Input Multiple Output (MIMO) mobile communication system having a plurality of transmission antennas and a plurality of reception antennas is provided. In a method of transmitting, by a transmitter, channel estimation signals for channel estimation at a receiver, the transmission antennas transmit the...

20060050800 - Packet detection in time/frequency hopped wireless communication systems: Systems and methods for packet detection for frequency hopping networks. Multiple receiver chains are set to different frequencies to check for packets at the different frequencies, at least until receipt of a preamble sequence in a packet is received. After detection of a packet at least some of the receiver...

20060050801 - Synchronisation in a receiver: A radio receiver is suitable for use in an OFDM wireless communications system, in which it is necessary to identify a timing point at a start of a frame. In order to ensure optimum performance of the receiver in multipath environments, it should be synchronised with the first received multipath...

20060050799 - Transmission and reception of reference preamble signals in ofdma or ofdm communication systems: Techniques for generating preamble sequences for OFDM and OFDMA communication systems based on CAZAC sequences with desired properties of constant amplitudes (CA) and zero autocorrelation (ZAC). Such preamble sequences may be used for synchronization and identification of individual transmitters. For example, the OFDMA symbol is constructed using a CAZAC sequence...

20060050803 - Transmission system: A transmission system for transmitting data over a channel in the form of a digital signal comprising bits of data, the system comprising an encoder for encoding the data prior to transmission, the encoder producing coding in the form of an overhead, and a decoder for decoding the data after...

20060050804 - Method for decoding linear space-time codes in a multiple-antenna wireless transmission system and decoder therefor: An iterative method and a decoder for decoding space-time codes in a communication system with multiple transmission and reception antennae, strikes a compromise between techniques based on interference cancellation algorithms such as BLAST, which show faulty performance concerning error rate based on signal-to-noise ratio and techniques based on maximum likelihood...

20060050807 - Bandwidth reduction of an fm broadcast signal using a baseband precompensation technique: A method of processing a baseband multiplex signal comprises the steps of frequency modulating the baseband multiplex signal to produce a first modulated signal, filtering the first modulated signal to produce a first filtered signal, demodulating the filtered signal to produce a demodulated baseband multiplex signal, correcting the demodulated baseband...

20060050808 - Data transmission: A data communication transmitting node is provided, the transmitting node comprising: a plurality of buffers for storing data from a respective plurality of input data streams; means for monitoring an occupancy level of each of the plurality of buffers to detect if the occupancy level is sufficient to provide a...

20060050806 - Digital baseband transmitter with digital rf/if support in gsm/gprs/edge compliant handsets: Certain aspects of a digital baseband transmitter with digital RF/IF support in GSM/GPRS/EDGE compliant devices may comprise receiving digitized data within a chip. A control signal may be generated within the chip indicating whether the received digitized data is to be processed by an IF processing interface or a digital...

20060050805 - Method and apparatus for layered modulation: Improvements to a layered modulation (LM) implementation are disclosed. The present invention discloses two implementations of LM, using single and multiple transponders per signal frequency, respectively. Layered hierarchical 8PSK (H-8PSK) is a special case of LM. By re-encoding the high-priority (HP) portion of an H-8PSK signal, LM can improve carrier-to-noise...

20060050810 - Hybrid transmitter architecture having high efficiency and large dynamic range: An adaptive hybrid transmitter architecture for use in a communication unit which dynamically adapts to maximize efficiency, delivers a large dynamic range and provides good distortion performance depending upon the required output power of the transmitter. In the upper portion of the operating range, the hybrid transmitter operates in a...

20060050809 - System and method for reducing phase distortion in a linear transmitter via the introduction of bias currents to a power amplifier: The invention decreases phase distortion in a transmitter by balancing C load in the power amplifier input such that a PGA won't have phase distortion....

20060050811 - Shared frequency transmitter: A shared frequency transmitter for use in a network environment where transmitters and receivers of plural radio communication systems in which the same frequency is used exist is disclosed. The shared frequency transmitter includes (a) a communicating unit configured to detect peripheral transmitters existing in a peripheral area, and to...

20060050812 - System and method for transitioning between modulation formats in adjacent bursts triggering on data flow: A system and method are provided for transitioning between modulation formats in adjacent transmit bursts. The system includes a modulation system having a data interface, first modulation circuitry operating according to a first modulation format, and second modulation circuitry operating according to a second modulation format. During a transition between...

20060050814 - Decoding apparatus and method of optical information reproducing system: The invention discloses a decoding apparatus and the method thereof for decoding a signal retrieved by an optical information reproducing system from an optical information recording medium. N legal codes are predetermined. According to the invention, first, the retrieved signal is converted into a data stream. Then, in a Viterbi...

20060050813 - Method and system for decoding video, voice, and speech data using redundancy: A method and system for decoding video, voice, and/or speech data using redundancy and physical constraints are presented. Video, voice, and/or speech bit sequences may be decoded in a multilayer process based on a decoding algorithm and at least one physical constraint. Fog voice applications, the decoding algorithm may be...

20060050815 - Apparatus, module and computer program for minimizing correlation between signals: An apparatus that comprises means to simultaneously receive a first number of signals and a larger number of signal pathways comprises means to determine the correlation between first said number of signals for each of the possible signal pathways. The apparatus also comprises means to select from said second number...

20060050816 - Pipeline architecture for multi-slot wireless link processing: A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF from end...

20060050817 - Receiving apparatus and receiving method: A reception apparatus that performs AGC processing on signals received in an antenna with a plurality of branches. In this apparatus, at the time a power calculation section (141) has completed calculation of a power value and an AGC gain calculation section (105) has completed gain calculation, an operation timing...

20060050818 - Method for synchronizing an equalizer output data: A method for synchronizing symbols at the output of a blind equalizer, the method being characterized by the following steps: on sending, inserting into a succession of sent symbol