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Carrier tracking circuit and method including dual numerically controlled oscillators and feedforward phase correction coefficient

Patent Number: RE43131
Publication Date: 2012-01-24
Inventors: Shearer, III, Daniel Davidson MacFarlane; Seals, Michael J.

A carrier tracking circuit includes a first phase adjustment circuit coupled to an input of a delay element and a second phase adjustment circuit coupled to an output of the delay element. A phase correction circuit is coupled to output of the delay element is operable to generate a phase adjustment value based upon a data symbol output from the delay element. The phase correction circuit includes a double phase correction circuit to prevent double application of the same phase adjustment ...

Method and apparatus for encoding interlaced macroblock texture information

Patent Number: RE43130
Publication Date: 2012-01-24
Inventor: Lee, Sang-Hoon

A method for padding interlaced texture information on a reference VOP to perform a motion estimation detects whether said each texture macroblock of the reference VOP is a boundary block or not. After the undefined texture pixels of the boundary block are extrapolated from the defined texture pixels thereof by using a horizontal repetitive padding, a transparent row padding and a transparent field padding sequentially, an undefined adjacent block is expanded based on the extrapolated ...

Method and apparatus for encoding interlaced macroblock texture information

Patent Number: RE43129
Publication Date: 2012-01-24
Inventor: Lee, Sang-Hoon

Picture signal transmitting method and apparatus

Patent Number: RE43111
Publication Date: 2012-01-17
Inventors: Tahara, Katsumi; Yoshinari, Hiromi

A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included with a picture signal when the signal is encoded and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture ...

Frequency ratio detection

Patent Number: 8111800
Publication Date: 2012-02-07
Inventor: Clovis, Philip Michael

A system and method are provided for determining a frequency ratio in a phase-locked loop (PLL) circuit feedback path. The method accepts a reference signal having a predetermined first frequency and a PLL output signal having a non-predetermined second frequency. The reference signal cycles are counted, creating a first binary count. Likewise, the PLL output signal cycles are counted, creating a second binary count. The second binary count is sampled at an interval responsive to the first ...

Method, system and apparatus for reducing power consumption at low to midrange resolution settings

Patent Number: 8111799
Publication Date: 2012-02-07
Inventors: Lee, Jae-Ik; Goodart, Joe Edgar

A method for reducing power consumption in an information handling system (IHS) where the method includes receiving main data through a main link, wherein the main link provides at least one data lane. The IHS also receives a reference clock corresponding to the main data through an auxiliary channel and provides the reference clock to a first phase-lock loop, wherein the first phase-lock loop outputs a stream ...

Phase synchronization circuit and receiver having the same

Patent Number: 8111798
Publication Date: 2012-02-07
Inventor: Sai, Akihide

A phase synchronization circuit includes a controlled oscillator configured to generate a first oscillation signal and a second oscillation signal that have a common frequency but different phase controlled by a combination of a first control signal and a second control signal, a digital phase frequency detector configured to detect a frequency difference and a first phase difference between a reference signal and the first oscillation signal to generate the first control signal, an analog ...

Enhanced system and method for detecting the leading edge of a waveform

Patent Number: 8111797
Publication Date: 2012-02-07
Inventors: Dodoukh, Irina; Barnes, Mark A.

The present invention is an improved system and method for detecting the leading edge of a waveform. More specifically, the invention relates to detecting the leading edge of an ultra wideband waveform. The invention requires locking to the ultra wideband waveform at a lock reference time, and sampling the ultra wideband waveform during one or more time windows relative to the lock reference time to identify one or more leading edge candidate times based on one or more detection criterion. ...

Method and system for switching between two (or more) reference signals for clock synchronization

Patent Number: 8111796
Publication Date: 2012-02-07
Inventor: McShea, Matthew Duane

An apparatus and method is disclosed for synchronizing a timing signal for a computational system to different reference clock signals without impairing the operation of the computational system. A corresponding “offset” register is provided for each of the reference clock signals (RCS) for storing signal timing differences between the timing signal and RCS. When one of the reference clock signals not used for synchronizing the timing signal, is selected as the signal for synchronizing ...

Method and system for a multi-channel signal synchronizer

Patent Number: 8111795
Publication Date: 2012-02-07
Inventor: Klingler, Keith L.

Certain aspects of a multi-channel signal synchronizer may comprise receiving a plurality of clock signals from a plurality of clock signal sources, wherein a portion of the received plurality of clock signals may be out of synchronization with a remaining portion of the received plurality of clock signals. A plurality of data signals may be received from a plurality of data signal sources, wherein a portion of the received plurality of data signals may be out of synchronization with a ...

Data synchronizer for synchronizing data and communication interface including the same

Patent Number: 8111794
Publication Date: 2012-02-07
Inventor: Myouga, Nobuyuki

According to one embodiment, a data hold module is configured to receive first data synchronized with a first clock signal on the basis of a second timing signal and output second data obtained by synchronizing the received first data with a second clock signal differing from the first clock signal in frequency. A reception timing generator is configured to generate a timing signal synchronized with the second clock signal as the second timing signal on the basis of a first timing signal ...

System and method for adjacent channel power detection and dynamic bandwidth filter control

Patent Number: 8111793
Publication Date: 2012-02-07
Inventors: Young, James P.; Shi, Ying

A system for detecting and minimizing interference in a radio receiver includes a plurality of bandpass filters having different response characteristics, a power detector configured to compare a power output of a first bandpass filter and a second bandpass filter, and logic to cascade a third bandpass filter when the difference in power output between the power output of the first bandpass filter and the power output of the second bandpass filter exceeds a threshold ...

Apparatus and methods for digital adaptive equalizer in serial receiver

Patent Number: 8111792
Publication Date: 2012-02-07
Inventor: Ou, Chiung-Ting

Circuits and methods for performing adaptive frequency compensation in a serial receiver coupled to a differential signal channel link are disclosed. In an exemplary embodiment, a receiver for signals over a serial channel link is provided including a linear equalization function. A data recovery circuit is coupled to the output of the receiver and receives frequency compensated analog signals. A digital feedback control circuit observes the digital output. A data accumulator circuit ...

Differential evolution design of polyphase IIR decimation filters

Patent Number: 8111791
Publication Date: 2012-02-07
Inventor: Sturza, Mark Alan

A method for designing a digital filter, includes: (a) selecting a predetermined number of current sets of coefficients for the digital filter; (b) selecting a metric for evaluating coefficients of the digital filter; (c) computing a metric for each current set of coefficients; (d) deriving a next set of coefficients based on a subset of the current set of coefficients; (e) computing the metric for the next set of coefficients; (f) replacing a selected one of the current set of coefficients ...

Mitigating interference in a coded communication system

Patent Number: 8111790
Publication Date: 2012-02-07
Inventors: Brannstrom, Fredrik; Farrokhi, Farrokh; Rezvani, Behrooz; Goldsmith, Andrea

A technique weights noise power used in a demodulation/demapping process using on an estimate of interference and its associated power. Using this technique the effect of partial interference can be ameliorated. For example, a value, σ², can be used to represent the estimated noise and interference power, and σ²can be used to modify a received signal to ameliorate the effects of noise and interference. σ²can be adjusted in response to partial ...

Method and system for channel estimation in a single channel MIMO system with multiple RF chains for WCDMA/HSDPA

Patent Number: 8111789
Publication Date: 2012-02-07
Inventors: Van Rooyen, Pieter; Kent, Mark; Erceg, Vinko; Landau, Uri M.

Aspects of a method and system for channel estimation in a MIMO communication system with multiple RF chains for WCDMA/HSDPA may comprise receiving a plurality of communication signals from a plurality of transmit antennas. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of communication signals. A matrix of processed baseband combined channel estimates may be generated based on the generated plurality of ...

Apparatus for estimating and correcting baseband frequency error in a receiver

Patent Number: 8111788
Publication Date: 2012-02-07
Inventors: Yang, Rui; Beluri, Mihaela C.; Demir, Alpaslan; Pietraski, Philip J.

An apparatus for estimating and correcting baseband frequency error in a receiver is disclosed. An equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the ...

OFDM channel estimation method and apparatus

Patent Number: 8111787
Publication Date: 2012-02-07
Inventors: Guey, Jiann-Ching; Koorapaty, Havish

Smaller patterns of regularly-spaced pilot symbols are discerned from a larger pattern of irregularly-spaced pilot symbols transmitted in the time-frequency domain. Accordingly, the irregularly-spaced pilot symbols can be partitioned into at least two different groups of regularly-spaced pilot symbols in the time-frequency domain. Each group of regularly-spaced pilot symbols is individually processed with lower complexity and the results combined to generate an accurate time-frequency ...

Signal converters

Patent Number: 8111786
Publication Date: 2012-02-07
Inventors: Huang, Ho-Chi; Tseng, Ting-Che; Hsieh, Chin-Yang

A signal converter. The signal converter converts an analog inphase signal and an analog quadrature phase signal into a digital baseband inphase signal and a digital baseband quadrature phase signal. The analog inphase signal and the analog quadrature phase signal are orthogonal to each other and are carried in a predetermined intermediate frequency. The digital baseband inphase signal and the digital baseband quadrature phase signal are carried in zero frequency. The signal converter ...

Auto frequency acquisition maintenance in a clock and data recovery device

Patent Number: 8111785
Publication Date: 2012-02-07
Inventors: Do, Viet Linh; Pang, Simon; Clovis, Philip Michael; Eker, Mehmet Mustafa; An, Hongming; Hellmer, Michael

A system and method are provided for automatic frequency acquisition maintenance in a clock and data recovery (CDR) device. In an automatic frequency acquisition (AFA) mode, the method uses a phase detector (PHD) to acquire the phase of a non-synchronous input communication signal having an initial first frequency. In the event of a loss of lock/loss of signal (LOL/LOS) signal being asserted, a frequency ratio value is retrieved from memory. Using a phase-frequency detector (PFD), the ...

On-chip data signal eye monitoring circuitry and methods

Patent Number: 8111784
Publication Date: 2012-02-07
Inventors: Wong, Wilson; Shumarayev, Sergey; Ding, Weiqi; Pan, Mingde; Li, Peng

Methods and apparatus for gathering information about the eye of a high-speed serial data signal include sampling each bit of a repeating, multi-bit data pattern at several eye slice locations. For any given eye slice location, each bit in the data pattern is compared in voltage to a base line reference signal voltage to establish a reference value for that bit. Then the reference signal voltage is gradually increased while the voltage comparisons are repeated until for some bit a result of ...

Capturing and using radio events

Patent Number: 8111783
Publication Date: 2012-02-07
Inventors: Tesfai, Yohannes; Vaidyanathan, Chandra; Kloper, David

In one embodiment a method includes, collecting in-phase/quadrature (I/Q) data representing energy detected by a radio in a frequency band, performing a fast Fourier transform (FFT) on the I/Q data resulting in a stream of FFT blocks, identifying using the stream of FFT blocks a pulse in the frequency band, recording in a radio events record (RER) a plurality of radio events and corresponding timestamps that are indicative, respectively, of a type and time of individual state changes in the ...

Apparatus and method for transmitting/receiving data in a multi-antenna system, and system using the same

Patent Number: 8111782
Publication Date: 2012-02-07
Inventors: Cho, Jae-Hee; Hwang, Keun-Chul; Moon, June; Zhou, Yongxing; Kim, Sung-Jin

A data reception apparatus and method for generating and transmitting feedback information in a multi-antenna system using grouped antennas, and a data transmission apparatus and method for transmitting a data stream of a user according to a transmission mode selected depending on the feedback information is disclosed. The reception apparatus generates feedback information depending on maximum channel quality information, an antenna group index associated with the maximum channel quality ...

Radio frequency identification (RFID) interrogators

Patent Number: 8111781
Publication Date: 2012-02-07
Inventor: Chang, Hsu-Hung

An RFID interrogator includes a signal processing module for converting a transmission signal transmitted from an RFID tag into an input signal; a first matched filter coupled to the signal processing module for generating a first matched signal according to the input signal and a first predetermined signal pattern; a second matched filter coupled to the signal processing module for generating a second matched signal according to the input signal and a second predetermined signal pattern; a ...

Codebook generating method and apparatus for generating a codebook for multi-polarized multiple-input multiple-output (MIMO) systems

Patent Number: 8111780
Publication Date: 2012-02-07
Inventors: Clerckx, Bruno; Chung, Goo Chul; Zhou, Yongxing

A communication apparatus and method include: selecting, as a precoding matrix, one of pre-stored at least one matrix W_i, where i is a natural number, and precoding a data stream desired to be transmitted based on the precoding matrix, wherein each diagonal block, among a plurality of blocks included in each of the at least one matrix W_i, includes a nonzero matrix, the nonzero matrix excluding a zero matrix, and wherein each remaining block among the plurality of ...

Data transmission in wireless communication system

Patent Number: 8111779
Publication Date: 2012-02-07
Inventors: Rajan, Balaji Sundar; Srinath, Pavan Koteshwar

Embodiments of the disclosure set forth methods for transmitting data in a wireless communication system. Some example methods include converting a data stream to a symbol set and selecting a first plurality of symbols from the symbol set. The first plurality of symbols includes at least a first symbol, a second symbol, a third symbol, a fourth symbol, a fifth symbol, a sixth symbol, a seventh symbol, and a eighth symbol. The methods include generating one or plurality of symbols of a ...

Method for suppressing peak power of orthogonally multiplex signal, peak power suppressing circuit, and transmitter

Patent Number: 8111778
Publication Date: 2012-02-07
Inventors: Naito, Masashi; Hayase, Shigenori; Yano, Takashi

To suppress the peak of the orthogonal multiplex transmission signal which is small in deterioration of the quality of the reception signal by generating the cancellation waveform in synchronization with the timing of the symbol of the transmission signal. There is provided a peak suppressing method that suppresses peaks of an orthogonally multiplexed signal whose orthogonality is ensured in given time units, the method comprising: a first step of detecting the peaks of the orthogonally ...

Method, apparatus and system for high-speed transmission on fiber optic channel

Patent Number: 8111777
Publication Date: 2012-02-07
Inventor: Agazzi, Oscar E.

Multi-carrier modulation fiber optic systems constructed using a series of electrical carriers, modulating the data on the electrical carriers and combining the carriers to form a wideband signal. The wideband signal can then be intensity modulated on a laser and coupled to a fiber optic channel. A receiver may then receive the laser signal from the fiber optic channel and convert it into an electrical signal. Multi-carrier modulation may be applied to existing fiber channels, which may be ...

Pulse insertion systems and methods for polar modulation

Patent Number: 8111776
Publication Date: 2012-02-07
Inventor: Crawford, James A.

Systems and methods for bandwidth reduction in polar modulation systems are described. Detection of problematic signal transition paths may performed, and then, dependent on the signal path, a correction signal may be generated and added to the signal to improve system performance. In typical implementations, detection of problematic signal paths may be performed by determining whether the signal transitions through a particular region in the signal constellation, such as a region about the ...

Communication device adopted for multi-input multi-output orthogonal frequency division multiplexing system and method thereof

Patent Number: 8111775
Publication Date: 2012-02-07
Inventors: Sang, Tzu-Hsien; Chang, Yu-Jen

A communication device adopted for a multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) system and a method thereof are provided. The MIMO-OFDM system comprises the communication device and a corresponding communication device, and they communicate with each other. The communication device comprises a transceiving module, a singular value decomposition (SVD) operation module, and an interpolation operation module. The transceiving module receives a channel state ...

Method for transmitting/receiving signal in MIMO system

Patent Number: 8111774
Publication Date: 2012-02-07
Inventors: Lee, Hee-Joung; Shim, Dong-Hee; Huh, Kang-Suk

Disclosed is a method for transmitting a signal in a mobile communications system using a plurality of transmit/receive antennas. A method for transmitting a signal in accordance with an embodiment of the present invention comprises the steps of: a receiving end's calculating a signal to interference noise ratio (SINR) with respect to every antenna pairs configuring STTD pairs to be transmittable from a transmitting end; feedbacking information indicating an antenna pair having the greatest ...

Transmission method for multiple antenna system

Patent Number: 8111773
Publication Date: 2012-02-07
Inventors: Kim, Young-Han; Bahk, Sae-Woong; Ryoo, Sun-Heui

A transmission method for a multiple antenna system including a first device having M (>1) transmitting antennas and a second device having N (>1) receiving antennas is disclosed. The method includes determining whether there is a multiple-input multiple-output (MIMO) transmission scheme satisfying a condition that it consumes less energy than a single-input single-output (SISO) transmission scheme to transmit a frame at a given transmission power, among one or more MIMO transmission ...

Method and apparatus for multi-antenna transmitting based on spatial-frequency encoding

Patent Number: 8111772
Publication Date: 2012-02-07
Inventors: Liu, Jianghua; Chen, Lina; Jiang, Peigang

The present disclosure relates to communication technologies and discloses a method and apparatus for multi-antenna transmitting based on spatial-frequency encoding. The method includes: performing spatial-frequency encoding on input data and outputting encoded data; mapping the encoded data to the same sub-carrier of each antenna in an antenna group; adding a phase shift to the encoded data on different sub-carriers of each antenna; OFDM-modulating the phase-shifted encoded data on each ...

Wireless communication apparatus and method using beamforming

Patent Number: 8111771
Publication Date: 2012-02-07
Inventor: Fujii, Masaaki

A wireless transmitting method includes calculating a beamforming channel matrix which is a channel matrix generated at a time when a transmitting apparatus applies a beamforming matrix to a data signal and transmits the data signal to receiving apparatuses, selecting a parameter to be used while transmitting the data signal based on the beamforming channel matrix and noise information fed back from the receiving apparatuses, and transmitting the data signal by using the selected ...

High-bandwidth over-the-air signal processing

Patent Number: 8111770
Publication Date: 2012-02-07
Inventors: Moon, Jaekyun; Jin, Hui

An electronic MIMO-OFDM carrier frequency recovery method is disclosed. The method includes receiving a wirelessly propagated time-domain signal observation, estimating a data-channel vector from a latest observation vector by correcting for a phase rotation effect based on an initial estimate or an up-to-date estimate of a phase rotation term, removing an effect associated with the data-channel vector from the latest observation vector using the estimated data-channel vector to obtain an ...

Transmissions with reduced code rate in 8VSB digital television

Patent Number: 8111769
Publication Date: 2012-02-07
Inventor: Limberg, Allen LeRoy

Procedures performed prior to convolutional interleaving of 8VSB digital television signals restrict the alphabet of symbols in novel methods of generating trellis-coded digital television signals that include more robust symbol coding using a restricted alphabet of symbols selected from a full 8VSB symbol alphabet consisting of −7, −5, −3, −1, +1, +3, +5 and +7 normalized modulation levels superposed on a background modulation level. Certain of these novel procedures generate ...

Digital broadcast transmitter/receiver having an improved receiving performance and signal processing method thereof

Patent Number: 8111768
Publication Date: 2012-02-07
Inventors: Park, Eui-jun; Ji, Kum-ran; Kwon, Yong-sik; Kim, Joon-soo; Jeong, Jin-hee; Yu, Jung-pil; Kim, Jong-hun

A digital broadcast transmitting/receiving system, and a signal processing method thereof, includes a randomizer for randomizing a transport stream into a specified position of which stuff bytes are inserted, a stuff-byte exchanger for replacing the stuff bytes included in data output from the randomizer with specified known data, an RS encoder for performing an RS-encoding of data output from the stuff-byte exchanger, an interleaver for interleaving data output from the RS encoder, a ...

Adaptive sliding block Viterbi decoder

Patent Number: 8111767
Publication Date: 2012-02-07
Inventors: Gezici, Sinan; Duan, Chunjie; Zhang, Jinyun; Garg, Rajesh

An adaptive sliding block Viterbi decoder (ASBVD) includes forward and backward Viterbi processors, a state estimator and a control unit. The processors generate metrics of states and of transitions between the states associated with an encoder, based on encoded input information symbols received via a communications channel. Each processor includes a plurality of buffers for storing information symbols so that a number of the encoded input information symbols can be concurrently decoded. ...

Radio parameter group generating apparatus, transmitter and receiver

Patent Number: 8111766
Publication Date: 2012-02-07
Inventors: Ofuji, Yoshiaki; Kishiyama, Yoshihisa; Sawahashi, Mamoru; Higuchi, Kenichi; Tanno, Motohiro; Atarashi, Hiroyuki

An apparatus for generating sets of radio parameters includes a first deriving unit deriving a set of radio parameters for specifying a symbol including an effective symbol part with the same period as the effective symbol part specified by another set of radio parameters and a guard interval part with a different period from the guard interval part specified by the other set of radio parameters. The apparatus further includes a second deriving unit deriving a set of radio parameters so ...

Communication apparatus, communication method, and integrated circuit

Patent Number: 8111765
Publication Date: 2012-02-07
Inventors: Koga, Hisao; Kodama, Nobutaka

A communication apparatus for transmitting transmission data containing a preamble and a postamble is provided. The communication apparatus includes: a phase vector assigning unit which assigns a first phase vector to a plurality of subcarriers relating to the preamble and assigns a second phase vector to a plurality of subcarriers relating to the postamble, the first phase vector being different from the second phase ...

Method for transmitting channel quality information

Patent Number: 8111764
Publication Date: 2012-02-07
Inventors: Chang, Jae Won; Chun, Jin Young; Ihm, Bin Chul

There is provided a method for transmitting channel quality information in a wireless communication system. Over-all band of the wireless communication system is divided by a plurality of sub-bands. The method includes selecting a first sub-band having the highest CQI among the plurality of sub-bands, transmitting CQI of the first sub-band and transmitting CQI of a second sub-band, the second sub-band having the CQI lower than the first sub-band, wherein the number of CQI levels of the ...

Methods and systems for OFDM using code division multiplexing

Patent Number: 8111763
Publication Date: 2012-02-07
Inventors: Fong, Mo-Han; Xu, Hua; Zhu, Peiying; Ma, Jianglei; Jia, Ming; Tong, Wen; Zhang, Hang

In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the ...

Radio transmission apparatus, radio reception apparatus, radio transmission method, and radio reception method

Patent Number: 8111762
Publication Date: 2012-02-07
Inventors: Miyoshi, Kenichi; Nishio, Akihiko

A radio transmission device capable of improving channel estimation precision for each frequency. In this device, an FFT unit (103) subjects a data signal to a Fourier transformation. A signal substitution unit (108) substitutes the frequency component of a portion of a plurality of frequency components composing the Fourier-transformed data signal, for a pilot signal. An IFFT unit (109) subjects the data signal, the frequency component of which has been partially ...

Method and apparatus for transmitting data and power across a transformer

Patent Number: 8111761
Publication Date: 2012-02-07
Inventor: Hershbarger, Russell

Encoding of a dual mode digital signal for transfer using a dual mode super source follower circuit to drive the signal across a pulse transformer is presented. The dual mode signal includes data in one mode and power/control in the other mode. In the power/control mode the magnitude of the signal pulses are greater than the magnitude of the data pulses. Thus, the current sinking deficiencies of the super source follower may introduce waveform irregularities when transitioning from the high ...

Deblocking filters

Patent Number: 8111760
Publication Date: 2012-02-07
Inventors: Cheung, Ngai-Man; Hung, Ching-Yu

Deblock filtering for Microsoft WMV video decoders partitions the computation so that the deblock filtering operations can be performed on horizontal or vertical stripes or in one pass on oversized ...

Method and apparatus for authoring a 24p audio/video data stream by supplementing it with additional 50i format data items

Patent Number: 8111759
Publication Date: 2012-02-07
Inventors: Hoerentrup, Jobst; Peters, Hartmut; Winter, Marco; Gandolph, Dirk; Ostermann, Ralf; Herpel, Carsten; Janssen, Uwe; Schewzow, Andrej

Movies are produced in 24 Hz frame frequency and progressive scanning format (denoted 24p) for projection in film theatres, adhering to a worldwide standard for 35 mm film. However, the major TV systems in the world use interlaced scanning and either 50 Hz field frequency (denoted 50i) or 60 Hz field frequency (denoted 60i). Content providers would prefer providing single-picture-frequency single-audio-speed AV discs that can be replayed in most parts of the world. A 24p audio/video data ...

3D stereoscopic/multiview video processing system and its method

Patent Number: 8111758
Publication Date: 2012-02-07
Inventors: Ahn, Chieteuk; Lee, Jinhwan; Choi, Yunjung; Yun, Kug-Jin; Cho, Suk-Hee

Disclosed is a stereoscopic/multiview three-dimensional video processing system and its method. In the present invention, stereoscopic/multiview three-dimensional video data having a plurality of images at the same time are coded into a plurality of elementary streams. The plural elementary streams output at the same time are multiplexed according to the user's selected display mode to generate a single elementary stream. After packetization of the single elementary stream continuously ...

Method and apparatus for video signal processing

Patent Number: 8111757
Publication Date: 2012-02-07
Inventors: May, Anthony R.; Ishtiaq, Faisal; Shanableh, Tamer

A first video signal processor (103) receives a first encoded video signal from which a video unit (201) generates a second encoded video signal, where the second encoded video signal is a reduced data rate version of the first encoded video signal. An error encoder (203) generates error redundancy data for the second encoded video signal and a multiplexer (207) generates output video data comprising the first encoded video signal and the error correcting data ...

Method for reducing computational complexity of video compression standard

Patent Number: 8111756
Publication Date: 2012-02-07
Inventors: Chang, Chun-Hao; Guo, Jiun-In; Ou Yang, Yi-Huan; Wang, Jinn-Shyan; Chen, Jia-Wei; Lin, Chien-Chang

A method for reducing computational complexity of video compression standard is provided, and it includes an intra 4×4 macroblock (I4MB) search algorithm, an intra 16×16 macroblock (I16MB) search algorithm and a chroma search algorithm. The I4MB search algorithm and I16MB search algorithm accelerate the prediction process of the luma macroblock, and the chroma search algorithm accelerates the prediction process of chroma macroblock. The above algorithms can greatly reduce the computation ...

Method and system for low-complexity Slepian-Wolf rate estimation in Wyner-Ziv video encoding

Patent Number: 8111755
Publication Date: 2012-02-07
Inventors: Jagmohan, Ashish; He, Dake

A method and system for low-complexity Slepian-Wolf rate estimator in a hybrid Wyner-Ziv video encoder determines the minimum Slepian-Wolf code rate required to allow correct decoding. The Slepian-Wolf estimator does not assume ideality of source and side-information statistics and does not require the presence of a feedback channel from the decoder to the encoder in order to determine the correct Slepian-Wolf coding rate. Instead, it adapts to the statistical properties of the video steam. ...