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7630442 |
Packet generating method, video decoding method, media multiplexer, media demultiplexer, multimedia communication system and bit stream converter
A moving image coded string is mapped with a set of information areas as one packet, and each packet is added with an error code and control information in a multiplexing part so that it is decided...
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7627042 |
System, method, and apparatus for error recovery in coded video signals
Efficient techniques are provided to detect and correct channel errors found in an encoded video signal. In one example embodiment, header and global information in a video frame is analyzed to...
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7620262 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7616833 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7616832 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7616831 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7606313 |
System, method, and apparatus for error concealment in coded video signals
Efficient techniques are provided to detect and correct channel errors found in an encoded video signal. In one example embodiment, header information in a video frame is analyzed to detect channel...
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7606314 |
Method and apparatus for caching, compressing and transmitting video signals
Disclosed is a method and apparatus for transmitting video signals from a remote computer to a local computer over a network such as a LAN, WAN, the Internet, etc. The method receives and digitizes...
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7599439 |
Method and system for transmitting N-bit video data over a serial link
A system including a receiver, a TMDS link (or other serial link), and a transmitter configured to transmit K-bit video words (typically, encoded 8-bit video words) over the link. In typical...
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7599571 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7596277 |
Apparatus and method for detecting error in a digital image
An apparatus and method for the detection of errors in compressed digital image is disclosed. In one embodiment, a signature is generated using a multiple input shift register and added to the...
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7593465 |
Method for video coding artifacts concealment
A method and circuit for processing a reconstructed picture generated from compressed data is disclosed. The method generally includes the steps of (A) estimating a magnitude of coding artifacts...
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7590170 |
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...
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7567513 |
Method of controlling transmission rate by using error correction packets and communication apparatus using the same
A method of controlling transmission rate by using error correction packets and a communication apparatus using the same are provided. According to an embodiment of the present invention, the...
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7564821 |
Apparatus and method for controlling a demultiplexer and a multiplexer used for rate matching in a mobile communication system
A transmitting device including an encoder for receiving an information bit stream in a frame and outputting an information symbol, a first parity symbol, and a second parity symbol by encoding...
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7561622 |
Video analyzer and video error detector
Since a delaying part ( 14 ) delays transmission of a video signal, the timing at which a decoded video signal is input into a multiplex processing part ( 16 ) matches the timing at which an...
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7561623 |
Filtering method for removing block artifacts and/or ringing noise and apparatus therefor
Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the...
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7539130 |
Method and system for transmitting and receiving packets
The invention is a system and method for synchronizing the transmission of compressed headers in data packets between a transmitter and a receiver having a preferred wireless application which is...
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7526026 |
Moving picture coding method and moving picture decoding method
A moving picture coding apparatus 1 includes a counter unit 102 which counts the number of pictures following an intra coded picture; and a motion estimation unit 101 which compares...
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7515638 |
Device and process for estimating noise level, noise reduction system and coding system comprising such a device
The present invention relates to a device and a process for estimating the noise level of video images before coding. The device comprises in particular means of storage of at least one input...
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7508874 |
Error concealment for MPEG decoding with personal video recording functionality
Error concealment for motion picture expert group (MPEG) decoding with personal video recording functionality. The present invention is operable to perform error concealment of MPEG data within...
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7493080 |
Methods and systems for cooperative transmission in multi-hop ad-hoc networks
Methods and systems that enable a cooperative form of transmission performed by a set of asynchronous transceivers operating as a distributed joint communication system. In an embodiment of the...
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7492959 |
Method of reducing a blocking artifact when coding moving picture
A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S 0 , S 1 , and S 2 , which are centered around a...
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7492952 |
Moving picture coding method and moving picture decoding method
According to a picture coding method of the present invention, a coded picture identified by a picture number is stored, as a reference picture, into a storage unit; commands indicating...
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7486642 |
Apparatus and method for receiving control message on packet data control channel in a mobile communication system supporting packet data service
An apparatus and method for receiving a packet data control channel in a mobile communication system that transmits packet data and has the packet data control channel for transmitting control...
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7474702 |
Digital television system
Disclosed is a digital television system carrying out modulation/demodulation by VSB(vestigial side band). A VSB transmitter includes an additional error correction encoder designed in a manner...
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7466755 |
Method for video error concealment by updating statistics
A method of error concealment that includes providing a first set of image data at a first time instant, providing a second set of image data at a second time instant, representing the first set of...
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7463755 |
Method for correcting motion vector errors caused by camera panning
A method of correcting errors in motion vectors due to camera panning includes identifying an error block that contains an error motion vector out of a plurality of blocks in a current video frame,...
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7450182 |
Image display apparatus and picture quality correction
An image display apparatus is provided for receiving a digital image signal and displaying it so that high-quality images can be displayed with the noise reduced not to be conspicuous and with the...
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7433405 |
Method and system for the error resilient transmission of predictively encoded signals
A system for the introduction of controlled correlation among multiple redundant representations of predictively encoded signals while avoiding predictive mismatch at a receiver when any given...
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7426315 |
Method for reducing blocking artifacts
A method for removing blocking artifacts from moving and still pictures, comprising classifying horizontal and vertical boundaries in each picture as blocky or non-blocky; for each blocky boundary,...
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7408992 |
Detection and repair of MPEG-2 chroma upconversion artifacts
A method for removing MPEG-2 chroma upconversion artifacts in a video stream includes detecting a presence of artifacts in an incorrectly upsampled MPEG-2 video stream and removing the presence of...
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7408991 |
Error detection in low bit-rate video transmission
A method for decoding video data blocks using variable length codes, comprising transforming information about the spatial frequency distribution of a video data block into pixel values. Prior to...
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7409702 |
Auxiliary program association table
A method of identifying programs in a digital video communication system, consistent with certain embodiment of the present invention involve generating an auxiliary program association table (PAT)...
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7400684 |
Video coding
A method of encoding a video signal representing a sequence of pictures, the method comprising comparing a first picture with a second picture, calculating a measure of the similarity between the...
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7394855 |
Error concealing decoding method of intra-frames of compressed videos
A method conceals errors in an infra-frame of compressed video. The intra-frame is decoded to multiple macroblocks. Each macroblock including pixels arranged in a rectangular array. A lost...
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7366241 |
Data reproduction apparatus and data reproduction method
In a data transmission system, a server is provided with a data storage unit which holds plural video streams having different I-frame intervals, as coded data corresponding to the same video...
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7362379 |
Image processing apparatus and method, recording medium, and program
Inter-field-interpolation spatial transition is calculated based on the sum of absolute values of differences between pixel values of an inter-field-interpolated pixel and adjacent pixels on the...
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7349472 |
Rate-distortion models for error resilient video transcoding
A model stored in a memory accessible by a video transcoder includes a first rate-distortion function modeling a requantization of an input video. A second-rate distortion function models a...
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7339994 |
Method and apparatus for fast convergent power control in a spread spectrum communication system
A system and method for adjusting the power control target for a spread-spectrum communication system is disclosed. A preferred embodiment comprises correcting the power control target based upon...
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7336722 |
Method and apparatus for puncturing code symbols in a communications system
Techniques for puncturing symbols in a communications system. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that...
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7327791 |
Video decoding method performing selective error concealment and resynchronization
A moving image coded string is mapped with a set of information areas as one packet, and each packet is added with an error code and control information in a multiplexing part so that it is decided...
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7327789 |
Decoding apparatus, decoding method, decoding program, and decoding program storage medium
A decoding apparatus is provided with a decoder for receiving plural bit streams and decoding the respective bit streams to output decoded bit streams, and a decoding state holder for saving and...
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7327792 |
Digital video system and control method thereof
A digital video system for wirelessly transmitting a signal to a display device, including a receiver that analyzes a packet of the signal wirelessly received through a first transmitting/receiving...
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7310378 |
Estimating a transmission channel with pilot symbols distributed in lattice structure
A method for estimating a transmission channel from a multicarrier signal transmitted through said transmission channel, comprising real pilot symbols and so-called pure imaginary pilot symbols,...
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7308402 |
Error resistant scalable audio coding partitioned for determining errors
A scalable audio codec processes, quantizes and encodes audio signals into an embedded audio bitstream of bit-planes each having a data unit. The data unit has a beginning refinement bits...
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7295616 |
Method and system for video filtering with joint motion and noise estimation
A method for video filtering of an input video sequence by utilizing joint motion and noise estimation includes the steps of: (a) generating a motion-compensated video sequence from the input video...
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7280689 |
Anti-compression techniques for visual images
In order to discourage compression of video and other visual image signal data that accompanies unauthorized reproduction, distribution and storage of such data, the signal data is modified in a...
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7274736 |
Multiple path equalization for multicarrier systems
A dual path equalization structure is used to equalize DMT systems operating over channels in which different impairments dominate the performance of different parts of the channel. Two TEQ/DFT...
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7272263 |
Image decoding with a simplified process
A decoding unit ( 12 ) decodes an image according to JPEG 2000. A simplifying unit ( 30 ) comprises an automatic transformer ( 32 ) which compares an elapsed time to a time limit at each stage of...
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