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7623049 |
Decoding of context adaptive variable length codes in computational core of programmable graphics processing unit
Various embodiments of decoding systems and methods are disclosed. One system embodiment, among others, comprises a software programmable core processing unit having a context-adaptive variable...
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7616137 |
Method and apparatus for compression and decompression of an executable code with a RISC processor
An embodiment of the invention relates to a process for compression of executable code by a microprocessor, comprising steps consisting of decomposing the executable code into words; compressing...
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7616136 |
Message compression methods and systems
A method for message compression comprises receiving a first text message, acquiring at least one frequent character combination in the first text message, calculating frequencies for the frequent...
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7609182 |
Generating dynamic huffman codes
Huffman trees may be rapidly and effectively created by sorting a plurality of nodes by weight in an insertion sorter stack, popping the two lowest weighted nodes from the insertion sorter stack,...
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7589648 |
Data decompression
In one embodiment, a data decompression circuit for a data stream having a repeated data word is provided. The data stream is compressed into a series of data frames such that the repeated data...
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7586426 |
Image coding apparatus and method thereof
An image coding apparatus includes a variable length coding section, an arithmetic coding section and a common buffer memory. The variable length coding section inputs image data and outputs a...
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7586425 |
Scalable video coding and decoding
A method for coding spatial and quality enhancement information in scalable video coding using variable length codes. Conventional systems have been capable of using variable length codes only with...
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7586424 |
Data coding using an exponent and a residual
A method of coding audio and/or video data. A data symbol may be coded using an exponent and a residual, in which the exponent is coded using a variable length code, such as but not limited to a...
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7580585 |
Lossless adaptive Golomb/Rice encoding and decoding of integer data using backward-adaptive rules
A method and system of lossless adaptive Golomb/Rice (G/R) encoding of integer data using a novel backward-adaptive technique having novel adaptation rules. The adaptive G/R encoder and decoder...
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7573406 |
System and method for decoding context adaptive variable length coding
A system and method that process encoded data, wherein the encoded data is an encoded video stream. The encoded data may be buffered and the characteristics of the buffered encoded data may be...
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7548176 |
Data coding buffer for electrical computers and digital data processing systems
A method of buffering includes determining, based at least in part on a radix of a data symbol, a number of discrete values resulting from coding the data symbol into a buffer. The number of...
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7541948 |
Variable length coding method and variable length decoding method
An image coding apparatus provides a run-length encoding unit RLE 1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable...
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7535386 |
Variable length code decoding device and decoding method
A flag indicating whether a decoding process is completed or continued is disposed in each of entries of a decoding process table. A decoded value and a significant bit length are recorded in the...
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7528749 |
Decoding apparatus and decoding method
A decoding apparatus for arithmetically decoding input coded data into symbol data by using a state variable and a context variable includes: a first decoding unit executes arithmetic decoding...
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7522074 |
Enhanced control for compression and decompression of sampled signals
Control of signal compression is coordinated by selectively modifying control parameters affecting the bit rate, sample rate, dynamic range and compression operations. Selected control parameters...
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7511641 |
Efficient bitstream compression
According to one embodiment of the invention, a method of generating a compressed configuration bitstream for a programmable logic device comprises encoding the most-prevalent data word within the...
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7511640 |
Digital compression of binary data blocks
Method and apparatus are configured to assign a code of less than N number of bits in length to a pattern of bits of a first polarity value distributed within a block of N binary bits. The method...
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7501964 |
Entropy coding for digital codecs
A method and systems are provided for efficiently implementing content adaptive variable length coding on a modern processor. Some embodiments comprise encoding a non-zero coefficient in an array...
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7499492 |
Video compression and encoding method
A method of compressing video data having at least one frame having at least one block and each block having an array of pixels is provided. The method transforms the pixels of each block into...
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7486212 |
Variable length coding for sparse coefficients
Coding quantized transform coefficients as occur in image compression includes, for a subset of coefficient amplitude values coding by a first method corresponding to each amplitude of the subset,...
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7486211 |
Method and system for entropy coding
A method and system are provided for encoding a plurality of integers with variable-length code tables constructed by combining a plurality of structured code tables. Each code table has an...
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7486209 |
Demodulation table, demodulating device and demodulating method, program, and recording medium
A demodulation table for converting variable length code (d, k; m, n; r) is provided. The variable length code has a maximum constraint length r>1, has a minimum run of d (d>0), has a maximum...
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7469011 |
Escape mode code resizing for fields and slices
Techniques and tools for escape mode code resizing are described. For example, a video decoder receives encoded information (e.g., runs, levels) for transform coefficients of blocks. For at least...
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7466248 |
Method and apparatus for improved multimedia decoder
Embodiments include systems and methods of improving processing in a decoder in a multimedia transmission system. Multimedia data may include one or more of motion video, audio, still images, or...
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7460595 |
System and method for Huffman shaping in a data communication system
In a communication system, Huffman coding techniques are used to obtain shaping gains for an improvement in data transmission rates. More particularly, a novel method of Huffman shaping is...
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7446679 |
Compression and decompression of configuration data for programmable logic devices
Various approaches are disclosed to provide improved compression and decompression of configuration data for use with programmable logic devices (PLDs). Uncompressed configuration data may comprise...
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7443320 |
Decoding method and encoding method
A decoding method according to the present invention is a method of decoding a variable length code to a Run symbol and a Level symbol. The Run symbol indicates the number of consecutive...
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7439887 |
Method and apparatus for GIF decompression using fixed-size codeword table
A fixed-size codeword table is generated for decompressing GIF encoded data. The fixed-size codeword table is defined to store a codeword string and a codeword length for each of a number of...
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7439883 |
Bitstream generation for VLC encoded data
A bitstream generator is described, for placing variable length coding (VLC) data into a fixed width data stream. The bitstream generator includes an input for receiving VLC data; the VLC data may...
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7436332 |
Runlength encoding of leading ones and zeros
A method and an encoder ( 1001 ) are disclosed for encoding an input bitstream derived from a block of coefficients relating to video data. Leading zeros and tailing zeros are determined and...
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7433824 |
Entropy coding by adapting coding between level and run-length/level modes
An audio encoder performs adaptive entropy encoding of audio data. For example, an audio encoder switches between variable dimension vector Huffman coding of direct levels of quantized audio data...
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7425906 |
Method of code generation, and method and apparatus for code modulation
A method of generating codewords that conform to a run length limited (RLL) constraint represented by (d, k, a, b), where d is a minimum run length of a codeword, k is a maximum run length of the...
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7408488 |
Digital signal coding apparatus, digital signal decoding apparatus, digital signal arithmetic coding method and digital signal arithmetic decoding method
A digital signal coding apparatus and method makes a compression coding of a digital signal. The coding apparatus and method codes the digital signal by determining a context model to be used for...
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7403561 |
Fixed bit rate, intraframe compression and decompression of video
High quality intraframe-only compression of video can be achieved using rate distortion optimization and without resizing or bit depth modification. The compression process involves transforming...
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7400277 |
Method and system for the compression of probability tables
The present invention relates to a method, computer program product and system for the compression of a probability table and the reconstruction of one or more probability elements using the...
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7397411 |
Method, apparatus, system, and program for code conversion transmission and code conversion reception of audio data
A system and a method of suppressing outstanding degradation of decoded audio quality due to a transmission error of audio coded data are provided without feedback information from a receiver,...
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7388523 |
MTR encoding method, MTR decoding method, MTR encoder, MTR decoder, and magnetic recording device
An MTR encoder includes convolution units that perform convolution of input data using additional bits, MTR encoding units that MTR-encode data obtained by the convolution units, RDS calculating...
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7385534 |
Methods and apparatus for processing variable length coded data
An apparatus for processing variable length coded data includes a coefficient buffer unit and several lookup tables. The coefficient buffer unit includes a coefficient memory and an index register...
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7382878 |
System and method for data encryption
A system and method for encrypting and/or compressing an input data string is disclosed. The input data string is divided into a plurality of blocks of data that each contains a plurality of bits...
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7378995 |
Low-complexity sampling rate conversion method and apparatus for audio processing
A low-complexity sampling rate conversion (SRC) method and apparatus for the processing of digital audio signals. A first stage upsamples an input audio signal to generate an upsampled audio...
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7378992 |
Content independent data compression method and system
Systems and methods for providing fast and efficient data compression using a combination of content independent data compression and content dependent data compression. In one aspect, a method for...
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7375661 |
Image coding apparatus, variable-length coding apparatus, control apparatus and method therof
A variable-length coding apparatus having a smaller circuit scale, which flexibly handles identifier insertion processing in correspondence with various coding schemes, and which performs fine code...
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7375660 |
Huffman decoding method
The present invention relates to a Huffman decoding method. Firstly, a Huffman table including multiple Huffman codes and multiple corresponding size/symbol codes is extracted. Each Huffman code...
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7372379 |
Method and system for decoding N-tuple variable length code
This application provides a flexible and efficient way to handle escape symbols during decoding of N-tuple variable length codes (VLCs). The user can request that the decoder resolve a sequence of...
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7369066 |
Efficient 8×8 CABAC residual block transcode system
A circuit generally including a first module, a second module and a third module is disclosed. The first module may be configured to (i) generate a plurality of parsed residual blocks by parsing a...
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7358870 |
Huffman coding and decoding based upon sectioning of a Huffman coding tree
A method of decoding a bitstream encoded according to a Huffman coding tree of height H including: extracting a first codeword of H bits from the bitstream; modifying the codeword by shifting it by...
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7348902 |
Method for efficient variable length decoding
Embodiments of the present invention perform efficient decoding of variable length codes statically defined by a coding standard for a wide range of source data. According to the disclosed method,...
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7345601 |
Variable length coding algorithm for multiple coding modes
A novel algorithm is shown that allows efficient generation of Variable Length Codes using a Very Large Instruction Word processor with multiple execution units. The code generation is parallelized...
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7336207 |
Modulation table, modulating apparatus and method, program, and recording medium
A modulation table for converting data with a basic data length of m bits into a variable length code (d,k;m,n;r) is provided. The modulation table includes a basic table for converting data...
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7333037 |
Method and system for improved lookup table (LUT) mechanism for Huffman decoding
Methods and systems for improved lookup table mechanism for Huffman decoding are provided and may include selecting, based on a plurality of entropy encoded bits from a received bitstream, one of a...
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