Method and device for entropy encoding or entropy decoding video signal for high-capacity parallel processing

A method for decoding a video signal based on parallel implementations, the method performed by at least one processor, comprising:

• reading data segments in a data header;
• entropy-decoding first data symbols in a base segment of the data segments, wherein the first data symbols are decoded in serial by a serial processing using first probability information which is selected by a first context model selection unit in a serial processing block;
• entropy-decoding second data symbols in all remaining data segments except the base segment using multiple threads,
• wherein the second data symbols are read from a plurality of buffers in a parallel processing block which is connected in parallel to the serial processing block, and
• wherein each of the second data symbols are decoded in parallel by a parallel processing based on second probability information which is selected by a second model selection unit in the parallel processing block;
• and
• reconstructing the video signal based on the first data symbols and the second data symbols.

An apparatus for encoding a video signal using parallel implementations, the apparatus comprising:

• at least one processor configured to:
• generate data symbols to be encoded, wherein the data symbols are assigned to a base segment and another segment;
• encode first data symbols in the base segment, wherein the first data symbols are encoded in serial by a serial processing using first probability information which is selected by a first context model selection unit in a serial processing block;
• copy second data symbols in the another segment to a plurality of buffers in a parallel processing block which is connected in parallel to the serial processing block;
• encode the second data symbols in the parallel processing block, wherein each of the second data symbols are encoded in parallel by a parallel processing using second probability information which is selected by a second context model selection unit in the parallel processing block;
• and
• create a data header when the first data symbols and the second data symbols are encoded,
• wherein the data header includes indexes of the base segment and the another segment.

An apparatus for decoding a video signal based on parallel implementations, the apparatus comprising:

• at least one processor configured to:
• read data segments in a data header;
• entropy-decode first data symbols in a base segment of the data segments, wherein the first data symbols are decoded in serial by a serial processing using first probability information which is selected by a first context model selection unit in a serial processing block;
• entropy-decode second data symbols in all remaining data segments except the base segment using multiple threads,
• wherein the second data symbols are read from a plurality of buffers in a parallel processing block which is connected in parallel to the serial processing block, and
• wherein each of the second data symbols are decoded in parallel by a parallel processing based on second probability information which is selected by a second model selection unit in the parallel processing block;
• and
• reconstruct the video signal based on the first data symbols and the second data symbols.