Variable-length encoding method, variable-length decoding...

Details Variable-length encoding method, variable-length decoding... Variable-length encoding method, variable-length decoding...

2006-08-08

2006-08-08

Nguyen, John B (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S106000, C341S107000

Reexamination Certificate

active

07088269

ABSTRACT:
The present invention correctly decodes data encoded with a variable-length encoding method that improves the compression ratio. The variable-length encoding method encodes a unit data composed of a plurality of sub-data while referencing a parameter table, and includes: an initialization step in which the parameter table is set to initial values; a parameter table information encoding step in which information related to the initialized parameter table is encoded; a parameter obtaining step in which encoding parameters to be used in the encoding of sub-data are obtained from the parameter table; a sub-data encoding step in which variable-length encoding of the sub-data is performed with reference to the obtained encoding parameters; and an encoded information placement step in which the encoded information is placed in a position in which the information can be obtained before the encoded unit data.

REFERENCES:
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patent: 5-199422 (1993-08-01), None
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Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG,Joint Model No. 1(JM-1), Document JVT-A003, File JVT-A003.doc, Generated Jan. 2002, Pattaya, Thailand Dec. 3-7, 2001.

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