Method for decoding reversible variable length code using...

Details Method for decoding reversible variable length code using... Method for decoding reversible variable length code using...

2005-02-15

2005-02-15

Young, Brian (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S050000, C341S106000

Reexamination Certificate

active

06856264

ABSTRACT:
A method for decoding a bitstream of reversible variable length codewords parses the bitstream to extract a next reversible variable length codeword, transcodes each codeword into a pseudo-variable length codeword and decodes pseudo-variable length codeword. The transcoding produces at least some pseudo-variable length codewords suitable for leading zero lookup table decoding in specially adapted hardware. The transcoding may differ for reversible variable length codewords with initial “0” and initial “1”. These differing transcodings are decoded with may be decoded with a common lookup table or different sets of lookup tables.

REFERENCES:
patent: 6317461 (2001-11-01), Chujoh et al.
patent: 6501801 (2002-12-01), Chujoh et al.

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