Device and method for pair-match Huffman transcoding and high-pe

Details Device and method for pair-match Huffman transcoding and high-pe Device and method for pair-match Huffman transcoding and high-pe

1996-11-14

1998-09-15

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

To or from number of pulses

341 67, 341106, 341107, H03M 740

Patent

active

058085700

ABSTRACT:
A method for pair-match Huffman transcoding a Huffman-encoded bit stream (e.g., an MPEG digital video bit stream) which includes a plurality of qualifying and non-qualifying types of variable length original code words to be processed by a variable length decoder (VLD) with two-word bit stream segmentation, wherein the VLD has a decoding, window N bits wide. The method includes the steps of pair-match Huffman transcoding at least selected ones of the qualifying types of code words to produce corresponding transcoded code words in such a manner that the combined length of any pair of the transcoded code words is .ltoreq.N. A device for implementing this method, as well as a high-performance variable length decoder with two-word bit stream segmentation which utilizes this method, are also disclosed.

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PHA 23,135, U.S. Patent Application Serial No. 08/672,246, Filed Jun. 28, 1996.

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