Method of high speed Huffman coding and decoding of lab color im

Details Method of high speed Huffman coding and decoding of lab color im Method of high speed Huffman coding and decoding of lab color im

1995-12-29

1997-07-29

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

To or from number of pulses

341106, H03M 740

Patent

active

056525826

ABSTRACT:
A circuit for decoding Huffman-encoded words describing color pixels in the Lab color space at the rate of one per clock cycle. The encoded words are formed into two strings of bits, one for coded L words and one for a and b words, each set of a and b words encoded into one Huffman code word, and two decoders in parallel are used, each first shifting in a number of coded bits during a first clock period, and converting the Huffman code to data on a second clock period. The two parallel decoders are timed so that the shift cycle of one decoder occurs at the same time as the conversion cycle of the other. Finally, the two streams of decoded data words are combined into one stream. The result is one output data word, either L or ab, per clock cycle.

REFERENCES:
patent: 5124791 (1992-06-01), Isralsen et al.

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