Method of decoding compressed data

Details Method of decoding compressed data Method of decoding compressed data

1989-12-28

1991-04-23

Pellinen, A. D.

Coded data generation or conversion

Digital code to digital code converters

To or from number of pulses

341 51, 341106, 341 67, H03M 740

Patent

active

050103440

ABSTRACT:
Disclosed is a method of decoding a stream of compressed data made up of a sequence of literal references, history references, and lexicon references. If the first bit of the stream is a zero, then the first reference is of the type literal and the first bit is followed by the 8-bit literal symbol itself. If the first bit is a one, then the first reference is either a history reference or a lexicon reference. If the second bit is a zero, then the first reference is of the type history and the second bit is followed by an offset value and a length value. If the second bit is a one, then the first reference is of the type lexicon and the second bit is followed by an index value. After the character of the first reference has been determined, the process is repeated starting with the first bit following the first reference.

REFERENCES:
patent: 4558302 (1985-12-01), Welch
patent: 4701745 (1987-10-01), Waterworth
patent: 4725815 (1988-02-01), Mitchell et al.
patent: 4876541 (1989-10-01), Storer
patent: 4881075 (1989-11-01), Weng
patent: 4899148 (1990-02-01), Sato et al.
patent: 4906991 (1990-03-01), Fiala et al.

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