Coded data generation or conversion – Digital code to digital code converters – Adaptive coding
Patent
1988-04-29
1990-03-06
Shoop, Jr., William M.
Coded data generation or conversion
Digital code to digital code converters
Adaptive coding
341 79, 341 87, H03M 730
Patent
active
049069918
ABSTRACT:
In accordance with the present invention source data is encoded by literal codewords of varying length value, with or without the encoding of copy codewords of varying length and displacement value. Copy codeword encoding is central to textual substitution-style data compression, but the encoding of variable length literals may be employed for other types of data compression.
REFERENCES:
patent: 4464650 (1984-08-01), Eastman et al.
patent: 4558302 (1985-12-01), Welch
Fiala Edward R.
Greene Daniel H.
Shoop Jr. William M.
Xerox Corporation
Young Brian
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