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Parallel Compression by Table Look Up

IP.com Disclosure Number: IPCOM000056394D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-14

Publishing Venue

IBM

Related People

Authors:
Abraham, DG [+details]

Abstract

Data transformation and compression techniques, normally performed bit by bit, are accomplished more rapidly byte-by-byte, using a table look up that is addressed directly by bytes of the input bit stream to access pre-calculated data compression patterns. A 4-pel predictive transformation algorithm, coupled with run-length encoding, e.g., per U.S. Patent 3,813,485, is presented as an example; however, the system described is not limited to any specific compression or transformation technique.