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Hybrid Data Compression Technique for Change Block Skipping in an APA Printer

IP.com Disclosure Number: IPCOM000052221D
Original Publication Date: 1981-May-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Spivey, PR [+details]

Abstract

The data compression technique described in the previous article and referred to as the "Change Block Skipping" (CBS) code has a very fast execution time implemented in software, but its compression ratio is not as good as some other techniques. Another technique, the run length method, has just the opposite problem. A hybrid technique takes advantage of the processing speed of the CBS code and the compression ratio of the run length code. In effect, the hybrid technique is a compromise approach.