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Vocabulary-Based Memory Compression

IP.com Disclosure Number: IPCOM000063905D
Original Publication Date: 1985-May-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Hanft, RF Pechanek, GG VanDyke, MS [+details]

Abstract

The size or density of a document for memory storage and/or data transmission applications is significantly reduced through replacing words in the document with look-up locations in a vocabulary table. Two vocabulary tables are employed with each accommodating 128 different entry locations. Each of these entry locations may have a single word, a phrase, a word combination, or any data string including numerics. One of the tables would be a fixed table dedicated to universally used words stored in a ROS (read-only store), while the other table would be constructed in a RAM (random-access memory) with repetitively used words unique to a particular document to reflect a customized RAM file.