System and methods for improving data compression

Details System and methods for improving data compression System and methods for improving data compression

2002-09-05

2009-08-25

Jung, Min (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S477000, C341S051000, C704S010000

Reexamination Certificate

active

07580429

ABSTRACT:
An improved data compression system and method is disclosed. The data compression method uses smaller fixed bit words to represent streams of digital data. The fixed bit words are sent instead of the streams of digital data. A table relating the fixed bit words and streams of digital data is provided as a dictionary. Each entry has a node which is indexed in a stored index. As additional fixed bit words are established for new streams of digital data, older fixed bit words are deleted from the dictionary. The older fixed bit words are prevented from being deleted if they are used for subsequent streams of data. There are a number of methods to determine how the older fixed bit words are retained which are disclosed.

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