Data compression and decompression method and system for...

Details Data compression and decompression method and system for... Data compression and decompression method and system for...

1998-12-30

2001-02-20

Phan, Trong (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from bit count codes

C341S087000

Reexamination Certificate

active

06191710

ABSTRACT:

FIELD
The present invention relates to data compression and decompression methods and systems for data compression and decompression.
BACKGROUND
Numerous data compression algorithms exist which have the objective of reducing the volume of data in a data record to lessen storage requirements and/or data transmission volume. More particularly, such algorithms minimize the volume of compressed data, while permitting a later complete reproduction of the original data record. An example of such a data compression algorithm is the Lemple-Ziv method. Obtaining the highest degree of data compression is desirable and advantageous in many applications requiring data compression.
SUMMARY
The invention is directed to a process for compressing a subject data pattern of data bits with a data processing system, including: providing a group of candidate numbers with each number comprising a sequence of bits; comparing with the data processing system, the subject data pattern with at least some portions of the group of candidate numbers to match a sequence of bits of the subject data pattern and a largest sequence of bits within the compared portions of the group of candidate numbers; and, storing all of the data pattern except the matched bits, and information identifying the matched bits within the group of candidate numbers.


REFERENCES:
patent: 3980809 (1976-09-01), Cook
patent: 5491481 (1996-02-01), Akagiri
patent: 5877714 (1999-03-01), Satoh

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