Data compression by removing repetition and unnecessary informat

Details Data compression by removing repetition and unnecessary informat Data compression by removing repetition and unnecessary informat

1993-09-24

1995-07-18

Chan, Eddie P.

Coded data generation or conversion

Digital code to digital code converters

Unnecessary data suppression

341 63, 395375, 364DIG2, 3649513, 364939, 3649582, G06F 720, G06F 500

Patent

active

054345685

ABSTRACT:
Repetitive data and non-repetitive data, including periods of no information, is encoded prior to transmission or storage in digital form to minimize the memory space required for storage or the time required to transmission. Repetition, partial repetition, and near repetition is encoded in a form indicating the occurrence of repetition, its characteristics and its duration. The existence and size of repeated patterns in the data is dynamically determined. When repetition is detected, non-repetitive data is inserted into the datastream and repeated data is removed from the datastream. To this non-repeated data in the datastream are added a coded repeated pattern sample, an identification preamble signal, an instruction signal for decoding purposes, a period count signal, a mask signal, and a repeat count signal. All necessary data elements are combined and assembled to produce compressed data. A receiver utilizes these coded and uncoded data elements to regenerate complete original data.

REFERENCES:
patent: 4232375 (1980-11-01), Paugstat et al.
patent: 4280192 (1981-07-01), Moll
patent: 4412306 (1983-10-01), Moll
patent: 4446516 (1984-05-01), Nishimura

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