System and method of digital compression and decompression using

Details System and method of digital compression and decompression using System and method of digital compression and decompression using

1994-05-19

1996-02-13

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 82, 375244, 348406, 348409, 348420, H04B 1406

Patent

active

054916852

ABSTRACT:
A system and method of compressing and decompressing a digital signal using scaled quantization of variable-sized packets of difference samples. Difference samples are generated and subdivided into packets. Packet boundaries may be moved to maximize resolution. A scale value is established for each packet, and scaled samples are generated for the difference samples. Packet boundaries, scale values, and scaled samples are then output as the compressed signal. Decompression is performed by multiplying scaled samples by the appropriate scale value. The resulting set of decompressed difference samples are sequentially added to an initial sample to produce a decompressed signal.

REFERENCES:
patent: 4719642 (1988-01-01), Lucas
patent: 4882585 (1989-11-01), Beard
patent: 4982282 (1991-01-01), Saito et al.
patent: 5049990 (1991-09-01), Kondo et al.
patent: 5121202 (1992-06-01), Tanoi
patent: 5307177 (1994-04-01), Shibata et al.

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