Method and apparatus for encoding and decoding data utilizing da

Details Method and apparatus for encoding and decoding data utilizing da Method and apparatus for encoding and decoding data utilizing da

1990-04-26

1992-07-28

Pellinen, A. D.

Coded data generation or conversion

Digital code to digital code converters

Adaptive coding

341 50, 341 78, H03M 700

Patent

active

051343967

ABSTRACT:
A method structure for the compression of data utilizes an encoder which effects a transform with the aid of a coding neural network, and a decoder which includes a matched decoding neural network with effects almost the inverse transform of the encoder. The method puts in competition M coding neural networks (30.sub.1 to 30.sub.M) wherein M>1 positioned at the transmission end which effects a same type of transform and the encoded data of one of which are transmitted, after selection (32, 33) at a given instant, towards a matched decoding neural network which forms part of a set of several matched neural networks (60.sub.1 to 60.sub.Q) provided at the receiver end. Learning is effected on the basis of predetermined samples. The encoder may comprise, in addition to the coding neural network (30.sub.1 to 30.sub.M), a matched decoding neural network (35.sub.1 to 35.sub.M) so as to effect the selection (32, 33) of the best coding neural network in accordance with an error criterion.

REFERENCES:
patent: 3394352 (1968-07-01), Wernikoff et al.
patent: 4646061 (1987-02-01), Bledsoe
patent: 4730348 (1988-03-01), MacCrisken
patent: 4929946 (1990-05-01), O'Brien et al.
patent: 4972187 (1990-11-01), Wecker
patent: 4972473 (1990-11-01), Ejiri et al.

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