Self-initialized coder and method thereof

Details Self-initialized coder and method thereof Self-initialized coder and method thereof

1996-01-26

1998-04-28

Chin, Stephen

Pulse or digital communications

Pulse code modulation

Differential

375231, 341143, H04B 1406

Patent

active

057455244

ABSTRACT:
A self initialized coder and method thereof, the coder arranged and constructed for decoding an information stream, the coder including a buffer (301) for storing a portion (403) of the information stream, a controller (313) coupled to the buffer for temporally reversing a first part (401) of the portion to provide a file header (415), and an adaptive decoder (213) having a state parameter, the adaptive decoder, coupled to the controller and the buffer, for decoding the file header to provide an estimate of the state parameter and thereafter for decoding, using the estimate, the portion to provide a decoded signal.

REFERENCES:
patent: 4621366 (1986-11-01), Caine et al.
patent: 4829543 (1989-05-01), Borth et al.
patent: 5274670 (1993-12-01), Serizawa et al.
CCITT Blue Book; Melbourne, 1988; 32 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM); Fascicle III.4-Rec. G.721; pp. 231-340.
Spanias, Andreas S.; "Speech Coding: A Tutorial Review"; IEEE, vol. 82, No. 10, Oct. 1994; pp. 1541-1582.
Wireless Communication 1995; Chapter 2 American and European Speech Codecs; Section 2.3.2 "ADPCM Codecs for the European CT-2 and DECT Systems"; pp. 51-53.

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