Coded signal decoding circuit, and synchronous control method fo

Details Coded signal decoding circuit, and synchronous control method fo Coded signal decoding circuit, and synchronous control method fo

1997-05-27

1998-07-07

Nguyen, Chau

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

H04L 708

Patent

active

057779996

ABSTRACT:
When a signal indicating a transition state from a synchronized state to an asynchronous state is outputted from a synchronous state register 8, data "0" generated by a "0" generating circuit 20 are stored in a data memory 10 instead of an output of an audio signal generating circuit 6, thus initializing the data memory 10 in advance. In a conventional coded-signal decoding circuit, when a transition was made from a synchronized state to an asynchronous state after failing to establish synchronization, the data memory 10 had to be initialized at a point in time before starting the next synchronous detection, presenting a problem in terms of time. To achieve this, a synchronous control method, a synchronous detecting circuit, and a synchronous detection method are provided.

REFERENCES:
patent: 5301196 (1994-04-01), Hasegawa
patent: 5495552 (1996-02-01), Sugiyama et al.
patent: 5608734 (1997-03-01), Sandler et al.
Information technology--Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s-Part 3: Audio, International Standard ISO/IEC 11172-3:1993, Technical Corrigendum 1, Published 1996-04-15.

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