Circuit for detecting a synchronous word signal from a MPEG bit

Details Circuit for detecting a synchronous word signal from a MPEG bit Circuit for detecting a synchronous word signal from a MPEG bit

1997-06-20

1999-05-04

Lall, Parshotam S.

395885, G06F 300

Patent

active

059013354

ABSTRACT:
A circuit for detecting a synchronous word signal from a moving picture experts group (MPEG) bit stream in a video-audio decoding system which is capable of more easily detecting a synchronous word by detecting a data start position of an input bit stream used for a multimedia system using the moving picture experts group (MPEG) detecting identical level bits from a bit stream inputted, and comparing the bits at a time. The circuit includes a serial/parallel converter for converting a data of a synchronous signal transmitted thereto in series in a bit stream form into a parallel data in accordance with a clock signal inputted thereinto, a separating and comparing unit for separating identical level bit signals of a synchronous word from an output signal from the serial/parallel converter and generating a flag signal when the signal is detected, a controller for judging an input of a synchronous word as a flag signal and generating a data processing control signal, and a data processor for processing a parallel output signal from the serial/parallel converter in accordance with a data processing control signal from the controller and outputting a data.

REFERENCES:
patent: 5101394 (1992-03-01), Endoh
patent: 5247363 (1993-09-01), Sun et al.
patent: 5303241 (1994-04-01), Takada et al.
patent: 5418815 (1995-05-01), Ishikawa
patent: 5521927 (1996-05-01), Kim et al.
patent: 5559999 (1996-09-01), Maturi et al.
patent: 5596420 (1997-01-01), Daum

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