Video signal decoding system having a frame synchronizer functio

Details Video signal decoding system having a frame synchronizer functio Video signal decoding system having a frame synchronizer functio

1989-06-28

1991-01-01

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358141, 358148, H04N 712

Patent

active

049822845

ABSTRACT:
In a decoding system for decoding video signals into original video signals, the requirement for an externally-arranged frame synchronizer is avoided. The decoding system itself incorporates a frame synchronization function. In one form, the decoding system comprises a buffer memory for temporarily storing video signals that have coded by a predetermined coding algorithm. A frame sync signal detector detects frame sync signals out of the video signals temporarily stored in the buffer memory and generates sync detection signals. A reference sync signal detector detects reference sync signals provided from outside and generates reference sync detection signals. A decoder is responsive to the frame sync and reference sync detection signals to read the video signals out of the buffer memory and to decode the video signals.

REFERENCES:
patent: 4402010 (1983-08-01), Vogelman
patent: 4420771 (1983-12-01), Pirsh
patent: 4731664 (1988-03-01), Nishiwaki et al.
patent: 4831439 (1989-05-01), Fedele et al.

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