Synchronizing signal separating apparatus and method

Details Synchronizing signal separating apparatus and method Synchronizing signal separating apparatus and method

1993-12-13

1996-01-23

Groody, James J.

Television

Synchronization

Sync separation

348521, H04N 508

Patent

active

054868696

ABSTRACT:
The present invention provides a synchronizing signal separation. In accordance with the present invention, a sync pulse processing circuitry slices a video signal and senses the peaks of the synchronizing pulse. A reference generating circuitry divides the output from the sync pulse processing circuitry into a plurality of reference signals that are compared with the video signal, thereby producing logic level outputs. A sync restoring circuitry combines the logic level outputs to provide precisely reconstructed synchronizing pulses of the video signal. The present invention incorporates different standard functions with superior performance because it may be applied for different types of video signals.

REFERENCES:
patent: 3569844 (1971-03-01), Lynn
patent: 3706847 (1972-12-01), Smeulers
patent: 4115811 (1978-09-01), Goff
patent: 4298890 (1981-11-01), Lai
patent: 4385319 (1983-05-01), Hasegawa
patent: 4520393 (1985-05-01), Zwijsen
patent: 4812907 (1989-03-01), Hathaway

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