Vertical synchronizing signal stabilizing circuit, integrated ci

Details Vertical synchronizing signal stabilizing circuit, integrated ci Vertical synchronizing signal stabilizing circuit, integrated ci

1996-08-22

1998-11-03

Burgess, Glenton B.

Television

Synchronization

Sync separation

348500, 348529, 348547, H04N 510

Patent

active

058316825

ABSTRACT:
In a vertical synchronizing signal stabilizing circuit, an integrated circuit and a television signal processing device, a vertical synchronizing signal of which period is stabilized can be output with a small number of elements and a simple constitution, without being influenced by the state of the television signal. On the basis of a first distinguish signal which indicates whether there is a separated signal separated from the television signal as the vertical synchronizing signal or not and of a second distinguish signal which indicates whether the period of the separated signal is the standard period or not, the plural states of the separated signal are discriminated, and the processing mode of the separated signal processing circuit is switched on the basis of the result of the discrimination to process the separated signal.

REFERENCES:
patent: 4238770 (1980-12-01), Kobayashi et al.
patent: 5031041 (1991-07-01), Fling
patent: 5296928 (1994-03-01), Yamashita et al.
patent: 5469220 (1995-11-01), Kumada
patent: 5686968 (1997-11-01), Ujiie et al.

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