Regenerating circuit of synchronizing signals for standard video

Details Regenerating circuit of synchronizing signals for standard video Regenerating circuit of synchronizing signals for standard video

1992-01-31

1995-03-28

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

348505, 348521, 348536, H04N 944, H04N 945, H04N 506

Patent

active

054022436

ABSTRACT:
A synchronizing signal regenerating circuit for standard video signals in a digital video signal processing system includes a circuit for regenerating stable horizontal synchronizing signals, a circuit for generating double horizontal synchronizing signals, a circuit for generating horizontal synchronizing signals, a circuit for generating vertical synchronizing signals and an output circuit. The circuit for regenerating stable horizontal synchronizing signals regenerates the horizontal synchronizing signals in response to quadruple burst signals, and the circuit for generating double horizontal synchronizing signals is connected to the output terminal of the circuit for regenerating stable horizontal synchronizing signals. The circuit for generating horizontal synchronizing signals is connected to an output terminal of the circuit for regenerating stable horizontal synchronizing signals. The circuit for generating vertical synchronizing signals generates those signals from the input vertical synchronizing signals. The synchronizing signal generating circuit of the present invention can be incorporated into digital video signal processing systems, making it possible to eliminate a sample ratio converting circuit. As a result, the total system for video signal processing can be miniaturized and, thus, constructed in a light weight and compact form.

REFERENCES:
patent: 4636861 (1987-01-01), Willis
patent: 4737849 (1988-04-01), Bauduin
patent: 4769704 (1988-09-01), Hirai et al.
patent: 5043813 (1991-08-01), Christopher

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