Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1988-08-23
1990-06-12
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358336, 358337, 358338, 360 101, H04N 576
Patent
active
049337742
ABSTRACT:
A video signal reproducing apparatus includes a field memory for storing one field of a reproduced video signal, a signal separator for extracting a horizontal sync pulse signal and a vertical sync pulse signal from the reproduced video signal, and an address counter responsive to the horizontal sync pulse signal for addressing the field memory. The apparatus in addition includes a pseudo signal generator and a reset signal generator. The pseudo signal generator is for producing a pseudo vertical sync pulse signal delayed relative to the vertical sync pulse signal. The reset signal generator is connected to the vertical sync pulse separator and the pseudo signal generator for producing a reset signal to reset the address counter. The reset signal generator normally uses the vertical sync pulse signal to produce the reset signal, but uses the pseudo vertical sync pulse signal to produce the reset signal when a vertical sync pulse is not obtained from the vertical sync pulse separator.
REFERENCES:
patent: 4731659 (1988-03-01), Kani
patent: 4788604 (1988-11-01), Takeuchi
Richardson Robert L.
Sinderbrand Alvin
Sony Corp.
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