Constant width burst gate keying pulse generator

Details Constant width burst gate keying pulse generator Constant width burst gate keying pulse generator

1983-08-30

1986-04-08

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9455

Patent

active

045816301

ABSTRACT:
A keying pulse generator for a color television burst gate provides a gating pulse in response to horizontal synchronizing pulses when present and in response to horizontal retrace pulses when sync pulses are absent. A timing circuit is provided to maintain a constant width keying pulse independent of video signal condition and receiver operating characteristics.

REFERENCES:
patent: 3544708 (1970-12-01), Buechel
patent: 4051518 (1977-09-01), Sendelweck
patent: 4149180 (1979-04-01), Lovely
patent: 4173023 (1979-10-01), Lagoni et al.
patent: 4228456 (1980-10-01), Lovely
patent: 4263610 (1981-04-01), Shanley, II et al.
patent: 4295163 (1981-10-01), Hettiger
patent: 4410907 (1983-10-01), Vinekar et al.

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