Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1981-10-30
1983-08-16
Murray, Richard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
H04N 506
Patent
active
043994598
ABSTRACT:
A circuit which accepts a variable horizontal frequency input signal and an independent variable vertical frequency input signal and generates a combined video synchronization signal including horizontal synchronization pulses and serrated vertical synchronization pulses preceded and followed by equalization pulses in accordance with specifications established by the National Television Standards Committee. The circuit is useful for generating a combined video synchronization signal from the variable frequency horizontal and vertical synchronization pulses supplied by programmable cathode ray tube controller integrated circuits.
REFERENCES:
patent: 3574450 (1971-04-01), White et al.
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patent: 3705003 (1972-12-01), Lynn et al.
patent: 3737217 (1973-06-01), Haines et al.
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patent: 4070102 (1978-01-01), Lelouch
patent: 4155632 (1979-05-01), Wolbarsht
National Semiconductor Data Sheet for IC No. MM5230 TV Camera sync generator.
RCA transistor, Thyristor and Diode Manual, .COPYRGT.1971 RCA, Co., 175-179.
RCA Integrated Circuits, .COPYRGT.1976 RCA Co., 465-469.
Bartky Scott
Mulvanny Patrick
Murray Richard
Nicolet Instrument Corporation
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