Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1976-11-03
1978-02-14
Martin, John C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358242, 358146, H04N 522
Patent
active
040743179
ABSTRACT:
A multi-channel video display apparatus comprises a channel selector circuit including a plurality of manually operated switches, a sequential circuit to generate an output in response to the operating sequence of the switches in step with a vertical synchronization pulse, and a video signal gate circuit for passing a video signal in response to the output from the sequential circuit to the electrode of a cathode ray tube. The output from the sequential circuit is used to generate a series of horizontal and vertical beam positioning DC potentials for biasing the sawtooth waveforms to provide simultaneous display of the video signals on the screen of the cathode ray tube.
REFERENCES:
patent: 3207842 (1965-09-01), Flagle
patent: 3256386 (1966-06-01), Morchand
Kato Tokuji
Kogo Hiroshi
Uematsu Takashi
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Martin John C.
Nissan Motor Company Limited
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