Video monitor using encoded sync signals

Details Video monitor using encoded sync signals Video monitor using encoded sync signals

1987-07-08

1988-10-18

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358150, 340814, H04N 504

Patent

active

047791322

ABSTRACT:
A video terminal is capable of operating with three different vertical formats which are determined by the polarities of the incoming horizontal and vertical sync signals. A PROM is supplied with address inputs corresponding to the different combinations of incoming vertical and horizontal sync signal polarities and signal levels, and outputs comprising mode selection signals and horizontal and vertical sync pulses of given polarity for use by the monitor.

REFERENCES:
patent: 4583119 (1986-04-01), Roscoe
patent: 4727362 (1988-02-01), Rackley et al.

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