Video system with automatic power up

Details Video system with automatic power up Video system with automatic power up

1983-12-07

1985-11-12

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 318

Patent

active

045531668

ABSTRACT:
A high brightness mobile video system includes a standby circuit for maintaining a low CRT filament heater circuit current from a battery supply. The standby circuit monitors an input circuit for video signals. On receipt of a video signal, the standby circuit operates a relay to energize a switch mode power supply which further energizes the deflection circuit for the CRT, couples full operating current therefrom to the filament heater circuit, and enables the CRT video drive circuits.

REFERENCES:
patent: 3882401 (1975-05-01), Cleland
patent: 3956669 (1976-05-01), Del Ciello
patent: 4422178 (1983-12-01), Mori

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