CRT drive control circuit

Details CRT drive control circuit CRT drive control circuit

1984-08-20

1986-05-06

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358243, 358168, 358169, H04N 916, H04N 568, H04N 5235, H04N 557

Patent

active

045875545

ABSTRACT:
A CRT drive control circuit for automatically limiting beam current when it is too large. A brightness reduction control and a contrast reduction control are alternately applied in accordance with a dark level detection of a video signal.

REFERENCES:
patent: 4081838 (1978-03-01), Wheeler
patent: 4137552 (1979-01-01), Serafini

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