Control of brightness level adapted to control of contrast

Details Control of brightness level adapted to control of contrast Control of brightness level adapted to control of contrast

1989-11-01

1991-01-01

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358169, H04N 557, H04N 559

Patent

active

049822870

ABSTRACT:
A level setting apparatus for adjusting the brightness of a television receiver is modified by the setting of an amplitude control apparatus for adjusting the contrast such that the maximum brightness level of the image on a CRT is modified in direct relationship to the adjusted level of contrast.

REFERENCES:
patent: 3804981 (1974-04-01), Avins
patent: 3928867 (1975-12-01), Lynch
patent: 3961361 (1976-06-01), Avins et al.
patent: 4091419 (1978-05-01), Rhee et al.
patent: 4126884 (1978-11-01), Shanley, II
patent: 4506292 (1985-03-01), Newton
patent: 4520397 (1985-05-01), Hibi
patent: 4587554 (1986-05-01), Tamura
patent: 4654717 (1987-03-01), Stoughton

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