Automatic adjustment apparatus for independently adjusting diffe

Details Automatic adjustment apparatus for independently adjusting diffe Automatic adjustment apparatus for independently adjusting diffe

1990-10-31

1992-02-11

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358168, 358169, 358174, 358 22PIP, H04N 5262

Patent

active

050879766

ABSTRACT:
An automatic picture adjustment apparatus in which input video signals are subjected to level conversion for picture quality adjustment within a time period which is shorter than one vertical synchronization period so that the picture quality adjustment of predetermined different portions of the raster may be independently corrected.

REFERENCES:
patent: 4356508 (1982-10-01), Okada
patent: 4489349 (1984-12-01), Okada
patent: 4554532 (1985-11-01), Ise
patent: 4605968 (1986-08-01), Hayashi
patent: 4628362 (1986-12-01), Waehner
patent: 4799106 (1989-01-01), Moore
patent: 4905077 (1990-02-01), Ishii

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