Television image display apparatus

Details Television image display apparatus Television image display apparatus

1990-03-05

1991-09-03

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, 358 37, 358166, H04N 964

Patent

active

050459260

ABSTRACT:
In a television image display apparatus, one field of an input video signal is divided into a plurality of areas in each of which image information is sampled, and an arithmetic processor provides a video control signal on the basis of preset adjusting data received from a memory and the sampled image information. Luminance, chrominance or sharpness levels can be automatically controlled for each field by such video control signal to maintain the video display in an optimum state. Noise problems typically associated with dark images or weak electric fields are eliminated, while improving the image quality by adjusting the video output for each field.

REFERENCES:
patent: 4376952 (1983-03-01), Troiano
patent: 4489349 (1984-12-01), Okada
patent: 4623924 (1986-11-01), Wargo et al.
patent: 4746970 (1988-05-01), Hosokawa et al.
patent: 4799106 (1989-01-01), Moore et al.

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