Dual channel automatic picture sharpness control

Details Dual channel automatic picture sharpness control Dual channel automatic picture sharpness control

1974-06-14

1976-01-06

Libman, George H.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 39, 358 40, H04N 902

Patent

active

039316378

ABSTRACT:
A video shaping control circuit is utilized to control a video shaping network in a television receiver for controlling the sharpness of the image displayed on a television picture tube. The video shaping control circuit is responsive to an AGC signal such that the sharpness of the displayed image is reduced when the receiver is receiving a weak signal thereby reducing snow or other noise which would otherwise be displayed on the picture tube.

REFERENCES:
patent: 2514112 (1950-07-01), Wright et al.
patent: 2584332 (1952-02-01), Crooker et al.
patent: 2717931 (1955-09-01), Duke
patent: 2910528 (1959-10-01), Petersen
patent: 3706846 (1972-12-01), Siwko

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