Video camera having a solid-type image sensor

Details Video camera having a solid-type image sensor Video camera having a solid-type image sensor

1992-11-25

1996-04-23

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348273, H04N 5217

Patent

active

055108350

ABSTRACT:
Output signals of a solid state image sensor 1 are processed in a signal processing circuit 3 and then supplied as brightness signals to a variable gain circuit 4, and gain of the circuit is varied for each color separation filter provided in the solid state image sensor 1, and in the case of achromatic objects, signal amounts for each color separation filter are made equal and moire is suppressed. In such a video camera, a noise reducer circuit 5 is provided and output signals of the variable gain circuit 4 are supplied to the noise reducer circuit 5 and adding processing is carried out during a plurality of horizontal scanning periods neighboring vertically thereby level variation (line pair) of the brightness signals for each horizontal scanning period is suppressed. A vertical resolution correction circuit 6 generates a vertical resolution correction signal from output signals of the signal processing circuit 3 there by degradation of the vertical resolution of the brightness signals is corrected.

REFERENCES:
patent: 4523229 (1985-06-01), Kanmoto
patent: 4712135 (1987-12-01), Hashimoto et al.
patent: 4714955 (1987-12-01), Nishimura
patent: 4748499 (1988-05-01), Ueda
patent: 4903121 (1990-02-01), Uomori et al.
patent: 5043802 (1991-08-01), Tarumizu

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