Signal processing circuit

Details Signal processing circuit Signal processing circuit

1981-08-18

1983-11-15

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 32, 358 39, 358 51, H04N 904, H04N 907

Patent

active

044159234

ABSTRACT:
A signal processing circuit for a color video camera. Image of an object is focused onto a plurality of light-sensitive elements (W, Ye, G, Cy) through a plurality of optical color filters which are in color complementating relationship and is taken out in terms of a luminance signal (Y), a red color signal (R) and a blue color signal (B) through photo-electric conversion. A green color signal is prepared on the basis of the red color signal, the blue color signal and the luminance signal. Gamma correction is made on the green color signal, the red color signal and the blue color signal. A luminance signal is reconstructed on the basis of the green color signal which has undergone the gamma-correction, and the gamma-corrected red and blue color signals. A color video signal which has undergone correct gamma-correction is thus obtained.

REFERENCES:
patent: 2858362 (1958-10-01), Bedford
patent: 3934265 (1976-01-01), Tanaka
patent: 4166280 (1979-08-01), Poole
All Solid State Color Camera With Single-Chip MOS Imager, by Nabeyama, IEEE Transactions on Comsumers Electronis, vol. CE-27, Feb. 1981.

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