Color correcting circuit

Abstract

Abstract PURPOSE:To obtain correct color reproducibility by using color correction data to offset against the color characteristic of an image pick-up device. CONSTITUTION:A luminance signal Y and chrominance signals R-Y and B-Y outputted from a veneer complementary color system camera are converted to 4-bit digital signals by A/D converters 16, 18 and 20. A memory 22 outputs the data of a place addressed by the outputs of the A/D converters 16, 18 and 20. Correction data Cyy, Cry and Cby outputted from the memory 22 are converted into analog signals by D/A converters 24, 26 and 28, and impressed on adders 30, 32 and 34, respectively. The adders 30, 32 and 34 add the correction data to the former signals of input terminals 10, 12 and 14. For such a reason, the chrominance signal R-Y becomes larger by the correction data Cry, therefore, the saturation of red is improved.

Inventors

• 👤 Osamu Ueda
• 👤 理 上田
• 👤 Teruo Hieda
• 👤 輝夫 稗田

Bibliographic Details