Color signal adjustment apparatus

Details Color signal adjustment apparatus Color signal adjustment apparatus

1997-02-18

2000-03-21

Lee, Michael H.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348645, 348649, H04N 5228

Patent

active

060408553

ABSTRACT:
A color signal adjustment circuit used in, for example, a camera device, in which specified color signals can be adjusted and, in addition, color signals can be adjusted with a smaller information volume. A chroma SIO 41 generates a pre-set control signal, under control by a micro-computer 50 subject to a setting operation on an operating unit, and judges, at the time of conversion of the color difference signal in the phase/gain control circuit 36, if the phase processing or gain processing is carried out, which of the (R-Y) signal and the (B-Y) signal is controlled and in which quadrant the color adjustment is made, in order to send X and Z signals meeting with these judgment conditions to a phase/gain adjustment circuit 36B pixel-by-pixel. The phase/gain adjustment circuit 36B generates (R-Y) and (B-Y) signals from (R-G) and (B-G) signals based on the X and Z signals.

REFERENCES:
patent: 3662097 (1972-05-01), Rennick
patent: 4364080 (1982-12-01), Vidovic
patent: 5272523 (1993-12-01), Yu
patent: 5315413 (1994-05-01), Yamamoto et al.
Journal of the SMPTE, vol. 78, No. 9, Sep. 1969, pp. 696-700, XP002040858, J. Monahan et al. "Color Correction Techniques For Television Cameras".

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