Carrier level balancing circuit for color camera

Details Carrier level balancing circuit for color camera Carrier level balancing circuit for color camera

1993-04-22

1995-02-07

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348655, H04N 964, H04N 907

Patent

active

053879317

ABSTRACT:
A carrier level balancing circuit in which a color aliasing signal occurring when a cameraman takes a picture of an object of an achromatic (black and white) color can be canceled completely. In a carrier level balancing circuit for a color camera formed of a CCD solid state image pickup device of an all pixel separately read out system, two-channel color signals output from the CCD solid state image pickup device are multiplied with independent balance coefficients at every line by multipliers while the balance coefficients are switched in a dot-sequential fashion. Also, values of these balance coefficients are set by a coefficient setting circuit in response to color temperature information. Thus, the carrier levels can be balanced over a range of color temperatures.

REFERENCES:
patent: 4638352 (1987-01-01), Noda et al.
patent: 4714955 (1987-12-01), Nishimura et al.
patent: 4860092 (1989-08-01), Hieda
patent: 5198890 (1993-03-01), Suga

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