| 摘要 |
PURPOSE:To simplify the adjustment of a color tone by obtaining the color component signal of G as a reference with the operation of a color tone setting switch and changing the rate of a gain between all the color component signals with phasedly causing the color component signal of R and B to be variable. CONSTITUTION:A key scan circuit 36 successively scans color tone setting switches 32a, 32b, 34a and 34b and detects a key switch to be pushed and a detecting signal is supplied to a CPU38. The CPU38 outputs digital data, which are increased or decreased in correspondence to the pushed key switch, to correspondent D/A converters 40 and 42. When a CCD20 outputs the color component image signals of R, B and G, a multiplexer 44 respectively connects first, second and third input edges to an automatic gain adjusting circuit AGC28. Since the third input terminal to give the gain of the G signal is connected to a reference power source 46, the color tone can be adjusted by phasedly causing the gain of the R and B color component signals to be variable. |
