| 摘要 |
PROBLEM TO BE SOLVED: To provide an image-signal processing circuit whose circuit scale can be reduced more than that in conventional cases. SOLUTION: In the processing circuit, a white balancing operation is performed with reference to the read-out signal of a CCD. In a white balancing block 202, a first switching circuit 101 and a second switching circuit 102 which are changed over by a control signal obtained by dividing a system clock (a pixel clock) into two and which can select and output two kinds of gain data to the horizontal direction are installed. A third switching circuit 104 to which outputs of the first and second switching circuits 101, 102 are input, which is changed over by a control signal obtained by dividing a horizontal reference signal into two and which can select and output a gain every other line in the vertical direction is installed. One multiplier 106 whose gain is designated by the third switching circuit 104 and which adds a gain to an input signal is provided.
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