| 摘要 |
PURPOSE:To ease the design of an amplifier, etc. and gain control, and to reduce the error of a white balance by applying dot sequential system to the signals of plural horizontal lines, alternately, and controlling a gain by one amplifier. CONSTITUTION:When horizontal drive lines V1 and V2 come to H, the signals of the line P-1n and of the line P-2n of a photoelectric converting element are read out in vertical signal lines VLA, VLB, and they are transferred onto a horizontal signal line So, when a horizontal switch transistor (TR) H-Tr comes successively to H by signals HAn, HBn. Because the TR H-Tr is made to ON-OFF in regular order by pulses HAn, HBn from a horizontal shift register 10, the signals of the line P-1n and of the line P-2n are arranged alternately by applying dot sequential system on the horizontal signal line So, and besides, the two horizontal lines to be selected are shifted successively by two lines at every completion of the reading-out of a line unit. These signals are gain- controlled by the single amplifier through an output amplifier OA. Thus, the error of the gain accompanied with plural outputs is removed.
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