| 摘要 |
PURPOSE:To improve S/N of a system by reducing the switching noise of a shift register consisting of plural shift register chips to, and to provide an image sensor of high S/N using this shift register. CONSTITUTION:Each shift register chip is provided with a clock supply control means 1, which supplies a clock to each D flip flop DFF by the input pulse to a data input terminal D of the first D flip flop DFF of shift operation, and a clock supply stop control means 2 which stops the clock supply to each D flip flop DFF by an input stop pulse from the external. |
