| 摘要 |
PROBLEM TO BE SOLVED: To perform various reading such as partial reading, thinning reading including interlace with a simple configuration by switching the output pulse of a 1st shift register receiving an input signal at prescribed time previous to time when a transfer pulse is outputted to a 2nd shift register in accordance with the prescribed time. SOLUTION: This circuit includes shift registers SR1 and SR2 and a switch group SW3. An input signal (ϕin) is inputted to the shift register SR1. Since a capacitance exists between the input gate of an inverter and a ground (earth), a switch can be regarded as a sample-and-hold circuit that makes the capacitance an additional capacitance in a shift register consisting of the switch and the inverter. By noting this point, it is regarded that plural sample hold circuits are connected in parallel to the common additional capacitance, the input timing and hold timing of a signal are adjusted, and a prescribed reading operation is made possible.
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