发明名称 |
Image sensor driving circuit |
摘要 |
An image sensor driving circuit for driving an image sensor by applying a voltage thereto comprises a voltage supplying circuit for supplying a positive or negative polarity voltage to the image sensor responsive to a control signal, a converting circuit for converting an output photocurrent of the image sensor into a detection voltage, an inverting circuit for inverting the detection voltage responsive to the control signal, and a control circuit for generating the control signal. The control signal has a predetermined period so that the voltage supplying circuit alternately supplies the positive and negative polarity voltages with the predetermined period and the inverting circuit inverts the detection voltage only during one of first and second halves of each period of the control signal.
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申请公布号 |
US4788595(A) |
申请公布日期 |
1988.11.29 |
申请号 |
US19870120541 |
申请日期 |
1987.11.13 |
申请人 |
RICOH COMPANY, LTD.;TOHOKU RICOH CO., LTD. |
发明人 |
TAMADA, MASAYUKI;TAKAHASHI, JUNICHI |
分类号 |
H04N1/028;H04N1/19;H04N5/217;H04N5/335 |
主分类号 |
H04N1/028 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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