发明授权
- 专利标题： Constant current source and solid imaging apparatus using the same
- 专利标题（中）： 恒流源和使用其的固体成像装置
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申请号： US13188519申请日： 2011-07-22
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公开(公告)号： US08836313B2公开(公告)日： 2014-09-16
- 发明人: Makoto Takagi , Kazuo Yamazaki
- 申请人： Makoto Takagi , Kazuo Yamazaki
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2010-179744 20100810
- 主分类号： G05F3/08
- IPC分类号： G05F3/08 ; G05F3/26
摘要：
A constant current source has a first current source circuit for outputting a first current; a second current source circuit for outputting a second current according to a reference voltage; a current comparison circuit for comparing magnitudes of the first and second currents; and a current adjustment unit for adjusting a current value of the first current output from the first current source circuit in accordance with a comparison result of the current comparison circuit.
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