Invention Grant
- Patent Title: Constant current source and solid imaging apparatus using the same
- Patent Title (中): 恒流源和使用其的固体成像装置
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Application No.: US13188519Application Date: 2011-07-22
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Publication No.: US08836313B2Publication Date: 2014-09-16
- Inventor: Makoto Takagi , Kazuo Yamazaki
- Applicant: Makoto Takagi , Kazuo Yamazaki
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2010-179744 20100810
- Main IPC: G05F3/08
- IPC: G05F3/08 ; G05F3/26
Abstract:
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.
Public/Granted literature
- US20120038343A1 CONSTANT CURRENT SOURCE AND SOLID IMAGING APPARATUS USING THE SAME Public/Granted day:2012-02-16
Information query
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