Invention Grant
- Patent Title: Image sensing device and imaging system
- Patent Title (中): 图像感测装置及成像系统
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Application No.: US12533446Application Date: 2009-07-31
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Publication No.: US08199235B2Publication Date: 2012-06-12
- Inventor: Akira Okita , Satoshi Suzuki , Takashi Matsuda
- Applicant: Akira Okita , Satoshi Suzuki , Takashi Matsuda
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2008-222794 20080829
- Main IPC: H04N5/335
- IPC: H04N5/335

Abstract:
An image sensing device includes a pixel array in which a plurality of pixels are arrayed, and a plurality of column amplification units that amplify a plurality of signals that are output in parallel from the pixel array. Each of the column amplification units includes a differential amplifier including an amplification unit and a constant current circuit, with the amplification unit amplifying a signal that is output from the pixels and outputting the signal to an output node, and the constant current circuit being arranged between the amplification unit and a ground terminal and supplying a current to the amplification unit. Each amplification unit also includes a clip unit that clips a voltage of the output node when the differential amplifier amplifies the signal and thereby clipping a voltage of a connection node connecting the amplification unit to the constant current circuit in the differential amplifier.
Public/Granted literature
- US20100053396A1 IMAGE SENSING DEVICE AND IMAGING SYSTEM Public/Granted day:2010-03-04
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