Invention Grant
US08259196B2 Comparator, method of calibrating comparator, solid-state imaging device, and camera system
有权
比较器，校准比较器的方法，固态成像装置和相机系统
- Patent Title: Comparator, method of calibrating comparator, solid-state imaging device, and camera system
- Patent Title (中): 比较器，校准比较器的方法，固态成像装置和相机系统
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Application No.: US12494865Application Date: 2009-06-30
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Publication No.: US08259196B2Publication Date: 2012-09-04
- Inventor: Rei Yoshikawa , Atsushi Suzuki , Keiji Yamaguchi
- Applicant: Rei Yoshikawa , Atsushi Suzuki , Keiji Yamaguchi
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: SNR Denton US LLP
- Priority: JP2008-175023 20080703
- Main IPC: H04N5/217
- IPC: H04N5/217 ; H04N3/14 ; H04N5/335 ; H04N5/235 ; H04N9/64 ; H04N5/228
Abstract:
A comparator includes: a signal input terminal; a capacitor connected between the signal input terminal and a signal line; and a switching transistor for calibration which is turned on/off to periodically charge the capacitor with a voltage difference between a signal voltage and an operating point of the comparator, wherein an on-resistance of the switching transistor which is turned on when performing the charging is dynamically controlled by a control pulse having a limited amplitude.
Public/Granted literature
- US20100002120A1 COMPARATOR, METHOD OF CALIBRATING COMPARATOR, SOLID-STATE IMAGING DEVICE, AND CAMERA SYSTEM Public/Granted day:2010-01-07
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