Invention Grant
US08575533B2 High dynamic range imager circuit and method for reading high dynamic range image
有权
高动态范围成像电路和读取高动态范围图像的方法
- Patent Title: High dynamic range imager circuit and method for reading high dynamic range image
- Patent Title (中): 高动态范围成像电路和读取高动态范围图像的方法
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Application No.: US13373265Application Date: 2011-11-09
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Publication No.: US08575533B2Publication Date: 2013-11-05
- Inventor: Wen-Cheng Yen , Ching-Wei Chen , Chao-Chi Lee
- Applicant: Wen-Cheng Yen , Ching-Wei Chen , Chao-Chi Lee
- Applicant Address: TW Hsin-Chu
- Assignee: Pixart Imaging Incorporation, R.O.C.
- Current Assignee: Pixart Imaging Incorporation, R.O.C.
- Current Assignee Address: TW Hsin-Chu
- Agency: Tung & Associates
- Priority: TW100112180A 20110408
- Main IPC: H01L27/148
- IPC: H01L27/148
Abstract:
The present invention discloses a high dynamic range imager circuit and a method for reading high dynamic range image with an adaptive conversion gain. The high dynamic range image circuit includes a variable capacitor. The capacitance of the variable capacitor is adjusted according to sensed light intensity or by internal feedback control, to adaptively adjust the conversion gain of the high dynamic range image circuit as it reads a signal which relates to a pixel image sensed by an image sensor device. In each cycle, the signal can be read twice or more with different dynamic ranges, to enhance the accuracy of the signal.
Public/Granted literature
- US20120256077A1 High dynamic range imager circuit and method for reading high dynamic range image Public/Granted day:2012-10-11
Information query
IPC分类:
