Invention Grant
- Patent Title: Globally reset image sensor pixels
- Patent Title (中): 全局重置图像传感器像素
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Application No.: US12130819Application Date: 2008-05-30
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Publication No.: US07781718B2Publication Date: 2010-08-24
- Inventor: Howard E. Rhodes
- Applicant: Howard E. Rhodes
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H01L27/00
- IPC: H01L27/00 ; H04N3/14

Abstract:
An imaging circuit includes a pixel array that is arranged to concurrently reset pixels in a pixel array in response to a global reset signal. The pixels are arranged in rows, such that the rows can be individually selected by a row select line. A reset transistor concurrently resets the pixels by coupling a reset voltage to a floating diffusion of the pixel. A transfer gate transistor selectively couples the floating diffusion to a storage region. A storage gate transistor selectively couples the storage region to a photosensitive region so that the reset transistor, the transfer gate transistor, and the storage gate transistor for each of the pixels can be activated in response to the global reset signal. A double correlated sampler may be used to provide a correlated double sample using a first sampled voltage of a reset voltage and a second sampled voltage of a pixel voltage that is produced when a photodiode region is exposed to incident light.
Public/Granted literature
- US20090294632A1 GLOBALLY RESET IMAGE SENSOR PIXELS Public/Granted day:2009-12-03
Information query
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