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WIDE DYNAMIC RANGE IMAGE SENSOR UTILIZING SWITCH CURRENT SOURCE AT PRE-DETERMINED SWITCH VOLTAGE PER PIXEL
WIDE DYNAMIC RANGE IMAGE SENSOR UTILIZING SWITCH CURRENT SOURCE AT PRE-DETERMINED SWITCH VOLTAGE PER PIXEL
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机译:利用每像素预定开关电压的开关电流源实现宽动态范围图像传感器
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摘要
Disclosed are embodiments of a pixel imaging circuit that incorporates a standard photodiode. However, the imaging circuit is modified with a feedback loop to provide a first photo response over a first portion of the light sensing range (e.g., at higher light intensity range) and a second reduced-sensitivity photo response over a second portion of the light sensing range (i.e., at a lower light intensity range), thereby extending the circuits dynamic range of coverage. Also disclosed are embodiments of an associated imaging method and a design structure that is embodied in a machine readable medium and used in the imaging circuit design process.
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