Apparatus and a method for low noise sensing
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United States of America Patent
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May 3, 2011
Grant Date -
Aug 16, 2007
app pub date -
Nov 17, 2004
filing date -
Dec 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a method and apparatus. The apparatus includes a pixels (10) adapted to receive light and to output a current representative of the received light; a feedback circuitry (20), connected to the pixel (10), adapted to receive said current and to receive a reference current (Iref) and to provide a feedback signal to the pixel (10) at least during at least a reset stage of the pixel (10). The method includes: (i) receiving light, by a pixel 10), and providing a pixel output signal representative of the received light; (ii) receiving, by a feedback circuitry, the pixel output signal; and (iii) providing multiple feedback signals to the pixel at least during a reset stage of the pixel (10).
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