Pixel cell and its method for applying voltage generated in a photosensor to a gate capacitance and alternately resetting the applied voltage
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United States of America Patent
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Oct 25, 2016
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N/A
app pub date -
Dec 24, 2013
filing date -
Feb 24, 2007
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Abstract
A pixel cell, and a method of use thereof, the pixel cell including: an output, a photosensor configured to generate a first measuring current in a first measurement cycle and a second measuring current in a second measurement cycle as a function of radiation, an output node, a power storage device configured so that in a first operating mode a current can be injected by the power storage device as a function of the first measuring current, and so that in a second operating mode the power storage device is configured to hold the injected current so that the injected current can be detected at the output node, and a switching unit configured to form a difference between the injected current and the second measuring current at the output node in a reading cycle and to couple the output node to the output.
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