READ-OUT CIRCUITRY FOR AN IMAGE SENSOR
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United States of America Patent
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app pub date -
Aug 22, 2016
filing date -
Nov 29, 2013
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Abandoned
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Abstract
An array of image sensing elements is arranged in rows and columns. A readout circuit for each column includes a circuit configured to receive a column select signal. A memory stores data indicative of a voltage of an image sensing element which is being read. An analog to digital conversion circuit provides an output to the memory to control the storing of data. The output is dependent on the voltage of the image sensing element. Power control circuitry operates to disable, at least partially, the analog to digital conversion circuit when the column has not been selected.
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