Image sensors generating digital signals from light integration processes
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United States of America Patent
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Jul 1, 2003
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app pub date -
Aug 20, 1998
filing date -
Aug 20, 1998
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Abstract
The purpose of the present invention is to provide a generic solution for direct readout of the charge signals from the photodetectors in an image sensor to minimize possible signal distortions. The disclosed image sensor uses a time measurement circuit for each of the photodetectors. The time elapsed for each of the photodetectors to reach a reference signal is measured and converted to a digital representation that is subsequently readout as the digital signals.
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