Methods for enhancing quality of pixel sensor image frames for global shutter imaging

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United States of America Patent

PATENT NO 8681254
APP PUB NO 20120038811A1
SERIAL NO

13283819

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The image qualify of an image frame from a CMOS image sensor array operated in global shutter mode may be enhanced by dispersing or randomizing the noise introduced by leakage currents from floating drains among the rows of the image frame. Further, the image quality may be improved by accounting for time dependent changes in the output of dark pixels in dark pixel rows or dark pixel columns. In addition, voltage and time dependent changes in the output of dark pixels may also be measured to provide an accurate estimate of the noise introduced to the charge held in the floating drains. Such methods may be employed individually or in combination to improve the quality of the image.

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Patent Owner(s)

  • GLOBALFOUNDRIES INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ellis-Monaghan, John J Grand Isle, US 254 2534
Jaffe, Mark D Shelburne, US 146 2262

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