Method and apparatus for providing flexible photodetector binning
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United States of America Patent
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Apr 29, 2008
Grant Date -
Nov 9, 2006
app pub date -
May 9, 2005
filing date -
May 9, 2005
priority date (Note) -
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Abstract
A method and apparatus for providing flexible photodetector binning are provided. A photodetector having multiple pixels, such as a charged coupled device (CCD), a focal plane array (FPA), an active pixel sensor (APS), or other suitable detector, is provided. A desired bin area is produced in the array by setting at least one of the pixels of the array to a low input impedance level and remaining pixels to a high input impedance level, so that charges generated at the high input impedance pixels diffuse through the detector array to adjacent, low input impedance pixels. The charge is collected at the low input impedance pixels, and corresponds to light detected in the bin area. The impedances of the pixels can be varied to provide bins of desired shapes and/or geometries. The bin areas can extend partially over one or more pixels.
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