Integrated sensor with frame memory and programmable resolution for light adaptive imaging
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United States of America Patent
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Jun 1, 1999
Grant Date -
N/A
app pub date -
Jun 3, 1997
filing date -
Nov 12, 1996
priority date (Note) -
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Abstract
An image sensor operable to vary the output spatial resolution according to a received light level while maintaining a desired signal-to-noise ratio. Signals from neighboring pixels in a pixel patch with an adjustable size are added to increase both the image brightness and signal-to-noise ratio. One embodiment comprises a sensor array for receiving input signals, a frame memory array for temporarily storing a full frame, and an array of self-calibration column integrators for uniform column-parallel signal summation. The column integrators are capable of substantially canceling fixed pattern noise.
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