Compact active pixel with low-noise snapshot image formation

Details Compact active pixel with low-noise snapshot image formation Compact active pixel with low-noise snapshot image formation

2005-11-15

2005-11-15

Johns, Andrew W. (Department: 2621)

Image analysis

Image sensing

C257S291000, C257S292000, C250S208100

Reexamination Certificate

active

06965707

ABSTRACT:
A low-noise active pixel circuit is disclosed that efficiently suppresses reset (kTC) noise by using a compact preamplifier consisting of a photodetector and only four MOSFETs of identical polarity, in conjunction with ancillary circuits located on an imager's periphery. The supporting circuits help the simplified pixel circuit to synchronously acquire (i.e., take a snapshot) an image across an imaging array, read the signal with low noise, and efficiently reset the pixel with low noise.

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