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Active-Pixel Image Sensor With Analog-To-Digital ConvertersProposed single-chip integrated-circuit image sensor contains 128 x 128 array of active pixel sensors at 50-micrometer pitch. Output terminals of all pixels in each given column connected to analog-to-digital (A/D) converter located at bottom of column. Pixels scanned in semiparallel fashion, one row at time; during time allocated to scanning row, outputs of all active pixel sensors in row fed to respective A/D converters. Design of chip based on complementary metal oxide semiconductor (CMOS) technology, and individual circuit elements fabricated according to 2-micrometer CMOS design rules. Active pixel sensors designed to operate at video rate of 30 frames/second, even at low light levels. A/D scheme based on first-order Sigma-Delta modulation.
Document ID
19950065473
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Fossum, Eric R.
(Caltech)
Mendis, Sunetra K.
(Caltech)
Pain, Bedabrata
(Caltech)
Nixon, Robert H.
(Caltech)
Date Acquired
August 17, 2013
Publication Date
July 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 7
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
NPO-19117
Accession Number
95B10314
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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