ULTRA LOW VOLTAGE CMOS IMAGE SENSOR ARCHITECTURE

An optical sensor has at least one pixel that generates an output voltage that changes at a rate dependent on the light intensity incident on the pixel. The time for the pixel output voltage to change from a first predefined level to a second predefined level is measured, so as to produce an output...

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Bibliographic Details
Main Authors XU CHEN, CHAN MAN SUN, KI WING HUNG
Format Patent
LanguageEnglish
Published 02.10.2008
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:An optical sensor has at least one pixel that generates an output voltage that changes at a rate dependent on the light intensity incident on the pixel. The time for the pixel output voltage to change from a first predefined level to a second predefined level is measured, so as to produce an output indicative of the incident light intensity.
Bibliography:Application Number: US20080059402