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Patent Searching and Data


Title:
COMPENSATION FOR PHOTO SENSOR
Document Type and Number:
WIPO Patent Application WO2007003042
Kind Code:
B1
Abstract:
A method of compensating a photo sensor (and a corresponding photo sensor with compensation) insures the accuracy of the photo sensor, e.g., over environmental variations or photo cell variations. The method comprises: providing a first signal indicative of a light level; providing a second signal indicative of an environmental parameter, e.g., temperature; and calculating, responsive to the first signal and the second signal, a compensated signal that is indicative of an absolute light level. The calculating can be performed by a processor and utilize calibration and compensation information or parameters, which can be obtained experimentally.

Inventors:
SHARMA PRATIBHA (CA)
KURZ GERALD E (CA)
CHO YONG JEONG (CA)
ANDERSON JAMES A (CA)
ANDERSON J DAVID T (CA)
JACKLIN GREGORY R (CA)
Application Number:
PCT/CA2006/001075
Publication Date:
March 08, 2007
Filing Date:
June 30, 2006
Export Citation:
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Assignee:
STREETLIGHT INTELLIGENCE INC (CA)
SHARMA PRATIBHA (CA)
KURZ GERALD E (CA)
CHO YONG JEONG (CA)
ANDERSON JAMES A (CA)
ANDERSON J DAVID T (CA)
JACKLIN GREGORY R (CA)
International Classes:
H01L31/02; H01L31/024; H05B41/02; H05B41/36
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