Ambient luminosity level detection

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United States of America Patent

PATENT NO 11029200
APP PUB NO 20180164155A1
SERIAL NO

15890533

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Abstract

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The following steps are performed in connection with a photodiode circuit: a) resetting the photodiode circuit; b) determining when a photodiode voltage changes in response to illumination to reach a threshold; and c) updating a counter in response to the determination in step b). The steps a) to c) are repeated until an end of a measurement period is reached. The value of the counter at the end of the measurement period is then output to indicate an intensity of the illumination.

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Patent Owner(s)

  • STMICROELECTRONICS (GRENOBLE 2) SAS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mellot, Pascal Lans en Vercors, FR 64 420

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