Invention Grant
- Patent Title: Ambient luminosity level detection
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Application No.: US15890533Application Date: 2018-02-07
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Publication No.: US11029200B2Publication Date: 2021-06-08
- Inventor: Pascal Mellot
- Applicant: STMicroelectronics (Grenoble 2) SAS
- Applicant Address: FR Grenoble
- Assignee: STMicroelectronics (Grenoble 2) SAS
- Current Assignee: STMicroelectronics (Grenoble 2) SAS
- Current Assignee Address: FR Grenoble
- Agency: Crowe & Dunlevy
- Priority: FR1260168 20121025
- Main IPC: G01J1/42
- IPC: G01J1/42 ; G01J1/18 ; G01J1/44 ; H04N1/00

Abstract:
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.
Public/Granted literature
- US20180164155A1 AMBIENT LUMINOSITY LEVEL DETECTION Public/Granted day:2018-06-14
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