Invention Application
- Patent Title: METHOD AND DEVICE OF DISTANCE MEASUREMENT BY TIME-OF-FLIGHT CALCULATION WITH WRAPAROUND
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Application No.: US17655118Application Date: 2022-03-16
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Publication No.: US20220308229A1Publication Date: 2022-09-29
- Inventor: Etienne Bossart , Ji Nan Li , Cedric Patrick Jean Claude Colombo , Thomas Perotto
- Applicant: STMICROELECTRONICS (BEIJING) R&D CO., LTD , STMicroelectronics (Grenoble 2) SAS , STMICROELECTRONICS LTD.
- Applicant Address: CN Beijing; FR Grenoble; HK Kowloon
- Assignee: STMICROELECTRONICS (BEIJING) R&D CO., LTD,STMicroelectronics (Grenoble 2) SAS,STMICROELECTRONICS LTD.
- Current Assignee: STMICROELECTRONICS (BEIJING) R&D CO., LTD,STMicroelectronics (Grenoble 2) SAS,STMICROELECTRONICS LTD.
- Current Assignee Address: CN Beijing; FR Grenoble; HK Kowloon
- Priority: FR2103215 20210329
- Main IPC: G01S17/894
- IPC: G01S17/894 ; G01S17/10 ; G01S7/4863 ; G01S7/48 ; H01L31/107

Abstract:
The present disclosure concerns a method of measuring the distance between a device and an object comprising the steps of determination of a first estimated distance based on the time of flight of first light pulses having a first period; determination of a second estimated distance based on the time of flight of second light pulses having a second period different from the first period; determination based on the interval between the first and second estimated distances of whether the device is in a wraparound area among wraparound areas; and if the device is in a wraparound area among wraparound areas, adding to the first estimated distance a compensation having its value depending on the wraparound area.
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