The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2026
Filed:
Jun. 23, 2022
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Shang-Fu Yeh, Hsin Chu City, TW;
Chin Yin, Tainan City, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., Hsinchu, TW;
Abstract
A system and a method for time-of-flight (ToF) sensing are provided. The system comprises a sensing module array comprising a plurality of sensing modules. Each of the sensing modules comprises: a plurality of single-photon avalanche diode (SPAD) cells, a periodical correlation detection (PCD) circuit and a time-to-digital converter (TDC). The plurality of SPAD cells is for receiving reflected light pulses. Each of the SPAD cells outputs a pixel event signal with logical high if the SPAD cell receives a reflected light pulse. One of the SPAD cells is a selected SPAD cell. The PCD circuit is configured to count the pixel event signals with logical high for each detection period. The TDC is valid if a count of the pixel event signals with logical high in one detection period reaches a predetermined threshold and if the selected SPAD cell receives a reflected light pulse in the detection period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile