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:
Jun. 16, 2026
Filed:
Apr. 11, 2022
Pixart Imaging Inc., Hsin-Chu City, TW;
Yueh-Lin Chung, Hsin-Chu City, TW;
Tso-Sheng Tsai, Hsin-Chu City, TW;
PixArt Imaging Inc., Hsin-Chu City, TW;
Abstract
An optical time-of-flight sensor includes a sensor array and a channel sampling circuit. The channel sampling circuit is arranged for receiving a photon pulse signal, generated from a sensor unit of the sensor array, receiving a first channel selection signal to generate a first freezing signal, generating a first channel event signal to a first counting circuit in response to the first freezing signal and the photon pulse signal, and receiving the first channel event signal to generate and count a pulse number of the photon pulse signal received by the first channel; when a rising edge of the photon pulse signal occurs, the first freezing signal is kept at a previous state until a falling edge of the photon pulse signal occurs.