Patents by Inventor Kuei-Yang Tseng

Kuei-Yang Tseng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • SINGLE PHOTON AVALANCHE DIODE BASED OPTICAL SENSOR AND EVENT-BASED VISION SENSOR
    Publication number: 20250085162
    Abstract: There is provided an optical sensor including an SPAD pixel array, multiple counters and a processor. The multiple counters count photon events of the SPAD pixel array to output an event-based vision sensor (EVS) frame per EVS period. The processor determines an index state of each pixel of the SPAD pixel array by comparing a counting value of each pixel respectively at a predetermined number of checking points with two predetermined thresholds, and calculates an index change of the index state associated with each pixel between adjacent EVS frames. The processor further changes the EVS period and/or adds a count offset to the counting value of each pixel to improve sensitivity of the event-based vision sensor.
    Type: Application
    Filed: September 16, 2024
    Publication date: March 13, 2025
    Inventors: TSO-SHENG TSAI, KUEI-YANG TSENG, YUEH-LIN CHUNG
  • Single photon avalanche diode based optical sensor, event-based vision sensor and operating method thereof
    Patent number: 12117339
    Abstract: There is provided an optical sensor including an SPAD pixel array, multiple counters and a processor. The multiple counters count photon events of the SPAD pixel array to output an event-based vision sensor (EVS) frame per EVS period. The processor determines an index state of each pixel of the SPAD pixel array by comparing a counting value of each pixel respectively at a predetermined number of checking points with two predetermined thresholds, and calculates an index change of the index state associated with each pixel between adjacent EVS frames. The processor further changes the EVS period and/or adds a count offset to the counting value of each pixel to improve sensitivity of the event-based vision sensor.
    Type: Grant
    Filed: September 11, 2023
    Date of Patent: October 15, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Tso-Sheng Tsai, Kuei-Yang Tseng, Yueh-Lin Chung