Patents by Inventor Priscilla Tze-Wei GOH

Priscilla Tze-Wei GOH 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).

  • Patent number: 12105297
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Grant
    Filed: August 21, 2023
    Date of Patent: October 1, 2024
    Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
  • Publication number: 20240230321
    Abstract: There is provided an optical encoding system including a photodiode array and a code disk opposite to each other. The code disk is arranged with multiple code slits at a ring area corresponding to the photodiode array. A length direction of each photodiode of the photodiode array has at least one deviation angle with respect to a length direction of the multiple code slits to reduce the total harmonic distortion in photocurrents.
    Type: Application
    Filed: October 21, 2022
    Publication date: July 11, 2024
    Inventors: Meng-Yee LIM, Priscilla Tze-Wei GOH, Kuan-Choong SHIM, Gim-Eng CHEW
  • Patent number: 12025476
    Abstract: There is provided an optical encoding system including a processor, and a photodiode array and a code disk opposite to each other. The photodiode array includes a detection photodiode group and a calibration photodiode group. If there is a position deviation between the photodiode array and the code disk, the processor determines whether to utilize detection signals of the calibration photodiode group according to phase shifts between detection signals outputted by the detection photodiode group so as to eliminate the phase shifts.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: July 2, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan-Choong Shim, Meng-Yee Lim, Priscilla Tze-Wei Goh, Gim-Eng Chew
  • Patent number: 11994416
    Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: May 28, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan-Choong Shim, Gim-Eng Chew, Priscilla Tze-Wei Goh, Meng-Yee Lim
  • Publication number: 20240133680
    Abstract: There is provided an optical encoding system including a photodiode array and a code disk opposite to each other. The code disk is arranged with multiple code slits at a ring area corresponding to the photodiode array. A length direction of each photodiode of the photodiode array has at least one deviation angle with respect to a length direction of the multiple code slits to reduce the total harmonic distortion in photocurrents.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Inventors: Meng-Yee LIM, Priscilla Tze-Wei GOH, Kuan-Choong SHIM, Gim-Eng CHEW
  • Publication number: 20230393407
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 7, 2023
    Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
  • Publication number: 20230349732
    Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
    Type: Application
    Filed: July 10, 2023
    Publication date: November 2, 2023
    Inventors: KUAN-CHOONG SHIM, GIM-ENG CHEW, PRISCILLA TZE-WEI GOH, MENG-YEE LIM
  • Patent number: 11774771
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: October 3, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
  • Patent number: 11740108
    Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: August 29, 2023
    Assignee: PIXART IMAGING INC.
    Inventors: Kuan-Choong Shim, Gim-Eng Chew, Priscilla Tze-Wei Goh, Meng-Yee Lim
  • Publication number: 20220269093
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
  • Patent number: 11372255
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: June 28, 2022
    Assignee: PIXART IMAGING INC.
    Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
  • Publication number: 20220163353
    Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
    Type: Application
    Filed: November 25, 2020
    Publication date: May 26, 2022
    Inventors: Kuan-Choong SHIM, Gim-Eng CHEW, Priscilla Tze-Wei GOH, Meng-Yee LIM
  • Publication number: 20210255470
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
  • Patent number: 11029527
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, a light sensor, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light sensor is configured to receive at least a part of the light beam reflected or scattered by the illuminated surface.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: June 8, 2021
    Assignee: PIXART IMAGING INC.
    Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
  • Publication number: 20210003853
    Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, a light sensor, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light sensor is configured to receive at least a part of the light beam reflected or scattered by the illuminated surface.
    Type: Application
    Filed: July 5, 2019
    Publication date: January 7, 2021
    Inventors: Hun-Kwang LEE, Sai-Mun LEE, Priscilla Tze-Wei GOH, Lye-Pin CHU