Patents by Inventor Bee Hui Ch'ng

Bee Hui Ch'ng 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).

  • Optical finger navigation utilizing quantized movement information
    Patent number: 8212794
    Abstract: A user input device includes an optical element comprising a finger interface surface, a light source in optical communication with the finger interface surface and configured to provide light from the light source to the finger interface surface, a sensor array configured to detect light reflected from the finger interface surface in response to contact between a finger and the finger interface surface, a navigation engine coupled to the sensor array, the navigation engine configured to generate lateral movement information, which is indicative of lateral movement of the finger relative to the sensor array, in response to the detected light, wherein the lateral movement information comprises first and second orthogonal components, and a quantization engine coupled to the navigation engine, the quantization engine configured to compare the first orthogonal component to the second orthogonal component and to generate first and second quantized orthogonal components in response to the comparison.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 3, 2012
    Inventors: Wui-Pin Lee, Willie Song, Bee Hui Ch'ng
  • OPTICAL FINGER NAVIGATION UTILIZING QUANTIZED MOVEMENT INFORMATION
    Publication number: 20100079411
    Abstract: A user input device includes an optical element comprising a finger interface surface, a light source in optical communication with the finger interface surface and configured to provide light from the light source to the finger interface surface, a sensor array configured to detect light reflected from the finger interface surface in response to contact between a finger and the finger interface surface, a navigation engine coupled to the sensor array, the navigation engine configured to generate lateral movement information, which is indicative of lateral movement of the finger relative to the sensor array, in response to the detected light, wherein the lateral movement information comprises first and second orthogonal components, and a quantization engine coupled to the navigation engine, the quantization engine configured to compare the first orthogonal component to the second orthogonal component and to generate first and second quantized orthogonal components in response to the comparison.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Wui-Pin Lee, Willie Song, Bee Hui Ch'ng