Patents by Inventor Theng Quek

Theng Quek 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 pointing device with variable focus
    Patent number: 7339575
    Abstract: A method and apparatus for focusing an image of a work surface on an optical sensor array in an optical pointing device. Light from a region of the work surface is captured by an imaging system incorporating an optical coupling system and the optical sensor array. The focus of the imaging system is adjusted in accordance with the distance between the optical pointing device and the work surface. The distance may be sensed, or inferred by adjusting the imaging system to maximize the focus of the image.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: March 4, 2008
    Assignee: Avago Technologies ECBU IP Pte Ltd
    Inventors: Li Chong Tai, Theng Theng Quek, Ban-Kuan Koay
  • Optical pointing device with variable focus
    Publication number: 20050264531
    Abstract: A method and apparatus for focusing an image of a work surface on an optical sensor array in an optical pointing device. Light from a region of the work surface is captured by an imaging system incorporating an optical coupling system and the optical sensor array. The focus of the imaging system is adjusted in accordance with the distance between the optical pointing device and the work surface. The distance may be sensed, or inferred by adjusting the imaging system to maximize the focus of the image.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 1, 2005
    Inventors: Li Tai, Theng Quek, Ban-Kuan Koay