Patents by Inventor Siew Fong Ng

Siew Fong 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 navigation system with lift detection
    Patent number: 8358271
    Abstract: An optical navigation system with a lift detection module is provided for preventing cursor movement if the optical navigation system has been lifted from the navigation surface. The optical navigation system may include an image sensor, a controller and a lift detection module. The lift detection module may be operatively coupled with the image sensor and the controller to selectively report a motion data upon determining a lift by comparing the average of the photosensitive pixel elements with a pixel element threshold value and the surface quality value with a surface quality threshold value. The lift detection module may be incorporated in a microcontroller, wherein the microcontroller may be added to a navigation system to provide an additional lift detection feature.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: January 22, 2013
    Assignee: Avago Technologies ECBU (Singapore) Pte. Ltd.
    Inventors: Willie Song, Siew Fong Ng, Beng Chye Lye, Zi Hao Tan
  • OPTICAL NAVIGATION SYSTEM WITH LIFT DETECTION
    Publication number: 20110310018
    Abstract: An optical navigation system with a lift detection module is provided for preventing cursor movement if the optical navigation system has been lifted from the navigation surface. The optical navigation system may include an image sensor, a controller and a lift detection module. The lift detection module may be operatively coupled with the image sensor and the controller to selectively report a motion data upon determining a lift by comparing the average of the photosensitive pixel elements with a pixel element threshold value and the surface quality value with a surface quality threshold value. The lift detection module may be incorporated in a microcontroller, wherein the microcontroller may be added to a navigation system to provide an additional lift detection feature.
    Type: Application
    Filed: June 22, 2010
    Publication date: December 22, 2011
    Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.
    Inventors: Willie Song, Siew Fong Ng, Beng Chye Lye, Zi Hao Tan