Patents by Inventor Tony Sen Liew

Tony Sen Liew 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 having a ring pixel array
    Patent number: 7282694
    Abstract: An optical navigation system having an optical navigation integrated circuit (“navigation IC”) is described. The optical navigation system may include an emitter module and a pixel array surrounding the emitter module. The optical navigation system may further include a ring optical system located on the surface of the navigation IC over the pixel array.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: October 16, 2007
    Assignee: Avago Technologies ECBU IP (Singapore) Pte Ltd
    Inventors: Chin Yun Lee, Sai Mun Lee, Tony Sen Liew, Shan Chong Tan, Bernard Lye Hock Chan