Patents by Inventor Kee Seng Soo

Kee Seng Soo 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).

  • Self-calibrating optical feedback system in a laser mouse
    Patent number: 8022931
    Abstract: A self-calibrating optical feedback system for an optical navigation device. The self-calibrating optical feedback system includes a light source, an illumination lens, a beam splitter, and an optical feedback device. The illumination lens is coupled relative to the light source. The light source emits light based on a programming current. The illumination lens directs the light towards a beam splitter. The beam splitter partially reflects the light directed from the illumination lens. The optical feedback device detects the partially reflected light from the beam splitter and generates a feedback signal to modify an intensity of the light emitted by the light source. Embodiments of the self-calibrating optical feedback system maintain the output intensity of a laser driven optical navigation device below an eye-safety level.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: September 20, 2011
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Kee Seng Soo, Yat Kheng Leong, Sai Mun Lee
  • SELF-CALIBRATING OPTICAL FEEDBACK SYSTEM IN A LASER MOUSE
    Publication number: 20090140984
    Abstract: A self-calibrating optical feedback system for an optical navigation device. The self-calibrating optical feedback system includes a light source, an illumination lens, a beam splitter, and an optical feedback device. The illumination lens is coupled relative to the light source. The light source emits light based on a programming current. The illumination lens directs the light towards a beam splitter. The beam splitter partially reflects the light directed from the illumination lens. The optical feedback device detects the partially reflected light from the beam splitter and generates a feedback signal to modify an intensity of the light emitted by the light source. Embodiments of the self-calibrating optical feedback system maintain the output intensity of a laser driven optical navigation device below an eye-safety level.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Kee Seng Soo, Yat Kheng Leong, Sai Mun Lee