Patents by Inventor Ka Lap Tong

Ka Lap Tong 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 module for extreme temperature operation and method for increasing life time of OFN module
    Patent number: 9778786
    Abstract: An optical finger navigation module includes a light source mounted below a window plate formed on a housing of the module, a driver for outputting a current to the light source, an environmental sensor for sensing an environmental condition and providing a signal, and a sensor integrated circuit including a processor coupled with the environmental sensor for reading the signal and generating a compensated current that corresponds to the signal based on a compensation curve tailor-made for the light source and derived from a compensation algorithm using compensation factors. A method for increasing lifetime of the module is also disclosed.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 3, 2017
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Ka Lap Tong, Vincent Wai Hung
  • OPTICAL FINGER NAVIGATION MODULE FOR EXTREME TEMPERATURE OPERATION AND METHOD FOR INCREASING LIFE TIME OF OFN MODULE
    Publication number: 20170269760
    Abstract: An optical finger navigation module includes a light source mounted below a window plate formed on a housing of the module, a driver for outputting a current to the light source, an environmental sensor for sensing an environmental condition and providing a signal, and a sensor integrated circuit including a processor coupled with the environmental sensor for reading the signal and generating a compensated current that corresponds to the signal based on a compensation curve tailor-made for the light source and derived from a compensation algorithm using compensation factors. A method for increasing lifetime of the module is also disclosed.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 21, 2017
    Inventors: Ka Lap Tong, Vincent Wai Hung