Patents by Inventor Ko Ching Su

Ko Ching Su 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).

  • Image sticking erasing circuit and method for using the same
    Publication number: 20080225034
    Abstract: The image sticking erasing circuit includes a detection circuit and a switching circuit connected to the detection circuit. The detection circuit is for use in detecting a first voltage signal, which closely follows the variation of the voltage source, and a reference voltage, which loosely follows the variation of the voltage source. When the detection circuit determines that the first voltage signal is lower than a first threshold value, the switching circuit switches the gate of a driving transistor to a second voltage signal, which loosely follows the voltage source. When the detection circuit determines that the reference voltage signal is lower than a second threshold value, the switching circuit switches the gate of a driving transistor to a low voltage state.
    Type: Application
    Filed: March 29, 2007
    Publication date: September 18, 2008
    Applicant: ADVANCED ANALOG TECHNOLOGY, INC.
    Inventors: Wen Chia Pi, Yung Ching Chang, Yen Kuo Lo, Ko Ching Su