Patents by Inventor Ya-Tung Kao

Ya-Tung Kao 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).

  • Chargers, systems and methods for detecting a power source
    Patent number: 8242742
    Abstract: A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: August 14, 2012
    Assignee: O2Micro, Inc
    Inventors: Han-Jung Kao, Guoxing Li, Ya-Tung Kao, Wei Zhang
  • Apparatuses and methods for detecting power source
    Publication number: 20080303486
    Abstract: A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 11, 2008
    Inventors: Han-Jung Kao, Guoxing Li, Ya-Tung Kao, Wei Zhang