Patents by Inventor Yih-Wey Tang

Yih-Wey Tang 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).

  • Light emitting device driver for driving light emitting device and integrated circuit thereof
    Patent number: 7206015
    Abstract: An integrated circuit includes a light emitting device and a light emitting device driver coupled to the light emitting device. The light emitting device driver is for generating a drive signal to drive the light emitting device to emit light. A light emitting device driver includes a transistor having a first terminal coupled to a light emitting device; a resistor having a first terminal coupled to a second terminal of the transistor, and a second terminal coupled to a supply node; and a comparator having a first input terminal coupled to a reference voltage, a second input terminal coupled to the second terminal of the transistor, and an output terminal coupled to a control terminal of the transistor. The light emitting device driver controls an electrical current flowing through the transistor for driving the light emitting device to emit light.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: April 17, 2007
    Assignee: ADDtek Corp.
    Inventors: Yih-Wey Tang, Yung-Hsin Chiang
  • LIGHT EMITTING DEVICE DRIVER FOR DRIVING LIGHT EMITTING DEVICE AND INTEGRATED CIRCUIT THEREOF
    Publication number: 20060022918
    Abstract: An integrated circuit includes a light emitting device and a light emitting device driver coupled to the light emitting device. The light emitting device driver is for generating a drive signal to drive the light emitting device to emit light. A light emitting device driver includes a transistor having a first terminal coupled to a light emitting device; a resistor having a first terminal coupled to a second terminal of the transistor, and a second terminal coupled to a supply node; and a comparator having a first input terminal coupled to a reference voltage, a second input terminal coupled to the second terminal of the transistor, and an output terminal coupled to a control terminal of the transistor. The light emitting device driver controls an electrical current flowing through the transistor for driving the light emitting device to emit light.
    Type: Application
    Filed: November 22, 2004
    Publication date: February 2, 2006
    Inventors: Yih-Wey Tang, Yung-Hsin Chiang