Patents by Inventor Chih Hung Tseng

Chih Hung Tseng 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-BALANCED ACTIVE CURRENT BRIDGE FOR MEASURING THE IMPEDANCE OF AN EXTERNAL DEVICE
    Publication number: 20040036488
    Abstract: A self-balanced active current bridge for measuring the impedance of an external device or an output current, comprising an input potential source and operation amplifier connected to the input potential source via a first input terminal of the operation amplifier. A balancing bridge is coupled to a first output terminal and a second output terminal of the operation amplifier. A controlled potential source is coupled to the balancing bridge and used to maintain the balance state of the balancing bridge. A resistance is connected between the balancing bridge and an output terminal of the controlled potential source. Wherein the external device is connected a first node between the balancing bridge and a second input terminal of the operation amplifier.
    Type: Application
    Filed: August 27, 2002
    Publication date: February 26, 2004
    Inventors: Wen-Lung Shieh, Chih-Hung Tseng
  • Self-balanced active current bridge for measuring the impedance of an external device
    Patent number: 6696846
    Abstract: A self-balanced active current bridge for measuring the impedance of an external device or an output current, including an input potential source and operation amplifier connected to the input potential source via a first input terminal of the operation amplifier. A balancing bridge is coupled to a first output terminal and a second output terminal of the operation amplifier. A controlled potential source is coupled to the balancing bridge and used to maintain the balance state of the balancing bridge. A resistance is connected between the balancing bridge and an output terminal of the controlled potential source. Wherein the external device is connected a first node between the balancing bridge and a second input terminal of the operation amplifier.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: February 24, 2004
    Assignee: C-Media Electronics Inc.
    Inventors: Wen-Lung Shieh, Chih-Hung Tseng
  • Computer mainframe
    Patent number: D437595
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: February 13, 2001
    Assignee: Enlight Corporation
    Inventors: Shen Jih Chang, Chih Hung Tseng
  • Barbecue grill
    Patent number: D486033
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: February 3, 2004
    Assignee: Concept Innovation, Inc.
    Inventor: Chih-Hung Tseng
  • Barbecue grill lid
    Patent number: D488025
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: April 6, 2004
    Assignee: Concept Innovation, Inc.
    Inventor: Chih-Hung Tseng