Patents by Inventor Tung-An YAO

Tung-An YAO 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).

  • Operating method for a fingerprint sensing device and fingerprint sensing system
    Patent number: 10121048
    Abstract: A fingerprint sensing system has a fingerprint sensing device and a power supply circuit. The fingerprint sensing device has a high-voltage input terminal and a low-voltage input terminal. During scan phases of the fingerprint sensing device, the power supply circuit provides a first voltage to the high voltage input terminal and provides a second voltage to the low voltage input terminal. During the read phases of the fingerprint sensing device, the power supply circuit provides a third voltage to the high voltage input terminal and provides a fourth voltage to the low voltage input terminal. A first voltage difference is between the first voltage and the second voltage. A second voltage difference is between the third voltage and the fourth voltage. The first voltage difference is greater than the second voltage difference.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 6, 2018
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi Yang, Jui-Che Lin, Tung-An Yao, Chung-Han Cheng, Chung-An Tang
  • OPERATING METHOD FOR A FINGERPRINT SENSING DEVICE AND FINGERPRINT SENSING SYSTEM
    Publication number: 20180032779
    Abstract: A fingerprint sensing system has a fingerprint sensing device and a power supply circuit. The fingerprint sensing device has a high-voltage input terminal and a low-voltage input terminal. During scan phases of the fingerprint sensing device, the power supply circuit provides a first voltage to the high voltage input terminal and provides a second voltage to the low voltage input terminal. During the read phases of the fingerprint sensing device, the power supply circuit provides a third voltage to the high voltage input terminal and provides a fourth voltage to the low voltage input terminal. A first voltage difference is between the first voltage and the second voltage. A second voltage difference is between the third voltage and the fourth voltage. The first voltage difference is greater than the second voltage difference.
    Type: Application
    Filed: January 4, 2017
    Publication date: February 1, 2018
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi YANG, Jui-Che LIN, Tung-An YAO, Chung-Han CHENG, Chung-An TANG