Patents by Inventor Jin-Hua CAO

Jin-Hua CAO 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).

  • Secure digital card
    Patent number: 8649822
    Abstract: The invention provides a secure digital card. In one embodiment, the secure digital card is coupled to a cell phone, and comprises a smart card, a secure digital card controller (SDC), a first power control circuit, and a second power control circuit. When the cell phone wants to perform a near-end payment process, the SDC controls the first power control circuit to supply a first voltage generated by a first power supply pin of a near field communication (NFC) controller to a power receive pin of the smart card. When the cell phone wants to perform a far-end payment process, the SDC controls a second power control circuit to supply a second voltage generated by a second power supply pin of the SDC to the power receive pin of the smart card.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: February 11, 2014
    Assignee: Silicon Motion, Inc.
    Inventors: Bin Chen, Xia Liu, Jin-Hua Cao, Ze-Kang Jin
  • SECURE DIGITAL CARD
    Publication number: 20130203466
    Abstract: The invention provides a secure digital card. In one embodiment, the secure digital card is coupled to a cell phone, and comprises a smart card, a secure digital card controller (SDC), a first power control circuit, and a second power control circuit. When the cell phone wants to perform a near-end payment process, the SDC controls the first power control circuit to supply a first voltage generated by a first power supply pin of a near field communication (NFC) controller to a power receive pin of the smart card. When the cell phone wants to perform a far-end payment process, the SDC controls a second power control circuit to supply a second voltage generated by a second power supply pin of the SDC to the power receive pin of the smart card.
    Type: Application
    Filed: June 27, 2012
    Publication date: August 8, 2013
    Applicant: SILICON MOTION, INC.
    Inventors: Bin CHEN, Xia LIU, Jin-Hua CAO, Ze-Kang JIN