Patents by Inventor Hyang-Kyun Oh (Brian Oh)

Hyang-Kyun Oh (Brian Oh) 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).

  • Dual Mode Controller for ISO7816 and USB Enabled Smart Cards
    Publication number: 20070084923
    Abstract: A dual mode smart card controller is provided. In one embodiment, a USB and ISO7816 smart card controller is provided that determines the type of card that is inserted into a slot. If the smart card is a USB smart card, the controller is adapted to pass control of the smart card to an external PC host USB hub circuit. If the smart card is an ISO7816 card, then control is handled by the dual mode controller. In another embodiment, the controller includes an embedded USB hub circuit to permit the controller to directly control both USB and ISO7816 smart cards. Exemplary control sequencing includes monitoring a C4 signal line for a preselected time period, or generating an enable signal if a USB smart card is detected.
    Type: Application
    Filed: December 18, 2006
    Publication date: April 19, 2007
    Inventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han
  • Dual mode controller for ISO7816 and USB enabled smart cards
    Patent number: 7150397
    Abstract: A dual mode smart card controller is provided. In one embodiment, a USB and ISO7816 smart card controller is provided that determines the type of card that is inserted into a slot. If the smart card is a USB smart card, the controller is adapted to pass control of the smart card to an external PC host USB hub circuit. If the smart card is an ISO7816 card, then control is handled by the dual mode controller. In another embodiment, the controller includes an embedded USB hub circuit to permit the controller to directly control both USB and ISO7816 smart cards. Exemplary control sequencing includes monitoring a C4 signal line for a preselected time period, or generating an enable signal if a USB smart card is detected.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: December 19, 2006
    Assignee: O2Micro International Limited
    Inventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han
  • Dual mode controller for ISO7816 and USB enabled smart cards
    Publication number: 20050242197
    Abstract: A dual mode smart card controller is provided. In one embodiment, a USB and ISO7816 smart card controller is provided that determines the type of card that is inserted into a slot. If the smart card is a USB smart card, the controller is adapted to pass control of the smart card to an external PC host USB hub circuit. If the smart card is an ISO7816 card, then control is handled by the dual mode controller. In another embodiment, the controller includes an embedded USB hub circuit to permit the controller to directly control both USB and ISO7816 smart cards. Exemplary control sequencing includes monitoring a C4 signal line for a preselected time period, or generating an enable signal if a USB smart card is detected.
    Type: Application
    Filed: July 6, 2005
    Publication date: November 3, 2005
    Inventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han