Patents by Inventor Hyang-Kyun Oh

Hyang-Kyun 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).

  • Patent number: 7309021
    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: December 18, 2006
    Date of Patent: December 18, 2007
    Assignee: O2Micro International Limited
    Inventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
  • 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
  • Patent number: 7191270
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: March 13, 2007
    Assignee: O2Micro International Limited
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • 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
  • Publication number: 20060265538
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Application
    Filed: July 11, 2006
    Publication date: November 23, 2006
    Applicant: O2MICRO INTERNATIONAL LIMITED
    Inventors: Hyang-Kyun Oh, Yishao Huang, Richard Brayden
  • Patent number: 7076589
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: July 11, 2006
    Assignee: O2Micro International Limited
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • 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
  • Patent number: 6913196
    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: October 17, 2002
    Date of Patent: July 5, 2005
    Assignee: O2Micro International Limited
    Inventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
  • Publication number: 20040268133
    Abstract: A secure personal identification entry system provides an integrated approach to secure identification data entry. A controller resides in a secure PIN smart card keyboard that also contains a numeric keypad and a smart card reader and allows the numeric keypad to server two purposes: the first as a normal keypad in a keyboard and the second as a secure PIN entry keypad. The user inserts his smart card, with his PIN number information stored in the smart card's memory, into the smart card reader. An application program running on a PC that requires secure identification from the user requests that the user enter his PIN number using the keypad on the keyboard. The controller receives the PIN request and switches the keypad from normal mode to PIN entry mode. The keypad is switched to be dedicated to PIN entry and communicates with the controller. The user enters his PIN number into the keypad. The controller receives the PIN number and forwards the PIN number to the smart card.
    Type: Application
    Filed: November 1, 2002
    Publication date: December 30, 2004
    Inventors: Patrick S. Lee, Sterling D. Du, Hyang-Kyun Oh, Ching-Yung Han
  • Patent number: 6807597
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: October 19, 2004
    Assignee: 2Micro International Limited
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • Publication number: 20040111240
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Application
    Filed: November 28, 2003
    Publication date: June 10, 2004
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • Publication number: 20040073736
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Application
    Filed: September 4, 2003
    Publication date: April 15, 2004
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • Publication number: 20030155420
    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: October 17, 2002
    Publication date: August 21, 2003
    Inventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
  • Patent number: 6470284
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: October 22, 2002
    Assignee: 02 Micro International Limited
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden
  • Publication number: 20020152047
    Abstract: An integrated controller for the detection and operation of both PC Cards, smart cards and passive smart card adapter cards. In one aspect, the invention detects the presence of standard expansion cards or passive smart card adapters by utilizing the reserved detection and voltage selection signal area defined by the PC Card specification. In another aspect, the invention provides an integrated controller that includes logic to operate either a standard expansion card or a passive smart card adapter by reassigning certain PC Card signal lines to operate a standard expansion card or a passive smart card adapter, thereby eliminating the need to provide pins in addition to those defined by the PC Card specification.
    Type: Application
    Filed: June 17, 2002
    Publication date: October 17, 2002
    Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden