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: 7309021Abstract: 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: GrantFiled: December 18, 2006Date of Patent: December 18, 2007Assignee: O2Micro International LimitedInventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
-
Publication number: 20070084923Abstract: 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: ApplicationFiled: December 18, 2006Publication date: April 19, 2007Inventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han
-
Integrated PC Card host controller for the detection and operation of a plurality of expansion cards
Patent number: 7191270Abstract: 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: GrantFiled: September 4, 2003Date of Patent: March 13, 2007Assignee: O2Micro International LimitedInventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Patent number: 7150397Abstract: 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: GrantFiled: July 6, 2005Date of Patent: December 19, 2006Assignee: O2Micro International LimitedInventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han
-
Integrated PC Card Host Controller for the Detection and Operation of a Plurality of Expansion Cards
Publication number: 20060265538Abstract: 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: ApplicationFiled: July 11, 2006Publication date: November 23, 2006Applicant: O2MICRO INTERNATIONAL LIMITEDInventors: Hyang-Kyun Oh, Yishao Huang, Richard Brayden -
Integrated PC card host controller for the detection and operation of a plurality of expansion cards
Patent number: 7076589Abstract: 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: GrantFiled: November 28, 2003Date of Patent: July 11, 2006Assignee: O2Micro International LimitedInventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Publication number: 20050242197Abstract: 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: ApplicationFiled: July 6, 2005Publication date: November 3, 2005Inventors: Neil Morrow, Hyang-Kyun Oh (Brian Oh), Ching-Yung Han
-
Patent number: 6913196Abstract: 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: GrantFiled: October 17, 2002Date of Patent: July 5, 2005Assignee: O2Micro International LimitedInventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
-
Publication number: 20040268133Abstract: 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: ApplicationFiled: November 1, 2002Publication date: December 30, 2004Inventors: Patrick S. Lee, Sterling D. Du, Hyang-Kyun Oh, Ching-Yung Han
-
Integrated PC Card host controller for the detection and operation of a plurality of expansion cards
Patent number: 6807597Abstract: 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: GrantFiled: June 17, 2002Date of Patent: October 19, 2004Assignee: 2Micro International LimitedInventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Integrated PC card host controller for the detection and operation of a plurality of expansion cards
Publication number: 20040111240Abstract: 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: ApplicationFiled: November 28, 2003Publication date: June 10, 2004Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Integrated PC Card host controller for the detection and operation of a plurality of expansion cards
Publication number: 20040073736Abstract: 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: ApplicationFiled: September 4, 2003Publication date: April 15, 2004Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Publication number: 20030155420Abstract: 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: ApplicationFiled: October 17, 2002Publication date: August 21, 2003Inventors: Neil Morrow, Hyang-Kyun Oh, Ching-Yung Han
-
Integrated PC card host controller for the detection and operation of a plurality of expansion cards
Patent number: 6470284Abstract: 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: GrantFiled: March 28, 2000Date of Patent: October 22, 2002Assignee: 02 Micro International LimitedInventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden -
Integrated PC Card host controller for the detection and operation of a plurality of expansion cards
Publication number: 20020152047Abstract: 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: ApplicationFiled: June 17, 2002Publication date: October 17, 2002Inventors: Hyang-Kyun Oh, Yishao Max Huang, Richard Brayden