Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus interface architecture
Reexamination Certificate
2005-12-20
2005-12-20
Perveen, Rehana (Department: 2112)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus interface architecture
C710S306000, C710S313000, C713S600000, C725S006000
Reexamination Certificate
active
06978335
ABSTRACT:
A smart card virtual hub combines a ISO7816 compliant smart card reader interface with a USB hub that provides one or more attachment points for connection of devices to the USB bus, thereby interfacing such devices to the host computer. The hub in the presently preferred embodiment of the invention provides one port to which one USB functional device, such as a keyboard, may be attached. The attached keyboard shares a common USB bus bandwidth with the internal embedded smart card reader through a host-scheduled, token-based communication protocol that is handled by the USB driver and the device driver.
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Operating System Enhancements, Chapter 5, Windows XP Professional Security.
02Micro International Limited
Grossman Tucker Perreault & Pfleger PLLC
Huynh Kim T.
Perveen Rehana
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