Smart card virtual hub
US6978335B2 · kind B2 · utility
10Cited by
31References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0042
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.