Method for accessing multiple card slots and apparatus for the same
US8443120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/3804
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for accessing multiple card slots and an apparatus for the same, which relate to data communication field. The method comprises establishing a connection from a CCID to a host, declaring at least a pair of IN/OUT endpoints used for implementing a response pipe and a command pipe as BULK-IN and BULK-OUT endpoints, declaring at least one IN endpoint used for implementing an event notification pipe as an interrupt endpoint, and declaring, by the CCID, the CCID itself as a device compliant with a CCID standard and the number of card slots supported by the CCID to the host; accessing the CCID by the host; receiving, by the CCID, a BULK-OUT packet and determining, by the CCID, a type of a CCID command issued by the host according to the BULK-OUT packet; in case the CCID command is a channel extension command, determining if it is a channel switch command; and if so, parsing the channel switch command and activating a card slot the host tries to access.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.