Apparatus and method for controlling subscriber identity module card
US8554276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Mar 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A Subscriber Identity Module (SIM) card control apparatus applied to a mobile communication device is provided. The mobile communication device has a first SIM card and a second SIM card. The SIM card control apparatus includes a judgment unit, a SIM card controller and a switch device. The judgment unit is used to generate a selection signal according to a to-be-accessed SIM card among the first and the second SIM cards. The SIM card controller transmits signals via a group of signal lines. The switch device is used to selectively connect the group of signal lines to the first SIM card or the second SIM card according to the selection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.