The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2013
Filed:
May. 26, 2009
Chih-yung Lin, Hsinchu Hsien, TW;
Cheng-yuan Lo, Hsinchu Hsien, TW;
Yi-wei Wang, Hsinchu Hsien, TW;
Jui-hsiang Chang, Hsinchu Hsien, TW;
Chih-Yung Lin, Hsinchu Hsien, TW;
Cheng-Yuan Lo, Hsinchu Hsien, TW;
Yi-Wei Wang, Hsinchu Hsien, TW;
Jui-Hsiang Chang, Hsinchu Hsien, TW;
MStar Semiconductor, Inc., Hsinchu Hsien, TW;
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.