Patents by Inventor CHENG-YUAN LO

CHENG-YUAN LO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and method for controlling subscriber identity module card
    Patent number: 8554276
    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.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: October 8, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Chih-Yung Lin, Cheng-Yuan Lo, Yi-Wei Wang, Jui-Hsiang Chang
  • Apparatus and Method for Controlling Subscriber Identity Module Card
    Publication number: 20100105433
    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.
    Type: Application
    Filed: May 26, 2009
    Publication date: April 29, 2010
    Applicant: MSTAR SEMICONDUCTOR, INC.
    Inventors: CHIH-YUNG LIN, CHENG-YUAN LO, YI-WEI WANG, JUI-HSIANG CHANG