Patents by Inventor Xing-Jun Zhang

Xing-Jun Zhang 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).

  • Method for GSM and CDMA dual-mode mobile phone to control two GSM subscriber identification modules
    Patent number: 8018865
    Abstract: A method for a GSM/CDMA dual-mode mobile phone to control two GSM subscriber identification modules is provided. Without changing hardware of the GSM/CDMA dual-mode mobile phone, the method uses a GSM control module to operate a first GSM subscriber identification module, and a CDMA UART driver module and a SIM/UIM driver module connected with each other are built in a CDMA control module. The CDMA URAT driver module is communicated with a GSM device driver layer of the GSM control module through a UART standard, such that the GSM control module is able to control a second GSM subscriber identification module connected to the SIM/UIM driver module. Thus, the GSM/CDMA dual-mode mobile phone is able to control two GSM subscriber identification modules so as to satisfy needs and demands for businessmen and lovers in personal style.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: September 13, 2011
    Assignee: Inventec Appliances Corp.
    Inventors: Xiao-Long Fan, Xing-Jun Zhang
  • METHOD FOR GSM AND CDMA DUAL-MODE MOBILE PHONE TO CONTROL TWO GSM SUBSCRIBER IDENTIFICATION MODULES
    Publication number: 20080318621
    Abstract: A method for a GSM/CDMA dual-mode mobile phone to control two GSM subscriber identification modules is provided. Without changing hardware of the GSM/CDMA dual-mode mobile phone, the method use a GSM control module to operate a first GSM subscriber identification module, or a CDMA UART driver module and a SIM/UIM driver module connected with each other are built in the CDMA control module. The CDMA URAT driver module is communicated with a GSM device driver layer of the GSM control module through a UART standard, such that the GSM control module is able to control a second GSM subscriber identification module connected to the SIM/UIM driver module. Thus, the GSM/CDMA dual-mode mobile phone is able to control two GSM subscriber identification modules so as to satisfy needs and demands for businessmen and lovers in personal style.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 25, 2008
    Inventors: Xiao-Long Fan, Xing-Jun Zhang