DEVICE FOR TRANSMITTING DATA OF MOBILE COMMUNICATION TERMINAL AND METHOD THEREFOR

摘要

PURPOSE: A device for transmitting data of a mobile communication terminal is provided to operate in a general data transmission mode for transmitting general data and in an upgrade data transmission mode for transmitting mobile communication upgrading data, thereby performing both general data and upgrading data transmissions of the mobile communication terminal. CONSTITUTION: A serial port(200) of a mobile communication terminal and a serial port(250) of a personal computer are physically connected in socket or plug type. The serial ports(200,250) support serial transmissions to peripheral devices one bit by one bit at a time. A level shift device(230) adjusts voltages of the personal computer and the mobile communication terminal during communication. A switch(240) of the level shift device(230) is operated by a user while performing data communication between the mobile communication terminal and the personal computer or while downloading an upgrade program of the mobile communication terminal. The user selects signals lines(221-225) of the mobile communication terminal or signal lines(231,232) by operating the switch(240).