Patent ID: 7035629

Claim:
A system comprising: a communication network; a plurality of mobile terminals each connectable to the communication network, each of the mobile terminals having a display device and an input device provided therein; and an external user interface processing device connected to the communication network, wherein the external user interface processing device stores at least one user interface program, wherein each of the mobile terminals comprises a controller for transmitting event information generated by the input device to the external user interface processing device, and receiving a processing result of the event information from the external user interface processing device to control the display device according to the processing result, the event information includes a combination of an operated key code of the input device and a current display image status, the processing result of the event information includes a combination of a displaying command and a next display image status, and the displaying command causes a letter indicated by the operated key code to be displayed in the next display image status on the display device of the mobile terminal.