DEVICE, METHOD, AND SYSTEM FOR DATA COMMUNICATION

PROBLEM TO BE SOLVED: To provide a data communication device and its method which can change the display size of data including an image or a dynamic picture image so that the display size will match the screen configuration of the image display device of a destination even in one-way communication by electronic mail or the like, and to provide a data communication system including the data communication device. SOLUTION: A display size changing part 115, according to an instruction from a control unit 112, reduces data including an image or a dynamic picture image being inputted from a memory 114 so as to provide a predetermined display size. The display size of the data is automatically extracted from a header item or the like of electronic mail from the destination, and is put together and stored in a table for each destination in a screen configuration storage 113. COPYRIGHT: (C)2005,JPO&NCIPI