| 摘要 |
Frame data (letters, images, still images, motion picture images, etc.) displayed on the display unit in a transmitting side portable telephone set 1 are transmitted via a radio terminal interface (such as Bluetooth) to other receiving side portable telephone set 2 to n, and displayed in the display units therein. Thus, the data displayed on the display unit in any given portable telephone set can be displayed and read out with a plurality of other portable telephone sets, so that they can be have substantially as common data.
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