| 摘要 |
In a writing device 3, a controller 34 controls an authentication communication unit 32 so as to transmit authentication data to a display device 2, prior to writing main data into the display device 2, in order to specify the display device 2 into which the main data is to be written. After carrying out the authentication, the controller 34 controls a main communication unit 31 so as to transmit the main data stored in a memory 30 to the display device 2 into which the main data is to be written, by wireless communication. In the display device 2, a controller 25 controls an authentication communication unit 21 so as to receive the authentication data from the writing device 3. The controller 25 controls a main communication unit 20 so as to receive the main data from the writing device 3 by wireless communication after the completion of the authentication. Therefore, when the main data is written into the display device 2 from the writing device 3, it is possible to avoid wiring problems, and provide the display device 2 with an improved appearance.
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