| 摘要 |
PROBLEM TO BE SOLVED: To surely and simply discriminate whether or not infrared ray communication is attained. SOLUTION: The system is provided with an infrared ray transmission means 3, an infrared ray reception means 4 placed in the vicinity of the infrared ray transmission means 3 and receiving external infrared ray data and infrared ray data from the infrared ray transmission means 3, and a data output means outputting data sent from the infrared ray transmission means 3 and discriminates whether or not the transmission reception of data are accurately conducted depending whether or not the same data as the data outputted from the data output means are received by the infrared ray reception means 4. Since enable/disable communication is directly discriminated by the infrared ray transmission means 3 and the infrared ray reception means 4, reliable discrimination is simply conducted. |
