| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow a strange couple owning the same transmitter/receiver to have an unexpected chance of meeting with each other by measuring the dis tance to another transmitter/receiver, and executing plural operations according to the distance when a signal received from the other transmitter/receiver matches prescribed conditions. SOLUTION: An ID number is preliminarily stored in a ROM 4 which stores information necessary for the operation of a transmitter/receiver 1. In the transmitter/receiver 1, the situation of a signal received by a receiving circuit 6 is confirmed, and when it is judged that a signal is received from the same kind of transmitter/receiver 1, a comparing processing with the ID number stored in the ROM 4 is operated, and when it is judged that both ID numbers match with each other, the distance between the both devices is measured, and this measured value is stored in a RAM 3. Then, when the distance between the both devices is, for example, less than 1m according to the measured distance, a light emitting device 12 starts emission of light, and when the distance is reduced to, for example, less than 50cm, a sound device 11 starts a voice output in addition to light emission.</p> |
