| 摘要 |
<p>PURPOSE:To discriminate a constitution member or not from a remote place without necessitating any special operation by only going into a management area, and also, while executing a time limit management by constituting the system of a resonance part, a timer part and a switch part. CONSTITUTION:The system is constituted of a resonance part 11 for resonating with a high frequency signal from the outside and outputting a resonance signal, a timer part 12 for setting a start time and an end time of the term of validity and outputting a time limit signal in its term of validity, and a switch part 13 for turning on and off a circuit of the resonance part 11. In this case, the resonance part 11, the timer part 12 and the switch part 13 can be mounted to a card-shaped carrier. In such a way, an identifier is resonated by a high frequency transmitted from a sensing part, therefore, a possessed state of a card can be discriminated from a remote plate. Also, since the time limit can be set by the timer part, the time limit management can be executed by the identifier.</p> |
