| 摘要 |
PROBLEM TO BE SOLVED: To provide an authentication ID reception system of a portable apparatus, capable of accurately acquiring authentication ID from a plurality of portable apparatuses without causing reduction in versatility.SOLUTION: An authentication ID reception system of a portable apparatus comprises a portable apparatus 2 for outputting an authentication ID for authenticating locking-unlocking authority to an electric lock device 1 and a passive transmitter-receiver 3 for transmitting a response request signal communicable between one group of portable apparatuses 2. The portable apparatus 2 can shift between a responsible state of transmitting a response signal to reception of the response request signal from the passing transmitter-receiver 3 and an unresponsible state of not sending back the response signal to the response request signal. The passive transmitter-receiver 3 acquires the authentication ID in the response signal by receiving only the response signal with the strongest reception strength from the portable apparatus 2 after outputting the response request signals at a predetermined interval, and outputs a transition signal to the unresponsible state to the portable apparatus 2 from which the response signal has been received, to cause the portable apparatus 2 to stop the response signal output for a predetermined period of time. |
