| 摘要 |
PROBLEM TO BE SOLVED: To provide a data carrier system which checks destinations in order against plural responders so as to make communication, whose processing time is short and which has extendibility without expecting the memory capacity of a responser. SOLUTION: The responser 1 transmits recognition commands 14 to the responders 2a-2d. The responser 1 receives signals from the responders 2a-2d and judges whether plural responders 2a-2d which can operate exist or not. When the responser 1 judges that the plural responders 2a-2d exist, the responser 1 transmits a starting request 15 to the responders 2a-2d. When the responders 2a-2d receive the starting request 15 from the responser 1, the response is returned to the responser 1 at random time and the responser 1 receives data transmitted from the responders 2a-2d. |
