| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an identification method that has a form in which a calling unit transmits at least two different types of markers, i.e., a 1st type of a marker deciding the start of a time slot in a sequence and a 2nd type of a marker making a card be in a prescribed state after a calling message and they are received and interpreted by the card. SOLUTION: This improvement is about a process for identifying an electronic card existing in an identification area, a card responds to a calling message (CALL) transmitted by a calling unit by transmitting a response message (R0) determined by a specific time slot (W0) in the sequence of time slots, the calling unit transmits at least two different types of markers (M1 and M2) after the calling message (CALL), they are received and interpreted by the card, the 1st type of a marker (M1) decides the start of a time slot in the sequence and the 2nd type of a marker (M2) makes the card be in a prescribed state. It is possible to interrupt the card identification procedures before the sequence is finished by this method.</p> |
