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1. 发明申请

WO1998021691A1 MOVING OBJECT IDENTIFICATION METHOD AND APPARATUS 审中-公开
标题翻译：移动对象识别方法和设备
公开(公告)号：WO1998021691A1
公开(公告)日：1998-05-22
申请号：PCT/JP1997004123
申请日：1997-11-12
申请人： HITACHI, LTD. , ISHIFUJI, Tomoaki , NISHINO, Toshikazu , SAITOH, Takeshi , SHIDA, Masaaki
发明人： HITACHI, LTD.
IPC分类号： G06K17/00
CPC分类号： G06K7/10059 , G06K7/0008
摘要： A method for accurately identifying identification codes of a plurality of non-contact IC cards. On receiving transmission of an interrogation signal (801) from an identification apparatus, an IC card transmits a predetermined number of bits of identification code. The identification apparatus receives the predetermined number of bits transmitted thereto (803), and returns the predetermined number of bits to the IC card (804). The IC card in which the returned bits are equal to the bits transmitted from this IC card transmits a predetermined number of bits following the bits of the previous transmission, and similar processing is repeated. Thus, even when the number of IC cards which simultaneously transmit identification codes is increased, reduction in identification efficiency is prevented.
摘要翻译：一种用于准确识别多个非接触式IC卡的识别码的方法。在从识别装置接收到询问信号（801）的传输时，IC卡发送预定数量的识别码位。识别装置接收发送到其的预定位数（803），并将预定位数返回给IC卡（804）。其中返回的位等于从该IC卡发送的位的IC卡发送先前传输的比特之后的预定数量的比特，并且重复类似的处理。因此，即使当同时发送识别码的IC卡的数量增加时，也可以防止识别效率的降低。

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