MOVING OBJECT IDENTIFICATION METHOD AND APPARATUS

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.