READER, TAG, RADIO FREQUENCY IDENTIFICATION SYSTEM AND METHOD FOR IDENTIFYING TAG IN RADIO FREQUENCY IDENTIFICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a reader, tags, a radio frequency identification (RFID) system and a method of simultaneously identifying a plurality of tags having colliding reply signals and reducing the reading time.;SOLUTION: The reader 100 concerning this invention is the reader 100 of the radio frequency identification (RFID) system including two or more tags 200, 201 assigned unique IDs. The reader 100 also includes: a storage 110 which stores a comparison code for identifying ID codes generated based on respective unique IDs by the tags 200, 201; a transmitter 120 which generates a query signal to inquire into the presence of the tags and transmits the signal to the tags; and a comparison part 130 which compares a comparison code with the identification code stored in the storage 110 and identifies responding tags after receiving the ID codes from the tags 200, 201.;COPYRIGHT: (C)2007,JPO&INPIT