RADIO TAG COMMUNICATION DEVICE, RADIO TAG COMMUNICATION SYSTEM, AND RADIO TAG DETECTION SYSTEM

摘要

A radio-frequency tag communication device permitting a radio-frequency tag communication system to have a sufficiently large area of communication, with a minimum required number of interrogators. The radio-frequency tag communication device 12 includes a transmission control portion 40 operable to control transmission of a transmitted signal, so as to prevent overlapping an area of communication of the radio-frequency tag communication device 12 and an area of communication of another radio-frequency tag communication device 12, making it possible to maximize a spacing distance between the adjacent radio-frequency tag communication devices 12, and to effectively prevent concurrent receptions of the transmitted signals by the plurality of radio-frequency tags 14. Namely, the radio-frequency tag communication device 12 permits the radio-frequency tag communication system to have a sufficiently large area of communication with a minimum required number of interrogators.