Transponder for a remote identification system

摘要

A transponder used in a remote identification system requiring an interrogator (1) and a transponder (3a, 3b) includes: a transmit/receive antenna (301) for receiving an interrogating signal (1a) and a rewrite signal (1c) emitted from the interrogator (1), and for emitting a response signal (1b) towards the interrogator (1); a modulator/demodulator (302A, 302B) for modulating a signal according to a code inherent in the transponder (3a, 3b) to emit the same from the antenna (301) as the response signal (1b) without newly applying energy to the interrogating signal, and for demodulating the rewrite signal (1c); a controller (303a, 303b) for applying a modulating signal generated according to the inherent code to the modulator/demodulator (302A, 302B), and for storing a signal demodulated by the modulator/demodulator (302A, 302B); and a display (304) for displaying various data according to an instruction of the controller (303a, 303b).