| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a RFID (Radio Frequency IDentification) communication system and RFID communication method which can be used for radio communication by reducing the occurrences of communication errors even in the case of an RFID with different communication characteristics or the like. <P>SOLUTION: An R/W (RFID communication equipment) 4 provided with a radio communication function for performing radio communication with an RFID 3I (I=A, B, etc.,) includes a Q value adjustment circuit for adjusting a Q value of an antenna and a tuning point, and a tuning point adjustment circuit, or the like. During performing radio communication with the RFID 3I, a control part 23 transmits a signal of a return request, monitors a received state of a return signal returned from the RFID 3I side through a modulating and demodulating part 22 during the transmission, changes the Q value and a communication parameter of the tuning point and repeats a similar operation when the return signal can not be received. <P>COPYRIGHT: (C)2008,JPO&INPIT |
