| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the cost of a RFID tag and a RFID system from being increased even when a user is enabled to confirm a reading article with eyes. <P>SOLUTION: The RFID tag 3 is provided with a tag IC chip 6 storing tag information, a tag antenna part 7 electrically connected to the tag IC chip 6 to receive a radio signal outputted from a reader/writer 5 and generate power by the received radio signal, a photoelectric conversion part 20 electrically connected to the tag IC chip 6 to generate power by received light, a received light quantity detecting part 30 for detecting an output corresponding to received light quantity of the photoelectric conversion part 20, and a control part 24 for performing control so as to return a response signal to the reader/writer 5 through the tag antenna part 7 when the output of the photoelectric conversion part 20 detected by the received light quantity detecting part 30 is equal to or more than a predetermined value. <P>COPYRIGHT: (C)2010,JPO&INPIT |
