发明名称 |
PASSIVE RFID READER AND OPERATION CONTROL METHOD THEREFOR |
摘要 |
Provided is a Radio Frequency Identification (RFID) reader that can minimize collision among RFID readers in an environment where there are a plurality of RFID readers within a limited operating environment by making each RFID reader select a channel at different delay time based on a random value, and a method for controlling operation of the RFID reader. The RFID reader includes a random value generating unit; a reader control unit for adaptively deciding a counter value for generating the random value; an anti-collision unit for preventing collision among a plurality of tags; a reader transmitting unit for generating a reader command message determined by the anti-collision unit, encoding the reader command message, and modulating the reader command message; a reader receiving unit for demodulating and decoding a tag signal; and a channel operation control unit for selecting a channel to be used for the communication with the tag.
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申请公布号 |
US2008122581(A1) |
申请公布日期 |
2008.05.29 |
申请号 |
US20070746306 |
申请日期 |
2007.05.09 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
BAE JI-HOON;MO HEE-SOOK;LEE DONG-HAN;QUAN CHENG-HAO;PARK CHAN-WON;CHOI GIL-YOUNG;PYO CHEOL-SIG;CHAE JONG-SUK |
分类号 |
H04Q5/22 |
主分类号 |
H04Q5/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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