发明名称 |
METHOD AND SYSTEM FOR STANDING WAVE DETECTION FOR RADIO FREQUENCY IDENTIFICATION MARKER READERS |
摘要 |
A method and system for determining the absence and presence of items in an RFID interrogation zone. At least one RFID reader transmits interrogation signals in an interrogation zone. Each RFID reader transmits interrogation signals having a forward amount of RF energy and receives response signals from the items in the interrogation zone having a reflected amount of RF energy. A detection circuit determines the presence and absence of items within the interrogation zone based at least in part on the reflected amount of RF energy. |
申请公布号 |
HK1131835(A1) |
申请公布日期 |
2014.02.07 |
申请号 |
HK20090109721 |
申请日期 |
2009.10.21 |
申请人 |
SENSORMATIC ELECTRONICS LLC |
发明人 |
SHAFER GARY MARK |
分类号 |
G06K;G01R |
主分类号 |
G06K |
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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