发明名称 |
INTERROGATORS, WIRELESS COMMUNICATION SYSTEMS, METHODS OF OPERATING AN INTERROGATOR, METHODS OF MONITORING MOVEMENT OF A RADIO FREQUENCY IDENTIFICATION DEVICE, METHODS OF MONITORING MOVEMENT OF A REMOTE COMMUNICATION DEVICE AND MOVEMENT MONITORING METHODS |
摘要 |
Interrogators, wireless communication systems, methods of operating an interrogator, methods of monitoring movement of a radio frequency identification device, methods of monitoring movement of a remote communication device and movement monitoring methods are provided. According to one aspect, an interrogator includes communication circuitry configured to output a forward wireless signal to a radio frequency identification device and to receive a return wireless signal from the radio frequency identification device; and a processor coupled with the communication circuitry and configured to process the return wireless signal to monitor movement of the radio frequency identification device. Another aspect provides a method of operating an interrogator including the steps of outputting a forward wireless signal; receiving a return wireless signal from a radio frequency identification device; processing the return wireless signal; and monitoring movement of the radio frequency identification device after the processing.
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申请公布号 |
US6356230(B1) |
申请公布日期 |
2002.03.12 |
申请号 |
US19990378432 |
申请日期 |
1999.08.20 |
申请人 |
MICRON TECHNOLOGY, INC. |
发明人 |
GREEF ROY;OVARD DAVID |
分类号 |
G01S13/536;G01S13/75;G06K7/00;G06K19/07;(IPC1-7):G01S13/42 |
主分类号 |
G01S13/536 |
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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