发明名称 |
Method and system to backscatter modulate a radio-frequency signal from an RFID tag in accordance with both an oscillation frequency signal and a command signal |
摘要 |
According to one aspect of the present invention, there is provided a method to backscatter modulate a first radio-frequency (RF) signal from a radio-frequency identification (RFID) tag. An oscillator calibration value is retrieved from a non-volatile memory associated with the RFID tag. An oscillation frequency signal is generated within the RFID tag, the generating of the oscillation signal being performed utilizing the oscillator calibration value. A command signal is generated within the RFID tag, the command signal being based on command data received at the RFID tag in a second radio-frequency signal from an RFID reader. The first radio-frequency signal is backscatter modulated in accordance with both the oscillation frequency signal and the command signal.
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申请公布号 |
US2005225433(A1) |
申请公布日期 |
2005.10.13 |
申请号 |
US20040823977 |
申请日期 |
2004.04.13 |
申请人 |
DIORIO CHRISTOPHER J;GUTNIK VADIM;HUMES TODD E |
发明人 |
DIORIO CHRISTOPHER J.;GUTNIK VADIM;HUMES TODD E. |
分类号 |
G06K19/07;H04Q5/22;(IPC1-7):H04Q5/22 |
主分类号 |
G06K19/07 |
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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