发明授权
US5930304A Wireless powered communication device with adaptive data detection and
method
失效
具有自适应数据检测和方法的无线通信设备
- 专利标题: Wireless powered communication device with adaptive data detection and method
- 专利标题(中): 具有自适应数据检测和方法的无线通信设备
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申请号: US822399申请日: 1997-03-20
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公开(公告)号: US5930304A公开(公告)日: 1999-07-27
- 发明人: Neal W. Hollenbeck , Kenneth A. Paitl , Donald B. Lemersal, Jr.
- 申请人: Neal W. Hollenbeck , Kenneth A. Paitl , Donald B. Lemersal, Jr.
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: G06K13/077
- IPC分类号: G06K13/077 ; H04L25/06 ; H04L27/06 ; H04L27/00
摘要:
The present invention expands the range over which a wireless powered communication device (500) and device reader (12) can communicate. In the present invention, circuitry (502) within the device (500) provides for determining a characteristic of the received communication signal. Based upon this signal characteristic data recovery parameters are adapted to enhance data recovery over a maximize communication distance. In a preferred embodiment of the present invention, the magnitude of the power signal is observed. It is known that the power signal varies as an inverse square of the distance of the device (500) to the reader. From this information, a data detection threshold is adjusted to enhance data recovery.
公开/授权文献
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