发明名称 |
Detecting legacy powered device in power over ethernet system |
摘要 |
Novel system and methodology for detecting a Powered Device (PD) in a Power over Ethernet (PoE) system. A PD probing circuit generates a detection signal supplied to the PD and determines a PD response signal produced in response to the detection signal. Based on the PD response signal, the control circuit determines a detection value for identifying the PD. In particular, the control circuit concludes that the PD is a device satisfying a PoE standard if the detection value is in a first predetermined range, and concludes that the PD is a legacy PD device if the detection value is in a second predetermined range outside of the first predetermined range.
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申请公布号 |
US7856561(B2) |
申请公布日期 |
2010.12.21 |
申请号 |
US20050252607 |
申请日期 |
2005.10.19 |
申请人 |
LINEAR TECHNOLOGY CORPORATION |
发明人 |
STINEMAN, JR. JOHN ARTHUR;HEATH JEFFREY LYNN |
分类号 |
G06F1/00;G01R27/00;G01R27/02;G06F15/177 |
主分类号 |
G06F1/00 |
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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