发明名称 |
METHOD OF DISCRIMINATION OF A DEVICE AS POWERABLE THROUGH A LAN LINE AND DEVICE FOR ESTIMATING ELECTRIC PARAMETERS OF A LAN LINE |
摘要 |
PDs that can be supplied through the LAN line are discriminated from PDs that cannot be so supplied as a function of the resistance of the supply line and of the voltage drop caused by nonlinear elements in series therewith. The values of these two parameters are estimated by applying two distinct voltages to the supply terminals of the LAN line and sensing the relative steady-state currents absorbed by the power supply line, and by processing voltage and current values for estimating the resistance of the line and the voltage drop caused by nonlinear elements connected in series therewith.
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申请公布号 |
US2010141279(A1) |
申请公布日期 |
2010.06.10 |
申请号 |
US20090614211 |
申请日期 |
2009.11.06 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
TORAZZINA ALDO;RUSSO RICCARDO |
分类号 |
G01R27/08 |
主分类号 |
G01R27/08 |
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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