公开(公告)号：US20100262850A1

公开(公告)日：2010-10-14

申请号：US12562143

申请日：2009-09-18

申请人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

发明人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

IPC分类号： G06F1/32 ,  H04L12/26

CPC分类号： H04L43/0817

摘要： A power budget controller for an Ethernet device is disclosed. The Ethernet device is connected with another Ethernet device through a cable. The power budget controller includes a length estimation unit, a power selection unit and a link monitoring unit. The length estimation unit is utilized for generating a detection signal to the cable and for estimating length of the cable according to a refection waveform of the detection signal. The power selection unit is coupled to the length estimation unit, and utilized for adjusting a transmission power of the Ethernet device according to an estimation result of the cable length. The link monitoring unit is coupled to the power selection unit, and utilized for monitoring a link status of the Ethernet device to determine whether the transmission power is selected correctly.

摘要翻译： 公开了一种用于以太网设备的功率预算控制器。 以太网设备通过电缆与另一个以太网设备连接。 功率预算控制器包括长度估计单元，功率选择单元和链路监视单元。 长度估计单元用于根据检测信号的反射波形产生对电缆的检测信号和估计电缆的长度。 功率选择单元耦合到长度估计单元，用于根据电缆长度的估计结果调整以太网设备的发送功率。 链路监视单元耦合到功率选择单元，用于监视以太网设备的链路状态，以确定发送功率是否被正确选择。

公开(公告)号：US20100259244A1

公开(公告)日：2010-10-14

申请号：US12501485

申请日：2009-07-12

申请人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

发明人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

IPC分类号： G01B7/02

CPC分类号： H04L43/50

摘要： A method for estimating cable length includes steps of generating a detection signal to a cable, wherein the detection signal includes a first pulse and a second pulse with opposite voltages in sequence; receiving a refection signal of the detection signal from the cable; and determining length of the cable according to a superposed waveform of the detection signal and the refection signal.

摘要翻译： 一种用于估计电缆长度的方法包括产生对电缆的检测信号的步骤，其中检测信号包括依次具有相反电压的第一脉冲和第二脉冲; 从电缆接收检测信号的反射信号; 以及根据检测信号和反射信号的叠加波形来确定电缆的长度。

公开(公告)号：US08228074B2

公开(公告)日：2012-07-24

申请号：US12501485

申请日：2009-07-12

申请人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

发明人： Guan-Henry Lin ,  Tsung-Hsuan Wu ,  Wen-Sheng Hou

IPC分类号： G01R27/04

CPC分类号： H04L43/50

摘要： A method for estimating cable length includes steps of generating a detection signal to a cable, wherein the detection signal includes a first pulse and a second pulse with opposite voltages in sequence; receiving a refection signal of the detection signal from the cable; and determining length of the cable according to a superposed waveform of the detection signal and the refection signal.

摘要翻译： 一种用于估计电缆长度的方法包括产生对电缆的检测信号的步骤，其中检测信号包括依次具有相反电压的第一脉冲和第二脉冲; 从电缆接收检测信号的反射信号; 以及根据检测信号和反射信号的叠加波形来确定电缆的长度。