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1.发明授权Power sourcing equipment having auto-zero circuit for determining and controlling output current 有权具有自动调零电路的电源设备，用于确定和控制输出电流公开(公告)号：US07639469B2
公开(公告)日：2009-12-29
申请号：US11227289
申请日：2005-09-16
IPC分类号： H02H7/00
CPC分类号： H04L12/10 , H04L49/351
摘要： A novel system and methodology for controlling an output of Power Sourcing Equipment in a Power over Ethernet system based on a current limit threshold. The PSE has an auto-zero circuit for comparing a monitored output current of the PSE with the current limit threshold to control the output of the PSE.
摘要翻译： 一种基于电流限制阈值来控制以太网供电系统中的电力采购设备的输出的新型系统和方法。 PSE具有自动调零电路，用于将PSE的监控输出电流与电流限制阈值进行比较，以控制PSE的输出。
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公开(公告)号：US08831211B2
公开(公告)日：2014-09-09
申请号：US10991387
申请日：2004-11-19
摘要： Circuitry and methodology for providing data transmission in a Power over Ethernet (PoE) system having a Power Sourcing Equipment (PSE) for providing power to a PoE link, and a Powered Device (PD) coupled to the PoE link for receiving the power from the PSE. The PSE and PD support data communication with each other in a common mode between two pairs of lines in an Ethernet twisted pair cable.
摘要翻译： 在具有用于向PoE链路供电的供电设备（PSE）的PoE系统中提供数据传输的电路和方法，以及耦合到PoE链路的有源设备（PD），用于从 PSE。 PSE和PD在以太网双绞线电缆中的两条线路之间以共模的方式支持数据通信。
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3.发明授权Distinguishing network interface card from short circuit condition in power over ethernet system 有权区分网络接口卡在以太网供电系统中的短路状态公开(公告)号：US07230412B2
公开(公告)日：2007-06-12
申请号：US11252585
申请日：2005-10-19
CPC分类号： H04L49/351 , H04L12/10
摘要： Novel system and methodology for distinguishing a Network Interface Card (NIC) from a short circuit condition in a Power over Ethernet (PoE) system. A system for providing power to a powered device (PD) includes a PD probing circuit that generates a detection signal supplied to a device being probed and determines a response signal produced in response to the detection signal, and a control circuit that determines a detection value based on the response signal. The control circuit detects a short circuit if the detection value is in a first predetermined range, and detects a NIC if the detection value is in a second predetermined range outside of the first predetermined range.
摘要翻译： 用于在以太网供电（PoE）系统中区分网络接口卡（NIC）与短路情况的新型系统和方法。 用于向被动设备（PD）提供电力的系统包括PD探测电路，其产生提供给被探测的设备的检测信号，并确定响应于检测信号而产生的响应信号;以及控制电路，其确定检测值 基于响应信号。 如果检测值处于第一预定范围，则控制电路检测短路，并且如果检测值处于第一预定范围之外的第二预定范围，则检测NIC。
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4.发明授权Measuring cable resistance in system for providing power over communication cable 有权测量通过电缆提供电力的系统中的电缆电阻公开(公告)号：US08552749B2
公开(公告)日：2013-10-08
申请号：US12527079
申请日：2007-10-23
CPC分类号： H04L12/10
摘要： A system for providing power to a powered device over a communication cable has a cable resistance measuring mechanism that determines values of response signals detected in response to supplying each of at least three reference signals over the communication cable, and determines the resistance of a pair of wires in the cable based on these values. The cable resistance measuring mechanism may be configured for determining resistance of an Ethernet cable that delivers power to the powered device in a Power over Ethernet system.
摘要翻译： 用于通过通信电缆向受电设备提供电力的系统具有电缆电阻测量机构，其确定响应于通过通信电缆提供至少三个参考信号中的每一个而检测到的响应信号的值，并且确定一对 根据这些值，电缆中的导线。 电缆电阻测量机构可以被配置为确定在以太网供电系统中向被动设备供电的以太网电缆的电阻。
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公开(公告)号：US07856561B2
公开(公告)日：2010-12-21
申请号：US11252607
申请日：2005-10-19
IPC分类号： G06F1/00 , G06F15/177 , G01R27/00 , G01R27/02
CPC分类号： H04L12/10
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.
摘要翻译： 用于在以太网供电（PoE）系统中检测有源设备（PD）的新型系统和方法。 PD探测电路产生提供给PD的检测信号，并确定响应于检测信号而产生的PD响应信号。 基于PD响应信号，控制电路确定用于识别PD的检测值。 特别地，如果检测值在第一预定范围内，则PD是符合PoE标准的设备，并且如果检测值处于第二预定范围之外的第二预定范围内，则该结论为PD为传统PD设备 第一预定范围。
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公开(公告)号：US07613936B2
公开(公告)日：2009-11-03
申请号：US11252624
申请日：2005-10-19
IPC分类号： G06F1/00
CPC分类号： H04L49/351 , H02H3/12 , H04L12/10
摘要： Novel circuitry and methodology for detecting a Powered Device (PD) in a system for providing power to the PD. PD detection circuitry detects the PD in a first mode by providing detection current to probe the PD, and in a second mode by providing detection voltage to probe the PD. A control circuit determines that the PD is a valid device if the PD is detected both in the first mode and in the second mode.
摘要翻译： 用于检测用于向PD提供电力的系统中的受电设备（PD）的新型电路和方法。 PD检测电路通过提供检测电流来探测PD而在第一模式中检测PD，并且在第二模式中通过提供检测电压来探测PD。 如果在第一模式和第二模式都检测到PD，则控制电路确定PD是有效装置。
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7.发明授权Combination of high-side and low-side current control in system for providing power over communication link 有权系统中的高侧和低侧电流控制的组合，用于在通信链路上提供电力公开(公告)号：US07702302B1
公开(公告)日：2010-04-20
申请号：US11506779
申请日：2006-08-21
CPC分类号： H04L12/10
摘要： A novel system for supplying power to a powered device over a communication link, such as an Ethernet link, has a current control mechanism that combines low-side current control circuitry with high-side current control circuitry. The low-side current control circuitry is coupled to a low-side power supply line for controlling low-side current flowing in the low-side power supply line. The high-side current control circuitry is coupled to a high-side power supply line for controlling high-side current in the high-side power supply line.
摘要翻译： 通过诸如以太网链路的通信链路向有源设备供电的新型系统具有将低端电流控制电路与高侧电流控制电路组合的电流控制机构。 低侧电流控制电路耦合到低侧电源线，用于控制在低侧电源线中流动的低侧电流。 高侧电流控制电路耦合到用于控制高侧电源线中的高侧电流的高侧电源线。
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