公开(公告)号：US20170115714A1

公开(公告)日：2017-04-27

申请号：US15343144

申请日：2016-11-03

Applicant: Cisco Technology, Inc.

Inventor： Koussalya Balasubramanian ,  Shashi Kumar ,  Sandeep Arvindkumar Patel ,  Anoop Vetteth ,  Frederick R. Schindler

IPC: G06F1/26 ,  H04L12/10 ,  H04L12/40

CPC classification number: G06F1/266 ,  H04L12/10 ,  H04L12/40045

Abstract: A technique is able to direct a power signal from a port power controller to one of multiple physical ports. The technique involves activating a set of port power controllers. Each port power controller is constructed and arranged to deliver power to a device through at most one physical port at a time. The technique further involves performing a set of discovery operations to discover device presence, the set of discovery operations providing discovery data. The technique further involves providing, based on the discovery data provided by the set of discovery operations, a set of switching signals to switching circuitry which is coupled to a set of physical ports. The switching circuitry is constructed and arranged to steer power signals from the activated set of port power controllers through the set of physical ports to deliver power to a set of devices.

公开(公告)号：US09531551B2

公开(公告)日：2016-12-27

申请号：US14469006

申请日：2014-08-26

Applicant: Cisco Technology, Inc.

Inventor： Koussalya Balasubramanian ,  Charles Calvin Byers ,  Matthew A. Laherty

IPC: G06F1/26 ,  H02J4/00 ,  H04L12/10

CPC classification number: H04L12/10 ,  Y02D30/30 ,  Y02D30/32

Abstract: One or more dual-role Power-over-Ethernet (PoE) port units are each selectively configurable to operate as either (i) a PoE Power Source Equipment (PSE) port unit to provide power to a device connected to the PoE port unit, or (ii) a PoE Powered Device (PD) port unit to sink power from the connected device. Each PoE port unit includes a network port, and a bi-directional power converter to selectively convert power in either (i) a first direction and to provide converted power to the network port when the PoE port unit operates as the PSE port unit, or (ii) in a second direction to convert power received from the network port when the PoE port unit operates as the PD port unit.

Abstract translation: 一个或多个双重角色以太网供电（PoE）端口单元每个都可选择性地配置为作为（i）PoE电源设备（PSE）端口单元来操作以向连接到PoE端口单元的设备提供电力， 或（ii）PoE Powered Device（PD）端口单元，以从连接的设备中吸收电力。 每个PoE端口单元包括网络端口和双向功率转换器，用于在（i）第一方向上选择性地转换功率，并且当PoE端口单元作为PSE端口单元操作时，向网络端口提供转换的电力，或 （ii）当PoE端口单元作为PD端口单元操作时，在第二方向上转换从网络端口接收的功率。

公开(公告)号：US20160127135A1

公开(公告)日：2016-05-05

申请号：US14532148

申请日：2014-11-04

Applicant: Cisco Technology, Inc.

Inventor： Koussalya Balasubramanian

IPC: H04L12/10 ,  G06F1/26

CPC classification number: H04L12/10 ,  G01R27/08 ,  G01R31/086 ,  G06F1/266 ,  H04L12/40045 ,  H04L43/50

Abstract: A powered device (PD) receives a Power-over-Ethernet (PoE) voltage to power the PD over a cable from Power Source Equipment (PSE) configured to output a requested one of multiple candidate PoE voltages to the cable. The PD determines a preferred PoE voltage among the multiple candidate PoE voltages that minimizes a total power loss due to (i) the cable, and (ii) a power loss of the PD that would result if the PD were powered through the cable. The PD requests the preferred PoE voltage from the PSE, receives the preferred PoE voltage from the PSE, and operates at the preferred PoE voltage.

Abstract translation: 电力设备（PD）接收电力以太网（PoE）电压，以通过配置为向电缆输出多个候选PoE电压中所请求的一个的电源设备（PSE）通过电缆为PD供电。 PD确定多个候选PoE电压中的优选PoE电压，其使得由于（i）电缆而导致的总功率损耗最小化，以及（ii）如果PD通过电缆供电将导致PD的功率损耗。 PD从PSE请求优选的PoE电压，从PSE接收优选的PoE电压，并以优选的PoE电压工作。

公开(公告)号：US20160064938A1

公开(公告)日：2016-03-03

申请号：US14469006

申请日：2014-08-26

Applicant: Cisco Technology, Inc.

Inventor： Koussalya Balasubramanian ,  Charles Calvin Byers ,  Matthew A. Laherty

IPC: H02J4/00

CPC classification number: H04L12/10 ,  Y02D30/30 ,  Y02D30/32

Abstract: One or more dual-role Power-over-Ethernet (PoE) port units are each selectively configurable to operate as either (i) a PoE Power Source Equipment (PSE) port unit to provide power to a device connected to the PoE port unit, or (ii) a PoE Powered Device (PD) port unit to sink power from the connected device. Each PoE port unit includes a network port, and a bi-directional power converter to selectively convert power in either (i) a first direction and to provide converted power to the network port when the PoE port unit operates as the PSE port unit, or (ii) in a second direction to convert power received from the network port when the PoE port unit operates as the PD port unit.

Abstract translation: 一个或多个双重角色以太网供电（PoE）端口单元每个都可选择性地配置为作为（i）PoE电源设备（PSE）端口单元来操作以向连接到PoE端口单元的设备提供电力， 或（ii）PoE Powered Device（PD）端口单元，以从连接的设备中吸收电力。 每个PoE端口单元包括网络端口和双向功率转换器，用于在（i）第一方向上选择性地转换功率，并且当PoE端口单元作为PSE端口单元操作时，向网络端口提供转换的电力，或 （ii）当PoE端口单元作为PD端口单元操作时，在第二方向上转换从网络端口接收的功率。

公开(公告)号：US20150331821A1

公开(公告)日：2015-11-19

申请号：US14558119

申请日：2014-12-02

Applicant: Cisco Technology, Inc.

Inventor： Rob Liston ,  Koussalya Balasubramanian ,  Naoshad Mehta

IPC: G06F13/38 ,  G06F1/26 ,  G06F13/42

CPC classification number: G06F13/387 ,  G06F1/26 ,  G06F1/266 ,  G06F13/42 ,  G06F13/4282 ,  G06F2213/0042 ,  H04L12/10 ,  H04L69/08 ,  Y02D30/30 ,  Y02D30/32

Abstract: A network device includes Power-over-Ethernet PoE ports to communicate with a communication network and Universal Serial Bus (USB) devices. The network device establishes an Internet Protocol (IP) related connection with an application program, and receives downlink IP packets carrying USB transaction requests destined for the USB device from the application program over the IP connection. The network device converts the received downlink IP packets carrying the USB transaction requests to downlink bus-level USB transactions that are understandable to the USB device. The network device sends the downlink bus-level USB transactions to the USB adaptor device over a PoE connection for forwarding by the USB adaptor device to the USB device.

Abstract translation: 网络设备包括以太网供电PoE端口以与通信网络和通用串行总线（USB）设备进行通信。 网络设备与应用程序建立互联网协议（IP）相关连接，并通过IP连接从应用程序接收携带发往USB设备的USB事务请求的下行IP分组。 网络设备将携带USB事务请求的接收到的下行链路IP分组转换为USB设备可以理解的下行链路总线级USB事务。 网络设备通过PoE连接将下行链路总线级USB事务发送到USB适配器设备，以便由USB适配器设备转发到USB设备。