Patent application number | Description | Published |
20080252307 | Techniques for measuring network channel resistive loss between a power-sourcing apparatus and a powered device - A method and apparatus are provided for determining resistive power loss through a channel between Power Sourcing Equipment (PSE) and a Powered Device (PD). The method includes (1) receiving indication that a PSE signal measurement is available from the PSE or a PD signal measurement is available from the PD, (2) selecting, as an input parameter to a processing operation, at least one of the PSE signal measurement or the PD signal measurement, (3) performing the processing operation to calculate a resistance value indicative of the resistive power loss through the channel between the PSE and PD based on the input parameter, and (4) outputting the resistive power loss value as a result of carrying out the processing operation. | 10-16-2008 |
20080256372 | Inline Power Controller - An inline power controller includes at least one analog interface circuit module (AICM) having a first analog input node for receiving an inline power port voltage, a second analog input node for receiving an inline power port current, a first analog output for effecting an inline power port voltage, a second analog output for effecting an inline power port current, and a digital interface converting the received inline power port voltage to a digital value, the inline power port current to a digital value, a first digital value to the first analog output and a second digital value to the second analog output. A digital serial bus (DSB) couples the AICM to a digital controller via digital serial bus interfaces (DSBIs). | 10-16-2008 |
20090121548 | DYNAMIC CURRENT LIMITS - A method is provided for allocating and providing power to network devices. The method includes (i) receiving an electronic request to power a network device with a requested amount of power, (ii) establishing a worst-case current draw of the device in the event of a pre-defined maximum voltage slew rate, and (iii) selectively (a) allocating and providing power to the device when a remaining power capacity is greater than or equal to a provision voltage multiplied by the worst-case current draw of the device in the event of the maximum voltage slew rate, and (b) denying power to the device when the remaining power capacity is less than the provision voltage multiplied by the worst-case current draw of the device in the event of the maximum voltage slew rate. Apparatus are also provided for performing the method. | 05-14-2009 |
20090172421 | FACILITATING COMMUNICATION AND POWER TRANSFER BETWEEN ELECTRICALLY-ISOLATED POWERED DEVICE SUBSYSTEMS - A system employing power over Ethernet (PoE) technology may include at least one powered device and power sourcing equipment (PSE). The powered device may include a first powered device (PD) subsystem and a second powered device (PD) subsystem that is electrically isolated from the first PD subsystem. The powered device may also include an interface connecting the first PD subsystem and the second PD subsystem. The PSE may be operable to provide power to one or more of the PD subsystems through a link connecting the PSE to the powered device. Also, the first PD subsystem may be operable to receive a communication from and transfer power to the second PD subsystem through the interface while maintaining the electrical isolation. | 07-02-2009 |
20100023784 | Power Delivery Over Ethernet Cables - A method for power delivery comprises coupling an Ethernet cable comprising four wire pairs to a power delivery system and providing power to a powered device on all of the wire pairs. A power delivery system includes an interface operable to couple to an Ethernet cable comprising four wire pairs and a controller operable to provide power to a powered device on all of the wire pairs. | 01-28-2010 |
20100037093 | REDUNDANT POWER AND DATA OVER A WIRED DATA TELECOMMUNICATIONS NETWORK - A method and apparatus for redundant power and data over a wired data telecommunications network permits power to be received at a local powered device (PD) from remote power sourcing equipment (PSE) via at least one conductor at a first time and power and/or data to be obtained by the local device from another port of the remote device or another remote device at a second different time. Power levels obtained may be adjusted from time to time in response to circumstances. | 02-11-2010 |
20100042853 | METHODS AND APPARATUS FOR PROVISIONING PHANTOM POWER TO REMOTE DEVICES - An apparatus provisions power from a power budget to remote devices configured to obtain phantom power. The apparatus includes, among other things, a controller which is configured to identify a power demand for a remote device (e.g., a power demand based on an actual cable loss), and generate a comparison between the power demand for the remote device and the power budget of the apparatus. The controller is further configured to allocate power from the power budget provided by the power supply to the remote device when the comparison indicates that the power budget supports the power demand for the remote device, and reject allocation of power from the power budget to the remote device when the comparison indicates that the power budget does not support the power demand for the remote device. | 02-18-2010 |
20100325449 | BIDIRECTIONAL INLINE POWER PORT - A method and apparatus for bidirectional provision of inline power over data telecommunications cabling permits power to be received at a local powered device (PD) from remote power sourcing equipment (PSE) via at least one conductor at a first time and power to be provided by the local device to a remote device or another device at a second different time. | 12-23-2010 |
20110022860 | TECHNIQUES FOR MEASURING NETWORK CHANNEL RESISTIVE LOSS BETWEEN A POWER-SOURCING APPARATUS AND A POWERED DEVICE - A method and apparatus are provided for determining resistive power loss through a channel between Power Sourcing Equipment (PSE) and a Powered Device (PD). The method includes ( | 01-27-2011 |
20110161693 | INLINE POWER CONTROLLER - An inline power controller includes at least one analog interface circuit module (AICM) having a first analog input node for receiving an inline power port voltage, a second analog input node for receiving an inline power port current, a first analog output for effecting an inline power port voltage, a second analog output for effecting an inline power port current, and a digital interface converting the received inline power port voltage to a digital value, the inline power port current to a digital value, a first digital value to the first analog output and a second digital value to the second analog output. A digital serial bus (DSB) couples the AICM to a digital controller via digital serial bus interfaces (DSBIs). | 06-30-2011 |
20120120306 | TECHNIQUES FOR NETWORK-CENTRIC SCHEDULED POWER PROVISIONING - A method is performed in a power sourcing device (PSD). The method includes, for each of a plurality of powered devices (PDs) configured to time-varyingly draw power from the PSD, (a) receiving a set of power requirements for that PD, (b) assigning a set of amounts of power to be allocated to that PD, each assigned amount respectively indicating an assigned power allocation to that PD at a different time slot, and (c) during each time slot, providing an amount of power to that PD in accordance with the assigned amount. The set of power requirements includes (1) a plurality of different amounts of power to be drawn by the PD, each different amount of power being associated with an operational mode in which the PD can operate and (2) a policy indicating which operational mode the PD should operate in at different times. | 05-17-2012 |
20120137144 | FACILITATING COMMUNICATION AND POWER TRANSFER BETWEEN ELECTRICALLY-ISOLATED POWERED DEVICE SUBSYSTEMS - A system employing power over Ethernet (PoE) technology may include at least one powered device and power sourcing equipment (PSE). The powered device may include a first powered device (PD) subsystem and a second powered device (PD) subsystem that is electrically isolated from the first PD subsystem. The powered device may also include an interface connecting the first PD subsystem and the second PD subsystem. The PSE may be operable to provide power to one or more of the PD subsystems through a link connecting the PSE to the powered device. Also, the first PD subsystem may be operable to receive a communication from and transfer power to the second PD subsystem through the interface while maintaining the electrical isolation. | 05-31-2012 |
20120239945 | DIRECTING A POWER SIGNAL FROM A PORT POWER CONTROLLER TO ONE OF MULTIPLE PHYSICAL PORTS - 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. | 09-20-2012 |
20130031378 | Power Transfer in an Inline Switch Device - An apparatus and method for transferring power in an inline switch device are provided. The method comprises drawing power from an inline power source and transferring, by the powered device subsystem, a portion of the power that is not consumed by the powered device subsystem to one or more connected powered devices. The method further comprises determining a limit of current drawn by the powered device subsystem during transfer of power by the powered device subsystem to the one or more powered devices that results in the transfer of a desired amount of power to the one or more powered devices, and adjusting the limit for the current drawn by the powered device subsystem to the determined current limit. | 01-31-2013 |
20130262887 | BIDIRECTIONAL INLINE POWER PORT - A method and apparatus for bidirectional provision of inline power over data telecommunications cabling permits power to be received at a local powered device (PD) from remote power sourcing equipment (PSE) via at least one conductor at a first time and power to be provided by the local device to a remote device or another device at a second different time. | 10-03-2013 |
20130297955 | DIRECTING A POWER SIGNAL FROM A PORT POWER CONTROLLER TO ONE OF MULTIPLE PHYSICAL PORTS - 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. | 11-07-2013 |