Abstract: A lighting device (100), comprising a light source (104) configured to be driven by electrical power, an energy-storage unit (106) configured to store electrical energy, to receive the electrical power from a power interface and to deliver the electrical power to the light source and to the power interface (108) allowing, in a connected state, an energy-transfer operation between the energy-storage unit (106) and an external second energy-storage unit (110) of an external electrically driven device (102) that can be connected to the power interface (108) and a control unit (116) configured to determine if the power interface (108) is in the connected state, to determine a current light-output state of the lighting device (100), and to control, in the connected state, the energy-transfer operation in an energy-transfer direction depending on the current light-output state of the lighting device (100).

Abstract: The present invention relates to Power-over-Ethernet (PoE) systems. The invention proposes to use a classification event to communicate from the PD (121) to the PSE (110, 910). A sensor (310, 410, 510a, 510b) may determine a sensor value, shut down the PoE connection, and reconnect so that the power up cycle with the PSE (110, 910) will start. The sensor (310, 410, 510a, 510b) provides a PoE resistance related to a class 0, 3 where the class relates to the sensor value (e.g., class 0=presence detected; class 1=no presence detected). This procedure may be repeated (e.g. continuously, every minute or whenever the sensor value changes such that the PSE (110, 910) needs to be informed) and if needed multiple cycles can be used to increase the length of the message communicated.

Abstract: The present invention relates to a data processing device (10?) for a power over Ethernet system (100). The data processing device (10?) comprises a data communicating unit (12) and a data processing unit (14). The data communicating unit (12) is configured for establishing a first connection (30) to a power sourcing equipment (24) and a second connection (32) to a powered device (26) and for intercepting central data transmitted from the power sourcing equipment (24) to the powered device (26). The data processing unit (14) is configured to process the intercepted central data in dependence of local data received from a local powered device (16). The local data comprises user input data, sensing data, or user input data and sensing data. The data communicating unit (12) is furthermore configured for transmitting the processed data to the powered device (26). Hence local data can influence central data for improving local control.

Abstract: The present invention relates to a functional device (10A) with improved power conversion efficiency. The functional device (10A) comprises a functional unit (12), two or more energy storage units (14A, 14B, 14C, 14D), and an electric power converter unit (16). The electric power converter unit (16) is configured to receive an input voltage from an external power source (20) and to provide converted input voltage to a charging set (28A) of the energy storage units (14C, 14D) which are connected in series with each other having a charging set voltage adapted to the input voltage received from the external power source (20). A discharging set (32A) of the energy storage units (14A, 14B) is configured to provide an output voltage adapted to a functional unit input voltage required by the functional unit (12) to the functional unit (12). This allows an improved power conversion efficiency.

Abstract: A power-input stage (102) for a DC-powered device (100), the power-input stage including at least four pairs of power-input elements (104) for connecting to four pairs of external electrical conductors (106) for delivering DC power, and a powering-mode assessment unit (108) having a balance measurement stage (110) that is configured to perform a balance measurement for determining whether or not a first number of pairs of power-input elements, at which a positive power-supply voltage is available from the external electrical conductors, is equal to a second number of pairs of power-input elements, from which a negative power-supply voltage is available, and to provide a balance output signal indicative of a result of the balance measurement.

Abstract: A method of detecting atmospheric conditions in an area via a plurality of devices, each arranged for transmitting, receiving, and/or processing radio frequency signals in a predetermined frequency band; wherein the radio frequency signals can be affected by atmospheric conditions; wherein the method comprises the steps of: transmitting, by a first device of the plurality of devices, a first radio frequency signal intended for receipt by a second device of the plurality of devices in order to perform a network communications function between the first and the second device during a time period; receiving, by the second device, the transmitted first radio frequency signal; and processing, by the second device, the received first radio frequency signal in order to perform the network communications function; wherein the method further comprises the steps of: selecting a third device, of the plurality of devices, based on a physical location of the third device relative to the area in which the atmospheric condi

Abstract: A retrofit Light Emitting Diode, LED, lighting device for connection to an electronic ballast, wherein said retrofit LED lighting device comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage or an AC supply current, from said electronic ballast and for driving said LED array based on said received AC supply voltage or said AC supply current, at least one switch, wherein in a closed position of said at least one switch, said retrofit LED lighting device provides a closed loop current circuit for an electronic ballast connected to said retrofit LED lighting device and in an open position of said at least one switch, said retrofit LED lighting device provides an open loop current circuit for an electronic ballast connected to said retrofit LED lighting device thereby simulating an absence of said LED lighting device to said electronic ballast, an auxiliary power supply and a stand-alone external trigger circuit, connected to said auxiliary

Abstract: A system comprises a battery, a load and a power converter for converting battery power from the battery into load power for application to the load. A system controller enables selection between a continuous discharge mode and a discontinuous discharge mode of the battery. In this way, the battery can be operated in different ways according to the most appropriate battery discharge characteristics.

Abstract: The present invention relates to a simple data transmission protocol and a data receiving device (10, 10?, 10?, 10??) for a power over Ethernet system (100?) using the simple data transmission protocol. The device (10, 10?, 10?, 10??) comprises a port and a simple logic unit. The port is configured for receiving power and data transmitted to the device (10, 10?, 10?, 10??) via an Ethernet connection (16?). The simple logic unit is configured to decode data encoded in a characteristic of one or more data packets received at the port. The data can be encoded in data packet length, data packet duration, number of data packets in a predetermined interval, and/or sequence of data packets. The simple data transmission protocol can reduce power consumption as in contrast to the Ethernet protocol MAC does not need to be decoded for information transfer. Hence only simple logic functions are required.

Abstract: The present invention relates to a functional device (10) powered by a constant current driver (12). The device (10) comprises constant current driver (12), electrical energy storage unit (14), functional unit (16), and control unit (18). The device (10) is controlled by the control unit (18) such that the constant current driver (12) provides a constant current to the functional unit (16) and the storage unit (14) in dependence of a pulse width modulated voltage signal. Current is provided to the storage unit (14) for charging the storage unit (14) during at least part of off periods of the pulse width modulated voltage signal. During on periods of the pulse width modulated voltage signal, current is provided to the functional unit (16) and no current is provided to the storage unit (14). This allows providing the device with a constant current driver with less idle periods and lower current supply.

Abstract: The invention relates to a power providing system (1) comprising a power providing device (2) like a PSE and an electrical device (4) like a PD. In a classification mode in a first phase the power providing device provides one or several voltage pulses and the electrical device draws one or several classification current pulses for indicating the class of the electrical device, wherein in a second phase the power providing device provides one or several voltage pulses for indicating the class of the power providing device. Thus, the indication of the classes of the electrical device and of the power providing device is decoupled in two different phases, which can lead to an improved mutual classification procedure.

Abstract: The invention relates to a management unit (1) and a method for operating such a unit in a Power-over-Ethernet (PoE) installation. The management unit (1) comprises at least one first port (12a) to which an external device (2) can be connected, and it is adapted to control the power delivered at a first port (12a) in dependence on predetermined switching rules.

Abstract: The present invention relates to an application device comprising an integrated energy storage, an application controller and a method of operating an application system, supporting different operation modes. In a first operation mode, AC power is provided via a distribution line to operate the application device. In a second mode, the AC power transmission at the distribution line is replaced by data communication, wherein the application device is run by energy from the energy storage during the second operation mode. Preferably in a third operation mode, DC power from the energy storage of an application device may be provided via the distribution line to another application device.

Abstract: A DC-powered device controller (101), comprising a DC-power unit (102) configured to be electrically connected via a wired power line (105) to an external DC-power supply device (104), a control unit (112) connected with the DC-power unit and configured to receive from a DC-voltage monitoring unit (108) response signals indicative of a current voltage amount of the DC-power and to receive, from a mark-event timer unit (110), an extended-mark-time signal when a measured mark-event time exceeds a predetermined mark-event duration threshold, and to enable delivery of the currently received DC-power to an external electrical load unit (106) in event of either one of a) detecting that the current response signal is indicative of the currently received voltage amount falling into an operating voltage interval, and b) detecting that the extended-mark-time signal has been received.

Abstract: The invention relates to powering one or more devices, in particular in the context of Power-over-Ethernet (PoE). In an embodiment of the invention, it is proposed to equip each node (11) with a PD interface (22) that can signal multiples of the standard defined unity load (25 k? with tolerances) during the detection process and increase the load during a sequence of detection attempts. In that way, several nodes (11) can share one PSE outlet and determine the number of neighboring loads (11). At the same time, each node (11) will offer full functionality during “normal” stand-alone wiring. This powering concept can be combined with full or limited data communication capabilities.

Abstract: A radio-power distribution controller (300) for controlling far-field radio-power delivery from an external radio-power-supply-device (302) to at least one external radio-power receiving device (300) that has a power-converter for converting a received radio-energy amount into an electrical operation power amount for operating the radio-power receiving device is provided and comprises a radio-power monitoring unit (306), which is configured to determine a duration of a received power-delivering radio signal, to determine, an estimate of a received radio-energy amount, which has been received by the radio-power receiving device (300). Upon determining that the estimate of the received radio-energy amount is below a threshold energy amount, it provides a radio-power-shortage signal.

Abstract: A lighting device (100), comprising a light source (104) configured to be driven by electrical power, an energy-storage unit (106) configured to store electrical energy, to receive the electrical power from a power interface and to deliver the electrical power to the light source and to the power interface (108) allowing, in a connected state, an energy-transfer operation between the energy-storage unit (106) and an external second energy-storage unit (110) of an external electrically driven device (102) that can be connected to the power interface (108) and a control unit (116) configured to determine if the power interface (108) is in the connected state, to determine a current light-output state of the lighting device (100), and to control, in the connected state, the energy-transfer operation in an energy-transfer direction depending on the current light-output state of the lighting device (100).

Abstract: The present invention relates to a Power over Ethernet system (100) which supports additional optical communication via optical fibres. The powered devices (d1, d2, d3) may comprise circuitry to process optical signals, in particular triggering activation of the powered device (d1, d2, d3) after being in a low power state. The power supplying devices (s1-s6) may relay optical signals via direct optical paths. Optical paths in the network may improve timing accuracy of applications. The overall power consumption of the system may be improved in particular during low activity situations in which the system is primarily used for data communication. The additional optical communication paths may provide redundant paths and thus may increase the network's robustness.

Abstract: The invention relates to powering one or more devices, in particular in the context of Power-over-Ethernet (PoE). In an embodiment of the invention, it is proposed to equip each node (11) with a PD interface (22) that can signal multiples of the standard defined unity load (25 k? with tolerances) during the detection process and increase the load during a sequence of detection attempts. In that way, several nodes (11) can share one PSE outlet and determine the number of neighboring loads (11). At the same time, each node (11) will offer full functionality during “normal” stand-alone wiring. This powering concept can be combined with full or limited data communication capabilities.

Abstract: An electronic verification system is provided, comprising: (I) multiple electronic verification devices (120), comprising: —a beacon receiver (124) arranged to receive localizing beacon signals transmitted from multiple beacons (110) installed in the vicinity of the multiple verification devices, the verification device transmits the beacon message to an external beacon verification computer, and (II) the beacon verification computer (130) configured to analyze the multiple beacon messages to determine if a localization system comprising the multiple beacons is functioning correctly.