Abstract: Devices comprise first and second terminals (1,2) connected to first load circuits (21) comprising first light emitting diodes, and third and fourth terminals (3, 4) connected to second load circuits (22) comprising second light emitting diodes, first connections (11) that interconnect the first and third terminals (1, 3), second connections (12) that interconnect the second and fourth terminals (2, 4), at least one of the first and second connections (11, 12) being a power dissipating connection, at least one of the first and second load circuits (21, 22) being adapted to receive first power from a source (31) via the first and second connections (11, 12), and capacitors (41) coupled in parallel to the second load circuits (22) for storing energy received via elements (42) with current-direction-dependencies and for providing second power to at least the second load circuit (22).

Abstract: The invention relates to embedding data symbols of a data signal into a luminance output of an illumination device. The device includes a controller configured for receiving a first base pattern and a second base pattern within a frame period, and generating a shifted second pattern by phase shifting the second base pattern within the frame period with respect to the first base pattern in response to the data signal such that the data symbols are embedded in the luminance output of the device. The device also includes a first light source configured to generate a first luminance output in response to the first base pattern and a second light source configured to generate a second luminance output in response to the shifted second pattern. The first and second luminance outputs have different output spectra and the luminance output of the illumination device comprises both the first and second luminance outputs.

Abstract: The invention relates to a LED lighting system comprising a power supply circuit and at least one LED module. The power supply circuit comprises input terminals (K1, K2) for connection to a supply voltage source and output terminals (K3, K4),and a driver circuit (I, II) coupled between the input terminals and the output terminals for generating a LED current out of a supply voltage supplied by the supply voltage source, and comprising a driver control circuit (II) with an input terminal (K7) for receiving a current control signal and for generating a LED current in dependency of the current control signal.

Abstract: An arrangement includes a voltage input, a reactive element connected in series with the voltage input, and an LED light source. The LED light source includes a first LED unit and a second LED unit, each having at least one LED, a controllable switching device to connect the LED units with the reactive element in a low voltage mode and a high voltage mode, and a control unit. The LED light source has a first, higher, forward voltage in the low voltage mode and a second, lower, forward voltage in the high voltage mode. The control unit controls the current through the LED light source by setting the switching device to the low voltage mode when the current, supplied to the LED light source, corresponds to a first threshold value, and by setting the switching device to the high voltage mode when the current corresponds to a second threshold value.

Abstract: The present invention relates to a data generating system comprising a memory device (302), which comprises memory cells (306, 308) and a cell content access unit (310) arranged to access content in the memory cells and provide corresponding output data, wherein the output data originating from at least one of the memory cells (306) is changeable by means of an external physical effect acting directly on the memory device.

Abstract: A circuit arrangement (1), a detection circuit (50, 70) and an LED driver circuit (100, 110) is disclosed for operating at least one lighting unit, such as an LED unit, with a phase-cut operating voltage. The circuit arrangement (1) comprising at least an input (6) for receiving a phase-cut operating voltage from said power supply and/or an output (7) for connection to said at least one lighting unit and a pulse injection circuit, configured to determine a phase-cut operation of said power supply and to draw a current pulse from said power supply within a delay time between 200-700 ?s after said phase-cut operation to provide a stable operation of said LED unit with the phase-cut power supply.

Abstract: The invention relates to LED lighting system comprising a power supply circuit and one or more LED modules. The power supply circuit is equipped with input terminals (K1, K2) for connection to a supply voltage source and first and second output terminals (K3, K4), and a driver circuit (I, II) coupled between the input terminals and the first and second output terminals for generating a LED current. The driver circuit (I, II) comprises a driver control circuit (II) equipped with an input terminal (K7) for increasing or decreasing the LED current in dependency of a signal present at the input terminal of the driver control circuit.

Abstract: The present invention relates to a driver device (30) for driving a load (32), in particular an LED unit (32) having one or more LEDs, comprising input terminals (45) for receiving an input voltage (V14) from an external power source (12) for powering the load (32), a current path (46) including a controllable switch (50) for connecting the input terminals (45) to each other, a measurement path (48) including a resistor (56, 58, 84, 86) connecting the input terminals (45) to each other for providing an alternating voltage corresponding to the input voltage (V14) and including a measuring device (64, 70) for measuring the alternating voltage (V15) at the measurement path (48), and a controller (54, 62) for controlling the controllable switch (50) on the basis of the measured alternating voltage.

Abstract: The invention relates to a lighting system comprising:—a substrate comprising a resistive sheet (RS) comprising multiple electrodes (A, B, C, D), each electrode being suitable for connection to a respective voltage source,—a plurality of lighting elements (LEI, LE2, LE3, LE4), each element comprising a light source (LED) and at least two contact pins (CP1, CP2) for electrical connection to respective electrical connection terminals and a control circuit for controlling the light output and/or the color of the light generated by the light source in dependence on the voltage between the contact pins, wherein the electrical connection terminals are distributed over the resistive sheet such that the lighting elements can be connected in different positions and in different orientations, wherein the voltage present between the contact pins depends on the position and orientation of the lighting element and wherein the light output and/or the color of the light generated by the lighting element depends on the magni

Abstract: The invention relates to a driver (100) for a light emitting device system (112), comprising power supply terminals (108) and a detector circuit (106), the power supply terminals being adapted for supplying electrical power from the driver (100) to the light emitting device system and the detector circuit being adapted for capturing sensed information of the light emitting device system via the supply terminals by sensing an electrical loading of the terminals caused by the light emitting device system and for determining an operating condition of the light emitting device system, using the sensed information, wherein the driver is further adapted to control the supplied power depending on the determined operating condition.

Abstract: Devices comprise first and second terminals (1,2) connected to first load circuits (21) comprising first light emitting diodes, and third and fourth terminals (3, 4) connected to second load circuits (22) comprising second light emitting diodes, first connections (11) that interconnect the first and third terminals (1, 3), second connections (12) that interconnect the second and fourth terminals (2, 4), at least one of the first and second connections (11, 12) being a power dissipating connection, at least one of the first and second load circuits (21, 22) being adapted to receive first power from a source (31) via the first and second connections (11, 12), and capacitors (41) coupled in parallel to the second load circuits (22) for storing energy received via elements (42) with current-direction-dependencies and for providing second power to at least the second load circuit (22).

Abstract: Electrical device (30) for compensating an effect of an electrical current (1L) of a load (14; 34), in particular an LED unit having one or more LEDs, when the load is supplied via a phase cut dimmer, which is normally conceived for traditional filament lamps. The electrical device comprising a connection element (66) for electrically connecting the electrical device (30) to an external power source (12) providing a supply voltage (V 10) for powering the load (14;34), a monitoring device (46; 52) for monitoring the electrical current (1L) of the load (14;34) during a first time interval (Toff), and a signal controller (62, 64) connected to the connection element (66) for providing an electrical compensation signal (13) to the connection element (66) during a second time interval (TIR, TDC) on the basis of the electrical current (1L) monitored by the monitoring device (46; 52).

Abstract: A circuit arrangement for selective powering of distributed loads (D1-D7, 220-226, 213a-213e) is provided, comprising a plurality of load segments (10, 20, 30, 40, 50, 60, 70), each being electrically connected to at least one supply terminal al for receiving a variable voltage, wherein each load segment (10, 20, 30, 40, 50, 60, 70) comprises at least a load unit (D1-D7, 220-226, 213a-213e) and a proximity sensor unit (11), coupled with said load unit and comprising at least a reactive device (L1-L7, L1a-L7a, C1-C7, C1a-C7a, 214a-214e, 215d) having a reactance, said reactance depending on the proximity of a detection object (100, 102).

Abstract: The invention relates to a method and a lighting device (100) for generating light. The lighting device (100) comprises at least one light source (105a, 105b, 105c) connected to two receiving-electrodes (106a, 106b, 106c). Moreover, it comprises at least two supply-electrodes (103A, 103B, 103C, 103D) for generating an electrical field (E), wherein the relative configuration between the receiving-electrodes (106a, 106b, 106c) and the electrical field (E) can change. Such a change may for example come about by a movement of the receiving-electrodes (106a, 106b, 106c) relative to the electrical field (E) and/or by changing the configuration of the electrical field (E). The light source (105a, 105b, 105c) and/or the receiving-electrodes (106a, 106b, 106c) are preferably embedded in a non-solid filling of a container (101). Thus three-dimensional structures of light sources can be designed in which the light sources (105a, 105b, 105c) may optionally be movable.

Abstract: A wireless lamp detection system (20, 20?) is provided to wirelessly determine the topology of a lighting system (1) or the type of the power supply (3). The detection system (20, 20?) comprises a probe device (21, 21?) having at least a measurement probe (22), adapted for wireless coupling to a lamp (2) to provide a probe signal, corresponding to at least one physical parameter of said lamp power supply (3). A processing unit (29, 29?) is provided, connected with said probe device (21, 21?) to receive said probe signal and configured to determine a type oflamp power supply (3) from said probe signal.

Abstract: The present invention relates to a driver device (60) for driving a load (12), in particular an LED unit (84) having one or more LEDs, comprising: input terminals for receiving an input voltage (V10) from an external power source (16) for powering the load (12), connection means (64) for connecting the input terminals to each other and for providing a current path (66, 68) dependent on the polarity of the input voltage (VI 0), wherein the connection means (64) comprise a first current path (66) for connecting the input terminals in a first current direction and a second current path (68) for connecting the input terminals in a second current direction opposite to the first current direction, wherein the first and the second current path (66, 68) each comprise a current control unit (88, 90) for controlling a bleeding current (13, 14) in the respective current path (66, 68), and wherein the first and the second current path (66, 68) each comprise decoupling means (92, 94) for blocking the bleeding current (13,

Abstract: The invention relates to an LED lamp (1, 1?, 1?, 1??, 1??) comprising at least one light emitting diode (LED, 2) arranged in a housing (3), and an isolation monitoring device (4) configured to determine a defect of the housing (3) and disconnect said at least one LED (2) from power in case said defect is detected, to enhance the safety of the LED lamp (1, 1?, 1?, 1??, 1??) and reduce the risk of electric shock for a user.

Abstract: To avoid clock signals and to separate power wiring from control wiring in a driver, and to avoid three-terminal light emitting diodes with control electrodes, a driver for driving light emitting diode circuits (10, 20, 30) is provided with first and second terminals (1, 2) for receiving a voltage signal from a source (5) and with a first switching circuit (11, 2) coupled to the second terminal (2) and to a third terminal (3). The first and the third 5 terminal (1, 3) are to be coupled to electrodes of a first light emitting diode circuit (10). The first switching circuit (11, 12) comprises a first switch (11) and a first timing circuit (12) for, in response to a first pulse signal as added to the voltage signal, activating the first switch (11) to switch on the first light emitting diode circuit (10). Sequential pulse signals may be used to sequentially switch on light emitting diode circuits (10, 20).

Abstract: Determining an amount of light output from a solid state lighting (SSL) unit based on a dimmer setting includes determining the dimmer setting of the dimmer during a readout mode by analyzing a power signal received from the dimmer, the dimmer setting indicating a desired level of light, determining power needed at input terminals of the SSL unit for an SSL load to output the desired level of output light, and determining a value of an adjusting signal for adjusting the power at the input terminals of the SSL unit during a power reception mode, based at least in part on the determined dimmer setting, causing the SSL unit to output the desired level of light.

Abstract: The invention describes an AC-LED lighting circuit (1) comprising an AC-LED arrangement (10) with at least a first set (11) of LEDs connected according to a first polarity and a second set (12) of LEDs connected according to the opposite polarity, which AC-LED lighting circuit (1) is characterized by (i) a source (61) of a polarity-selectable DC input signal (51) to be applied to the AC-LED arrangement (10), or a connecting means (40) for connecting the AC-LED lighting circuit (1) to a fixed-polarity DC input signal (50) and a conversion means (T1, T2, T3, T4) for converting the fixed-polarity DC input signal (50) to a polarity-selectable DC signal (50?) to be applied to the AC-LED arrangement (10); and (ii) a polarity controller (70, 71) realized to control the polarity of the polarity-selectable DC signal (50?, 51) applied to the AC-LED arrangement (10) such that the first set (11) of LEDs of the AC-LED arrangement (10) is driven when the polarity-selectable DC signal (50?, 51) has the first polarity, and t