Signify Holding B.v.

Koninklijke Philips Corporation N.v.

Koninklijkle Philips N.v.

Johannes Petrus Wernars

Marcel Beij

Victor Mayr

Lorenzo Feri

Jun Zhu

Bernd Clauberg

Liang Hong

Johan P M G Linnartz

Anteneh Alemu Abbo

Yuhong Fang

Frits Tobi De Jongh

Jaco Van Der Merwe

Johannes Adrianus Cornelis Misdom

Roy Hendrik Anna Maria Van Zundert

Tim C W Schenk

Ashwin Premraj

Paulus H A Damink

Jozef Johannes Maria Hulshof

Ming Li

Hendricus T G M Penning De Vries

Jozef J M Hulshof

Remco Rudolf Wilhelmus De Jager

Sel B Colak

Jozef JM Hulshof

Marcus Cornelis Van Meel

A surge suppressor is provided comprising a Metal Oxide Varistor, MOV, connected to a current-conductive track and arranged for suppressing surges present on the current-conductive track. The surge suppressor includes a temperature dependent component thermally coupled to the current-conductive track. An electrical parameter of the temperature dependent component is dependent on temperature and control means is arranged for providing a quantitative measure of a lifespan of said MOV based on fluctuations of the electrical parameter over time.

Surge suppressor arranged for suppressing surges, a driver comprising a surge suppressor as well as a method for operating the surge suppressor

In one aspect, a device is adapted to transmitting power to, or receive power from, a remote device over first and second communication lines (DALI+, DALI−) and to communicate with the remote device over the first and second communication lines. A first driver implements a first communications protocol which comprises coupling the first and second communication lines together to encode a first signal level and isolating the first and second communication lines from each other to encode a second signal level. This may be a DALI protocol. A second driver implements a second communications protocol which comprises modulating the first communication line with a signal having a low modulation depth. The second communications protocol means there is always a voltage difference between the two communication lines to enable continuous power harvesting. A second aspect relates to efficient power transfer by disabling a current limiter function, when possible.

Power supply device, a power receiving device and power supply and receipt methods

An LED based lighting device capable of Radio Frequency communication, said LED based lighting device comprising a driver board comprising a mains input connector, an LED output connector and an LED driver, wherein said LED driver is arranged for receiving a mains power supply, via said mains input connector, and for providing an LED current to an at least one LED, via said LED output connector, an LED board comprising an LED input connector, an antenna and said at least one LED, an interconnect cable connecting said driver board to said LED board via said LED output connector and said LED input connector, wherein said driver board further comprises an RF module arranged for generating an RF signal and for superimposing said generated RF signal on said LED current such that said RF signal is conveyed over said interconnect cable to said antenna.

Light emitted diode, LED, based lighting device as well as a corresponding LED board and a driver board

An isolated converter has a transformer with a primary winding (in a primary side circuit) and a secondary winding magnetically coupled to the primary winding. A first Y-capacitor is electrically connected between the primary side circuit and the secondary winding. The detection circuit is for detecting information at the primary side, preferably information about the input supply received at the input, and more preferably the information is that whether the input supply is an alternating current (AC) supply or a direct current (DC) supply, and the detection circuit includes the first Y-capacitor. The detection circuit enables the detected information to be provided directly to a secondary side controller, without needing opto-isolators or other isolated data transmission. The detection circuit () comprises a capacitor divider comprising the first Y-capacitor (C), and further comprising a second impedance and a third capacitor (C) connected in series with the first Y-capacitor (C), with the first Y-capacitor (C), the second impedance, and the third capacitors (C, C, C) in series between a primary side ground (PGND) and the input (), wherein the detection circuit is for detecting a voltage across a second impedance to obtain a signal indicating the information at the primary side. Preferably the second impedance comprises a second capacitor (C).

Isolated converter and led driver using the isolated converter

A programming device () for programming a controller () in an electronic driver () comprises a controllable voltage supply () for generating an AC supply voltage suitable for supplying the electronic driver () and a programming controller () for controlling the voltage supply (). The programming device () is designed to modulate the supply frequency in order to both feed the electronic driver () and send programming data to the electronic driver ().

Method and device for programming a microcontroller

A method for driving a lamp () comprises the steps of: generating a lamp current (I) having a constant magnitude; defining a commutation period having a duration T; defining a time base of original commutation moments, having fixed mutual intervals of 0.5*T; receiving data to be embedded in the light output; commutating the lamp current at commutation moments; wherein individual commutations are time-modulated in order to encode said received data. Preferably, a commutation moment is: either equal to an original commutation moment if there are no data to embed; or advanced over a modulation distance (&#x394;) with respect to the corresponding original commutation moment in order to encode data having a first value ('0'); or delayed over said modulation distance (&#x394;) with respect to the corresponding original commutation moment in order to encode data having a second value ('1').

Method and device for driving a lamp

A method is described for driving a light source, particularly a HID lamp (), the method comprising the steps of: providing a commutating DC current for supplying the lamp; and varying a commutation period (T) in order to transmit data. In an embodiment, the duration of each commutation period (T) is set to be equal to one of two possible values (T, T) such as to encode a digital bit.

Method and device for communicating data using a light source

In a method of driving a lamp using a lamp control circuit, the lamp control circuit comprises a communication circuit and a lamp driving circuit. The lamp driving circuit is configured to drive a lamp in accordance with a number of lamp operating parameters. The method comprises providing a lamp operating parameter to a memory of the communication circuit; providing a supply voltage to the lamp driving circuit; and supplying the lamp operating parameter from the memory to the lamp driving circuit. Then, driving the lamp by the lamp driving circuit corresponding to the supplied lamp operating parameter In the lamp control circuit, the communication circuit comprises a memory and is configured to supply the lamp operating parameter to the lamp driving circuit, when the lamp driving circuit is supplied with a supply voltage. In an embodiment, the lamp operating parameter may be supplied to the memory when no supply voltage is supplied to the lamp control circuit.

Lamp control circuit and method of driving a lamp

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Oss, Netherlands

Johannes Petrus Wernars