APPARATUS AND METHOD FOR MONITORING LED COLOUR MIX

Calibration method and endoscope system

Method of driving LED chips of same power but different rated voltages and currents

Lighting device and illumination apparatus using the same

Lighting device and illumination apparatus using the same

Lighting apparatus, lighting control system, and method of controlling the lighting apparatus

LED LIGHTING DEVICE

Programmable light emitting diode (LED) driver technique based upon a prefix signal

Programmable light emitting diode (LED) driver technique based upon an input voltage signal

Driving circuit with dimming controller for driving light sources

LED light source

Light-emitting diode driving apparatus and light-emitting diode illumination system using the same

Light emitting diode driver with linearly controlled driving current

Intensity control of LEDs interfacing three-way sockets

Trailing-edge-phase-controlled light modulating circuit

Illumination apparatus including semiconductor light emitting diodes

Smooth dimming of solid state light source using calculated slew rate

Illumination device power control module

Techniques for assessing condition of leds and power supply

LIGHT EMITTING DIODE LIGHTING APPARATUS AND DRIVING METHOD THEREOF

Method and circuit arrangement for operating light-emitting means with a sudden load variation

SECONDARY SIDE PHASE-CUT DIMMING ANGLE DETECTION

Lighting systems with uniform LED brightness

Auxiliary power supply for lighting driver circuitry

Examination light apparatus with touch-less control

Lighting driver having multiple dimming interfaces

Operating device with power factor correction and ripple limitation by change in operation

CONSTANT POWER LED CIRCUIT

Controlling an LED string using a current sink with low side voltage regulation

Adjustable output power supply

Method of transmitting signals

Driver circuit for LED backlight of liquid crystal display device

Backlight device and backlight control method

Driving apparatus for LED chips of different specifications

Digital dimmable driver

System and method for learning dimmer characteristics

Lighting apparatus and methods using reconfigurable dimming mapping

Controlled electronic system power dissipation via an auxiliary-power dissipation circuit

Dimmer circuit and LED lighting device having said dimmer circuit

High-efficiency lighting devices having dimmer and/or load condition measurement

Light source control device

Quantization error reduction in constant output current control drivers

Pixel circuits for AMOLED displays

Dimmable LED reading light unit, arrangement of power supply and dimmable LED reading light unit, method of operating a dimmable LED reading light unit in a power supply system, and method of replacing a dimmable light unit by a dimmable LED reading light unit

Dimmable LED reading light unit, arrangement of power supply and dimmable LED reading light unit, method of operating a dimmable LED reading light unit in a power supply system and method of replacing a dimmable light unit by a dimmable LED reading light unit

LED driving device

Dual-mode dimming of a light

Method of operating switch mode power converters, and controllers and lighting systems using such a method

Constant current control circuit with PFC function and its PFC circuit

Photo sensor-integrated tubular light emitting apparatus and lighting system using the same

Light emitting device (LED) light fixture control systems and related methods

Driver circuits for solid state light bulb assemblies

Dimmable LED illuminating system, driver of the illuminating system, and method of driving the illuminating system

Spatial intensity distribution controlled flash

Method and device for remote sensing and control of LED lights

Programmable solid state light bulb assemblies

Driver circuit for LEDs for time-of-flight calculation

SOLID STATE LIGHT AC LINE VOLTAGE INTERFACE WITH CURRENT AND VOLTAGE LIMITING

Current driver for an array of LED diodes

Current driver for LED diodes

Systems and methods for continuous adjustment of reference signal to control chip

LED LAMP FAILURE ALERTING SYSTEM

Low intensity dimming circuit for an LED lamp and method of controlling an LED

Method for driving a light-emitting unit and circuit therefor

Apparatus for driving light emitting diode array and liquid crystal display device using the same

Light emitting apparatus

Power converter circuit for low power illumination device, control circuit thereof and method thereof

Circuit and method for detecting the duration of the interruption of a mains input

Light driving apparatus and driving method therefor

Adaptive holding current control for LED dimmer

LED current control

Power supply apparatus for LED lighting and LED lighting apparatus using the power supply apparatus

LED lighting apparatus, current regulator for the LED lighting apparatus, and current regulation method of the LED lighting apparatus

Power converter control circuit

Lighting device and control device for controlling a plurality of light-emitting diodes in an open-loop and/or closed-loop manner

Power supply device and lighting equipment provided with power supply device

Circuits and methods for reducing flicker in an LED light source

Robust daylight integration with the aid of coded light

Dual mode power supply controller with charge balance multipliers and charge balance multiplier circuits

Power supply device and luminaire

Illumination system

Dimmer circuit and lighting apparatus using the same

Temperature foldback circuit for LED load control by constant current source

Boost converter of driver circuit with thermal compensation

Solid state light source driver establishing buck or boost operation

Circuits and methods for driving light sources

SYSTEM CONTROL UNIT, LED DRIVER INCLUDING THE SYSTEM CONTROL UNIT, AND METHOD OF CONTROLLING STATIC CURRENT OF THE LED DRIVER

Method and apparatus for LED forward voltage measurement for optimum system efficiency

Supervision for a light display device

Dimming control for a switching power supply

LED controller circuit

Operational transconductance amplifier feedback mechanism for fixed feedback voltage regulators

Apparatus and method for dimming signal generation for a distributed solid state lighting system

Lighting device, lighting fixture, lamp, and sound emission prevention method

Controller of an AC-DC converter for LED lighting

HIGH EFFICIENCY LED DRIVER CHIP AND DRIVER CIRCUIT THEREOF

Remote intelligent monitoring system and LED street lamp applied thereto

Active thermal protection for switches

Portable electric lamp with a power supply current control device and method for controlling a power supply current of such a lamp

LED driver

Acceleration of output energy provision for a load during start-up of a switching power converter

Lighting device

Lighting device

Device and method for communication between an electronic module and a detection sensor in the presence of a light source

Lighting system with lighting dimmer output mapping

Electronic circuit to monitor a temperature of a light emitting diode

Light-emitting diode driving circuit

ELECTROMAGNETIC BALLAST-COMPATIBLE LIGHTING DRIVER FOR LIGHT-EMITTING DIODE LAMP

High efficiency led drivers with high power factor

Semiconductor light source lighting circuit

Addressable illuminator with eye-safety circuitry

Method and apparatus to limit current overshoot and undershoot in light driver

Lighting system with power factor correction control data determined from a phase modulated signal

Light Balancing

Vehicle lighting device

Adaptable driver circuit for driving a light circuit

Adaptive bipolar junction transistor gain detection

Method and apparatus for starting up

Illumination system comprising a plurality of LEDs

Blend dimming circuits and relevant methods

Current driver circuit

Power supply device and lighting equipment provided with power supply device

Circuits and methods for driving light sources

Power Supply Device and Lighting Equipment Provided with Power Supply Device

Light emitting element drive device

Continuous Step Driver

Methods and circuits for controlling lighting characteristics of solid state lighting devices and lighting apparatus incorporating such methods and/or circuits

Method and apparatus for operating a group of lighting fixture nodes

LED driver apparatus

Systems and methods for regulating LED currents

LED driver apparatus

Adjustable output solid-state lamp with security features

Switch-mode power supply, control circuit and associated dimming method

Insulated power supply device and lighting device

LED lighting systems and methods for constant current control in various operation modes

Device and method for driving LEDs

LED driving apparatus, method for driving LED, and display apparatus thereof

LED driving circuit

Apparatus for automatically controlling the illumination of LED lighting

Power supply device and lighting equipment

Circuits and methods for driving LED light sources

LED emitting device and driving method thereof

Input voltage sensing for a switching power converter and a triac-based dimmer

LED driving circuit and LED driving controller

Driving controller and full-bridge converting circuit

Adaptive frequency control to change a light output level

LED lighting systems, LED controllers and LED control methods for a string of LEDS

Dimming control device, dimming control method and lighting apparatus provided with dimming control device

LED backlight driving circuit for LCD panels

Current regulating circuit of light emitting diode (LED) string and LED illumination device

3-way, phase-cut dimmable LED driver

Light-emitting diode driving circuit capable of controlling current of light-emitting diode on a full time basis

Power regulation of LED by means of an average value of the LED current and bidirectional counter

Light source control device, projector, and light source control method

Combined digital modulation and current dimming control for light emitting diodes

System for driving a lamp

Light emitting diode driver systems and associated methods of control

Driver systems for driving light emitting diodes and associated driving methods

Lighting device of a motor vehicle

Controllable-load circuit for use with a load control device

Dimming controller for LED driver and method of indirect power estimation

Systems and methods for controlling MOSFETs

Lighting system, control device and control method

Multiple interface LED driver with inherent overvoltage protection

Parallel connectable light control system

Light intensity control of an LED lighting system

Dimmer multi-fire to increase direct AC LED device efficiency

Pulse modulation for isolated auxiliary voltage and dimming signal transfer over single opto-isolator

Controlling flicker caused by multiple light sources

Method and apparatus for horticultural lighting to better simulate the sun

Multifunctional universal LED driver

Lamp having the thermal sensing elements disposed at optimal positions and thermal controlling method thereof

Security light with remote photo-voltaic module and battery backup and related methods

Light-emitting device for providing flash light source

Illumination system and illumination method thereof

Automated environmental control of color temperature using full spectrum color changing light emitting diodes

CCT tuning daylighting system and method based on luminosity measurements

LED control circuit

Turn on optimization

Constant current source LED driver circuit with self-clamped output

Interference-resistant compensation for illumination devices

System and method for controlling a plurality of light fixture outputs

Method and system for optical communication

LED element with color light enhancement function

Intermittent overdrive for sports lighting

Apparatus and method for compensating for reduced light output of a solid-state light source having a lumen depreciation characteristic over its operational life

Illumination device and temperature calibration method

Illumination device and temperature compensation method

Dimmer detection

Reduced standby power in an electronic power control system