Disclosed is a method and device for directing a lighting effect that induces dynamic effects by using a masking layer. The method and device for directing a lighting effect may selectively control emission of a plurality of light emitting devices based on a masking layer, thereby inducing dynamic imaging effects such as moving images in a direction object, and may achieve the direction having a high degree of freedom by directing the direction position, size, or rotation of an object during a performance direction in a performance hall.

This application discloses an anode addressing drive circuit, an addressable drive circuit, and a laser emission circuit. The anode addressing drive circuit includes: an anode addressing switch circuit, including an anode addressing switch element, where a first end is connected to an emission power supply, a second end of the anode addressing switch element is connected to an anode energy storage circuit, an anode addressing enabling end of the anode addressing switch element receives an anode addressing signal, and the anode addressing switch element is turned on or off under the control of the anode addressing signal; and an anode energy storage circuit, including an anode energy storage element and a current limiting element, where the anode energy storage element is configured to be charged through an output current of the emission power supply when the anode addressing switch circuit is turned on, and the current limiting element is configured to limit a current for charging the anode energy storage element.

A switched capacitor array having a plurality of capacitors arranged in a plurality of branches having different numbers of capacitors, and a plurality of switches connected to selectively couple the capacitors across the input or the output may be used for powering a variety of loads. A switched LED array may be dynamically configured based on a voltage supplied thereto, which may be supplied by a switched capacitor array. A lighting apparatus may be provided with first and second blocks, each block comprising a switched capacitor array, a switched LED array, and a control system.

A switched capacitor array having a plurality of capacitors arranged in a plurality of branches having different numbers of capacitors, and a plurality of switches connected to selectively couple the capacitors across the input or the output may be used for powering a variety of loads. A switched LED array may be dynamically configured based on a voltage supplied thereto, which may be supplied by a switched capacitor array. A lighting apparatus may be provided with first and second blocks, each block comprising a switched capacitor array, a switched LED array, and a control system.

An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases, the optoelectronic circuit including a plurality of groups of light-emitting diodes and a switching device for allowing or interrupting the circulation of a current through each group, the switching device also being suitable for detecting whether said variable voltage is supplied by a dimmer.

An electronic driver circuit for LEDs and LASERs is provided for use in time-of-flight applications featuring a high efficiency of energy-conversion and a high precision of distance-measurements based on a dual conversion circuit. A voltage to voltage DC-DC conversion is hereby merged with a DC-voltage to pulsed-current booster, this booster operating at a time-of-flight modulation frequency. At the start of a new measurement cycle, the PWM signal for driving the DC-DC conversion is updated in response to currents observed during previous illumination periods.

According to the present invention, provided is an LED driving circuit comprising: a first rectification module, connected to an alternating current power source, for full-wave rectifying an applied alternating current voltage and for supplying a first rectification voltage which has been full-wave rectified to an LED light emitting module as a first driving voltage; and a second driving voltage supply module, connected to the alternating current power source in parallel with the first rectification module, for full-wave rectifying an applied alternating current voltage to generate a second rectification voltage, for charging energy using the generated second rectification voltage at a charging section, and for supplying a second driving voltage to the LED light emitting module at a compensating section.

A method and system provide accent lighting at a bank of gaming machines. A plurality of LED panels are provided to be assembled in a number of different configurations for a series of LED panels. An electronic controller coupled to communicate through said data communication interface with the series of LED panels. The electronic controller is programmed to transmit signals to LED drivers of the LED panels, receive a loop-back signal transmitted from a final one of the LED panels, based on timing of said received loop-back signal automatically identify a configuration of the series of LED panels from said number of possible configurations, and transmit commands for activating the LED drivers of the LED panels based on the identified configuration.

A LED lighting system, such as a dimmable LED lamp, that may simulate the performance of an incandescent bulb. LED strings of different colors may be connected to the output of a single LED driver that regulates an overall intensity of light produced by the LED lighting system. The color of the LED lighting system may be controlled by circuitry, such as one or more switches, that allocates current between the LED strings to change the color temperature of light emitted by the LED lighting system as the light intensity changes.

An image formation device is provided which includes a variable resistor of which a resistance value changes in accordance with a user operation, an A/D converter that outputs information relating to a voltage applied to the variable resistor, and a pulse width modulation (PWM) controller that outputs a PWM signal having a duty ratio determined based on the information output by the A/D converter. The PWM controller outputs the PWM signal that has the duty ratio determined based on the information input with reference to a timing for inverting a logic state of the PWM signal.