Abstract: A luminaire driver system comprising: a package with input connections for connection to a power supply and output connections for connection to a light emitting device; a predetermined set of circuits arranged in said package; said predetermined set of circuits being adapted to perform a driving functionality of the light emitting device; a receiving means configured for receiving a pluggable module comprising a further circuit, such that the pluggable module can be received from outside of the package, wherein the further circuit is connected to the predetermined set of circuits when the pluggable module is plugged in the receiving means; and connections which are connected to the further circuit when the pluggable module is plugged in the receiving means; wherein the connections are accessible by a user from outside of the package.

Abstract: A lighting control module (LCM) includes an input configured to receive, from a sensor, a signal indicative of motion and/or occupancy, and to output a first corresponding signal. The LCM includes a microprocessor to receive the first corresponding signal from the input and, in response, transmit a second corresponding signal. A wireless transceiver is communicatively coupled to the microprocessor and configured to communicate with other LCMs. A relay is configured to selectively provide power to an output that is configured to be electrically coupled to a fixture. The relay is configured to selectively provide the power to the output according to a first relay-control signal from the microprocessor. The LCM also includes a regulated power supply, a power input configured to couple the power supply to an external power source, and a dimming module configured to be coupled to the fixture and to, when coupled to the fixture, output a signal to the fixture.

Abstract: A method of programming a respective rule for controlling lighting in each of one or more zones each being occupiable by a user. The method comprises: detecting that a user has actuated one or more actuators serving a zone presently occupied by the user; receiving a user selection through a user interface of a user terminal, to select one or more illumination sources arranged to illuminate the zone presently occupied by the user; and 5 based on this detection and user selection, automatically programming a respective rule into a memory in association with the one or more actuators, the rule specifying how the illumination emitted by the one or more selected illumination sources is to be controlled as a function of a subsequent instance of said user interaction.

Abstract: A packaged illuminating device includes a hybrid light emitting device, a first plurality of bonding wires, a linear constant current circuit, a soldering plate, a second plurality of bonding wires and a protection layer. The hybrid light emitting device includes a plurality of illuminating elements having different or partially same luminance properties. The plurality of illuminating elements are disposed in respective proximities. The linear constant current circuit is electrically coupled to the hybrid light emitting device via the first plurality of bonding wires at a first plurality of pins of the linear constant current circuit. The linear constant current circuit powers up the plurality of illuminating elements using a constant DC voltage and controls duty cycles. The protection layer encapsulates the hybrid light emitting device, the first plurality of bonding wires, the linear constant current circuit, and the second plurality of bonding wires with the aid of the soldering plate.

Abstract: The present application provides an RGB light strips display method, device and computer readable storage medium, wherein the method comprises: establishing a mapping relationship between each odd and even pixel positions in the rotation display area of the alternating RGB light strips and each odd and even pixel points in the image to be displayed, and generates an alternating radius scanning coordinate conversion table; wherein the alternating RGB light strips is composed of two RGB light strips intersected, the RGB light strips is composed of an odd radius light strip and an even radius light strip, the odd radius light strip is used to display odd pixel points in the image to be displayed, the even radius light strip is used to scan the even pixel points in the image to be displayed; and then, according to the alternating radius scanning coordinate conversion table, the pixel point sampling is performed on the image to be displayed to obtain the displayed chrominance information corresponding to the each

Abstract: A system for selectively interrupting the power supply of lighting elements may include one or more lighting elements, motion sensors, and a microcontroller for running a lighting program. In some embodiments, the lighting program may be configured to: determine a dusk time period and determining a dawn time period; create a night period between the dusk time period and the dawn time period in which the night period may be divided into at least a first nighttime period and a second nighttime period; run a first set function program during the first nighttime period; and run a second set function program during the second nighttime period, the second set function program causing the lighting element to function differently during the second nighttime period than during the first nighttime period.

Abstract: Enhancements to ornamental or holiday lighting are disclosed including remote control ornamental illumination with color pallet control whereby a user can vary the color/intensity/appearance of an individual bulb or entire light string by selecting the electronic address of the bulb and selecting its attribute. Further disclosures include: motion responsive lights which respond to sensed movement, gesture controlled lights, adjustable white color/white led sets, connectable multi-function lights, controller to sequence lights to music or other input source, rotating projection led light/tree top/table top unit, and remote controlled sequencing icicle lights and ornament lighting system.

Abstract: A system for driving a light source includes a power converter and control circuitry coupled to the power converter. The power converter converts input power to an output voltage to power the light source. The control circuitry senses the output voltage and senses current of the light source. The control circuitry generates a control signal based on a voltage feedback signal indicative of a combination of said output voltage and said current of said light source, and controls the power converter by the control signal to adjust the output voltage.

Abstract: A method and system for allowing automatic provisioning of a LED lamp in a dimmer system. The dimmer powers the lamp through a switched AC line. A wireless link serves for information exchange between the dimmer and the lamp. When the lamp is turned on by the dimmer, it starts a short waiting period in which it expects to wirelessly receive from the dimmer a provisioning message including a dimmer identification, which it saves to identify dimming messages the dimmer. Another aspect of the invention is disclosed in the above dimmer system, wherein the lamp comprises a backup battery. The dimmer wirelessly informs the lamp upon voltage drops at its input caused by user OFF actions and/or by AC supply outage. The lamp is configured to assume backup mode only upon detecting, based on the above information, a voltage drop at its input caused by an AC supply outage.

Abstract: The present invention concerns a spotlight adapted for a light device, said spotlight comprising a support and at least one light module adapted for producing a light beam and comprising at least one light source, such as a light emitting diode (LED) and an optical element, such as a lens, wherein the light source and optical element are adapted for being positioned in extension of each other in an optical axis.

Abstract: The present disclosure relates to a backlight driving circuit, a backlight driving method, a backlight device and a display device. A backlight driving circuit for driving a light source array, comprising: a control sub-circuit for outputting a control signal and different timing voltage signals; a driving sub-circuit for providing data signals to the light source array according to the control signal; and a selection sub-circuit that corresponds to rows in the light source array, wherein the selection sub-circuit is configured to control the turning-on of light sources of the corresponding rows in the light source array according to the timing voltage signals outputted by the control sub-circuit.

Abstract: Disclosed is an optical measuring apparatus and an adapter for the optical measuring apparatus for easily managing calibration data in the optical measuring apparatus in which a sensor head and a controller are separated. The optical measuring apparatus includes the controller including a light projecting part, a light receiving part, and a control part; a head part including an optical system and a cable; and an adapter configured to be electrically or optically connectable to the cable of the head part and the controller and configured to be attachable to and detachable from the cable and the controller. The adapter includes a ROM configured to store calibration data for correcting the measurement value by the head part.

Abstract: An airfield runway lamp controller is described herein. One airfield runway lamp controller includes a current sense transformer configured to detect a failure of a light source of an airfield runway lamp, and an alternating current (AC) switch configured to shunt the light source of the airfield runway lamp upon the current sense transformer detecting a failure of the light source.

Abstract: An example device is configured to emit a first light having a first luminous flux and a peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 480 nm. The first luminous flux is variable and/or the emission of the first light is interrupted one or more times. The device is also configured to emit a second light having a second luminous flux and a peak intensity at a second wavelength that is greater than or equal to 500 nm and less than or equal to 630 nm. The second luminous flux is variable and/or the emission of the second light is interrupted one or more times. The first luminous flux is at a maximum at least during a time at which the second luminous flux is not at a maximum.

Abstract: A LED driving system for a LED matrix having a plurality of LEDs connected in parallel. The LED driving system includes a plurality of driving modules. Each one of the plurality of driving modules drives a corresponding one of the plurality of LEDs. The plurality of LEDs are divided into a plurality of groups. The plurality of driving modules drive the plurality of LEDs ON successively group by group. In each one of the plurality of groups, the LESs are driven ON successively row by row, and for each row in each one of the plurality of groups, the LEDs are driven ON successively column by column with a programmed delay time between the LEDs in every two successive columns. Each one of the plurality of driving modules can include a grayscale control module for adjusting a brightness of the corresponding one of the plurality of LEDs.

Abstract: An example device is configured to emit a first light having a first luminous flux and a peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 480 nm. The first luminous flux is variable and/or the emission of the first light is interrupted one or more times. The device is also configured to emit a second light having a second luminous flux and a peak intensity at a second wavelength that is greater than or equal to 500 nm and less than or equal to 630 nm. The second luminous flux is variable and/or the emission of the second light is interrupted one or more times. The first luminous flux is at a maximum at least during a time at which the second luminous flux is not at a maximum.

Abstract: A lighting fixture involves a base, at least one yoke, and a shaft, a lighting head is coupled to the at least one yoke, wherein the lighting head is controllably rotatably movable. The lighting head has a first extent at a lighting output side. A transition plate has multiple connection ports through which power can pass from the lighting head to a lighting array, comprising one or more lighting modules. The lighting array has a second extent that is greater than the first extent of the lighting head. The lighting head includes an electrically conductive coupling which will allow the transition plate to be rotated relative to the lighting head, through at least one revolution, while maintaining a continuous electrical path between the lighting head and lighting array when a particular lighting array is coupled to the transition plate and the transition plate is coupled to the lighting head.

Abstract: The pending disclosure describes embodiments of systems, devices and methods of controlling load operations on customer premises based on configuration. Such embodiments include storing output control configuration rules in a memory coupled to a load system controller. Further, such embodiments include receiving configuration instructions from at least one of a remote server and user interface. In addition, such embodiments include configuring the load system into one or more zones based on configuration instructions. Moreover, such embodiments include configuring each zone to be associated with one or more input devices based on configuration instructions. Also, such embodiments include configuring each of the one or more input devices based on configuration instructions. Further, such embodiments include configuring one or more output devices based on configuring the one or more zones, one or more input devices in each zone, the configuration instructions, and the output control configuration rules.

Abstract: A zero current detector control circuit controls a voltage applied to a zero current detector (ZCD) input of a power factor corrector integrated circuit (PFC IC) that produces a driver output having an on time and an off time. The zero current detector control circuit includes a voltage detection input circuit coupled to a rectified AC input voltage. The detector control circuit generates a control voltage applied to a control terminal of an electronic switch. When the rectified AC input voltage has a phase angle in a first portion or in a last portion of a half-cycle, the electronic switch conducts to connect a capacitor to the ZCD input of the PFC IC. The capacitor causes the fall time of the trailing edge of a pulse applied to the ZCD input to increase, which causes the off time of the driver output of the PFC IC to increase.

Abstract: Linear array of lighting nodes (3) which are connected at different respective positions along a flexible, rigid or malleable continuous supporting line (6). One or more attachable dividers (5) are provided, configured to be mechanically attachable by a user onto the line (6) without severing the line, or at least without completely severing the line, each attachable between a respective neighbouring pair of the lighting nodes (3). Each of the attachable dividers (5) is configured so as, when attached to the line (6), to enable detection of a position at which the divider (5) is connected along the line (6) relative to the lighting nodes (3), and configured to provide information related to said position to a controller (7), thus dividing the lighting nodes into different segments along the line. The controller (7) is configured to apply a different lighting effect to the illumination emitted by the lighting nodes (3) in each of some or all of the different segments.

Abstract: An LED luminaire comprising LED arrays, a full-wave rectifier coupled to AC mains, a power switching converter, and an LED driving circuit coupled to the power switching converter is used to replace a conventional luminaire with a severe temporal light artifact. The power switching converter is configured to convert a first DC voltage from the full-wave rectifier into a second DC voltage with a low-frequency ripple associated with the AC mains. By adapting switching frequencies to compensate the low-frequency ripple of the second DC voltage, the LED driving circuit can regulate the second DC voltage into a third DC voltage with a ripple-reduced LED driving current to drive the LED arrays with a flicker-reduced light emission to protect users of the LED luminaire from possible health hazards such as seizures, headaches, eyestrain, reduced visual performance, migraines, etc.

Abstract: Systems and methods for multi-level pulsing of a parameter and multi-level pulsing of a frequency of a radio frequency (RF) signal are described. The parameter is pulsed from a low level to a high level while the frequency is pulsed from a low level to a high level. The parameter and the frequency are simultaneously pulsed to increase a rate of processing a wafer, to increase mask selectivity, and to reduce angular spread of ions within a plasma chamber.

Abstract: A lighting system for a motor vehicle passenger compartment includes a light beam shaping device and an projection optical element configured to convert the light beam into an output beam. The beam shaping device is configured to emit a pixelized light beam formed of a plurality of sub-beams.

Abstract: Techniques and user interfaces (UIs) are disclosed for controlling a solid-state luminaire having an electronically adjustable light beam distribution. The disclosed UI may be configured, in accordance with some embodiments, to provide a user with the ability to control, by wireless and/or wired connection, the light distribution of an associated solid-state luminaire in a given space. The UI may be hosted by any computing device, portable or otherwise, and may be used to control any given light distribution capability provided by a paired luminaire. In accordance with some embodiments, the user may provide such control without need to know details about the luminaire, such as the quantity of solid-state lamps, or their individual addresses, or the address of the fixture itself. In some cases, the disclosed techniques may involve acquiring spatial information of the space that hosts the luminaire and/or providing user-selected distribution of light within that space.

Abstract: An illumination source comprises an array of light-emitting elements for emitting illumination to illuminate an environment. A controller is arranged to control the illumination emitted by different ones of the light-emitting elements so as to form a spatial pattern, and to vary the spatial pattern according to a spatial dimming function whereby the spatial pattern is varied so as to emit a different overall intensity level as a function of a received dimming signal. A value is determined of at least one property relating to a manner in which the illumination source is deployed (e.g. the manner in which it is installed), and the spatial dimming function is set in dependence on the value of this property.

Abstract: A multispectral light source device includes a substrate, a plurality of light-emitting diodes, a cover body and a light guide body. The light-emitting diodes are disposed on the substrate. A plurality of waveband lights with different wavelengths are emitted by the light-emitting diodes. The cover body is disposed on the substrate, and the light-emitting diodes are covered by the cover body. The light guide body is disposed on the substrate. The light guide body has a light guide outlet. The substrate has a first diameter, the light guide outlet has a second diameter, and the ratio of the first diameter to the second diameter is in a range between 9 to 15, so that the waveband lights are moved and converged in the light guide body and emitted through the light guide outlet. As a result, the product can be miniaturized, and the handheld detection instrument can be implemented.

Abstract: The first set of light emitting diode modules include multiple first type light emitting diode units. The first type fluorescent powder covers on the surface of multiple first type light emitting diode units. The second set of light emitting diode modules include multiple second type light emitting diode units and accessory electronic units. The second type fluorescent powder covers on the surface of multiple second type light emitting diode units. The driver circuit transfers the electricity to the first light emitting diode modules and the second light emitting diode modules to make the first light emitting diode unit and the second light emitting diode unit lighting. Moreover, the accessory electronic unit may affect the relative proportion current between the first set of light emitting diode modules and the second set of light emitting diode modules when the driver circuit supplies the different total current value.

Abstract: A continuous power distribution circuit board containing: i) A printed circuit board; ii) A universal power node; iii) At least one channel on the printed circuit board for passage of current, signal and combinations thereof throughout the board; iv) At least one bridge rectifier in communication with the universal power node for rectifying non-discrete input current to discrete output current; v) At least one capacitor in communication with the at least one bridge rectifier minimizing voltage potential fluctuation from the bridge rectifier; vi) At least one current load in communication with the at least one capacitor; wherein the continuous power distribution circuit board maintains a constant current to the at least one current load without any external current controller.

Abstract: The present disclosure provides methods for generating tunable white light. The methods include using a plurality of LED strings to generate light with color points that fall within white, red, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output.

Abstract: A lighting system includes lighting fixtures and a lighting controller that sends commands and data over an AC power line to power and control the lighting fixtures. Lighting themes are uniquely programmable color and intensity that are applied to a collection of lighting groups to achieve different lighting modes instantly, without the delay that programming each lighting fixture individually incurs. The groups of lighting modules receive theme lighting information over the power line and store the theme information in memory. The lighting controller sends a single command to the collections of the lighting groups to apply the theme. Each lighting module retrieves and applies the theme information.

Abstract: According to one embodiment, a light source control apparatus controls a light source emitting phosphorescence. The light source control apparatus includes a driver configured to supply a drive pulse to the light source. The driver is configured to generate a first drive pulse comprising constant amplitude and a pulse width based at least in part on the lighting value and a second drive pulse comprising a constant pulse width and amplitude based at least in part on the lighting value. The driver is configured to supply the first drive pulse or the second drive pulse to the light source in accordance with the lighting value.

Abstract: The examples relate to various implementations to enable simultaneous controllable lighting distribution and a wide angle image light output from areas of a luminaire. An example of such a luminaire includes image light emitters and an array of general illumination light emitters for general illumination. A grid structure that has a supporting grid of rows and columns with intersection points and transparent sections or gaps is used to maintain a spaced arrangement of the general illumination light emitters and the image light emitters. Each of the transparent sections is bounded by individual structural members of the grid meeting at individual intersection points. In a specific example, image light emitters are located at intersection points of the grid structure. The general illumination light emitters are optically coupled for emitting general illumination light through the transparent sections of the grid.

Abstract: A switching circuit with switches between a charging path and a low-impedance active path. The charging path comprises a zener diode substantially in parallel with a charging capacitor. Current flows through the charging path when the circuit is powered on and a power supply charges the charging capacitor while current flows through the charging path. The low-impedance bypass path comprises a switch that remains closed until a voltage across the charging capacitor exceeds a threshold voltage. The switch opens when the charging capacitor exceeds the threshold voltage.

Abstract: A wind power plant has a plurality of wind turbine generators and a power plant controller arranged to communicate with the plurality of wind turbines generators. Each wind turbine generator has a controller arranged to control an active power output in its respective wind turbine generator according to an active power set point received from the wind power plant controller. A change in the active power reference changes the active power set point for each wind turbine generator by a weighting factor.

Abstract: A multimedia faceplate includes a frame having a front face and a rear face and at least one connector mounting aperture therein, a non-Ethernet connector mounted in the connector mounting aperture, an Ethernet conversion unit that is electrically connected to the non-Ethernet connector and a plurality of wire connection contacts that are electrically connected to the Ethernet conversion unit. The Ethernet conversion unit is configured to draw an electrical power signal from either an AC to DC power conversion unit or from a Power-over-Ethernet power signal received from an Ethernet cable that is connected to the wire connection contacts.

Abstract: A light emitting diode (LED) apparatus is provided for driving a plurality of LED lamps (in parallel. The light emitting diode apparatus includes at least one LED driver circuit to provide a LED driving current for the plurality of LED lamps. The LED driver circuit includes a current setting resistance circuit for setting a maximum value of the LED driving current and a detection circuit to detect presence or absence of each of the plurality of LED lamps by detection of the current flowing through each of the LED lamps. The detection circuit adjusts the current setting resistance circuit based on the detection of presence or absence and the current setting resistance circuit includes a plurality of setting resistors and a plurality of transistors.

Abstract: A controllable electrical outlet may comprise a resonant loop antenna. The resonant loop antenna may comprise a feed loop electrically coupled to a radio-frequency (RF) communication circuit and a main loop magnetically coupled to the feed loop. The controllable electrical outlet may comprise one or more electrical receptacles configured to receive a plug of a plug-in electrical load and may be configured to control power delivered to the plug-in electrical load in response to an RF signal received via the RF communication circuit. The RF performance of the controllable electrical outlet may be substantially immune to devices plugged into the receptacles (e.g., plugs, power supplies, etc.) due to the operation of the resonant loop antenna. For example, degradation of the RF performance of the controllable electrical outlet may be less when the controllable electrical outlet includes the resonant loop antenna rather than other types of antennas.

Abstract: A controller includes a current input terminal, a switch monitoring terminal, a first control terminal, a second control terminal and a current monitoring terminal. The current input terminal is coupled to a power source through a rectifier and receives electric power from the power source. The switch monitoring terminal is coupled to a power switch and receives a switch monitoring signal indicating the on/off state of the power switch. The power switch is coupled between the rectifier and the power source. Based on the switch monitoring signal, the first control terminal turns on or turns off a first light source in a light source module and the second control terminal turns on or turns off a second light source in the light source module. The current monitoring terminal monitors a current flowing through the first light source and a current flowing through the second light source.

Abstract: The invention relates to an optoelectronic component, the optoelectronic component comprises a light-emitting layer stack, and an electrothermal protection element, which is connected to the layer stack in the component and has a temperature-dependent resistor.

Abstract: A supply circuit for providing pulses of current has a current source, a reference voltage source for controlling magnitude of the current, and a current switch for controlling whether or not the current passes through a load. Also, there is a switch control signal terminal for controlling the current switch, and glitch compensation elements including at least one capacitance circuit and associated capacitor drive circuit for feeding a variable correcting voltage back to the reference voltage, and a controller to control said variable voltage.

Abstract: A power supply device includes n power supply circuits connected in parallel and a controller to control a number of the operating power supply. The controller includes n detectors, a comparator, and an on/off controller. The n detectors are respectively connected to the n power supply circuits. The n detectors receive feedback current from the number of operating power supply circuits. The comparator compares the feedback current with predetermined first and second reference currents and outputs first, second, and third state signals. The on/off controller determines the number of the operating power supply circuits according to a cumulative number of each of the first to third state signals during a predetermined window section, and controls a on/off state of the power supply circuits according to the determined number.

Abstract: An identification device includes a ring incorporating at least one radiofrequency transponder which includes a microcontroller. The microcontroller includes at least one memory having data storage areas and at least one antenna configured to emit an electromagnetic field carrying identification information. The identification device further includes at least one photosensitive element positioned on an inner face of the ring. The photosensitive element is configured to generate a current when the photosensitive element is illuminated, in order to cause a deterioration of the memory area storing the data.

Abstract: In a predetermined main frame, a display device exerts lighting control on a first LED in a predetermined pixel with a corrected first LED gradation value lower than a first LED gradation value according to gradation data, and exerts lighting control on a second LED included in the predetermined pixel with a second LED gradation value according to gradation data. The predetermined main frame is at least one main frame included in the plurality of main frames. In the predetermined main frame, the first LED gradation value is lower than a first reference value, the second LED gradation value is lower than a second reference value, and a rate of a steady-state period to a whole lighting period in at least one lighting period is smaller than a predetermined value of less than 50% in at least one sub-frame in which lighting control is exerted over the first LED.

Abstract: A control method of the present disclosure causes a computer of an information apparatus to: display on a touch panel display, a display screen representing a floor plan; display device icons on the display screen, the device icons representing one or more target devices respectively, the device icons including an icon representing an electric shutter device that is capable of opening or closing a shutter; display an operation screen on the display screen, when selection of the icon representing the electric shutter device is sensed, the operation screen including a shutter image representing the shutter; and output a movement control command to a network when a swipe operation is sensed on the shutter image, the movement control command being for moving the shutter of the electric shutter device in a swipe direction of the swipe operation, the electric shutter device corresponding to the selected icon.

Abstract: An LED linkable light system including LED light assemblies having LED light fixtures which are linkable together to enable linked individual LED lights to be turned on or off individually or together. Any number of LED linkable light fixtures can be linked together, and electricity is provided by a power cord being linked to one of the linked LED light fixtures and to a power source. The LED lamps are preferably LED shop lights or LED strip lights.

Abstract: An apparatus can include: a network controller in a mesh network, and that transmits and receives first type data packets; node devices in the mesh network, each operable in a first or second mode; a node device being configured to convert at least part of the first type data packets to second type data packets, and to transmit the second type data packets, when the node device operates in the first mode; the node device being configured to convert at least part of the second type data packets to the first type data packets when the node device operates in the first mode; and the node device being configured to transmit and receive the second type data packets when the node device operates in the second mode.

Abstract: A power distribution module (PDM) can include an input portion configured to receive high-voltage (HV) power from a power source. The PDM can also include a power transfer device electrically coupled to the input portion, where the power transfer device is configured to generate at least one low-voltage signal using the HV power. The PDM can further include an output section electrically coupled to the power transfer device and including a number of output channels. The PDM can also include at least one switch disposed between the output section and the power transfer device, where the at least one switch has an open position and a closed position. The PDM can further include a controller communicably coupled to the at least one switch, where the controller operates the at least one switch between the closed position and the open position based on a power demand measured at the output section.

Abstract: A light fixture is described herein. The light fixture can include a housing having at least one wall that forms a cavity. The light fixture can also include a controller configured to control and communicate with at least one sensor located outside the housing. The light fixture can further include at least one light fixture component coupled to the controller and disposed within the cavity of the housing, where the controller further controls the at least one light fixture component.

Abstract: Systems and methods for automatic targeted illumination based on aggregate illumination from multiple light sources are disclosed. In embodiments, a method includes: determining, by a computing device, a localized area of a defined physical location based on received location information; determining, by the computing device, a desired level of brightness for the localized area; calculating, by the computing device, an illumination level at the localized area based on current illumination levels of lighting devices within the defined physical location and locations of the lighting devices within the defined physical location; generating, by the computing device, instructions to effect a change in one or more of the lighting devices, wherein the change in the one or more lighting devices results in the desired level of brightness for the localized area; and sending, by the computing device, the instructions to at least one controller of the one or more lighting devices.

Abstract: A liquid crystal display apparatus is capable of reducing a power loss incurred by a power-supply section in a process of generating a power-supply voltage for driving a backlight section. In the configuration of the power-supply section, a main power-supply circuit and an inverter circuit (or a DC-DC converter) are connected to an input-voltage generation unit in parallel to each other, which is used for rectifying and smoothing the commercial alternative current power. The main power-supply circuit and the inverter circuit (or the DC-DC converter) each include an isolation transformer including a primary-side winding not isolated from the commercial alternative current power and a secondary winding provided on the secondary side. The direct current input voltage is supplied to the primary side to be subjected to a power conversion process to generate an output voltage on the secondary side of the isolation transformer.