Abstract: A touch sensor includes a sensing electrode that receives a touch input disposed on a sensing area of a substrate; and a plurality of sensing lines disposed on a non-sensing area of the substrate. Each of the plurality of sensing lines includes a first area and a second area, and first and second metal layers electrically coupled to the sensing electrode. The second metal layer is disposed on the first metal layer, and an insulating layer is interposed between the first and second metal layers. The sensing lines include first and second sensing lines. The first and second sensing lines include the first and second metal layers in the first area. The first sensing line includes the first metal layer without the second metal layer in the second area, and the second sensing line includes the second metal layer without the first metal layer in the second area.

Abstract: An image forming apparatus can include a print head, a detector, a controller, and a power source. The print head includes one or more light emitting element rows, each light emitting element row composed of a plurality of light emitting elements. The detector detects the number of light emitting elements that emit light according to image data. The controller controls a driving voltage for driving the light emitting element based on a detection result. The power source supplies the driving voltage to the print head.

Abstract: A system includes a luminaire and an input/output device. The luminaire includes a housing and a light emitting element supported on the housing, and the light emitting element is in electrical communication with a power source. The input/output device is supported on the housing and is configured to detect activity in an area proximate the luminaire. The input/output device includes a camera having a lens.

Abstract: A display apparatus and a control method are disclosed. The display apparatus includes a plurality of sub-pixels, at least one photosensitive assembly, and a processor. Each photosensitive assembly is configured to detect and output actual luminance value(s) of at least one sub-pixel. The processor is configured to obtain a display compensation map corresponding to a target sub-pixel according to actual luminance values of the target sub-pixel that are acquired respectively in cases where a plurality of preset display data are input to the target sub-pixel, and target luminance values of the target sub-pixel that are obtained respectively in cases where the plurality of preset display data are input to the target sub-pixel.

Abstract: Systems, devices and methods are described herein. An integrated light emitting diode (LED) lighting system includes an electronics board. An alternating current (AC) input is disposed on the electronics board. Multiple strings of LED devices are disposed on the electronics board, each having an individual voltage threshold. A buck converter is disposed on the electronics board and is electrically coupled to provide a direct current (DC) current based on an AC current at the AC input. A switching circuit is disposed on the electronics board and is electrically coupled to the strings of LED devices to apply the DC current to each of the strings in a sequence beginning at a time when an instantaneous voltage level at the AC input reaches the individual threshold voltage of a first one of the strings of LED devices in the sequence.

Abstract: A DALI interface is provided that includes a digital isolator having an input terminal and an output terminal. A DALI bus controlled by a master device controls a binary voltage state of a voltage rail. A DFET couples between the input terminal and the output terminal to control a voltage of the input terminal responsive to the control of the DALI bus by the master device. The digital isolator responds to the control of the input terminal voltage to drive a digital signal through an isolation barrier to control a voltage of the output terminal to control a slave lighting device.

Abstract: According to a first aspect disclosed herein, there is provided a controller for controlling at least one first luminaire to render lighting scenes in a first environment; the controller comprising: a first input for receiving a lighting sequence defining a first lighting scene to be rendered in the first environment at least until a trigger is received and a second lighting scene to be rendered in response to receiving said trigger in the first environment, thus replacing the first lighting scene; a second input arranged to receive data indicating user presence within the first environment; an output; and a processor arranged to: receive the lighting sequence via the first input; control, via the output, the at least one first luminaire to render the first lighting scene in accordance with the lighting sequence; receive an indication of the trigger and in response thereto, determine, based on data received via the second input, a user presence value within the first environment; and control, via the output,

Abstract: Embodiments determine anomalies in sensor data generated by a sensor. Embodiments receive a first time window of clean sensor data generated by the sensor, the clean sensor data including anomaly free data, and determine if the clean sensor data includes a cyclic pattern. When the clean sensor data has a cyclic pattern, embodiments divide the first time window into a plurality of segments of equal length, where each equal length includes the cyclic pattern. Embodiments convert the first time window and each of the plurality of segments into corresponding curves using Kernel Density Estimation (“KDE”). For each of the plurality of segments, embodiments determine a Kullback-Leibler (“KL”) divergence value between corresponding curves of the segment and the first time window to generate a plurality of KL divergence values.

Abstract: Embodiments of the present disclosure relate to a spark gap device that includes a first electrode having a first surface and a second electrode having a second surface offset from and facing the first surface. The spark gap device also includes a light source configured to emit light toward at least the first surface such that photons emitted by the light source when the spark gap is operated are incident on the first surface and cause electron emission from the first surface. The light source includes a discharge probe having a third electrode sealed in a tube filled with an inert gas. The spark gap device may not include a radioactive component.

Abstract: A downhole electrohydraulic movement arrangement including a spark gap device positioned and configured to move a separate component, and an energy source electrically connected to the spark gap device. A method for moving a component in a downhole environment including disposing an electrohydraulic arrangement having a spark gap device and an energy source electrically connected to the spark gap device operably proximate a component, actuating the spark gap device, generating a pressure wave with the spark gap device, and moving the component with the pressure wave. A downhole system including a borehole, a component moved within the borehole by an electrohydraulic arrangement.

Abstract: A photonic-crystal-fiber-delivered laser-triggered high-voltage gas switch can deliver a peak irradiance of greater than 5.1×1011 W/cm2 to the AK gap for a laser having a wavelength of 1064 nm. The switch is capable of operating at pressures up to 2200 psi; voltages across the gap of greater than 200 kV; operation at less than 70% self-break voltage; shot-to-shot jitter of less than 3 ns; AK gap distances of 3 mm or smaller; and triggering via a fiber-delivered laser pulse energy of as low as 500 ?J.

Abstract: The invention provides a method and device for all-directional induction stepless dimming of an LED lamp. The device comprises an LED lamp power supply main circuit internally provided with a dimming control unit and a primary side main control unit and a human body induction unit used to introduce human body induction signals into a control chip. A PWM duty cycle signal is output by the control chip and is finally transmitted to a source of a field effect transistor Q6 to drive an oscillation transformer T1 to generate an alternating voltage, and a driving voltage is output to an LED lamp after rectification filter. Compared with the prior art, people approaching in two very opposite directions can be monitored at the same time, the brightness of the lamp is adjusted by adjusting the PWM duty cycle on the primary side of a power supply.

Abstract: A luminaire can include a power supply that receives AC mains power from a power source and delivers intermediate power, and can also include a lumen control module coupled to the power supply, where the lumen control module receives the intermediate power from the power source. The lumen control module can include at least one first switch that has multiple positions, and multiple resistors coupled to the at least one first switch, where each position of the at least one first switch corresponds to a resistance of the resistors, where the intermediate power received by the resistors is translated to a current level of a plurality of current levels based on the resistance. The luminaire can also include at least one light source coupled to the lumen control module, where the at least one light source emits a lumen output based on the current level received from the lumen control module.

Abstract: An apparatus comprising at least one pair of a first inner and second outer photodetector, each photodetector comprising a channel member, respective source and drain electrodes configured to enable a flow of electrical current through the channel member between the source and drain electrodes, and a plurality of quantum dots configured to generate electron-hole pairs on exposure to incident electromagnetic radiation to produce a detectable change in the electrical current flowing through the channel member. The first inner and second outer photodetectors are configured to generate electron-hole pairs which produce an increase and decrease in electrical current through the channel members. The first inner and the second outer photodetectors share a common channel member, which is partitioned by one or more of the respective source and drain electrodes respectively extending in two dimensions such that the first inner photodetector is defined within the second outer photodetector.

Abstract: The present invention relates to a Digital Addressable Lighting Interface (DALI) interface and a power device comprising the same. The present invention can provide a DALI interface comprising: a first limiting circuit unit for outputting a limited current based on a DALI transmission signal and a DALI reception signal; and a gate drive circuit unit for generating, based on the limited current, a drain-source voltage that is used for generating a DALI signal in accordance with the DALI standard. As a result, the present invention can generate a signal complying with the DALI standard even under various voltage and current conditions of a DALI master.

Abstract: Systems and methods for managing one or more light sources or other devices are disclosed that utilize a dimmer and demodulator. The systems and methods can be used to modulate light from light sources having four-wire drivers. Each dimmer and demodulator follow a protocol of a lighting control system, and permit use of the lighting control system with lighting fixtures having 0-10 VDC dimming drivers. The dimmer and demodulator preferably communicate via a power line carrier method, which delivers the A/C electrical power and the lighting demand simultaneously.

Abstract: A method of operating a smart lighting system comprising a first mobile device, a lighting control device and first through nth (n being a positive integer) lighting devices, includes establishing, by the first mobile device, a first wireless connection with the lighting control device; performing, by the lighting control device, a first time synchronization with the first mobile device; providing, by the first mobile device, the lighting control device with a scheduling information representing operation of each of the first through nth lighting devices according to lapse of time; and controlling, by the lighting control device, operation of each of the first through nth lighting devices based on a current time and the scheduling information, wherein the current time is determined based on the time synchronization.

Abstract: A luminaire can include a power supply that receives AC mains power from a power source and delivers intermediate power, and can also include a lumen control module coupled to the power supply, where the lumen control module receives the intermediate power from the power source. The lumen control module can include at least one first switch that has multiple positions, and multiple resistors coupled to the at least one first switch, where each position of the at least one first switch corresponds to a resistance of the resistors, where the intermediate power received by the resistors is translated to a current level of a plurality of current levels based on the resistance. The luminaire can also include at least one light source coupled to the lumen control module, where the at least one light source emits a lumen output based on the current level received from the lumen control module.

Abstract: A device having a light emitting diode (LED) of a red-green-blue type, a pulse width modulation (PWM) control, a current supply, and a microcontroller. The RGB LED device arranged for setting a PWM duty cycle using the PWM control and for supplying to the LED either a current of a first value or a current of a second value higher than the first value from the current supply. A method for calibrating the LED of the RGB LED device by measuring sets of tristimulus values when the PWM duty cycle and currents are applied, and calculating from the measured tristimulus values parameters to express colour intensity as a function of PWM duty cycle under the applied current. A method for operating the RGB LED device where calibration parameters linked to the use of a current having a low value and calibration parameters linked to the use of a high current value are determined and used to account for a possible working point shift when switching between the two currents.

Abstract: A modular multilevel converter includes a plurality of sub-modules. Each of the sub modules has at least two electronic switching elements, an electrical energy storage device, two galvanic power terminals, an optical communication input (222) and an optical communication output. A plurality of the sub-modules is connected to a series circuit by way of their communication input and communication output.

Abstract: The lighting system enables the communication and thereby the creation and/or expansion of a network between a sensor and any number of light sources. The network preferably enables the monitoring and controlling of the light sources by the sensor via a wireless communication. The light source can be an LED lamp, an LED lamp tube, an LED retrofit lamp, preferably a retrofit T8 tube, a fluorescent lamp and/or a halogen lamp. The light source can be a ceiling lamp, a wall lamp, a bottom illumination, direct or indirect lighting, a signal lamp and/or a decorative lighting. The sensor is responsible for creating and/or expanding a wireless network between the sensor and the at least one light source.

Abstract: In an aspect, a controller is configured to: receive traffic information; determine a characterization based at least in part on a portion of the traffic information that is associated with traffic from days prior to a current day; determine whether the characterization that is based at least in part on the portion of the traffic information associated with traffic from days prior to the current day satisfies a criteria; provide on the current day, an output based at least in part thereon; determine a characterization based at least in part on a portion of the traffic information that is associated with traffic from the current day; determine whether the characterization that is based at least in part on the portion of the traffic information associated with traffic from the current day satisfies a criteria; and provide on the current day, an output based at least in part thereon.

Abstract: A circuit (200) includes: a diode bridge (210) having polarity-independent input terminals for coupling to a DALI bus, and having positive and negative output terminals, wherein the diode bridge receives a receive signal from the DALI bus; a galvanic isolation device (220) having an input for receiving the receive signal from the diode bridge, and an output for outputting the receive signal galvanically isolated from the diode bridge and the DALI bus; a receive signal threshold reference device (235) for setting a threshold voltage for the galvanic isolation device to respond to the receive signal; an amplifier (280) for receiving the galvanically isolated receive signal from the galvanic isolation device and outputting a binary digital signal via a low pass filter (290); and a first duty cycle control device (230, 270) for adjusting the timing of rising edges of the galvanically isolated receive signal with respect to its falling edges.

Abstract: A method of displaying images includes detecting frequency of ambient light, updating frequency of a display device according to the frequency of the ambient light, and adjusting shutter frequencies of a pair of shutter glasses according to the frequency of the ambient light when the display device is in a 3D display mode. In this way, flickers caused by inconsistency between the frequency of the ambient light and the frequencies of the display device and the shutters of the shutter glasses can be avoided.

Abstract: Methods and systems for detection and monitoring of power supply voltage and voltage reference circuitry are provided. In one embodiment of the invention, a first signal is set to be proportional to a power supply voltage in response to a determination from control circuitry that an output voltage of bandgap voltage reference circuitry is less than a first threshold voltage. The first signal is set to a logic low level in response to a determination from control circuitry that the output voltage of the bandgap voltage reference circuit is greater than the first threshold voltage, wherein the first threshold voltage is less than a bandgap reference voltage. A value of a reset signal is determined based at least in part on the first signal.

Abstract: A lighting system includes: a light source for lighting display and passage spaces; a first detector for detecting presence or absence of part of a human body in a first detection area; and a second detector for detecting human presence or absence in a second detection area. The second detection area contains a whole or part of the passage space. The first detection area is nearer to the article than the second detection area. A controller controls the light source so that: in a case of detecting human absence in which both of the first and second detectors detect human absence, the light source is operated at a reduced light output level; if the second detector detects human presence, illuminance in the display space is increased; and if the first detector detects human presence, illuminance in each of the passage space and the display space is increased.

Abstract: A system wherein a control panel is used to set brightness, select an operation sensor (occupancy or light level), and provide a selection of lights off or reduced light for night conditions. A sensor control mode or a manual control mode may be selected. A sensor module comprises an occupancy sensor and light sensor used to monitor the ambient light at predetermined intervals Absent interrupts from the control panel, the sensor module or the control module, the system is idle. Whenever the system is in an on state, light from light fixtures is adjusted to compliment daylight to produce the user set brightness, thus reducing energy consumption. In an active mode, at least some light remains on, instead of powering off, during periods of system “off”. A delay timer provides time until the light is reduced or turned off entirely.

Abstract: The control apparatus of the present invention determines a motion state of an object and provides an IRLED switching control signal suitable for the motion state in an apparatus for sensing/recognizing a motion of the object by using an infrared light-emitting diode (IRLED) and a photodiode (PD). Such a control apparatus is an LED driving control apparatus, and includes a motion velocity generating unit, a previous section average value generating unit, a state value generating unit, a control unit, and an LED switching control signal generating unit.

Abstract: An interface circuit interfaces a device with a line-pair. The interface circuit includes: a diode bridge having polarity-independent input terminals coupled to the line-pair, and first and second output terminals having a positive polarity and a negative polarity, respectively; a first galvanic isolation device for outputting a receive signal received on the line-pair via the diode bridge; a second galvanic isolation device receiving a transmit signal; a voltage-controlled variable resistance element connected across the positive and negative output terminals of the diode bridge; and first and second filters cascaded between the second galvanic isolation device and the voltage-controlled variable resistance element. The first filter has decoupled charge and discharge paths so as to decouple the rise time and the fall time of the transmit signal. The second filter has a voltage-dependent frequency characteristic.

Abstract: A device and method for detecting lighting conditions to enable brightness control of a display are disclosed. The device includes a display and a first photodiode array to detect light in a visible spectrum and a non-visible spectrum that is incident on the first photodiode array. The device also includes a second photodiode array to detect light in the non-visible spectrum that is incident on the second photodiode array, and a processor to determine the lighting conditions based on a first output of the first photodiode array and a second output of the second photodiode array. The processor adjusts the first output used to determine the lighting conditions based on detecting that the first photodiode array includes a shadowed region, and controls the brightness of the display based on the lighting conditions.

Abstract: A lighting system includes: a lighting apparatus including a first human detection sensor unit that detects a person in a first detection area, and a light source that turns ON when the first human detection sensor unit detects the person; and a support apparatus including (i) a second human detection sensor unit that detects a person in a second detection area, and (ii) an emission unit that emits, when the second human detection sensor unit detects the person, infrared rays to cause the first human detection sensor unit to react as if the person is present in the first detection area.

Abstract: A lifestyle lighting solution using microcontroller technology for controlling nighttime illumination is disclosed wherein the night time illumination is divided into two stages with the first stage being a full power illumination for a preset time period and the second stage being an energy saving/security illumination. The time period of the first stage full power illumination is managed by a virtual timer which is programmable and dynamically variable according to the home owners' living habits and needs. The second stage energy saving illumination with four options is produced by different combinations of dimming techniques and motion sensor. The lifestyle illumination also using microcontroller technology to replace the function of photo cell enables the users to manage their time table of home lighting performance for both indoor and outdoor application. The present invention provides home owners possibility to choose among different working modes integrated in a single lighting device.

Abstract: An apparatus and a system using an infrared ray for performing a variety of stage effect operations. In a light emitting system including a light emitting instruction apparatus and a light emitting device, the light emitting instruction apparatus includes an infrared output which outputs an infrared signal modulated by a control code, and the light emitting device includes a receiver which receives the infrared signal, an extractor which extracts the control code from the infrared signal acquired by the receiver, a light emitter which emits visible light in a plurality of colors, and a controller which executes drive control of the light emitter. The control code transmitted by the light emitting instruction apparatus includes a plurality of verification codes which verify whether to match with ID codes preliminarily stored in the light emitter.

Abstract: A battery powered LED light source is described for illuminating the inside of a dark enclosure when the enclosure is opened in an environment with ambient illumination. Drive circuitry adapted to the LED light source turns on the LEDs when levels of ambient light above a threshold are detected, which may occur if the light source is placed in a dark enclosure that is opened in a lit room. After being opened, the drive circuitry periodically strobes off the LED light source to take ambient light measurements without the contribution of its own LED light for determining if the enclosure has been closed and the LED light source should again be shut off.

Abstract: Illumination devices and related systems and methods are disclosed that can be used for LCD (Liquid Crystal Display) backlights, LED lamps, or other applications. The illumination devices can include a photo detector, such as a photodiode or an LED or other light detecting device, and one or more LEDs of different colors. A related method can be implemented using these illumination devices to maintain precise color produced by the blended emissions from such LEDs. One application for the illumination devices is backlighting for FSC (Field Sequential Color) LCDs (Liquid Crystal Displays). FSC LCDs temporally mix the colors in an image by sequentially loading the red, green, and blue pixel data of an image in the panel and flashing the different colors of an RGB backlight. Precise and uniform color temperature across such a display can be advantageously maintained by continually monitoring ratios of photodiode currents induced by the different colored LEDs in each illumination device as each color is flashed.

Abstract: Networked intelligent lighting devices and other elements connected to the network of a lighting system are readily adaptable to desirable networking arrangements as well as logical functional groups, for example by each storing communication provisioning data and/or configuration data for logically associating system elements into one or more groupings or sub-networks. The exemplary systems and system elements may also enable such enhanced network arrangement via autonomous discovery and device commissioning.

Abstract: A lighting system includes a lighting unit, a first detecting unit, and a control unit. The lighting unit lights a work plane on which a user performs work. The first detecting unit detects the brightness of an object plane in a predetermined range present in a predetermined direction from the user. The control unit controls the lighting unit to emit illumination light having target illuminance corresponding to the brightness detected by the first detecting unit.

Abstract: A two-level LED security light includes a power supply unit, a motion sensing unit, a time setting unit, a loading and power control unit, an external control unit, and a lighting-emitting unit. The LED security light is turned on at dusk for generating a first level illumination and turned off at dawn. When the motion sensor detects any intrusion, the LED security light is switched from the first level illumination to a second level illumination for a short duration time to scare away the intruder. After the short duration time, the LED security light returns to the first level illumination for saving energy. The light-emitting unit includes one or a plurality of LEDs. The time setting unit is for managing illumination timing. The external control unit is for setting illumination characteristics of the first level illumination or the second level illumination of the light-emitting unit.

Abstract: The invention provides a plurality of individually addressable radio frequency (RF) modules, any of which can be installed with any electrical device such as an ambient condition sensor or an ambient condition modifier. A prime example would be a light fixture, whether with or without a dimmable light source efficient dimming and integrated smart sensor networking related to the lighting system itself or to other systems such as parking monitors, fire alarm monitors or security alarm monitors. Independent control processing in each lighting fixture or electrical device allows a multiplicity of sensors to be locally employed and their data to control local conditions or communicate to adjoining fixtures and electrical devices and thereby control larger portions of the lighting system network or network to several unrelated systems.

Abstract: A two-level LED security light with a motion sensor. At night, the LED is turned on for a low level illumination. When the motion sensor detects any intrusion, the LED is switched from the low level illumination to a high level illumination for a short duration time. After the short duration time, the LED security light returns to the low level illumination for saving energy. The LED security light includes a power supply unit, a light sensing control unit, a motion sensing unit, a loading and power control unit, and a lighting-emitting unit. The lighting-emitting unit includes one or a plurality of LEDs which may be turned-on or turned-off according to the sensing results from the light sensing control unit. When the motion sensing unit detects an intrusion, the illumination of the LED security light can be immediately turned on to the high level to scare away the intruder.

Abstract: Apparatuses, methods, apparatuses and systems for standalone sensor unit are disclosed. For an embodiment, the standalone sensor unit includes a plurality of sensors and a controller. The controller is operative to detect a presence of a mobile unit, wherein detecting the presence of the mobile unit comprises the controller being operative to sense motion with a motion sensor, and sense a strobe of light, wherein the sensed motion and the sensed strobe of light occur within a predetermined time of each other, and receive a configuration setting from the mobile unit within a window of time after presence of the mobile unit has been detected.

Abstract: Emission systems having solid-state transducers (SSTs) for producing a target chromaticity of light are disclosed herein. An emission system or SST device in accordance with a particular embodiment can include a first emitter having a first plurality of SSTs positioned to emit light having a first chromaticity, and a second emitter having a second plurality of SSTs positioned to emit light having a second chromaticity different than the first chromaticity. The SST device can further include a controller having a first channel with a variable output, coupled to the first emitter to adjust the brightness level of the first emitter, and a second channel with a variable output, coupled to the second emitter to adjust the brightness level of the second emitter.

Abstract: According to one embodiment, a lighting control system includes a plurality of luminaire, a sensor device, a luminance sensor, and a lighting control unit. The luminaires are set in a lighting space. The sensor device detects presence of a person in the lighting space. The luminance sensor detects indirect luminance in a predetermined position in the lighting space by the luminaire. The lighting control unit subjects the luminaire to lighting control such that the indirect luminance detected by the luminance sensor does not fall below a predetermined value in a position where the sensor device detects presence of the person.

Abstract: A lamp and proximity assembly is provided that includes a lens having a transparent window and a light source disposed to illuminate light through the transparent window of the lens. The lamp and proximity assembly further includes a proximity switch having one or more proximity sensors disposed near a perimeter of the transparent window of the lens and generating an activation field proximate to the transparent field of the lens to sense activation of the proximity switch to control activation of the light source.

Abstract: A lighting device includes a lighting unit, a control unit, and a brightness adjusting unit connected between the control unit and the lighting unit. The brightness adjusting unit includes an operational amplifier and a number of branch circuits parallel connected between the control unit and a positive input terminal of the operational amplifier. Each branch circuit includes a diode and a photoresistor. A reference voltage is applied to an inverting input terminal of the operational amplifier. The operational amplifier compares a voltage on the positive input terminal and the reference voltage, and output a voltage via an output terminal to the lighting unit according to a comparing result. The control unit further controls the diode to switch between a turned on state and a turned off state to adjust the sensitivity of the lighting device in response to user input.

Abstract: An illumination system correlates solar time to a clock and controls lighting or illumination based on time. The illumination system may turn ON light source(s) at a first level at a turn ON time, correlated to be around or at dusk, and turn OFF light source(s) at a turn OFF time, correlated to be around or at dawn. The illumination system may reduce a level of light output, and hence power consumption, at a time after turning ON a light source, and increases the level of light output at a time prior to turning OFF the light source. Turn ON, turn OFF, decrease and increase times may be determined based on recent levels of light or illumination in the environment, for example via average or median levels over a number of previous daily cycles. Filtering may eliminate aberrant events.

Abstract: A lighting system and method for controlling illumination of the same upon detection of a user in at least one of a first detection area and a second detection area. The lighting system can include a lighting fixture having one or more lighting sources and at least two sensors associated with separate detection areas. Each sensor can send a signal to a controller associated with the lighting fixture, and the controller can be configured to vary the illumination of one or more of the lighting sources depending on the each sensor's detection area. The present subject matter facilitates energy savings since areas away from an occupied area are not illuminated. Communication between neighboring lighting fixtures is not required since each lighting fixture can detect the presence of a user in an area proximate an adjacent lighting fixture in order to trigger illumination of the lighting fixture.

Abstract: Controlled Light Emitting Diode (LED) driver comprising an AC/DC converter configured to convert an AC voltage at its input to a DC voltage at its output; at least one LED driver coupled to the output of the AC/DC converter and configured to convert the DC voltage to a pulsed output power for driving one or more LEDs that serve to provide lighting; and a local controller having a control interface. The control interface is configured to receive control information from one or more control sources coupled to it, and the local controller is further coupled to the at least one LED driver for controlling its operation by determining one or more LED driving parameters of the pulsed output power, based on the control information.

Abstract: A method, device, and computer program product are provided for adjusting brightness of an optical touch panel. The optical touch panel comprises a microprocessor, a display module including a back light source, and an optical position detection device including optical transmitting devices and optical receiving devices. The method comprises detecting, via the optical receiving devices, a current ambient light level on the display module. The method further comprises generating, via the optical receiving devices, a current ambient light level signal indicative of the detected current ambient light level and transmitting the current ambient light level signal to the microprocessor. Furthermore, the method comprises adjusting, via the microprocessor, brightness of the back light source based on the current ambient light level signal.

Abstract: A two-level LED security light with a motion sensor. At night, the LED is turned on for a low level illumination. When the motion sensor detects any intrusion, the LED is switched from the low level illumination to a high level illumination for a short duration time. After the short duration time, the LED security light returns to the low level illumination for saving energy. The LED security light includes a power supply unit, a light sensing control unit, a motion sensing unit, a loading and power control unit, and a lighting-emitting unit. The lighting-emitting unit includes one or a plurality of LEDs which may be turned-on or turned-off according to the sensing results from the light sensing control unit. When the motion sensing unit detects an intrusion, the illumination of the LED security light can be immediately turned on to the high level to scare away the intruder.