Abstract: A vehicle control device mounted on a vehicle for performing communication with a mobile device and performing predetermined control in accordance with communication contents with the mobile device, having a locking operation unit that locks or unlocks doors of the vehicle, interior signal transmitting and receiving units that detect a position of the mobile device left in an interior of the vehicle in a case where a locking operation is performed by the locking operation unit, and an interior lamp drive control unit that lights an interior lamp among a plurality of interior lamps provided in the interior of the vehicle, the interior lamp being close to the position of the mobile device based on information of the position detected by the interior signal transmitting and receiving units.

Abstract: The invention comprises a method for indicating that an LED flash light for an aircraft such as an anti-collision or beacon or strobe LED light has reached a near-end-of-life status, wherein the LED flash light under normal operational condition within a given time interval generates a predetermined number of normal flashes with the number being one or more than one, e.g. two. The method comprises the steps of determining the actual photometric condition of the LED flash light, and comparing the actual photometric condition to a given condition in a normal flashing mode. If the actual condition deviates from the given condition by more than a predetermined amount, the LED flash light is operated in order to generate within the given time interval one additional near-end-of-life-indicating flash.

Abstract: There is provided a method of determining the state of a signal lamp. The method includes receiving time series data corresponding to an electrical signal used to power a signal lamp. The state of the signal lamp can switch from one of the following states to another of the following states: an on state, an off state, and a flashing state. The method also includes determining the state of the signal lamp, based at least in part on both the time series data and an amplitude value of the electrical signal relative to an amplitude-change threshold value over a determined number of amplitude changes.

Abstract: A policy-based OLN (outdoor lighting network) light management system including a central control apparatus (40); lighting unit control apparatus (50); a communication system (60) operably connecting the central control apparatus (40) and the lighting unit control apparatus (50); and a repository (70) in communication with the central control apparatus (40), the repository (70) being operable to store an OLN policy. The central control apparatus (40) is operable to: receive a policy; check the policy for consistency against the OLN policy; determine attributes and configuration commands for each of the lighting unit control apparatus (50) in accordance with the policy when the policy is consistent with the OLN policy; and communicate the attributes and the configuration commands for each of the lighting unit control apparatus (50) to a corresponding one of the lighting unit control apparatus (50).

Abstract: An apparatus to detect faulty connection of LED (open/short conditions) which may affect the function of LED display panel is presented. The apparatus basically controls the switches through control algorithm circuit to get the information of LED driver output pins voltage and compare them with two reference voltages to determine the open/short condition of individual LED.

Abstract: A method of driving a light-emitting diode (LED) light load is disclosed herein. The method includes the step of driving an LED light load in a plurality of different modes. Each mode is defined by at least one of constant current and constant voltage delivered by a power supply. In the exemplary embodiment disclosed herein, each mode can be defined by at least one of constant current and constant voltage and by at least one of variable current and variable voltage.

Abstract: A light emitting diode (LED) light source module includes a circuit substrate, a driving IC electrically coupled to the circuit substrate and having at least one input terminal and an output terminal, an LED coupled onto the circuit substrate and electrically coupled to an output terminal of the driving IC, and a packaging layer, having a transparent structure shaped by a colloidal solidification, such that the transparent structure is covered outside the driving IC and LED, and the LED light source module covers the driving IC and LED by the transparent structure of the packaging layer, and serves as a light source module of a lamp directly without the need of installing another driving IC to the lamp, and promotes its extensive use in LED lamps.

Abstract: A light source driving apparatus for implementing general purpose driving of a high-current light emitting diode (LED) and a low-current LED, and a method for driving the same are disclosed. The apparatus for driving the light source includes a plurality of light emitting diode (LED) strings, and a light emitting diode (LED) driving circuit for driving the LED strings, and having a plurality of channels commonly connected to the same LED string.

Abstract: An illumination beacon including a housing including a transparent top surface and a transparent bottom surface. An upper mounting member is supported within the housing proximate the transparent top surface, and a lower mounting member supported within the housing proximate the transparent bottom surface. An upper light source is supported by the upper mounting member and oriented to project light upwardly through the transparent top surface, and a lower light source is supported by the lower mounting member and oriented to project light downwardly through the transparent bottom surface. A battery is received within the housing intermediate the upper mounting member and the lower mounting member. A power management system is operably coupled to the battery.

Abstract: A simple ambient light detection method that uses the same Light Emitting Diode both for illumination and for ambient light detection by alternatively forward and reverse biasing the Light Emitting Diode. The invention may be implemented without any additional hardware components when incorporated in a digital Light Emitting Diode driver circuit.

Abstract: A monitoring device includes a sensing element, a first switch element, a second switch element, and a warning unit. Brightness of a screen on a display unit is sensed by the sensing element. When the brightness of the screen on the display unit is not greater than a predetermined brightness, the first switch element will be turned on to turn on the second switch element so that the warning unit can be activated. Therefore, the display state of the screen can be monitored automatically.

Abstract: A light emitting system in which a light emission control apparatus wirelessly communicates with at least one controlled light emitting apparatus, the controlled light emitting apparatus comprising a first transmission unit which wirelessly transmits charging state information to the light emission control apparatus, and the light emission control apparatus comprising a receiving unit which receives the charging state information from the controlled light emitting apparatus, an informing unit which informs the image capture apparatus that a charging operation is complete, a second transmission unit which transmits a signal to stop transmitting charging state information, and a third transmission unit which transmits a light emission command to the controlled light emitting apparatus.

Abstract: A first LED emits visible light of an emission color such that with respect to a CIE(1976)L*u*v* color space chromaticity diagram, the chromaticity is exterior to a prescribed white light region wherein the absolute value of a deviation duv from the blackbody radiation locus is at most 0.02 and the color temperature is within a range of from 2,500K to 10,000K, and the deviation duv from the blackbody radiation locus is larger than 0.02, and a second LED emits visible light of an emission color such that with respect to the above chromaticity diagram, the chromaticity is exterior to the prescribed white light region, and the deviation duv from the blackbody radiation locus is smaller than ?0.02.

Abstract: An electronic device, including a battery, a port for connecting a battery charger to charge the battery, a light emitter, and a sensor connected to the light emitter, for activating the light emitter when the sensor detects one or more vicinity light requirements indicating a need for light in the environment of the sensor, and for deactivating said light emitter when the battery charger is successfully connected to the port.

Abstract: A multi-lamp driving system includes a pulse width modulation (PWM) controller, transformers, a current difference detection circuit, a lighting detection circuit, a frequency scanning detection circuit, a frequency regulating circuit, and a duty cycle regulating circuit. The current difference detection circuit detects difference among current flowing through lamps to determine if the current fluctuates. The lighting detection circuit determines if the lamps are lit according to the current, and generates a lighting indication signal after the lamps are lit. The frequency scanning detection circuit determines if the multi-lamp driving system is in a frequency scanning process according to the lighting indication signal, and generates a frequency scanning indication signal if the multi-lamp driving system is in the frequency scanning process.

Abstract: An apparatus for LED string short circuit detection constituted of: a constant current drive circuit; a plurality of LED strings, a first end of each of the plurality of LED strings coupled to a common output of the constant current drive circuit; a first sense resistor coupled between a second end of each of the plurality of LED strings and a chassis; a second sense resistor coupled between the chassis and a return of the constant current drive circuit; and a comparing circuit arranged to compare the amount of current flow through the first sense resistor with amount of current flow through the second sense resistor, the comparing circuit arranged to assert a fault signal in the event that the amount of current flow through the second sense resistor exceeds the current flow through the first sense resistor by a predetermined minimum value.

Abstract: An LED-based light tube for use in a conventional fluorescent fixture includes a housing including a light transmitting portion, at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture, at least one LED arranged to produce light in a direction toward the light transmitting portion, a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level, and a controller in electrical communication with the at least one electrical connector, operable to: compare the signal to a predetermined value corresponding to a desired brightness level and control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level.

Abstract: Improved lighting fixtures are described each of which having its own dimming or intensity control capability that allows for providing the desired lighting output or luminous flux, at each of the fixtures. This capability can be embodied in a dimming device at each fixture that can be manually or wirelessly operated. The present invention is particularly applicable to low voltage landscape or architectural lighting systems, and allows for customizing of the system to meet the particular application. The present invention also allows for tuning of the output for each fixture to compensate for variations in emission.

Abstract: A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings.

Abstract: A wireless intelligent lamp control method is to be implemented by a remote switch handset for wireless communication with a wall switch base, and includes: receiving an ON signal set including at least one ON signal sent from a user-selected command key unit, and determining at least one of a number and a duration of the at least one ON signal; transmitting a wireless signal indicating the user-selected command key unit to the wall switch base for establishing a matching relation when the ON signal set includes only one ON signal and the duration thereof is longer than an ON threshold time; and wirelessly receiving the matching relation from the wall switch base, and storing the matching relation.

Abstract: A method and apparatus for presenting an information signal such as an image signal or a sound signal using a plurality of signal sources. The plurality of signal sources are located within a predetermined space, and the method comprises receiving a respective positioning signals from each of said signal sources, generating location data indicative of locations of said plurality of signal sources, based upon said positioning signals, generating output data for each of said plurality of signal sources based upon said information signal and said location data, and transmitting said output data to said signal sources to present said information signal.

Abstract: A light emitting diode (LED) system includes one or more light emitting diodes (LED), or other lighting devices, configured to provide lighting in an area, and a wireless control system configured to control the light emitting diodes (LED). The wireless control system includes at least one transmitter/receiver device in signal communication with the light emitting diode (LED), and a wireless control device operable by a user, configured to send input signals to the transmitter/receiver device for controlling the light emitting diode (LED), and to receive output signals from the transmitter/receiver device for indicating a status of the light emitting diodes (LED).

Abstract: Apparatus and methods for detecting lamp failure in a rapid thermal processing (RTP) tool are provided. Lamp failure detection systems are provided that can accommodate DC and/or AC voltages. The systems sample voltage signals along a circuit path formed by at least two serially connected lamps, calculate a voltage drop across the first lamp of the at least two serially connected lamps based on the sampled voltage signals, and determine whether a lamp failure has occurred based on a relationship between the voltage drop across the first lamp and a total voltage applied to the circuit path.

Abstract: The present invention provides a cost effective analog apparatus to enable the user to obtain a display of varied color frequencies using a variety of LED light sources, both in the visual and non-visual ranges, acting in synchronous response to electronic input sources. The present invention provides an analog LED controller that includes a power supply terminal, an input terminal, and a plurality of color LED control circuits. The plurality of color LED control circuits include a first color LED control circuit, one or more nth color LED control circuits and a Nth color LED control circuit, wherein 1<n>N and N=a total number of the color LED control circuits.

Abstract: There is provided a method of determining the state of a signal lamp. The method includes receiving time series data corresponding to an electrical signal used to power a signal lamp. The state of the signal lamp can switch from one of the following states to another of the following states: an on state, an off state, and a flashing state. The method also includes determining the state of the signal lamp, based at least in part on both the time series data and an amplitude value of the electrical signal relative to an amplitude-change threshold value over a determined number of amplitude changes.

Abstract: An apparatus for exposing photovoltaic (PV) modules to simulated sunlight for testing purposes, comprising a chamber including a plurality of lamps disposed on a substantially vertical lamp plane, at least one substantially vertical target plane upon which are disposed one or more PV modules, at least one reflector for directing light from the lamps to the at least one target plane, and a cooling system to exhaust heat from the apparatus and maintain the temperature of the PV modules at a predetermined value.

Abstract: A voltage level supplied to power a plurality of LED light fixtures is dynamically adjusted to control the headroom of the voltage level. The current drawn by at least one of the plurality of LED light fixtures is monitored, and the voltage is increased from zero until the monitored current reaches its maximum.

Abstract: A light emitting element drive device includes a light emitting unit that includes a light emitting element and that performs dimming based on a pulse width modulation (PWM) signal, a first switching element that is turned ON or OFF based on the PWM signal and that is connected in series to the light emitting unit, and a protection circuit that includes a charging circuit and a second switching element. The second switching element is turned ON when a first voltage obtained by a charging operation of the charging circuit is equal to or more than a first predetermined value. The charging circuit discharges electric charge through the first switching element when a second voltage between input and output terminals of the first switching element drops. The first switching element is turned OFF despite the existence of the PWM signal when the second switching element is turned ON.

Abstract: Illumination sources are turned ON and turned OFF in response to detected levels of illumination in an ambient environment reaching respective thresholds, which may be user set. The detection of these turn ON and turn OFF events is verified, for instance against expected events or conditions for the particular location, date and/or time. An alert or log entry may be generated if a detected event or condition appears to be invalid. For instance, if an amount of illumination in the environment is different than predicted by a threshold amount or if a time that the event occurs or is detected is different than expected or predicted by more than a threshold amount. A level of illumination may be decreased to some non-zero level after a specified time after turn ON, and increased at some specified time before turnOFF. Use of information from external sources (e.g., satellites, cell towers) may allow times to be using local time, including daylight savings if applicable.

Abstract: An illumination beacon including a housing including a transparent top surface and a transparent bottom surface. An upper mounting member is supported within the housing proximate the transparent top surface, and a lower mounting member supported within the housing proximate the transparent bottom surface. An upper light source is supported by the upper mounting member and oriented to project light upwardly through the transparent top surface, and a lower light source is supported by the lower mounting member and oriented to project light downwardly through the transparent bottom surface. A battery is received within the housing intermediate the upper mounting member and the lower mounting member. A power management system is operably coupled to the battery.

Abstract: A multi-lamp driving system includes a pulse width modulation (PWM) controller, transformers, a current difference detection circuit, a lighting detection circuit, a frequency scanning detection circuit, a frequency regulating circuit, and a duty cycle regulating circuit. The current difference detection circuit detects difference among current flowing through lamps to determine if the current fluctuates. The lighting detection circuit determines if the lamps are lit according to the current, and generates a lighting indication signal after the lamps are lit. The frequency scanning detection circuit determines if the multi-lamp driving system is in a frequency scanning process according to the lighting indication signal, and generates a frequency scanning indication signal if the multi-lamp driving system is in the frequency scanning process.

Abstract: A solid state lighting apparatus includes a plurality of light emitting diodes, a sensor configured to output a sensor signal indicative of at least one operating condition of the solid state lighting apparatus, and a control circuit coupled to the sensor. The control circuit is configured to temporarily interrupt electrical current to ones of the plurality of light emitting diodes at respective intervals responsive to the sensor signal indicating that the operating condition does not meet a desired operating threshold to provide a visible indicator thereof in light emitted by the apparatus. Related devices and methods of operation are also discussed.

Abstract: An illumination device including a lighting device, a detecting module and a display is disclosed. The detecting module is configured for detecting information of the lighting device. The display is configured for receiving the information and displaying the information thereon. Therefore, the user could know the information of the lighting device timely.

Abstract: According to the present invention, a light guidance system for adapted illumination in emergency or power cut situations is provided, wherein the light guidance system is connected to an auxiliary power supply system (101) and comprises at least one light unit (103) adapted to emit light for illuminating surroundings and a control unit adapted to increase a light level of the light unit (103) according to a presence signal indicating the presence of a person, wherein the increasing of the light level is adjusted to enable a mandatory lighting period and a mandatory light level by considering a power value of the auxiliary power supply system (101).

Abstract: A lighting control system is coupled to one or more ballast/drivers operating one or more light sources. A low power control module receives analog, digital and/or DALI signals from one or more sources, processes the signals to provide an appropriate lighting response and outputs one or more commands related to light output of the one or more ballast/drivers operating one or more light sources. A gateway component receives wireless signals from the low power control module to relay to one or more control components. The control components provide instruction to modify the light output of the one or more ballast/drivers operating one or more light sources based at least in part upon the one or more commands received from the low power control module and/or the gateway component.

Abstract: A safety flashing detector that suitably detects unintentional flashing of the LED light engine in a traffic lamp is provided. The LED light engine may flash unintentionally when there are failures (hardware or software) inside a traffic lamp. In certain embodiments, unintentional flashing may be detected using a current sensor. If unintentional flashing is detected, the flashing detector may activate and shut down the LED light engine to remove the hazardous failure and eventually triggers the fuse blowout circuit. Hardware circuitry is suitably employed for both reliability and safety purposes, but software may also be employed.

Abstract: A device for controlling an LED lighting in an LED lighting control system including a plurality of LED lightings which are connected via a network is provided. A lighting data receiver receives a first lighting control signal and extracts first lighting control data for the LED lighting from the first lighting control signal including a confirmation code. A verifier verifies the first lighting control data based on the confirmation code, and an error processor records error information when the verifier fails to verify the first lighting control data. A driving signal processor converts the first lighting control data to a driving signal when the verifier succeeds to verify the first lighting control data. An LED driver controls lighting of an LED light source based on the driving signal.

Abstract: A monitoring system has integrated exit signs, which preferably have electroluminescent elements. The signs connect to internal wiring of a building, but local power sources can provide emergency power if building power is lost. Controllers on the signs communicate with a central workstation using building wiring and/or wireless communication. The controllers have one or more automated features for monitoring operation of the exit signs and the surrounding environment. These automated components, including an intensity sensor, an ambient light sensor, a temperature sensor, a smoke detector, a camera, a speaker, a microphone, a motion detector, an RFID detector, and the like. Because the signs are widely distributed throughout the building, operators can get detailed information of the building environment, security, fire, smoke, temperature, etc. The exit signs can store this information locally and can communicate useful information using a communication link to the central workstation.

Abstract: A method for driving a plurality of LEDs comprises the steps of: driving the plurality of LEDs according to a series of display signals; synchronously detecting the plurality of LEDs in a display mode for obtaining fault information; and serially outputting the fault information.

Abstract: A light source with substantially constant intensity and power consumption is provided. The light source includes a controllable dc voltage and current source; a non-linear light-emitting load supplied with dc voltage and current from the controllable dc voltage and current source; a current sense circuit connected in series with the non-linear light-emitting load; a variable LED forward voltage (varying with temperature, binning batch, aging) sensor circuit; a multiplier operative to measure a power-representative signal; and a power consumption control feedback circuit through which the dc voltage and current source is controlled in relation to the variable forward voltage representative signal to adjust the dc voltage and then a current to amplitudes that keep the light intensity and power consumption produced by the light source substantially constant.

Abstract: A channel detection device is disclosed in specification and drawing, where the channel detection circuit includes a disable circuit, LED pins, receivers and an error detection circuit. The disable circuit sends a disabling pulse to one or some LED pins of the plurality of LED pins, where the one or some LED pins are connected to the disable circuit. Each of the receivers is connected to one of the plurality of LED pins respectively and is capable of outputting an inhibiting signal when the LED pin connected receives the disabling pulse from the disable circuit. The error detection circuit is coupled to the receivers and the LED pins. The error detection circuit is configured to detect open-circuit of some LED pins of the plurality of LED pins, and bypass the detection of open-circuit of some other LED pin of which the receiver outputs the inhibiting signal.

Abstract: The invention relates to automatically configuring of a lighting, particularly to creating a lighting, which follows a person, with a networked lighting system. A basic idea of the invention is to configure lighting in a network of lamps in that a lamp of the network adjusts its light emission depending on presence detection in its own direct environment and the presence detected in the environment of other lamps of the network. An embodiment of the invention relates to a system (10) for automatically configuring a lighting, wherein the system comprises a network of lamps (12), in which every lamp is coupled to a presence detector (14) and can receive signals from other lamps in the network, wherein a received signal indicates an activity detected by the presence detector coupled to the lamp, which transmits the signal, and wherein every lamp adjusts its light emission depending on the signal received from other lamps and the measurement of its presence detector.

Abstract: A high-voltage transformer drive circuit and a high-voltage transformer drive discharge tubes. In at least one example embodiment, a tube current synthesis/high pass filter circuit synthesizes tube currents in the discharge tubes, and extracts a pulse component resulting from arc discharge from the synthesis tube current. A pulse hold circuit holds the extracted pulse component for a predetermined time. A comparator compares an output from the pulse hold circuit with a threshold value, and outputs a signal indicating the presence or absence of the arc discharge. Upon detection of the arc discharge, a logic circuit stops the operation of the high-voltage transformer drive circuit. Thus, arc discharge is detected with high accuracy at low cost.

Abstract: A device and method may include, in a display device, emitting visible light in a humanly imperceptible manner and sensing said light to verify operation of the display device.

Abstract: One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixture malfunction, a cycling condition, a miswiring configuration, or another condition. The determined status can be wirelessly transmitted from the intelligent luminaire manager or other radio frequency device to a network server via a network. The network may be a network of intelligent luminaire managers and/or RF devices.

Abstract: The invention is based on the object of improving the installation and maintenance of lighting systems and of presenting a light segment and a lighting system which are adapted thereto in terms of design. This object is achieved by a method for changing the status of light segments 3 in a lighting system 1, the light segments 3 being connected to one another via a serial data connection 6, the status change comprising the following steps: the serial data connection 6 is interrupted in or at the light segments 3; an item of status change information is transmitted to a first light segment 3 I via the serial data connection 6; the serial data connection 6 is restored in the first light segment 3 I; an item of status change information is transmitted to a second light segment 3 II via the serial data connection.

Abstract: A network operation center for a light management system having networked intelligent luminaire managers. A plurality of networked luminaire managers, each collocated with a respective luminaire, monitor the status of their respective luminaires. The luminaire managers include transmitters for transmitting status information about their respective luminaires and third-party devices to a network server. The luminaire managers communicate with each other, whereby they form a network.

Abstract: A lighting apparatus of the present invention includes: a light source; a power source unit arranged to power the light source; a detector unit arranged to detect the deterioration of ability of the power source unit to power the light source; and a determination unit arranged to determine the life of the power source unit in response to the detector unit.

Abstract: An enhanced control mechanism for an LED light string system is provided for switching between one of two DC output phases or polarities so as to actuate one or the other of two LEDs within the bulbs on the light string. The control mechanism is further configured to allow switching so as to pass through the input power provided by a light string that is plugged into its electrical power feeding end. The control mechanism may provide either AC, rectified AC, or DC voltage of various values to the LED string according to the particular needs of the LED bulbs.

Abstract: Driving a light-emitting element by a driver capable of testing at least an open or short condition of the light-emitting element. In particular, a driving signal is generated to drive the light-emitting element. It is evaluated based on the value of the driving signal whether a predetermined condition is reached. If so, a latch signal is output indicating that the testing has finished.