Entries |
Document | Title | Date |
20090066257 | DIELECTRIC BARRIER DISCHARGE LAMP LIGHTING APPARATUS AND METHOD OF DETECTING THE NUMBER OF NORMALLY LIGHTING DIELECTRIC BARRIER DISCHARGE LAMPS - A dielectric barrier discharge lamp lighting apparatus includes twenty-four dielectric barrier discharge lamps, and a ballast circuit for lighting the twenty-four dielectric barrier discharge lamps which includes a DC power supply, an inverter circuit, a step-up transformer, and a lighting lamp number detecting circuit. The lighting lamp number detecting circuit detects the number of normally lighting dielectric barrier discharge lamps based on a first peek appearing right after polarity change of an approximate rectangular wave provided from the step-up transformer. When the detected number is less than a predetermined value, the operation of the ballast circuit is controlled to be stopped. | 03-12-2009 |
20090108760 | TROUBLE DETECTING CIRCUIT - A trouble detecting circuit includes (a) a loop circuit conducting a loop current to two discharge tube lamps in a normal state, in which the two discharge tube lamps are driven with two alternating driving voltages having phases reverse to each other by one or two secondary side windings of one or two transformers, and (b) a monitoring circuit monitoring a voltage between two points which are at a substantially same potential in a normal state in the loop circuit. | 04-30-2009 |
20100026190 | LED DRIVER CIRCUIT AND THE METHOD THEREOF - 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. | 02-04-2010 |
20100134019 | METHOD FOR OPERATING A LIGHTING SYSTEM AND LIGHTING DEVICE FOR CARRYING OUT THIS METHOD - The invention relates to a method for operating a lighting system having at least one central control device and a plurality of lighting devices, wherein at least one point of light can be created with each lighting device, and wherein at least one illumination parameter can be modified with a local control device in each lighting device, and wherein the location of the lighting device can be determined with a positioning sensor system in each lighting device, and wherein data transmitted wirelessly can be received from the central control device by each lighting device via a data interface, with the following process steps:
| 06-03-2010 |
20100225235 | LIGHT EMITTING DIODE DRIVE DEVICE, ILLUMINATION DEVICE, IN-VEHICLE CABIN ILLUMINATION DEVICE, AND VEHICLE ILLUMINATION DEVICE - A light emitting diode drive device includes a drive circuit section that applies a direct-current voltage to a light source including a plurality of light emitting diodes connected in series to allow the light source to light up, a voltage detection circuit section that detects a voltage across the light source, and a malfunction determination circuit section that determines that the light emitting diode is short-circuited when the voltage detection circuit section detects a voltage drop and a potential between the voltage before being dropped and the voltage after being dropped is equal to or more than a predetermined threshold value. Thus, it is possible to detect a fact that a light emitting diode, which lights up, is short-circuited or is not short-circuited, with a simple circuit configuration. | 09-09-2010 |
20100264828 | Failure Detection for Series of Electrical Loads - An apparatus for detecting failures in an illumination device includes at least two light emitting diodes connected in series. The apparatus includes a first, a second, and a third circuit node for interfacing the illumination device such that the voltage drop across at least two light emitting diodes is applied between the first and the second circuit node and a fraction of the voltage drop is applied between the second and the third circuit node. An evaluation unit is coupled to the first, the second, and the third circuit node and configured to assess whether the electric potential present at the third circuit node is within a pre-defined range of tolerance about a nominal value that is defined as a pre-defined fraction of the potential difference present between the first and the second circuit node. | 10-21-2010 |
20100270933 | Power Management Unit with Power Metering - In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more of rotatable LED light bars, integrated sensors, onboard intelligence to receive signals from the LED light bars and control the LED light bars, and a mesh network connectivity to other fixtures. | 10-28-2010 |
20110101868 | REPLACEABLE LIGHTING UNIT WITH ADJUSTABLE OUTPUT INTENSITY AND OPTIONAL CAPABILITY FOR REPORTING USAGE INFORMATION, AND METHOD OF OPERATING SAME - A lighting unit includes a power supply, a light source, a controller, and an output intensity adjustment mechanism. The adjustment mechanism is configured to allow a user to set an output intensity of a plurality of non-zero intensities generatable by the light source. The controller is operable to control a supply of electrical power from the power supply to the light source such that the light source illuminates in accordance with the intensity set by the user. The lighting unit is also operable to optionally report usage information for the lighting unit (e.g., cumulative on time) using the light source to produce a visually undetectable information signal. The controller is further optionally operable to adjust (e.g., increase) the electrical power supplied to the light source when the cumulative on time for the light source corresponds to a point on a lumen depreciation curve indicating a reduction in light source intensity. | 05-05-2011 |
20110115384 | METHOD OF SETTING UP A LUMINAIRE AND LUMINAIRE TO APPLY THE METHOD - A method of setting up a luminaire, said luminaire being part of a network of luminaires and each luminaire of said network of luminaires being a node of a wireless communication network, comprises, for said luminaire: receiving (S | 05-19-2011 |
20110121738 | LIGHT-EMITTING APPARATUS - A light-emitting apparatus includes a plurality of light-emitting devices which are connected in series and formed by alternately disposing electrodes and organic layers including a light-emitting material, wherein the electrodes include one electrode and another electrode disposed at an anode end and a cathode end of the light-emitting devices, respectively, and an intermediate electrode disposed between two of the organic layers which serves as a cathode of the light-emitting device disposed on a side of the anode end and as an anode of the light-emitting device disposed on a side of the cathode end; the intermediate electrode is connected to a drive circuit having two current output terminals connected in common; the drive circuit receives data signals concerning two of the plurality of light-emitting devices for which the intermediate electrode serves as the anode and the cathode, respectively; and the drive circuit outputs currents which are different in direction from each other from the two current output terminals in response to the received data signals. | 05-26-2011 |
20110127916 | SYSTEM AND METHOD FOR DRIVING LIGHT EMITTING DEVICES USING WIRELESS COMMUNICATION MODULE - Disclosed herein is a system for driving light emitting devices. The system for driving light emitting devices includes a main light emitting device and at least one sub-light emitting device. The main light emitting device includes a first communication unit for exchanging information with a central monitoring server and a close sub-light emitting device using a wireless communication module, a first light emitting unit having at least one light emitting element, and a first control unit for controlling the light emission of the first light emitting unit, and transmitting a command signal for controlling the sub-light emitting device to the sub-light emitting device. The sub-light emitting device includes a second communication unit for exchanging information with the main light emitting device, a second light emitting unit having at least one light emitting element, and a second control unit for controlling the light emission of the second light emitting unit. | 06-02-2011 |
20110140611 | DIMMING BRIDGE MODULE - 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. | 06-16-2011 |
20110156593 | BOOSTING DRIVER CIRCUIT FOR LIGHT-EMITTING DIODES - Various embodiments relate to an light-emitting diode (LED) driver and related method that drives various LEDs in an LED string beyond their isolated nominal luminance. Individual LEDs in an LED string may be thermally dependent so that specific LEDs may operate at higher temperatures without degradation. This may include driving specific LEDs beyond isolated nominal luminance when associated LEDs dim below their isolated nominal luminance. Such operation allows the LED to receive higher amounts of current and therefore exhibit higher luminous intensity. A control circuit may monitor the forward voltage and temperature in a feedback loop to ensure that the LEDs in the string are operating below a defined maximum junction temperature. The control circuit may signal a processing unit to adjust adjacent circuits to compensate when the controlled LEDs cannot produce a requested luminance without operating beyond a maximum junction temperature. | 06-30-2011 |
20110156594 | LIGHT EMITTING DIODE ILLUMINATING SYSTEM AND CONTROL METHOD THEREOF - A light emitting diode (LED) illuminating system includes a LED illuminating circuitry, which includes a plurality of LEDs connected in parallel, and an actuator connected to the LED illuminating circuitry to actuate the plurality of LEDs. The actuator includes a sensor and a control circuitry, which includes a controller connected to the actuator. The sensor is configured to detect an output signal of the actuator and to output the detected data value to the controller. The controller is configured to compare the detected data value with a predetermined data value, and to output a scan signal to the actuator when a LED is found to be malfunctioning. The actuator is configured to scan each LED and to output a location parameter of the malfunctioning LED to the controller based on the scan signal. A method for controlling the LED lighting system is also provided. | 06-30-2011 |
20110175533 | DISTRIBUTED ILLUMINATION SYSTEM - The present invention introduces a new class of lightweight tile-based illumination systems for uses wherein thin directionally-illuminating light distributing engines are embedded into the body of otherwise standard building materials like conventional ceiling tiles along with associated means of electrical control and electrical power interconnection. As a new class of composite light emitting ceiling materials, the present invention enables a lighter weight more flexibly distributed overhead lighting system alternatives for commercial office buildings and residential housing without changing the existing materials. One or more spot lighting, task lighting, flood lighting and wall washing elements having cross-sectional thickness matched to that of the building material or tile into which they are embedded, are contained and interconnected within the material body's cross-section. Embedded power control devices interconnected to each lighting element in the distributed system communicate with a central switching center that thereby controls each light-emitting element in the system. | 07-21-2011 |
20110187271 | LUMINARY CONTROL SYSTEMS - A system and method for detecting light fixture failure and for enhancing energy efficient operation of multiple light fixtures. The system includes multiple light control modules and a gateway. The light control modules alert the gateway of a bulb or ballast failure based on light fixture power consumption. The light control module can indicate a sudden failure, a slow failure, a striating failure, a stuck relay failure and a start-up failure. The light control modules can include a photo-sensor and an occupancy sensor for measuring brightness and occupancy, respectively, in the vicinity of one or more light fixtures. The gateway can distribute operating instructions to the light control modules based on changes in the ambient temperature and based on the power consumption of nearby light fixtures. | 08-04-2011 |
20110221348 | SYSTEM AND METHOD FOR CONTROLLING LIGHTING - Disclosed herein are a system and a method for controlling lighting. In the lighting control system, one or more lighting devices are installed in a separate area within a building and a remote controller generates a scheduling data by setting lighting scenes at each time and controls the lighting of the corresponding lighting device via a short range wireless communication. In addition, the remote controller transmits the scheduling data to a remote server through a gateway and when the remote controller is not normally operated, the remote server controls the lighting device according to the scheduling data through the gateway. | 09-15-2011 |
20110234105 | AUTOMATIC METHOD TO DETECT SHORT AND OPEN CONDITIONS ON THE OUTPUTS OF A LED DRIVER DEVICE - 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. | 09-29-2011 |
20110241551 | Apparatus and method for controlling LED light strings - 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. | 10-06-2011 |
20120068607 | SUPERVISION FOR A LIGHT DISPLAY DEVICE - 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. | 03-22-2012 |
20120086342 | Discharge Tube Lighting Device And Abnormal Discharge Detecting Method In The Same - 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. | 04-12-2012 |
20120091895 | AUTOMATICALLY CONFIGURING OF A LIGHTING - 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 ( | 04-19-2012 |
20120098435 | Channel Detection Device - 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. | 04-26-2012 |
20120161641 | SAFETY FLASHING DETECTOR FOR TRAFFIC LAMPS - 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. | 06-28-2012 |
20120161642 | LIGHTING CONTROL METHOD AND DEVICE - 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. | 06-28-2012 |
20120181934 | LIGHT GUIDING SYSTEM AND A METHOD FOR CONTROLLING THE SAME - 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 ( | 07-19-2012 |
20120194080 | ILLUMINATION DEVICE - 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. | 08-02-2012 |
20120235571 | MULTI-LAMP DRIVING SYSTEM - 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. The duty cycle regulating circuit regulates duty cycles of the PWM signals upon the condition that the current fluctuates and the multi-lamp driving system is in the frequency scanning process. | 09-20-2012 |
20120235572 | ILLUMINATION BEACON - 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. | 09-20-2012 |
20120262069 | APPARATUS AND METHOD OF ENERGY EFFICIENT ILLUMINATION USING RECEIVED SIGNALS - 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. | 10-18-2012 |
20120262070 | LIGHT EMITTING ELEMENT DRIVE DEVICE - 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. | 10-18-2012 |
20120268013 | DYNAMIC-HEADROOM LED POWER SUPPLY - 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. | 10-25-2012 |
20120293074 | Method and System for Determining Signal State - 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. | 11-22-2012 |
20120319590 | ANALOG LED CONTROLLER - 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 1N and N=a total number of the color LED control circuits. | 12-20-2012 |
20130002140 | LAMP FAILURE DETECTOR - 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. | 01-03-2013 |
20130057156 | LIGHT EMITTING DIODE (LED) SYSTEM HAVING LIGHTING DEVICE AND WIRELESS CONTROL SYSTEM - 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). | 03-07-2013 |
20130082604 | Low Cost LED Driver With Integral Dimming Capability - 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. | 04-04-2013 |
20130082605 | WIRELESS INTELLIGENT LAMP CONTROL METHOD AND SYSTEM, WALL SWITCH BASE, AND REMOTE SWITCH HANDSET - 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. | 04-04-2013 |
20130088152 | DIMMING APPARATUS FOR SOLID STATE LIGHTING FIXTURES - 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. | 04-11-2013 |
20130093328 | LIGHT AND LIGHT SENSOR - 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. | 04-18-2013 |
20130162145 | BATTERY CHARGER WITH SENSOR-ACTIVATED LIGHT SOURCE - 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. | 06-27-2013 |
20130193853 | LIGHT EMITTING SYSTEM, LIGHT EMISSION CONTROL APPARATUS AND CONTROL METHOD THEREFOR, COMMUNICATION SYSTEM AND CONTROL METHOD THEREFOR AND STORAGE MEDIUM - 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. | 08-01-2013 |
20130214686 | MONITORING DEVICE FOR MONITORING BRIGHTNESS OF DISPLAY - 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. | 08-22-2013 |
20130221851 | Sensorless LED Light Detection - 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. | 08-29-2013 |
20130264945 | LIGHT EMITTING DIODE DRIVER WITH OVERLOAD PROTECTION AND INDICATION WITH REDUNDANCY - 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. | 10-10-2013 |
20130285556 | POLICY-BASED OLN LIGHT MANAGEMENT SYSTEM - A policy-based OLN (outdoor lighting network) light management system including a central control apparatus ( | 10-31-2013 |
20130300296 | LED FLASH LIGHT AND METHOD FOR INDICATING NEAR-END-OF-LIFE STATUS OF SUCH AN LED FLASH LIGHT - 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. | 11-14-2013 |
20140028196 | LIGHTING DEVICE, LIGHTING APPARATUS USING THE SAME, AND LIGHTING SYSTEM - A control unit controls an operation of an electric power conversion unit so that load current that flows through a light source load becomes a constant value, using electric power setting value that is used to determine a size of electric power that is supplied to the light source load and a current detection value that is detected by a current detection resistor (current detection unit), and a load electric power calculation unit obtains load electric power of the light source load using the electric power setting value and a voltage detection value that is detected by a voltage detection unit, and an input electric power estimation unit corrects a circuit loss for the obtained load electric power and estimates input electric power. | 01-30-2014 |
20140035464 | CONTROLLING AN EVENT BEHAVIOR OF AN ILLUMINATION INTERFACE FOR A NETWORK DEVICE - A network device includes an LED interface that exhibits behaviors corresponding to detected events. In a first mode, at least one from a set of predefined event behaviors are selected for the LED interface. The behaviors are responsive to pre-programmed criteria. In a second mode, a new event behavior is implemented for the LED interface in response to criteria not included in the pre-set criteria. | 02-06-2014 |
20140159585 | LUMINAIRE WITH SWITCH-MODE CONVERTER POWER MONITORING - The power consumption of a switch-mode power converter can be determined based upon at least one of a converter drive signal pulse width or a converter drive signal frequency. Such power consumption can be determined using an algorithm providing a functional relationship between switch-mode power converter power consumption and at least converter drive signal pulse width or frequency. Such algorithms can be either calculated using known component values or empirically determined. Such power consumption may also be determined using store power consumption data in a data store that is indexed by at least one of the converter drive signal pulse width or frequency. | 06-12-2014 |
20140175985 | Method and Apparatus for Multiple Sensor Lighting Control Systems for Daylight Harvesting - A multi-sensor lighting control system includes at least two light sensors. Each sensor gathers light from different sources, by comparing and contrasting the output signals from the two sensors, the controller can automate many lighting control and commissioning processes leading to easier, simpler installations and maintenance and happier customers, and removing the need for special tools. Applying automated closed loop lamp warm-up techniques, the daylight ratio and the maximum electric light contribution can be learned automatically by the system. A multi-sensor lighting control system may also provide intermediate zones of lighting control between adjacent task areas with different lighting requirements. | 06-26-2014 |
20140197744 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF TESTING THE SAME - Provided is an organic light emitting display device including: a display unit including a plurality of pixels, each pixel of the pixels including an organic light emitting diode; and a test circuit configured to apply a first signal and a second signal to the display unit and to receive a third signal from the display unit. The test circuit is configured to determine whether or not the display unit is in a normal state based on a voltage level of the third signal when the first and second signals have a first level. | 07-17-2014 |
20140239815 | METHOD AND SYSTEM FOR CONTROLLING LIGHTING OPERATION - The invention provides a method and system for controlling a streetlight lighting operation. The system includes a plurality of streetlights, pole controllers associated with one or more streetlights and segment controller for a set of streetlights. The segment controller is configured to generate control signals based on control criterion that are translated as commands to the pole controllers to operate the streetlights. The operation of streetlights includes switching on, switching off or dimming of the streetlights. The method described herein also includes receiving feedback from the pole controllers that is useful for monitoring and maintenance operations. | 08-28-2014 |
20140239816 | LIGHTING CONTROL SYSTEM AND METHOD FOR CONTROLLING THE SAME - Lighting control systems and a method of control the same are provided. For example, the lighting control system includes at least one lighting device transmitting and receiving a wireless communication signal and controlled by a received wireless communication signal, a lighting device authentication code including unique identification information assigned to the lighting device, and a user terminal having an image recognition unit, the user terminal configured to recognize the lighting device authentication code using the image recognition unit, extract the unique identification information from the lighting device authentication code recognized by the image recognition unit, pair the user terminal with the lighting device based on the extracted unique identification information, and control the at least one lighting device. | 08-28-2014 |
20140300275 | Control Device for Providing A Visual Indication of Energy Savings and Usage Information - A dimmer switch for controlling the amount of power delivered to and thus the intensity of a lighting load comprises a visual display operable to provide a visual indication representative of energy savings and usage information. The dimmer switch comprises an intensity adjustment actuator, such as a slider knob or a rotary knob, which may be coupled to a potentiometer for adjusting the amount of power delivered to the lighting load. The potentiometer may comprise a dual potentiometer including a resistive element and a conductive element having a cut. The visual display may comprise a single visual indicator, which may be illuminated a first color, such as green, when the intensity of the lighting load is less than or equal to the eco-level intensity, and illuminated a second different color, such as red, when the intensity of the lighting load is greater than the eco-level intensity. | 10-09-2014 |
20140320019 | METHOD AND SYSTEM FOR LIGHT ARRAY THERMAL SLOPE DETECTION - A system and method for operating one or more light emitting devices is disclosed. In one example, the light emitting devices may be deactivated in response to a rate of temperature rise of the light emitting devices. | 10-30-2014 |
20150022090 | FOLDABLE DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME - A foldable display apparatus, a method of manufacturing the same, and a controlling method of the same are disclosed. The foldable display apparatus includes a substrate including a metal thin film and an insulating layer provided on the metal thin film, an organic light-emitting unit formed on the substrate and emitting light in an direction away from the substrate, and a thin film encapsulating layer for encapsulating the organic light-emitting unit. The foldable display apparatus may be folded in a direction such that the metal thin film is exposed. | 01-22-2015 |
20150069915 | METHOD FOR CONTROLLING COMMUNICATIONS TERMINAL AND PROGRAM - A method for controlling a communications terminal is provided. The method includes causing a computer included in the communications terminal to store first illumination setting information and second illumination setting information in the memory; causing the computer of the communications terminal to transmit, at a certain illumination start time at which the illumination device is to be turned on, a first control signal corresponding to the first illumination setting information to the illumination device such that the illumination device is set to the first illumination state; and causing the computer of the communications terminal to transmit, in a case where the sensor senses a motion of the communications terminal after the certain illumination start time has passed, a second control signal corresponding to the second illumination setting information to the illumination device such that the illumination device is set to the second illumination state. | 03-12-2015 |
20150123545 | BEHAVIOR MANAGEMENT SYSTEM - A behavior management system includes a lighting system formed of a light source, a first detector, a second detector, a controller, a storage device and an output device. The light source is configured to light a display space for displaying articles and a passage space facing the display space. The first detector is configured to detect human presence or absence in the passage space. The second detector is configured to detect whether a human passes through or stops in the passage space. The controller is configured to control the light source based on detection results by the first and second detectors. The storage device is configured to store histories of detection results by the first and second detectors. The output device is configured to supply an external management device with histories of detection results by the first and second detectors stored in the storage device. | 05-07-2015 |
20150351173 | DEVICE FOR OPERATING LEDS - The invention relates to a device for operating LEDs, comprising a driver module and an LED module ( | 12-03-2015 |
20160066391 | ANTI-TAMPERING DAYLIGHT HARVESTING SYSTEM - The present invention relates to a method for controlling a lighting device in a daylight harvesting system. When a user tampers with a sensor, in order to decrease the light level light level measured and therefore increase the light intensity of the lighting device, the tampering is detected. Based on this tamper detection the light intensity of the lighting device is controlled based on a set value (e.g. 70% dimming). | 03-03-2016 |
20160066398 | DECISION SUPPORT SYSTEM FOR A LIGHTING NETWORK - A decision support unit for an outdoor lighting network ( | 03-03-2016 |
20160095173 | CONTROL MECHANISM AND METHOD USING RGB LIGHT EMITTING DIODES - A control mechanism and method using RGB (red-green-blue) light emitting diodes (LEDs) are disclosed. A particular embodiment includes: a red-green-blue (RGB) light emitting diode (LED) having a plurality of color components, each color component being either active or inactive; and an input controller coupled to each of the plurality of color components to determine a voltage level thereon, the input controller being configured to detect a voltage change in an inactive color component when light from an active color component is reflected off of a proximate object. | 03-31-2016 |
20160174325 | ILLUMINATION SYSTEM | 06-16-2016 |
20160174346 | LIGHTING CONTROL SYSTEM, TERMINAL, AND LIGHTING CONTROL METHOD THEREOF | 06-16-2016 |
20160174349 | WALLMOUNT DUAL BEAM SENSING DEVICE | 06-16-2016 |
20160198547 | INTELLIGENT LIGHT CONTROL SYSTEM AND LIGHT SWITCH APPARATUS WITH FUNCTION OF POWER METER | 07-07-2016 |
20160205747 | SYSTEM COMPRISING A CONTROLLING DEVICE AND A CONTROLLED DEVICE | 07-14-2016 |
20160205748 | Lighting Control Via A Mobile Computing Device | 07-14-2016 |
20170238387 | Hybrid Closed Loop Daylight Harvesting Control | 08-17-2017 |
20190150242 | Light and Light Sensor | 05-16-2019 |
20190150250 | LIGHTING SYSTEM, METHOD FOR TRANSMITTING SCHEDULE INFORMATION IN LIGHTING SYSTEM, AND OPERATION TERMINAL | 05-16-2019 |
20190150253 | Digital Addressable Lighting Interface Configuration | 05-16-2019 |