Abstract: A display apparatus and a controlling method thereof are provided. The display apparatus may include: a display panel that displays a screen; a light source disposed at one side of the display panel; an audio input that receives an audio signal; and a processor that flickers the light source in response to the received audio signal.

Abstract: A vehicle interior lighting device includes a light-emitting portion, a case that includes a side wall surrounding the light-emitting portion and houses the light-emitting portion, and a plate-shaped lens fixed to the case so as to cover an opening of the case and an open end of the side wall defining the opening. Light emitted from the light-emitting portion can be extracted from the entire region of a light extraction surface of the lens including an edge without being reflected.

Abstract: An LED luminaire comprises LED arrays, a full-wave rectifier, an LED driving circuit, and electric current bypass circuit(s). The full-wave rectifier is coupled to an external power-line dimmer which is coupled to the AC mains and configured to convert a phase-cut line voltage into a first DC voltage. With the electric current bypass circuit(s) to partially provide a holding current path to cause the external power-line dimmer to sustain a dimming function, the LED driving circuit can provide a second DC voltage with various driving currents according to various input power levels to drive LED arrays without flickering. By adapting switching frequencies and a duty cycle, the LED driving circuit can regulate the second DC voltage to reach a voltage level equal to or greater than a forward voltage of the LED arrays no matter whether the first DC voltage is higher or lower than the second DC voltage.

Abstract: A parallel circuit for light emitting diodes includes a first power wire, a second power wire, a first light emitting diode, a second light emitting diode, and a second impedance element. The first LED includes a first turn-on voltage, and two ends of the first LED are respectively connected to the first power wire and the second power wire. The second LED includes a second turn-on voltage, and the first turn-on voltage is different from the second turn-on voltage. The second impedance element and the second LED are connected to form a second series circuit. One end of the second series circuit is electrically connected to the first power wire, while the other end of the second series circuit is electrically connected to the second power wire. In the parallel circuit, different LEDs are respectively driven by different voltages to emit light with pre-determined brightness.

Abstract: A voltage setting value adjusting device includes a controller, a plurality of laser light sources and a voltage setting value adjusting circuit. The controller has a voltage setting value input end and a driving voltage output end. The laser light sources are coupled to the driving voltage output end, and the controller outputs a driving current to the laser light sources according to a voltage setting value. The voltage setting value adjusting circuit is coupled between the voltage setting value input end and the driving voltage output end to detect a driving voltage of the laser light sources and adjust the voltage setting value according to the driving voltage.

Abstract: The invention relates to an electronic database (101) having entries for a plurality of operating devices (151) and a plurality of lamps (152), which electronic database is searched on the basis of a query (115). The query (115) indicates a light characteristic. On the basis of the search of the electronic database (101), a combination of a selected operating device and a selected lamp is determined and an electrical operating point of the selected operating device is determined. Then, an output (116) is provided, which indicates the selected operating device, the selected lamp and the determined operating point.

Abstract: An LED driver circuit is disclosed. The LED driver circuit includes an amplifier having a first input coupled to receive a reference voltage and a second input coupled to receive a feedback voltage. The circuit further includes first and second transistors each having respective gate terminals coupled to an output of the first amplifier. In a first mode, a first switch alternately couples a source terminal of the first transistor to the second input of the amplifier (when the pulse is asserted) and a source terminal of the second transistor to the second input (when the pulse is de-asserted). A third transistor includes a gate terminal that is coupled to ground, by a second switch, when operating in the first mode. When operating in the second mode, the switch couples the third transistor to the output of the amplifier, while the pulse remains asserted.

Abstract: A lighting device arranged to be controlled via a wireless controller, wherein said lighting device comprises a light emitting load arranged for emitting light, a driver arranged for receiving a supply voltage and for driving said light emitting load based on said received supply voltage, an auxiliary supply arranged for supplying an auxiliary Direct Current, DC, supply voltage, a wireless receiver, connected to and powered by said auxiliary supply, arranged for wirelessly receiving, from said wireless controller, a control signal, and for activating said driver based on said received control signal, wherein said wireless receiver is arranged to operate according to a pulsed listen mode, said pulsed listen mode comprising active phases in which said wireless receiver is able to receive said control signal and non-active phases in which said wireless receiver is not able to receive said control signal.

Abstract: A solid state battery cell has a frame formed by a non-electrically conductive material. The frame has a frame thickness (Tf). A cell core surrounded by and entirely within the frame has a cell-core thickness (Tc). The cell core includes at least one anode, at least one cathode and at least one electrolyte between the at least one anode and the at least one cathode. At least one cell-core swell-accommodating recess is surrounded by and entirely within the frame. The at least one cell-core swell-accommodating recess defines an internal cell volume into which the cell core is expandable and from which the cell core is contractible. The cell-core thickness (Tc) is less than or equal to the frame thickness (Tf) during cell-charge and/or cell-discharge cycling.

Abstract: A light-emitting device and display equipment are disclosed. The light-emitting device includes a light-emitting unit. The light-emitting unit includes a driving transistor and a light-emitting diode. The driving transistor includes a first terminal, a second terminal and a gate terminal. The first terminal is used to receive an operation voltage. The light-emitting diode is coupled to the second terminal and used to receive a driving current. The operation voltage is variable.

Abstract: A flashlight or portable light source has a battery power source, a light source, a circuit powered by the battery power source which causes the light source to emit light in an on state, a switch which causes the circuit to alternate between the on state and an off state in which the light source does not emit light when the switch is actuated by a user, a controller for causing light emitted from the light source to emit at two or more modes other than the off state, and an automatic dimmer residing within the flashlight which causes light emitted from the light source to dim without any activation of the switch after a first preselected amount of time.

Abstract: A multilayer of light diffusers includes the light diffusers layered one on top of another, and an air layer between adjacent light diffusers. Each of the light diffusers contains a light diffusing agent in a resin matrix. An example of the resin matrix is an aromatic polycarbonate, and an example of the light diffusing agent is a silicone-based diffusing agent.

Abstract: A LED bulb contains a dimming circuit, powered and controlled by an ON-OFF light switch. The quickly done, OFF-ON is converted to a DC binary signal for the Microcontroller Embedded Firmware. Then the Bulb is put into Dimming Mode and the Microcontroller Firmware outputs a continuously pulsed signal, to the LED current control IC to set the current. This is duplicated in the Warm White LEDs to vary their brightness. The percentage ON time of the pulse gives the percentage brightness of the LEDs. A variety of dimming and brightening cycles are displayed using Microcontroller Firmware. Then turning OFF the switch will lock in the dim point. It is saved in non-volatile Microcontroller Embedded EEPROM. When OFF then wait more than 2.0 seconds and turn ON and the Bulb and it is in Normal Mode and displays the last saved dim point and operates as a regular LED Bulb.

Abstract: The present disclosure provides an intelligent lighting control system. A controller of the lighting control system causes a phase change cut to be applied to an AC power signal to signal to a light bulb apparatus connected to a luminaire a request to self identify. The encoded phase changed AC power signal is transmitted to the light bulb apparatus for a predetermined time period. A response signal received from the light bulb in response to receipt of the encoded phase changed AC power signal by the light bulb is detected at the lighting control system. A bulb identification is determined based on the response signal from the light bulb apparatus.

Abstract: In some examples, a device includes a built-in self-test for detecting a fault on a light emitting diode (LED) or on a driver for an LED. The device includes a pair of pads that are configured to connect to the LED. The built-in self-test is configured to control the driver to turn on a respective pass switch connected to a pad of the pair of pads. The built-in self-test is configured to then determine a voltage level at each pad of the pair of pads. The built-in self-test can determine whether the fault exists on the LED, across the first anode pad and the first cathode pad, or on the driver based on the voltage level at each pad.

Abstract: A tubular solid state lighting device has a pin safety circuit electrically connected to connection pins of the one end. The pin safety circuit comprises two protection components, of different types. In one set of examples, there is an electrically controlled isolation switch and an electronic switch which functions as a high voltage isolation barrier. The switch provides full galvanic contact separation, whereas the isolation barrier provides current protection if the isolation switch is not functional. In another set of examples, there is a mechanically controlled isolation switch and an electrical or electronic isolation barrier. This provides two levels of protection, but requiring only a single manual operation by the installer of the lighting device. It avoids end-of-life protection circuitry being triggered during the installation of the lighting device.

Abstract: Described implementations utilize existing power lines at a location to detect and monitor the presence, position, and/or identity of users at the location. Rather than requiring dedicated monitors within each room or position within the location, the described implementations monitor a baseline voltage signal and/or an introduced voltage signal on the ground line of an existing power line of the location to determine the presence, position, and/or identity of a user at the location, either alone or in combination with other information.

Abstract: Described herein is modular luminaire assembly which is readily assembled and installed in the field whilst providing rigidity, structural integrity and water-tightness. The assembly comprises a plurality of luminaire modules mounted on a supporting pole. The plurality of luminaire modules comprises three luminaire modules which are connected to one another by respective module connectors and to the supporting pole by module connector. Each luminaire module has at least one interface for engaging with a complementary interface of an adjacent luminaire module or the supporting pole to provide a water-tight connection, each pair of modules being fixed together by a module connector.

Abstract: Display panels with hydrogen trap layers are described. The hydrogen trap layers may be incorporated into a variety of locations to getter or block hydrogen diffusion into the semiconductor oxide layer of an oxide transistor.

Abstract: In some examples, a device includes a built-in self-test for detecting a fault between a first light emitting diode (LED) and a second LED. The device includes a first pair of pads configured to connect to the first LED and a second pair of pads configured to connect to the second LED. The built-in self-test is configured to control a first driver and a second driver to turn on, one-by-one, respective pass switches connected to the first and second pairs of pads. The built-in self-test is configured to then determine the first and second forward voltages across the first and second LEDs. The built-in self-test can determine whether the fault exists between the first and second LEDs based on the forward voltages.

Abstract: A configurable multi-output charge pump for power supply generation includes one or more flying capacitors (FCs) arranged to be switchably connected into a plurality of circuit configurations operative to provide respective output voltages at a common charging node. A configuration logic circuit is operative to generate one or more configuration setting control signals to effectuate a particular circuit configuration. One or more storage capacitors (SC) are independently and individually connectable to the common charging node depending on a selection control logic having a configurable duty cycle, wherein each SC is operative to supply a respective voltage output to drive a corresponding electrical load.

Abstract: A modular system comprising a first component comprising an LED driver and is second component comprising a light engine is described.

Abstract: A light source driving device includes: a storage unit that stores therein three or more combinations of a level indicating brightness of light emitted from a light source, and a control value used when light with brightness corresponding to the level is emitted, the control value having a nonlinear relation with the level; and a control unit that controls the light source so that the brightness of the emitted light is gradually changed to brightness corresponding to a level of a target indicated by a light control instruction signal, by calculating a level indicating the brightness of the emitted light between a level when a light control instruction signal is supplied and the level of the indicated target, by using two or more combinations for calculating the control value corresponding to the calculated level, among the stored combinations.

Abstract: A DC-DC converter includes current resonant converter units connected in parallel. The converter units include respective control devices each of which includes a control circuit, a gate-pulse generating circuit, and the like. Taking into account a relational characteristic of a switching frequency and an output voltage of each of the converter unit, a lowest frequency as a common switching frequency, from among switching frequencies with respect to a same output voltage, is shared by the control circuits. The converter units are operated with drive pulses each of which is at the common switching frequency.

Abstract: A dimmer switch includes a dimmer circuit configured to output a dimming control signal to control one or more dimmable light sources of a lighting fixture. The dimmer switch includes a power metering circuit configured to monitor power consumption of the one or more dimmable light source. The dimmer switch includes one or more control devices. The one or more control devices are configured to perform a test operation to determine a low-end trim setpoint for the dimming control signal. The one or more control devices are further configured to adjust a range of the dimming control signal based, at least in part, on the low-end trim setpoint.

Abstract: Provided is a lighting driving circuit for supplying power to a plurality of LED channels, having an input-output synchronous switch circuit synchronously connected to an input and an output of the lighting driving circuit, a rectifier circuit, a power conversion circuit, a power output having an output capacitor, and a discharge circuit connected to the switch circuit and an input end of the rectifier circuit and to the output capacitor. The plurality of LED channels are connected between the power output and the switch circuit, and the switch circuit is configured to simultaneously perform a switching operation of the power supplied to the plurality of LED channels to remove any inrush current to the LED load and send a sense signal to the discharge circuit to discharge the output capacitor.

Abstract: A light-emitting apparatus can reduce flicker and retain power efficiency. A method can include driving, by a light emitting element (LEE) driver circuit, first, second, and third LEEs using a pulse width modulation (PWM) driving scheme to generate light of a first color, the first, second, and third LEEs configured to emit different colors, alternating, by the LEE driver circuit, between driving the first, second, and third LEEs using a hybrid driving scheme and the PWM driving scheme, and after alternating between driving the first, second, and third LEEs in the hybrid and PWM driving schemes, driving, by the LEE driver circuit, the first, second, and third LEEs using the hybrid driving scheme.

Abstract: A load control device for an electrical load is configured to operate in a normal mode and a burst mode to adjust the amount of power delivered to the electrical load. The load control device comprises a control circuit that operates in the normal mode to regulate an average magnitude of a load current conducted through the load between a maximum rated current and a minimum rated current. During the normal mode, the control circuit controls the operating period of a load regulation circuit between a high-end operating period and a low-end operating period. The control circuit operates in the burst mode to regulate the average magnitude of the load current below the minimum rated current. During the burst mode, the control circuit adjusts the low-end operating period to be less than or equal to a minimum on time of the load regulation circuit.

Abstract: A controllable light source is provided that includes a load control circuit and an integrated lighting load. The controllable light source is configured to receive wirelessly communicated commands transmitted by a remote control device associated with the controllable light source, such as a rotary remote control device. The controllable light source may include an actuator for associating the controllable light source with the remote control device, such that the load control circuit is operable to adjust the intensity of the lighting load in response to wireless signals received from the remote control device. The controllable light source may support the actuator such that the actuator may be actuated when the controllable light source is installed in a fixture.

Abstract: A power supply control device includes a control unit that executes determination processing that, when an operation instruction is received from a switch input detection unit, determines, in a case in which the switch circuit is turned on, whether or not a power source voltage value will decrease to or below an acceptable voltage value on the basis of a power source voltage value obtained from a voltage detection unit and a load current value stored in a storage unit in advance; and in the determination processing, executes switch control processing which allows the switch circuit to be turned on if the power source voltage value is determined to not decrease to or below the acceptable voltage value and does not allow the switch circuit to be turned on if the power source voltage value is determined to decrease to or below the acceptable voltage value.

Abstract: A pulse arc welding device is controlled so as to alternately repeat a peak current period in which a welding current is a peak current and a base current period in which the welding current is a base current smaller than the peak current, feed a welding wire to an object at a feeding speed while the welding current flows through the welding wire, generate an arc between the welding wire and the object, and weld the object. So as to keep an arc length of the arc to be constant, in the base current period, the feeding speed is set to a first feeding speed and, in the peak current period, the feeding speed is set to a second feeding speed which is larger than the first feeding speed and corresponds to the first feeding speed. By this method, good welding quality with reduced spattering and suppressed undercut can be obtained.

Abstract: A controller for a motor includes a first processing circuit and a second processing circuit. The first processing circuit is configured to execute a first operation amount calculation process, an operation process, and an output process. The first operation amount calculation process is a process of calculating a first operation amount. The operation process is a process of operating a first drive circuit. The second processing circuit is configured to execute a second operation amount calculation process, a first use operation process, a second use operation process, and an initial value setting process. The second operation amount calculation process is a process of calculating a second operation amount. The initial value setting process is a process of setting an initial value of an integral element depending on a value of an integral element of the first operation amount calculation process.

Abstract: A state indicating device, which is adapted in an electronic device, includes a state detecting circuit, a controller, a driving circuit, and an LED device. The state detecting circuit is configured to detect an operation state of the electronic device to generate a detection signal. The controller generates a control signal according to the detection signal. The driving circuit generates a driving signal according to the control signal. The LED device displays an indication state according to the driving signal, in which the indication state is configured to indicate the operation state.

Abstract: An apparatus and method for minimizing inrush power. The method includes transmitting a load energization signal from a primary microcontroller to a logic latch or secondary microcontroller, transmitting a zero-cross voltage signal from a zero-cross sensor coupled to the load power to the logic latch or secondary microcontroller, and transmitting an energize signal from the logic latch or secondary microcontroller to a relay after the receipt of an energize signal from the primary microcontroller and after receipt of a zero-cross signal.

Abstract: An LED lighting driver has a switched mode power supply which generates an auxiliary power supply. The auxiliary power supply has a dummy load, and a control circuit for controlling the connection of the dummy load in parallel with the auxiliary load in dependence on the current drawn by the auxiliary load. In this way, a current drawn by the auxiliary load is made more stable so that effects of auxiliary supply fluctuations on the light output are reduced.

Abstract: Certain aspects involve lighting systems relating to control of light fixture output intensity and color temperature. For instance, an input device of the lighting system includes a first selector element communicatively coupled to a driver of a light-emitting diode lighting device across a power cable. The power cable provides a transmission path of power and a control signal between the input device and the driver of the light-emitting diode lighting device. The first selector element is able to control a lumen output of the light-emitting diode lighting device when in a lumen control mode and to control a correlated color temperature output of the light-emitting diode lighting device when in a correlated color temperature control mode. The input device also includes a second selector element that transitions the first selector element between the lumen control mode and the correlated color temperature control mode.

Abstract: In some embodiments, a lighting assembly including at least one light-emitting device positioned within a housing is disclosed, wherein the housing is designed to allow an ambient environment to pass into the housing and transfer heat from the at least one light-emitting device. The light-emitting area of the light-emitting device may be sealed from the ambient environment. In some embodiments, the housing may include at least one recess, port, or other opening configured to allow a liquid or gas to promote heat transfer from the light-emitting device. In some embodiments, a vehicle, a marine system, or other systems may include at least one lighting assembly as contemplated herein.

Abstract: A method and system for testing and improving a user's visual tracking skills and reaction time to a moving object includes simulating motion of an object by individually illuminating LEDs in longitudinal sequence along individually selectable paths having different positional approaches toward a target. A user activates a switch or interrupts a beam with the intent of terminating the sequence in time coincidence with illumination of a designated LED proximate the target. A microprocessor detects the time difference between illumination of the designated LED and termination of the sequence by the user as measure of the user's visual tracking and reaction time. In one embodiment the user is a baseball batter, the target is a home plate and the selectable paths are simulations of straight and breaking pitches.

Abstract: A lighting apparatus is connected to a dimmer and an external power source. The lighting apparatus includes a light source and a driver. The driver is used for converting the external power source to a driving current supplied to the light source. The driver includes a rectifier module, a constant voltage module, a control module, a constant current module, and a power module. The rectifier module is connected to the dimmer for rectifying a dimming voltage to a rectified voltage. The constant voltage module is connected to the rectifier module for providing a first constant voltage power according to the rectified voltage.

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, a wavelength converting member, a light transmissive member, an adhesive member, and a light reflective member. The wavelength converting member has an upper surface and lateral surfaces, contains a fluorescent substance, and is placed on the light emitting element. The light transmissive member covers the upper surface of the wavelength converting member. The adhesive member is interposed between the light emitting element and the wavelength converting member, and covers the lateral surfaces of the wavelength converting member. The light reflective member covers the lateral surfaces of the wavelength converting member via the adhesive member.

Abstract: System and method for regulating one or more currents. The system includes a system controller, an inductor, a first resistor, a switch and a first diode. The system controller includes a first controller terminal and a ground terminal, the system controller being configured to output a drive signal at the first controller terminal. The inductor includes a first inductor terminal and a second inductor terminal, the first inductor terminal being coupled to the ground terminal, the second inductor terminal being coupled to one or more light emitting diodes. The first resistor includes a first resistor terminal and a second resistor terminal, the first resistor terminal being coupled to the ground terminal. The switch is configured to receive the drive signal and coupled to the second resistor terminal. The first diode includes a first diode terminal and a second diode terminal and coupled to the first resistor.

Abstract: A remote control device may be configured to be mounted over the toggle actuator of a light switch and to control a load control device. The remote control device may include a base portion and a rotating portion supported by the base portion so as to be rotatable about the base portion. The remote control device may include a control circuit, a wireless communication circuit, and a rotary encoder circuit. The rotary encoder circuit may be configured to translate a force applied to the rotating portion into input signals, and to operate as an antenna of the remote control device. The rotary encoder circuit may be configured to provide the input signals to the control circuit. The control circuit may be configured to translate the one or more input signals into control signals for transmission to the load control device via the wireless communication circuit.

Abstract: The present disclosure relates to a pixel driving circuit having a pixel structure of 7T1C to compensate a threshold voltage of a driving thin film transistor (TFT) in the organic light-emitting diode (OLED). As such, the current passing through the OLED may not be related to the threshold voltage of the driving TFT. Thus, the improper image-displaying of the OLED display caused by the drifting of the threshold voltage of the driving TFT may be reduced.

Abstract: Lights sources may be installed in a facility without regard to their unique identifiers, which are necessary for a lighting control system to exercise control over the light sources. After installation, a graphical user interface (GUI) executed on a user's mobile device can facilitate the user's identification of the identifier of a particular light source located at a particular position. The GUI displays to the user a map of the facility, onto which the user can delineate the boundaries of a lighting area in which he intends to identify the location of light sources. The user then inputs into the GUI row and column dimensions for the lights positioned within the delineated lighting area. The GUI automatically generates and displays a plurality of selectable lighting positions arranged within the delineated area according to the selected dimensions, without the need for individual placement by the user.

Abstract: An LED tube with built-in driving power module is provided. Each of two ends of the LED tube has a conductive component electrically connected to mains supply. The conductive component at least includes a conductive pin assembly and a sleeve member for disposing the conductive pin assembly. The driving power module is formed by circuit boards, and the circuit boards are disposed in the sleeve member. Each of the circuit boards at least includes a functional operation unit, and the circuit boards are in series connection via one or more electrical connection members. The capacity space at both ends of the sleeve of LED tube is used to concentrate each circuit board in order to make full use of the capacity space. Meanwhile, the larger sleeve mold structure is avoided to cause the change of product appearance and increase the project development cost.

Abstract: A light emission control device includes a power source circuit for a drive circuit that supplies a power for a drive circuit based on an input power, a power source circuit for a control circuit that supplies a power for a control circuit based on the input power, a control circuit, a drive circuit, and a start control circuit. The control circuit outputs a control signal for controlling turning on/off of a switching element. The drive circuit outputs a drive signal for driving the switching element based on the control signal. The start control circuit outputs a start control signal for delaying a timing at which the output of the drive signal is started after the input power is turned on.

Abstract: Various embodiments may include a dimmer system for controlling the power consumption of a load that can be connected with parallel-connected galvanically isolated dimming channels. The dimmer system may include a plurality of dimming channels, each dimming channel including a sensor for monitoring a temperature of associated switch elements; and a control unit for each dimming channel, the control units configured to shift a respective dimming edge based at least in part on the temperature to distribute power dissipation of the connected load substantially equally across the plurality of dimming channels.

Abstract: In a first aspect, the subject invention provides a variable-intensity light emitting diode (LED) module which includes: a first LED string having first and second ends, the first end being connected to a positive voltage terminal which is connectable to a positive voltage input of a direct current voltage source; a first terminal connected to a first resistor which is connected to the second end of the first LED string; and, a second terminal connected to a second resistor which is connected to the second end of the first LED string. The first and second resistors have different resistances. A negative voltage input of the direct current voltage source is selectively connectable to one of the first and second terminals, whereby, the intensity of light generated by the first LED string is determined by which of the first and second terminals is connected to the negative voltage input.

Abstract: A lighting fixture for powering multiple LED groups to generate a selectable color temperature. The lighting fixture provides varying amounts of power to each group of LEDs to achieve a selected color temperature. Current from a driver may be divided between the LED groups based on a selected operational state, which is selected using a switch or other configurable input. The operational states may turn the LED groups on or off or may control an amount of current received by the LED groups. In some configurations, all of the LED groups are always at least partially powered.

Abstract: An apparatus and method for simultaneously adjusting brightness and color temperature, and an LED lamp. The apparatus includes a phase control dimmer, a rectification module, a phase detection module, a current control module and an LED module. Cutting the phase of an input alternating current by the phase control dimmer changes the effective voltage of the alternating current, then the cut alternating current is rectified by the rectification module and output to the LED module, thus adjusting the brightness of the LED module; information about the cut phase is detected by the phase detection module and a current control signal is output to a current control module according to the cut phase information, and the current control module controls change in the brightness ratio of mixed colors of the LED module according to the current control signal and adjusts the color temperature of the LED module.