Abstract: An LED lamp includes an elongated housing, LED arrays, a rechargeable battery, a controller circuit, two drivers, a charging circuit, and a battery backup user interface. The first driver converts an external power to drive the LED array whereas the second driver draws power from the rechargeable battery to drive the LED arrays during power outage. The charging circuit charges the rechargeable battery during normal operation. The battery backup user interface includes a battery charging indicator indicating the charging status of the rechargeable battery. The battery backup user interface also includes a battery shutoff switch configured to allow a user to enable or disable the rechargeable battery. In some cases, the battery backup user interface further includes a test button configured to allow the user to trigger a test of the rechargeable battery.

Abstract: The present disclosure provides a dummy load control circuit and a lighting device. The dummy load control circuit and a dummy load module are connected in parallel with a power supply input end and the dummy load control circuit includes a first switch circuit having a first switch control module so the first switch is controlled to be turned off when the power supply input end is connected to a triac dimmer, and turned on when the power supply input end is not connected to the triac dimmer, a second switch circuit having a second switch control module controlling on/off of the second switch, and a constant voltage source providing a constant voltage so the dummy load module is turned on when the first switch and the second switch are turned off, and turned off when the first switch and/or the second switch are turned on.

Abstract: A light emitting diode (LED) control device includes a power supply connected to a first driving node and a second driving node through which an LED driver is configured to supply power to an LED module including a first LED string and a second LED string, a square wave generator that generates a square wave, a duty ratio controller that outputs a control signal based on the square wave, and change a slope of the control signal based on a change in a time constant, and a switch circuit configured to control a ratio of a first current applied to the first LED string and a second current applied to the second LED string based on a change in the slope of the control signal.

Abstract: In an example implementation according to aspects of the present disclosure, a display panel is described including a set of high color gamut light emitting diodes (LEDs), a set of narrow color gamut LEDs, a light guide plate wherein the set of high color gamut LEDs alternate positions with the set of narrow color gamut LEDs, and a switch to toggle between the sets of LEDs.

Abstract: A method of controlling a dual-wound synchronous machine includes: determining positive and negative virtual half-motor current commands based on first and a second motor current commands associated with the first and second winding sets; calculating positive and negative final voltage commands based on the virtual half-motor current commands, and using first and second sets of gain factors; and commanding, based on the final voltage commands, inverters to apply an output voltage to each of two winding sets and thereby causing output currents to be generated herein. The output currents each have a d- and q-axis components, and at least one of the first set of gain factors and the second set of gain factors is configured to cause the d-axis component and the q-axis component of the first output current to be decoupled from variations of d-axis and q-axis components of the second output current.

Abstract: There are provided an apparatus registration method capable of efficiently associating specific information about apparatuses and arrangement information about the apparatuses stored in an operation terminal, a program for implementing the method, and an apparatus system. A method for registration of luminaires associates a plurality of luminaires with items of arrangement information about the luminaires stored in an operation terminal for operating the luminaires.

Abstract: Devices, systems, and methods for operating a building management system using a lighting control interface are described herein. One device includes an occupancy sensing component, a lighting control interface configured to connect the occupancy sensing device to a lighting control channel of a building, and a building management system (BMS) interface configured to connect the occupancy sensing device to a BMS channel of the building.

Abstract: A method for driving one or more electrically powered light sources, such as LED modules, may include applying a pulse-width-modulated signal thereto having a pulse-repetition frequency and a duty-cycle, the duty-cycle being selectively variable in order to vary the intensity of light emitted by the light source or light sources. To counter the occurrence of temporal light artefacts, or TLAs, the method may include frequency modulating the pulse-width-modulated signal (VPWM) by varying the pulse-repetition frequency thereof around a certain value between a lower frequency value and a higher frequency value, thus giving rise to a signal with combined FM/PWM modulation.

Abstract: In one aspect, a method for controlling lighting is provided. In one embodiment, the method includes setting an initial setting for lighting characteristics for light emitted by lighting devices; and recording user adjustments to the lighting characteristic from the initial setting as user data. The method further includes analysis of the user data with a remote light setting computing system to determine a lighting model for providing a predictive light characteristic light setting in response to an environment factor based input; and inputting environmental factors into the model produced by the remote light setting computing system to provide a predictive light characteristic setting. Light being emitted from the light emitting devices is then adjusted to the predictive light characteristics using a local controller in response to a user lighting request.

Abstract: A system can configure a luminaire for providing illumination of a selected color temperature, a selected lumen output, or a selected photometric distribution. The luminaire can comprise at least two light sources that have different illumination characteristics, for example different color temperatures, different lumen outputs, or different photometric distributions. The system can configure the luminaire to operate a first of the two light sources, a second of the two light sources, or both of the light sources based on an input. When the luminaire is configured to operate both of the light sources, the luminaire can produce illumination having a color temperature, a lumen output, or a photometric distribution that is different than either of the two light sources.

Abstract: A power converter can include: a rectifier circuit; a silicon controlled dimmer coupled between an AC input terminal and an input terminal of the rectifier circuit; and a bleeder circuit coupled to an output terminal of the rectifier circuit, and being configured to provide a bleeder current after the silicon controlled dimmer is turned off. A method of controlling a power converter, can include: generating a bleeder current flowing though output terminals of a rectifier circuit of the power converter after a silicon controlled dimmer is turned off; and where the silicon controlled dimmer coupled to the rectifier circuit receives an AC input voltage.

Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a data memory and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and test results stored and integrated in the data memory. The LED luminaire further comprises a remote controller configured to initiate control signals with phase-shift keying (PSK) signals transmitted and to collect test data to and from the node MODEM. The node MODEM is configured to demodulate the PSK signals and to send commands to the self-diagnostic circuit to request responses accordingly.

Abstract: According to one embodiment, a lighting apparatus includes light sources, each light source emitting a different electromagnetic radiation having a different color temperature when turned ON. A controller turns ON and OFF each light source such that each electromagnetic radiation of each light source comprises a series of pulses. The controller alternate between turning ON each of the light sources with a speed sufficient to cause a perception of mixing the electromagnetic radiations of the light sources, thereby causing an appearance of a perceived light having a perceived color temperature different from the color temperatures of the light sources. To ensure that only one of the light sources is ON at a time, the controller waits a predetermined time between turning OFF a light source and turning ON a subsequent light source. The predetermined time is based on both a time for a light source of the plurality of light sources to turn OFF and a variable buffer time.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a clock and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and each of test results sent to a remote control unit that comprises a data-centric circuitry comprising a variety of data communication devices configured to initiate command data with phase-shift keying (PSK) signals transmitted via a principal MODEM and to periodically collect each of test data to and from the node MODEM. The test data assembled are ultimately transferred to a root server for further reviews.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a rechargeable battery with a terminal voltage, a self-diagnostic circuit, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a rechargeable battery test is initiated. The self-diagnostic circuit comprises a clock and is configured to initiate self-diagnostic tests and to auto-evaluate battery performance according to test schedules with the terminal voltage examined and test results stored. The LED luminaire further comprises a remote controller configured to initiate control signals with phase-shift keying (PSK) signals transmitted and to collect test data to and from the node MODEM. The node MODEM is configured to demodulate the PSK signals and to send commands to the self-diagnostic circuit to request responses accordingly.

Abstract: A light-emitting diode (LED) luminaire controller comprising a transceiver circuit, a power converter circuit, and a control circuit is adopted to convert remote control signals into a pulse-width modulation (PWM) signal and a controllable DC voltage to operate an external LED luminaire by turning it on and off and controlling its luminous intensity. The LED luminaire controller further comprises a remote controller. When the remote control signals are initiated by the remote controller with phase-shift keying (PSK) signals transmitted, the transceiver circuit can demodulate such PSK signals and subsequently send the PWM signal, the controllable DC voltage, and a metering command to the control circuit to request responses accordingly.

Abstract: A light-emitting diode (LED) luminaire comprises an emergency-operated portion comprising a battery, a self-diagnostic circuit comprising a test portion configured to auto-evaluate battery performance, a first controller, and a node modulator-demodulator (MODEM). The LED luminaire can auto-switch from a normal power to an emergency power according to availability of the normal power and whether a battery test is initiated. The first controller is configured to communicate between the test portion and the node MODEM, ensuring command data and test data respectively to be transferred to the self-diagnostic circuit and to a remote control unit that comprises a data-centric circuitry comprising a variety of data communication devices configured to initiate the command data with phase-shift keying (PSK) signals transmitted via a principal MODEM and to periodically collect the test data to and from the node MODEM. The test data assembled are ultimately transferred to a root server for further reviews.

Abstract: An automated dimming load controller automatically measures the relationship between the current draw and the dimmer setting for each light or group of lights connected to the load controller. Once measured, the relationship between the current draw and the dimmer setting can be used to enable the dimmer controller to adjust the lights between their minimum and maximum effective illumination. This automatic setting of the dimmer controller may be performed regularly to accommodate changes in performance or replacement of any of the connected lights, drivers or ballasts.

Abstract: System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.

Abstract: An image forming apparatus includes a fixing device, control circuitry, and a controller. The fixing device includes a first rotating body, a second rotating body in pressure contact with the first rotating body, and a heat source to heat the first rotating body. The circuitry, at startup of the fixing device, causes the fixing device to perform a rotating operation to rotate the first rotating body while causing the heat source to perform a heating operation to heat the first rotating body, thereby performing a fixing startup operation to raise a temperature of the first rotating body. The circuitry delays at least one of a timing for start of the rotating operation and a timing for start of the heating operation to be later than a start of a controller startup operation such that the fixing startup operation is completed in time with completion of the controller startup operation.

Abstract: System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.

Abstract: A dimmer, including a housing assembly including a plurality of terminals at least partially disposed therein, the plurality of terminals including a line terminal, a neutral terminal, and a load terminal; at least one variable control mechanism coupled to the housing assembly, the at least one variable control mechanism being configured to adjustably select a user adjustable load setting, the user adjustable load setting being adjustable between a minimum setting and a maximum setting; a series pass element disposed in series the line terminal and the load terminal; a sensor producing a sensor output representative of load current at the load terminal; and a controller configured to determine, according to a characteristic of the load current, whether a load connected to the load terminal is a capacitive load, wherein the controller is further configured to, upon determining that the load is a capacitive load, provide sufficient power to the load sufficient to cause the load to illuminate before reducing the

Abstract: A switch-mode power supply controller controls a circuit that includes a flyback-based, switch-mode power supply in the context of an input voltage source, a USB Type-C PD controller and an output load. The switch-mode power supply controller may be configured to estimate input voltage based on a measured magnetizing inductance discharge time. Furthermore, the switch-mode power supply controller may be configured to estimate output voltage based on the measured magnetizing inductance discharge time and the estimated input voltage. Still further, the estimated voltages may be used by the switch-mode power supply controller to limit certain currents and optimize power efficiency. Even further, the estimated and measured value may be employed by the switch-mode power supply controller to estimate and indicate brownout conditions.

Abstract: A light-emitting diode (LED) luminaire comprising LED arrays, a transceiver circuit, a voltage converter circuit, and a control circuit is adopted to convert remote control signals into PWM signals to operate the voltage converter circuit, controlling luminous intensity and color temperature of the LED luminaire. The LED luminaire further comprises a remote controller. When the remote control signals are initiated by the remote controller with phase-shift keying (PSK) signals transmitted, the transceiver circuit can demodulate such PSK signals and subsequently send the PWM signals responsive to decoded commands to control the voltage converter circuit to turn the LED arrays on and off, to tune the LED arrays up and down, and to dim the LED arrays up and down.

Abstract: A control device including a CPU is provided. The CPU divides a plurality of pulses into first and second groups, and creates a schedule in which on-timing and off-timing of the plurality of pulses are designated such that off-timing of a first pulse among the plurality of pulses and on-timing of a second pulse among the plurality of pulses are simultaneous with each other. The CPU sets in a timer for counting time, time from a time point where the timer finishes counting the time already set to on-timing or off-timing of a pulse to be first turned on or off after the time point in accordance with the schedule. Further, the CPU turns on or off the pulse in accordance with the schedule when the timer finishes counting the set time.

Abstract: System and method for dimming control of one or more light emitting diodes. An example system includes one or more signal processing components configured to receive a first signal associated with a TRIAC dimmer, process information associated with the first signal, determine whether the TRIAC dimmer is in a first condition or a second condition, generate a second signal based on at least information associated with the first signal, and send the second signal to a switch. The one or more signal processing components are further configured to, if the TRIAC dimmer is determined to be in the first condition, generate the second signal to cause the switch to be opened and closed corresponding to a modulation frequency.

Abstract: A light emitting diode array module includes a plurality of light emitting diode structures. The light emitting diode structures are arranged such that there is an optical cross talk between the light emitting diode structures during operation of the light emitting diode array module. At least a first light emitting diode structure of the plurality of light emitting diode structures is characterized by a first color. At least a second light emitting diode structure of the plurality of light emitting diode structures is characterized by a second color different than the first color. The first color, the second color, and the optical cross talk between the light emitting diodes are arranged to provide a predefined light distribution in a reference plane perpendicular to an optical axis of the light emitting diode array module. A lighting device can include one or more LED array modules.

Abstract: A five color temperature switching circuit includes a power supply, an LED driver, a first LED light, a second LED light, a third LED light, a first diode, a second diode, a third diode, a fourth diode, and a switch. The switch has twelve connecting ports. The switch has five regulating stages corresponding to the twelve connecting ports. Thus, the five color temperature switching circuit is provided with three LED lights with three different color temperature values, four diodes, and the switch, such that the lamp provides an illuminating function with five color temperature values.

Abstract: A method for displaying an image includes: acquiring a current total lighting duration of a display device, the current total lighting duration being a current value of a cumulative lighting duration of the display device from a first time the device is lit up; determining a first compensation voltage corresponding to the current total lighting duration of the display device according to a pre-stored corresponding relationship between a total lighting duration and a compensation voltage, the compensation voltage including a compensation sub-voltage corresponding to each color channel of the display device; and adjusting a driving voltage of each pixel of the display device based on the first compensation voltage during display of the image by the display device.

Abstract: According to one embodiment, an image forming apparatus includes a first heating unit, a second heating unit, and a print controller. The first heating unit includes a first heat source that generates heat with alternating current power. The second heating unit includes a second heat source that generates heat with direct current power. The print controller is configured to control printing using either the first heating unit or the second heating unit.

Abstract: A wearable device may monitor one or more parameters of a wearer and enter an emergency state based on the values of the monitored parameters. When in the emergency state, the wearable device may connect to a low-power wide area network and transmit an alert to a remote monitoring location.

Abstract: A lightbulb comprising a bulb portion (10) in which is housed an illuminating component configured to selectively emit visible light, the lightbulb having a cap portion (16) configured to mount the lightbulb in a light fitting or lamp holder, the cap portion incorporating a adaptor element configured to selectively alter the configuration of the cap portion between a screw fitting and a bayonet fitting.

Abstract: The invention relates to a lamp dimming circuit with electricity leakage preventing function, includes a power module, a PWM signal conversion module, an optocoupler, an analog signal conversion module, and a controller and a voltage conversion module for connecting the illuminator. By adding the PWM signal conversion module, optocoupler and analog signal conversion module, the external dimming input signals in turn converted into PWM modulation signal, optical signal and analog voltage signal, and transferring the converted analog voltage signal to the controller for processing, and the controller sends the processed signal to the voltage conversion module for processing. Since the voltage signal entering the optocoupler is transmitted in the form of light, and there is no Y capacitor crossover between the power line and the dimming line.

Abstract: An adapter that provides a remote control capability for a light switch is mounted on a support structure (e.g. a wall), and includes a base plate which is also mounted on the support structure to surround the ON/OFF mechanism of the light switch. A cover which can be selectively attached to the base plate establishes an enclosed space between the base plate and the cover. A connector is mounted on the adapter in the enclosed space to interact mechanically with the ON/OFF mechanism of the light switch. The connector also interacts electronically with an activator that is positioned at a remote location. In operation, the connector at the adapter is responsive to an input signal from the remotely located activator that will operate the ON/OFF mechanism. Alternatively, the ON/OFF mechanism can be disconnected from the activator and operated manually.

Abstract: A method of performing a diffused light color temperature switching control for an LED lamp includes using at least a first LED lighting load emitting a first color temperature light and at least a second LED lighting load emitting a second color temperature light, using a light diffuser covering the first LED lighting load and the second LED lighting load to create a diffused light with a diffused light color temperature, using a power allocation circuitry working with a power allocation algorithm to manage different electric powers respectively delivered to at least the first LED lighting load and at least the second LED lighting load while keeping a total electric power unchanged to generate diffused lights with different diffused light color temperatures.

Abstract: An apparatus can include: a bleeder circuit coupled to a DC bus of an LED driver having a silicon-controlled dimmer; the bleeder circuit being configured to control a voltage of the DC bus to vary in a predetermined manner by drawing a bleed current through a bleed path when in a first mode, and to cut off the bleed path when in a second mode; and a controller configured to control the bleeder circuit to be in the first mode before the silicon-controlled dimmer is turned on.

Abstract: The invention relates to an LED module (1), comprising: connections (2) for an LED series (3); a circuit (4), which is designed to constitute a load, preferably an active-power load, when a first supply voltage (5a) not equal to zero is applied to the LED module (1), which active-power load is dimensioned in such a way that, when an LED series (3) is connected, said LED series is not conductive, and which is designed to constitute no load when a second supply voltage (5b) not equal to zero is applied to the LED module (1), for which second supply voltage, when an LED series (3) is connected, said LED series is conductive and light is emitted, wherein the type of load change is selected in dependence on the value of the first supply voltage and/or a modulation of the first supply voltage.

Abstract: A amplitude dimming power supply for constant-voltage LED lamp group comprises a maximum current signal conversion module, a DAC module electrically connected with the maximum current signal conversion module, a dimming signal output module, a signal processing module electrically connected with the dimming signal output module and the DAC module, a lamp group current sampling module, and a comparison control input module. The present invention is directed to the constant-voltage LED lamp group amplitude dimming, the dimming current is based on constant-voltage LED lamp group real-time changes. Constant-voltage LED lamp group maximum dimming current determines the duty cycle and the amplitude of the PWM signal output by the maximum current signal conversion module, so that the maximum dimming current of the amplitude dimming power of the constant-voltage LED lamp group is always equal to the total current of the current LED lamp group.

Abstract: A lighting apparatus including a light emitting diode connected to a dimmer configured to modulate an input AC voltage depending on a selected dimming level, a rectifier configured to full-wave rectify the modulated AC voltage output from the dimmer to generate and output a driving voltage, a driving module configured to receive the driving voltage of the rectifier to detect the selected dimming level, and select one of three driving modes of a stop mode, a resistance driving mode, and a sequential driving mode depending on the detected dimming level, and a plurality of light emitting diode groups configured to emit light depending on a control of the driving module.

Abstract: A phase controller includes a plurality of pulse width modulation (PWM) circuits, a plurality of switching devices, a computing unit, and a latency generator. The plurality of PWM circuits output pulse signals. The plurality of switching devices are coupled to the respective plurality of PWM circuits, and switch on and off based on the pulse signals. The computing unit calculates the pulse signals to be output from the plurality of PWM circuits, based on outputs of the plurality of switching devices. The latency generator generates latency in any of the pulse signals so that edge positions of the pulse signals output from the plurality of PWM circuits do not collide with each other, wherein the pulse signals change values at the edge positions.

Abstract: A method of controlling a correlated color temperature for light output by a lighting device including a dim-to-warm circuit having a first light channel and a second light channel. The method including determining a light control value based on the measured current value. The method further including using the light control value, determining a first current value for applying a first current to the first light channel and determining a second current value for applying a second current to the second light channel; and providing the first current to the first light channel and providing the second current to the second light channel.

Abstract: The invention provides a lighting device (100) comprising a first light source (10) and a second light source (20), a control system (50) configured to control the first light source (10) and the second light source (20), wherein the first light source (10) is configured to provide first light source light (11) having a correlated color temperature (CCT) of at maximum 3000 K and a color rendering index (CRI) of at least 75, and wherein the second light source (20) is configured to provide second light source light (21) having a dominant wavelength selected from the range of (575-780) nm and having a color rendering index of at maximum (70).

Abstract: A solid state analog device resistant to cyber security hacking is described herein. In one example, the device may include a signal input circuit, a comparator and driver circuit, and a display. The signal input circuit may be configured to detect loss of the input signal and the comparator and driver circuit may be configured to generate a voltage output and a reference power supply voltage from the input signal, wherein the comparator and driver circuit provides for a hardware-only design of the solid state analog device without digital assets, thus reducing cyber security hacking risks of the solid state analog device.

Abstract: The present invention refers to an Electrical Power System (EPS) or Power Supply for a smart dimmer for controlling the intensity of illumination of a dimmable lighting load within an electrical installation that has two or three wires in the switch box (two-wire and three-wire switches). The Power Supply is able to detect and control different types of lighting technologies, such as incandescent or LED bulbs. The Power Supply also provides a voltage signal indicating the current consumed by the lighting loads.

Abstract: A light unit driver comprising a plurality of light unit driver channels, each light unit driver channel being configured for driving a respective light unit via a respective light unit driver channel output of the light unit driver channel, —a supply rail that is connected to respective power inputs of the light unit driver channels to conduct electrical energy to the light unit driver channels, —a backup energy storage configured for storing electrical energy, —a control device for controlling the light unit driver, The backup energy storage is electrically connected to the light unit driver channel output of one of the light unit driver channels, the light units being connected to the light unit driver channel outputs of the remaining light unit driver channels.

Abstract: An interleaved power factor corrector includes a first PFC component, a second PFC component, a current sampling resistor, a current detection component, a voltage detection component, and a control component. The current detection component is configured to detect a current I1, a current I2 and a current Iin. The voltage detection component is configured to detect a voltage U1 inputted into the interleaved power factor corrector and an output voltage U2. The control component is configured to generate, according to the current I1, current I2, current Iin, voltage U1, voltage U2 and a preset target output voltage, a first PWM control signal and a second PWM control signal, in which the first PWM control signal is different from the second PWM control signal by a half of a carrier period. The interleaved power factor corrector has lower circuit cost.

Abstract: A lighting control system (LCS) for generating supply currents for at least two LED channels (CH1, CH2, CHn) comprises at least two controlled current sources for generating a supply current for a corresponding LED channel based on a corresponding control signal. The system further comprises at least two signal combiners for generating the corresponding control signals based on a synchronization signal (VSYNC) that comprises periodic starting pulses and on a combination of a magnitude dimming signal and a pulse dimming signal corresponding to one of the LED channels. The signal combiners are designed such that changes of the respective control signals come into effect only with a respective time offset with respect to one of the starting pulses of the synchronization signal.

Abstract: A smart dimming network encoder is connected to an alternating current power source having a substantially regular period of cycles. The encoder includes a bipolar switch connecting the alternating current power source to a modified alternating current line, the bipolar switch having an on state permitting the modified alternating current line to conduct alternating current from the alternating current power source and an off state preventing conduction on the modified alternating current line. The encoder includes a processor coupled to the bipolar switch, the processor configured to receive a control signal at a control signal input and to switch the bipolar switch to the off state for an off time having a duration corresponding to the control signal.

Abstract: A power supply circuitry compatible with both source type dimmer controls and sink type dimmer controls is provided. The power supply circuitry includes an internal voltage source, a dimmer control type detection circuit, and a configuration circuit. The dimmer control type detection circuit detects a type of a dimmer control that is electrically coupled to the power supply circuitry. The configuration circuit can turn off the internal voltage source upon determining the dimmer control is of the sink type and turn on the internal voltage source upon determining the dimmer control is of the source type. Thus, the internal voltage source may generate a voltage as the dimming control signal. The dimming control signal is fed to a microcontroller that may, for example, generate a series of pulse signals that is provided to a power converter of a load (e.g., light-emitting diode luminaries) based on the dimming control signal.