An adapter for connection between a luminaire and a power input for powering the luminaire comprises circuitry for modulating light output of the luminaire to contain information, or circuitry for connection to a network so that signals associated with the luminaire are communicated on the network. The adapter is placed between the luminaire and a power input for the luminaire. Methods are provided for registering and establishing communication between a gateway device and a management platform, and for registering a luminaire device with the gateway so that it can be managed by the management platform. Portions of the larger system that constitutes the remote controlled lighting system are also described, including connected wall switches, sensors, and the gateways themselves.

The present invention provides a multi-load control apparatus, a slave circuit and a control method thereof. The multi-load control apparatus includes a master circuit and at least one slave circuit. The master circuit generates at least one pulse width modulation (PWM) signal according to an input signal. The slave circuit controls a power switch according to a corresponding PWM signal. The slave circuit has a primary side circuit and a secondary side circuit. The primary side circuit generates an AC PWM signal according to the corresponding PWM signal. The power switch has a control terminal which is driven according to a floating ground level which is not a constant voltage level. The power switch has a current inflow terminal and a current outflow terminal, which are connected to a corresponding load circuit in series, wherein the series circuit of the power switch and the load circuit receives an AC voltage.

A system includes a lighting unit, and a primary processor. The lighting unit includes a lighting module, and a lighting driver supplying power to the lighting module. The lighting module includes: one or more light sources, one or more sensors for sensing data indicating one or more operating parameters of the lighting module, and a secondary processor receiving the sensed data. The primary processor and the secondary processor communicate with each other according to a message-based communication protocol wherein each message communicated between the primary processor and the secondary processor has an identical message format and includes a command field and a response field wherein the response field is provided for indicating a response to a command.

Circuits for programming a circuit with decreased programming time are provided. Such circuits include a storage device such as a capacitor for storing display information and for ensuring a driving device such as a driving transistor drives a light emitting device according to the display information. To increase programming time, the pixel circuits may be pre-charged or a biasing current may be applied to charge and/or discharge a data line and/or the driving device. Aspects of the present disclosure allow for the biasing current to drain partially through the storage device to allow the portion of the biasing current applied to the driving device to remain small while the data line discharges. Furthermore, the present disclosure provides display architectures and operation schemes for display arranged in segments each including a plurality of pixel circuits.

Devices and methods for controlling brightness of a display backlight are provided. A display backlight controller may control the brightness of the display backlight by changing a duty cycle of a PWM signal that drives the LED current. However, because of LED efficacy and response time, the final output brightness (NITS) may not be linear between 0% to 100%. The disclosed methods may be used to correct the brightness using a predetermined correction factor. Further, the minimum and maximum duty cycle of the output dimming duty cycle may be limited or corrected. In one example, a backlight controller receives an input duty cycle and determines a product of the input duty cycle and a maximum duty cycle to produce a reduced duty cycle. Moreover, the backlight driver may determine a corrected duty cycle using the correction factor. The final output duty cycle and LED current may then be determined.

A power circuit for an LED lighting device including an alternative current (AC) power supply, a dimmer, a transformer and a dimming control circuit. The dimming control circuit includes a filtering unit configured to filter a voltage signal outputted from the transformer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The dimming control circuit also includes a boost converter unit configured to boost the received DC voltage to a needed DC voltage and a voltage feedback control circuit unit configured to control the DC voltage boosted by the boost converter unit. Further, the dimming control circuit includes a buck converter unit configured to convert the boosted DC voltage to the voltage and current needed by the LED lighting device and a digital control unit configured to automatically adjust current strength needed by the buck converter unit.

A wirelessly-controlled lighting device and method with an audio playing function is provided. The wirelessly-controlled lighting device includes a lighting assembly, an audio playing module, a first Bluetooth module connecting with the lighting assembly and the audio playing module and a second Bluetooth module connecting with the audio playing module. The first Bluetooth module is configured to receive a control signal from an external device, the control signal including a first control signal used to control the lighting assembly and a second control signal used to control the audio playing module. The second Bluetooth module is configured to receive audio data from the external device to transmit the audio data to the audio playing module for audio playing. The audio playing is controlled according to the second control signal received by the first Bluetooth module.

A system and method of controlling lighting schedules in a lighting control application on a computer system is disclosed. A graphical user interface is displayed to a user on a display in signal-communication with the computer system. The graphical user interface has a plurality of lighting control schedule areas. Each lighting control schedule area has an in-schedule portion and a corresponding out-of-schedule portion. One or more interface objects, corresponding to one or more lighting control devices, are associated with the in-schedule lighting control schedule of a first lighting control schedule area of the plurality of lighting control schedule areas without instructing the corresponding one or more lighting control devices to operate on said in-schedule lighting control schedule, in response to a user moving the one or more interface objects to the out-of-schedule portion of the first lighting control schedule area.

Provided is a circuit for controlling a level of brightness of a light electrically coupled to a dimming circuit including control leads configured to provide a dimming control voltage to the dimmable driver, the dimming control voltage having a permissible voltage range. The circuit includes a photo sensor for detecting an ambient light level in the vicinity of the light and a clamp controller for selectively reducing the dimming control voltage to a clamped voltage range less than the permissible voltage range. Also included is a feedback controller for adjusting the dimming control voltage in response to a detected ambient light level, the dimming control voltage being within the clamped voltage range.

The invention relates a system for determining a change in a room (1). The invention comprises in particular a self-teaching illuminating system which detects a presence of an individual in an illuminated area. The system comprises lighting means (2) which output light, control means (3) which control the luminous output from the lighting means (2), measuring means (4) which determine a luminous intensity, and an evaluation means (6) which evaluates the luminous intensity determined by the measuring means (4). The evaluation means (6) is designed to detect a change of an object/individual in the room (1), starting from a determined luminous intensity at at least one first time, at which the lighting means (2) outputs no light, and a luminous intensity at at least one second time, at which the lighting means (2) outputs light.