A lighting control apparatus (106) may include an accelerometer (118), a wireless communication interface (112), and a secure connection (125) for securing the lighting control apparatus to a surface. The secure connection may be configured to transfer motion imparted on the surface to the accelerometer. A controller (108) may be coupled with the accelerometer and the wireless communication interface. The controller may be configured to: receive, from the accelerometer, a signal representative of motion sensed by the accelerometer; determine, based on the signal from the accelerometer, that the sensed motion satisfies a motion criterion; and transmit, over the wireless communication interface to a lighting unit (104) or a lighting system bridge (102), data configured to cause one or more lighting units to emit light having one or more selected properties.

Methods, apparatus and computing devices are described herein for activatable lighting devices. In various embodiments, a composition of a lighting system may be ascertained based at least in part on a database (851, 951) of one or more lighting device records associated with one or more lighting devices (100, 600, 700, 800a, 800b, 900, 1000a, 1000b, 1000c) of the lighting system. In various embodiments, it may be determined, based on the ascertained composition, that a predetermined criterion is satisfied. In various embodiments, a communication may be issued in response to the determination. The communication may be configured to facilitate activation of a deactivated lighting device function of a lighting device associated with the lighting system.

An LED-based lighting unit (100, 200, 300, 400, 1000, 1100, 1200, 1300, 1400, 1500) may be installable into a luminaire (108, 208, 308, 408, 1008, 1108, 1208, 1308, 1408, 1508) to cause the luminaire to be responsive to applied forces and/or movements to control one or more properties of light emitted by the lighting unit. The lighting unit may include one or more LEDs (102), an accelerometer (114), and a controller (112). The controller may: receive, from the accelerometer, a signal representative of a measured mechanical force applied to or movement of the luminaire in which the LED-based lighting unit is installed; determine, based on the signal from the accelerometer, that the measured mechanical force or movement corresponds to one or more predetermined forces or movements; and energize the one or more LEDs to emit light having one or more properties selected based on the determination.

A sensing device is for sensing an operating voltage of a remote device. A communications interface receives communications signals originating from the remote device over a communications bus. A data sampler takes data readings of a communications signal at a predetermined set of timing instants defined by the sensing device. A data metric (such as a duty cycle of high and low states) is obtained from the data readings and from this 5 an operating voltage of the remote device is obtained, based on a relationship between the voltage and the data metric. The invention is based on detecting timing changes which result from voltage changes. In particular, the slope of rising and falling edges of the communications signal are influenced by the voltage level, and this in turn influences the timing of high states (1s) and low states (0s).

A display system includes a light source system including a light source array formed from multiple light source units, and used to emit a light beam, wherein the light source array can be divided into I×J sub-regions; a display unit disposed on an emergent light path of the light source system, and used to modulate a light spot on a surface thereof according to a light spot modulation signal, so as to generate image light; and a dynamic control module for obtaining the light spot modulation signal and a current modulation signal according to an image signal, dynamically updated chromaticity information and maximum brightness information of the light source units, and a correlation curve between a modulation current and brightness, wherein the current modulation signal is used to adjust the light source system.

Example embodiments relate to a node and a method of controlling devices connected to the node. In example embodiments the devices may be, but are not required to be, lights.

Example embodiments relate to a node and a method of controlling devices connected to the node. In example embodiments the devices may be, but are not required to be, lights.

A light-emitting device includes a first electrode, a second electrode facing the first electrode, a light-emitting layer provided between the first electrode the second electrode and including a phosphor, a layered body including a metal layer, a first insulating layer provided on a second electrode side of the metal layer, and a second insulating layer provided on a light-emitting layer side of the metal layer, and having a thickness that allows electron injection from the second electrode to the light-emitting layer, a first power supply configured to apply a voltage between the first electrode and the second electrode, and a second power supply configured to apply, between the metal layer and the second electrode, a voltage of which polarity of the second polarity is opposite to a polarity of the second electrode of a voltage applied by the first power supply between the first electrode and the second electrode.

Lighting device, in particular for automotive lighting applications, comprising a plurality of lighting elements arranged in one or more rows in order to form a luminous band, wherein each lighting element comprises at least one or more light emitting diodes (LEDs). The plurality of lighting elements is divided into one or more segments, wherein the lighting elements within each segment are electrically connected in series or in parallel. The lighting device further comprises at least one contacting element providing current for the plurality of lighting elements, wherein at least a first contacting element provides current for a first group of segments such that groups of lighting elements are independently and dynamically controlled.

Provided are a pixel drive circuit, a drive circuit of a display panel, and a display apparatus. The pixel drive circuit includes a switch unit and a drive unit, the switch unit is connected to the drive unit, and the drive unit is configured to be connected to a plurality of sub-pixel units; the switch unit is configured to receive a scan signal and a data signal, be switched on under action of the scan signal, and send the data signal to the drive unit; and the drive unit is configured to send the data signal to the plurality of sub-pixel units connected thereto in a time division manner.