Abstract: An intrinsically safe (IS) luminaire disposed in a hazardous environment provides visible light and serves as a primary, auxiliary, back-up, and/or charging source of IS DC power for external devices disposed in the hazardous environment, such as process control devices and equipment. The luminaire includes a power converter that converts received power into DC power, an IS barrier that converts the DC power into IS DC power native to or utilized by a recipient external device, and a power distribution port via which IS DC power is delivered to the external device. In some configurations, the luminaire monitors communicates statuses, alerts, and/or other information corresponding to delivering IS DC power to one or more external devices to a host and/or portable communication device. The luminaire may include multiple IS barriers of same and/or different IS ratings, and may dynamically control activation/deactivation of the IS barriers and/or usages thereof.

Abstract: An inventive apparatus includes a substrate and a set of multiple electrically conductive traces. The substrate is transparent or reflective for visible light. The electrically conductive traces are sufficiently transparent, or are less than 200 ?m wide and occupy less than 25% of an areal extent of the set, so as to enable visual observation of a scene through or reflected by the substrate along a sight line that passes through the set of electrically conductive traces.

Abstract: Disclosed are a light emitting semiconductor integrated circuit including a light emitting semiconductor lamp body and a high voltage constant current driver chip. The lamp body has a plurality of non-flashing LED lamps and/or flashing LED lamps connected in series. An input voltage of the high voltage constant current driver chip has a preset input voltage range, a first reverse breakdown voltage of the high voltage constant current driver chip has a preset breakdown voltage range, a first output current of the high voltage constant current driver chip has a preset output current range, and a first threshold voltage of the high voltage constant current driver chip has a preset threshold voltage range.

Abstract: Provided is a method and apparatus for controlling light attributes of a lighting device, and a lighting system and includes an indicator that receives an input, and sends to a control unit, a signal for switching light attribute of the lighting device; and the control unit determines whether a first switching signal or a second switching signal from the indicator is received during a light emission period after the lighting device is powered on, and if it is determined that the first switching signal is received, switching a current light attribute to another light attribute, or if it is determined that the second switching signal is received, switching the current light attribute to a light attribute indicated by the second switching signal such that when a specific light attribute is indicated by the second switching signal, the light attribute can still be adjusted with the first switching signal.

Abstract: An example apparatus includes a first transistor configured to receive an analog voltage signal; a second transistor configured to receive a first control signal, coupled to the first transistor, and coupled to a first terminal; a third transistor configured to receive a second control signal, receive a supply voltage, and coupled to the first terminal; a capacitor coupled to the first terminal and to ground; a fourth transistor configured to receive a third control signal and coupled to the first terminal; a fifth transistor gate configured to receive a bias voltage, coupled to ground, and coupled to the fourth transistor; a sixth transistor coupled to the fourth transistor and to ground; a seventh transistor configured to receive the supply voltage, coupled to the first terminal and to the sixth transistor; and an eighth transistor coupled to the first terminal, to the sixth transistor, and to ground.

Abstract: In some examples, an apparatus includes an isolating transformer and a grounding circuit. The isolating transformer has first and second coils separated by an isolation barrier, the first coil having first and second terminals. The grounding circuit is coupled to the first and second terminals. The grounding circuit is configured to couple the first and second terminals to a ground terminal during a first time period. The grounding circuit is also configured to decouple the first and second terminals from the ground terminal during a second time period.

Abstract: Provided are a method and an apparatus for controlling an under-display camera, and the under-display camera structure. The method includes: when a camera is in a turned-on state, lamp beads close to a camera end are turned off and lamp beads far away from the camera are controlled to be in a lighting state, and light emitted by the second-type lamp beads forms a circle of light on the convex glass after being refracted by the convex glass; and when the camera is in a turned-off state, the plurality of lamp beads are controlled to be in a lighting state, and backlight for the convex glass after being refracted is provided by the convex glass. When the camera is turned on, the light emitted by the lamp beads far away from the camera forms a circle of light on the convex glass after being refracted by the convex glass.

Abstract: A digital clock multiplier (DCM) circuit including: a plurality of power amplifier (PA) rows, wherein each PA row comprises a plurality of cascade switched capacitor power amplifiers (SCPA) unit cells configured to: receive a phase shift of a driving clock phase; and one or more processors configured to: disable of one or more of the plurality of cascade SCPA unit cells based on a frequency of the phase shift; generate an output signal for each of the cascade SCPA unit cells; and combine the output signal for each of the cascade SCPA unit cells to generate an PA row output signal.

Abstract: The present disclosure provides a signal driven light-emitting e-sports table, comprising a table top; a signal input device for receiving an signal input; and a controller; wherein the table top is provided with a light-emitting device; an input of the controller is connected with the signal input device; an output of the controller is in communication with the light-emitting device though signaling; and the light-emitting device is controlled to emit light based on the signal input. The signal driven light-emitting e-sports table according to the present disclosure may provide a light-emitting effect according to the signal input, and may control the change of the light-emitting mode of the table top, to provide a variable light-emitting function for the table top, and to provide a light source for the e-sports players, and can provide the function of lighting. It is especially suitable for use as a sports platform in e-sports.

Abstract: A semiconductor device includes a plurality of pulse width modulation circuits, wherein the respective pulse width modulation circuits include a first inverter for inverting clock signals and outputting a first inversion signal, a NOR gate for performing a NOR operation on the first inversion signal and a first logic signal and outputting a second logic signal, and a second inverter for inverting the second logic signal and outputting a second inversion signal. Regarding two adjacent pulse width modulation circuits from among the pulse width modulation circuits, a clock signal of one pulse width modulation circuit is delayed from a clock signal of the other pulse width modulation circuit from among the pulse width modulation circuits by a predetermined phase, and the first logic signal of the one pulse width modulation circuit is the second logic signal of the other pulse width modulation circuit.

Abstract: A modular system includes an LED driver and an LED light engine. The driver includes a switched mode power converter and a first control unit to control a switch of the converter, thereby controlling the supply current to an LED assembly of the light engine. The assembly includes LEDs and one or more switches arranged in series or in parallel with one or more of the LEDs. The light engine also includes a second control unit controlling the one or more switches of the LED assembly so as to control current through the LEDs. The first control unit controls amplitude of the supply current. The second control unit controls duty cycle of the LED current through the LEDs. The first and second control units are configured to synchronize a switching operation of the switched mode power converter with a switching operation of the switches of the light engine.

Abstract: The invention relates to an illumination device, in particular for a confocal microscope. The object of the invention is to provide an illumination device which operates with a plurality of current-modulated semiconductor-based light sources, in which the light emission is as free as possible from distortions due to dynamic delays of the light emission in the output beam.

Abstract: An illumination device is provided. The illumination device includes a light source and a current path configured to transport a supply current to the light source. Further, the illumination device includes a sensor configured to contactlessly measure a current strength of the supply current in the current path and to output a measurement signal indicative of the measured current strength. The illumination device additionally includes processing circuitry coupled to the sensor and configured to determine the optical output power of the light source based on the measured current strength indicated by the measurement signal.

Abstract: A control circuit and a method for delaying an electronic signal are provided, along with a time-to-digital converter including the control circuit. The example control circuit includes a first delay circuit having a first plurality of delay elements electrically connected in series and configured to generate a first control voltage associated with a first delay time. The control circuit further includes a second delay circuit having a second plurality of delay elements electrically connected at least in part in series. The second delay circuit is configured to generate a second control voltage associated with a second delay time. A first group of delay elements within the second plurality of delay elements exhibits the first delay time based on the first control voltage, and a second group of the second plurality of delay elements exhibits a second delay time based at least in part on the second control voltage.

Abstract: An amusement park system includes an electronic post configured to be positioned within a receptacle of a base of the amusement park system. The electronic post is configured to receive power directed to the receptacle. The amusement park system also includes a control system configured to determine a location of the electronic post and instruct operation based on the location.

Abstract: A delay device and a delay control method are provided. The delay device includes at least one current-controlled delay group and at least one switch. The at least one current-controlled delay group is coupled to a transmission wire, each of the at least one current-controlled delay group includes at least one current-controlled delayer, and each of the at least one current-controlled delayer provides a delay according to a control voltage. The at least one switch is coupled between the at least one current-controlled delay group and the transmission wire, and each of the at least one switch is turned on or off according to a bit of an enable signal applied thereto. In the disclosure, the generated delay can be dynamically adjusted and cannot be affected by parasitic capacitance.

Abstract: A method includes awaiting for a gateway period, at a lighting system element of a lighting control group, for zero or more gateway messages from a gateway over a wireless communication network; tracking, at the lighting system element, zero or more gateway messages from the gateway that are received; and, in response to the zero or more gateway messages received, requesting designation of a gateway repeater to communicate with the gateway. The method further includes awaiting for a controller period, at the lighting system element, for zero or more controller messages from a local lighting zone controller over the wireless communication network; tracking, at the lighting system element, the zero or more controller messages from the local lighting zone controller that are received; and, in response to the zero or more controller messages, requesting designation of a local lighting zone repeater to communicate with the local lighting zone controller.

Abstract: A method of applying three-phase power to a transformer having limbs including a first limb, a second limb, and a third limb respectively wound with primary windings that include a first winding, a second winding, and a third winding, includes: generating alternating current (AC) voltages (AC voltages) including a first AC voltage, a second AC voltage, and a third AC voltage; initially not applying the AC voltages to the primary windings; monitoring a relative voltage between the first AC voltage and the second AC voltage; and based on results of monitoring, implementing a power-on sequence of sequentially applying various ones of the AC voltages to corresponding ones of the primary windings until all of the AC voltages are applied to all of the primary windings in a manner that balances flux across the limbs during and after the power-on sequence.

Abstract: A frequency-detecting circuit, a DCC, and an electronic device. The frequency-detecting circuit includes a control-signal generating circuit generating a first control signal and a second control signal delayed relative to the first control signal; a charging and discharging path, under control of the second control signal, during a period with a pulse width when the second control signal is at a high level, performing the discharging process, and performing the charging process during another period when the second control signal is at a low level; and a control-voltage generating circuit, sampling values of a voltage of an output terminal of the charging and discharging path before the discharging process during a period with a pulse width when the first control signal is at the high level, to output a corresponding first voltage signal.

Abstract: A device (11) for providing audio and/or video content to a media rendering device over a physical connection and controlling one or more wireless lighting devices (31,32) to render light effects based on an analysis of the audio and/or video content is configured to obtain relative distance information (201-204). The relative distance information is indicative of distances between the device and each of a plurality of wireless lighting devices (31-34). The device is further configured to select, based on the relative distance information, the one or more wireless lighting devices from the plurality of wireless lighting devices, perform the analysis of the audio and/or video content, determine the light effects based on the analysis of the audio and/or video content, and control the selected one or more wireless lighting devices to render the light effects.