Abstract: A radio frequency power system includes a master RF generator and an auxiliary RF generator, wherein each generator outputs a respective RF signal. The master RF generator also outputs a RF control signal to the auxiliary RF generator, and the RF signal output by the auxiliary RF generator varies in accordance with the RF control signal. The auxiliary RF generator receives sense signals indicative of an electrical characteristic of the respective RF signals output by the master RF generator and the auxiliary RF generator. The auxiliary RF generator determines a phase difference between the RF signals. The sensed electrical characteristics and the phase are used independently or cooperatively to control the phase and amplitude of the RF signal output by the auxiliary RF generator. The auxiliary generator includes an inductive clamp circuit that returns energy reflected energy back from a coupling network to a variable resistive load.

Abstract: A client-server system and a blockchain method for calculating whether a time-crucial shipment is located according to an expectation comprising a client device adapted for being adhered to or placed within a time-crucial package shipment; and a remote special purpose computer server comprising a transit plan schedule database based on pickup time and location stored in memory, the remote special purpose computer server being programmed to calculate a location of the client device based on data accessed from a Wi-Fi access point location database, the transmitted identification data, and the transmitted signal strength data, and compare the calculated location to an expected location based on common carrier schedule transit plan pickup time and delivery location received from third party database sources.

Abstract: Energy and a control signal may be provided using a coupled power and control cable. The coupled power and control cable may comprise a power cable, a control cable, and an overall jacket. The power cable may be connected between a switch and a fixture and may provide energy to the fixture from the switch. The control cable may be connected between the control circuit and the fixture and may provide the control signal to the fixture from the control circuit. The power cable and the control cable may be disposed beneath the overall jacket.

Abstract: An object of the present invention is to improve an antenna for IoT services intended for things that constitute an internal space. There is provided an antenna device including an antenna and a dielectric body. In an internal space which is constituted by plural faces including a first face which is an electrically conductive body, the antenna device is adapted to have a shape to be fit inside a hole in the first face. The antenna device is installed, not protruding from the hole to an outer space. The antenna and the dielectric body are placed in series between the internal space and the outer space.

Abstract: Various embodiments include apparatuses and methods control apparatus to color tune a light-emitting diode (LED) array. In one specific example, a control apparatus to color tune a light-emitting diode (LED) array for perceptually uniform color-tuning is disclosed. The apparatus includes a correlated color temperature (CCT)-control device that is adjustable by an end-user to a desired color temperature of the LED array and producing an output signal corresponding to the desired color temperature. A storage device is electrically coupled to the CCT-control device to correlate a mechanical movement range of the CCT-control device to provide substantially uniform increases in perceptual CCT values from the LED array based on a set of N predetermined values. Other apparatuses and methods are described.

Abstract: A client-server system and a blockchain method for calculating whether a time-crucial shipment is located according to an expectation comprising a client device adapted for being adhered to or placed within a time-crucial package shipment; and a remote special purpose computer server comprising a transit plan schedule database based on pickup time and location stored in memory, the remote special purpose computer server being programmed to calculate a location of the client device based on data accessed from a Wi-Fi access point location database, the transmitted identification data, and the transmitted signal strength data, and compare the calculated location to an expected location based on common carrier schedule transit plan pickup time and delivery location received from third party database sources.

Abstract: A printed wiring board includes a laminated structure including insulating layers, and conductive layers laminated on the insulating layer, respectively, such that the conductive layers include an outermost conductive layer having a radiation slot, and an inner-side conductive layer having an excitation portion facing the radiation slot in a lamination direction. The laminated structure has a recess portion recessed from the radiation slot toward the excitation portion such that a bottom surface of the recess portion is positioned between the outermost conductive layer and the excitation portion, and the insulating layers include an insulating layer having at least a portion covering the excitation portion.

Abstract: An LED lighting system having at least one LED circuit and at least two circuits or drivers capable of receiving an AC voltage at a first frequency and having an output capable of driving the at least one LED circuit, wherein the output of each circuit or driver capable of driving the at least one LED circuit is provided to the at least one LED circuit through a circuit or sensor capable of permitting only a single output from the at least two circuits or drivers be provided to the at least one LED circuit.

Abstract: A light projection device includes a tubular casing having a light-emitting part at one tube end; a light source configured with a light-emitting diode; and a light amount control mechanism positioned between the light source and the light-emitting part. The light amount control mechanism includes a rotating body, an operating part attached to the rotating body such as to allow for rotary operation of the rotating body from outside the casing, a variable resistor, and a link mechanism operably connecting the rotating body and the variable resistor such that a forward movement of the rotating body causes a movable part of the variable resistor to move in a direction in which the amount of current is increased and such that a backward movement of the rotating body causes the movable part of the variable resistor to move in a direction in which the amount of current is decreased.

Abstract: A method and an apparatus for charge recycling. The method is comprised of the steps of receiving a charge at an energy storage element from a parasitic component, storing the charge at the energy storage element, and providing the charge stored at the energy storage element to a power supply's input or output. The step of receiving the charge at the energy storage element includes operating a discharging switch to selectively couple the parasitic component with the energy storage element and receiving the charge at the energy storage element via the discharging switch when the energy storage element and the parasitic component are coupled.

Abstract: A load control device (e.g., a switching device) for controlling power delivered from an AC power source to an electrical device (e.g., a lighting load) may be configured to detect that a relay is stuck closed and attempt to fix the relay. The relay of the load control device may be adapted to be coupled between the source and the electrical device to control the power delivered to the electrical device so as to generate a switched-hot voltage. The load control device may comprise a detect circuit configured to generate a detect signal indicating a magnitude of the switched-hot voltage, and a control circuit configured to monitor the detect signal. The control circuit may be configured to determine that the relay is stuck closed in response to the detect signal, and to control the relay in order to attempt to fix the relay by repeatedly closing and opening the relay.

Abstract: Examples of the present disclosure are related to systems and methods for voltage interfaces between legacy control systems and light sources. An example voltage interface may include a control loop including a first op-amp, an output loop including a second op-amp, and an optical isolator configured to electrically isolate the control loop from the output loop, the optical isolator being configured to receive an input signal from the control loop and transmit an output signal to the output loop.

Abstract: A wired system and method for controlling lighting attributes of at least one low voltage lighting device. The method comprises selecting desired lighting attributes via an input means at a lighting controller or transmitter, serializing and encoding the selected lighting attributes and at least one device address into a data stream output by the transmitter, propagating the encoded data stream through pulse shaping circuitry to at least one power device which drives an output wire comprising both data and power, decoding the lighting attributes from the encoded data stream by a microcontroller within a receiver connected to the output wire, and applying the decoded lighting attributes to at least one output power device to drive at least one low voltage lighting device.

Abstract: Access points which can be mounted in a variety of locations or orientations and can support multiple communications protocols are described. The access point includes a main housing, e.g., main body, and a front housing connected together by a hinge. A Wi-Fi antenna is included in the front housing in some embodiments. The access point can be used in an open or closed position. When mounted in a vertical position the front housing can be lowered into a horizontal position facilitating preferred antenna orientation. A first set of cooling fins serves to keep the internal components of the access point off a wall when the access point is wall mounted facilitating air flow. Additional fins act as a spacer between the main housing and the front housing when the access point is used in a closed position facilitating air flow around both sides of the main housing.

Abstract: An LED drive circuit can include: a transistor and an LED load coupled in series, and being configured to receive a direct current bus voltage, and to generate an input current; and a control circuit configured to generate a drive signal to control an operation state of the transistor to control a distribution range of the input current by controlling an amount of accumulated charge of the input current during a half power frequency period.

Abstract: Systems and methods are disclosed for communicating via a communications network with a load control system of a respective user environment, receiving information on the load control system via the communications network, displaying graphical user interfaces based on the received information, and controlling and configuring the load control system via graphical user interfaces by communicating via the communications network messages the load control system.

Abstract: An antenna module includes a first antenna and a second antenna. The first antenna forms multiple operating states. By switching the multiple operating states, the first antenna supports an LTE low frequency of 698-960 MHz and an LTE medium-high frequency of 1710-2690 MHz, and supports multi-carrier aggregation in the band. In each operating state, the first antenna also operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz, the second antenna operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz and a new TDD-LTE band of 5150-5925 MHz. The first antenna and the second antenna together form a 2×2 MIMO of 5G bands of 3300-3800 MHz and 4800-5000 MHz. The antenna module provided by the disclosure has better communication performance.

Abstract: An end device having a controller and a method for controlling the end device are provided. The end device has a host module for processing commands received at the end device and for applying commands received to the end device, a radio module for receiving wireless communications to be provided to the host module as commands and for receiving wired communications to be provided to the host module as commands, and a DMX module for receiving wired communications to be provided to the host module as commands. When wired communications are received at the DMX module, those communications are provided to the radio module for relaying to the host module as a command. A method is provided for controlling the end device described.

Abstract: A client-server system and a blockchain method for calculating whether a time-crucial shipment is located according to an expectation comprising a client device adapted for being adhered to or placed within a time-crucial package shipment; and a remote special purpose computer server comprising a transit plan schedule database based on pickup time and location stored in memory, the remote special purpose computer server being programmed to calculate a location of the client device based on data accessed from a Wi-Fi access point location database, the transmitted identification data, and the transmitted signal strength data, and compare the calculated location to an expected location based on common carrier schedule transit plan pickup time and delivery location received from third party database sources.

Abstract: Systems and methods include receiving a desired light color temperature-time function. A first drive signal parameter is selected for a first light source having a first color temperature and a second drive signal parameter is selected for a second light source having a second color temperature. The drive signal parameters are selected to create a color temperature for a value of the desired light color temperature-time function. First light is emitted from the first light source and second light from the second light source. The first light and the second light combine to form blended light at the color temperature for the value from the desired light color temperature-time function.