Abstract: A lighting portion is attached to a reflective liquid crystal display portion. A first transparent substrate and a second transparent substrate made of a glass substrate etc. are attached to each other with a sealing layer coated on those peripheral portions therebetween. The back surface of the first transparent substrate is attached to the reflective liquid crystal display portion, and an organic EL element is formed on the front surface of the first transparent substrate. The organic EL element is sealed in a space surrounded by the first transparent substrate, the second transparent substrate, and the sealing layer. The organic EL element is formed in a region corresponding to a pixel region of the reflective liquid crystal display portion. A desiccant layer is formed on the front surface of the second transparent substrate.

Abstract: An LED illumination device is configured to receive coded messages by at least one of radio signals in free space, electrically conducted signals by wire, and light wave propagated signals in free space, process the coded messages, and transmit the coded messages by two or more of radio signals in free space, electrically conducted signals by wire, and light wave propagated signals in free space.

Abstract: A light-emitting diode fixture comprises spaced-apart first and second housing portions. There is a cooling device disposed within the first housing portion. The cooling device is in fluid communication with the second housing portion. First and second printed circuit boards are disposed within the second housing portion. A light-emitting diode and a negative coefficient thermistor array are mounted on the first printed circuit board. The light-emitting diode and the negative coefficient thermistor array are each thermally coupled to a heat sink. A rectifier is mounted on the second printed circuit board. The rectifier is electrically connected in series with the negative coefficient thermistor array and the cooling device. Current used to power the cooling device flows from the rectifier through the negative coefficient thermistor array to the cooling device.

Abstract: A vehicle lamp system 1 includes a plurality of light source units 22R and 22L and a controller 14 which controls the plurality of light source units 22R and 22L. The controller 14 sequentially turns on the plurality of light source units 22R and 22L when signals for operating a vehicle 10 are input. Thereby, it is possible to call attention to surrounding vehicles or pedestrians when starting the vehicle 10. The vehicle lamp system 1 can call attention to surrounding vehicles or pedestrians when starting a host vehicle.

Abstract: Lamp comprising: a light source comprising one or more LED type diodes; control means for controlling the geometry of the light beam of said light source in response to a control information or a control signal; a control unit for generating said control information or said control signal; wherein the control unit comprises a image sensor generating at least one image of the area illuminated by said light source and processing means for processing said image so as to generate said control information or said control signal.

Abstract: An LED driver for powering an LED fixture includes a power converter for converting an input power such as a rectified mains supply to an output power for powering the LED fixture; a control unit arranged to control an output characteristic of the power converter; optionally, a network terminal connected to the control unit for connecting the control unit to a network, the control unit being arranged to receive a control signal from the network via the network terminal for controlling the output characteristic; an application terminal connected to the control unit for connecting the control unit to a lighting device; the control unit being arranged to: provide a polling signal to the lighting device; receive, in response to the polling signal, a control signal for controlling the output characteristic.

Abstract: In one aspect of an embodiment for controlling operation of a light source, a method of associating a light source with an area for which the light source is positioned to provide lighting comprises: identifying, based on a determined physical position of a light source, one of a plurality of areas as the area for which the light source is positioned to provide lighting; identifying at least one desired lighting condition for the identified area; and controlling, using a processor, operation of the light source based on the identified at least one desired lighting condition for the identified area.

Abstract: The present invention relates to a light controller (102) configured to control a lighting system (100) for emitting light, comprising an image sensor (202) configured to capture an image of an activity area, and a control unit (200) configured to received the image, to detecting movement within the activity area, and to provide an activation signal for switching on a light source (104, 106, 108, 110) of the lighting system (100), wherein the control unit (200) is further configured to provide a deactivation signal for switching off the light source (104, 106, 108, 110) after a computed time period if no movement is detected within the activity area, the computed time period being based on a computed distance between a predetermined position within the activity area and a position of the latest detected movement within the activity area. The present invention provides advantages in relation to e.g.

Abstract: Lamp comprising one or more LEDs: A controllable power unit providing power supply to the LED lamps, A control unit for adjusting the light generated by the lamp, wherein said control unit includes an image sensor generating images of the illuminated area of the lamp, and a processor for processing the images to detect the presence of an eye in a presumably dangerous area, said control unit generating a control signal for reducing the amount of light generated by the LED during the detection of a human face, in particular of an eye in said presumably dangerous area.

Abstract: An application for a logo with an adjustable internal lighting includes an illuminated logo, a sensor and a circuit that controls the illuminated logo. The brightness and/or color of the illuminated logo are controlled by the circuit based upon ambient light and optionally, a user preference, operating mode and/or time-of-day. The sensor detects ambient light and signals the circuit to increase or decrease the brightness of the illuminated logo.

Abstract: A light emitting system includes a light emitting device having a forward voltage dependent on an ambient parameter, and a power control device including a current generator, a compensation voltage module, and a control signal generator. The current generator converts a control signal into a driving current for provision to the light emitting device, and provides a feedback voltage. The compensation voltage module obtains a compensation voltage according to the forward voltage, the feedback voltage, and a reference voltage. The control signal generator generates the control signal according to the compensation voltage for provision to the current generator.

Abstract: Systems and methods for adjusting power and frequency based on three or more states are described. One of the methods includes receiving a pulsed signal having multiple states. The pulsed signal is received by multiple radio frequency (RF) generators. When the pulsed signal having a first state is received, an RF signal having a pre-set power level is generated by a first RF generator and an RF signal having a pre-set power level is generated by a second RF generator. Moreover, when the pulsed signal having a second state is received, RF signals having pre-set power levels are generated by the first and second RF generators. Furthermore, when the pulsed signal having a third state is received, RF signals having pre-set power levels are generated by the first and second RF generators.

Abstract: The present invention relates to LED lamp string, comprising at least three conducting wires with insulating layers. One of the conducting wires is a positive conducting wire, and the others are negative conducting wires. A mounting part is provided on each negative conducting wire at every certain interval. A light emitting wafer is fixed to the mounting part. The light emitting wafer comprises a first electrode and a second electrode which are separately provided. The first electrode of the light emitting wafer connected with each negative conducting wire is electrically connected with the conductor of the same negative conducting wire. The second electrode is electrically connected with the conductor of the positive conducting wire via a wire. A transparent outer sealing gum encapsulating the mounting part, the light emitting wafer and the wire is provided on the LED lamp string.

Abstract: The present invention discloses a backlight control circuit, comprising: a voltage supply circuit for receiving an input voltage and generating an output voltage under control by a control signal; at least one voltage comparison path respectively coupled to at least one light emission device path; a voltage operative amplifier circuit for generating the control signal according to a lowest voltage on the at least one voltage comparison path; and at least one under current detection circuit for detecting whether a corresponding one of the at least one light emission device path is in an under current status, whereby when anyone of the under current detection circuits detects the under current status, it sends an exclusion signal excluding a corresponding one of the at least one voltage comparison path from being an effective input of the voltage operative amplifier.

Abstract: This straight tube LED illumination lamp includes the following: an LED element; a first plug having an input-output terminal and an empty terminal; a second plug having an input-output terminal and an empty terminal; a first rectifier that is connected to the input-output terminal of the first plug and the empty terminal of the second plug in order to convert alternating current to direct current; a second rectifier that is connected to the input-output terminal of the second plug and the empty terminal of the first plug in order to convert alternating current to direct current; and a bypass circuit through which current is flown back from either the first or second rectifier to the other rectifier. The bypass circuit has a current-limiting resistor to prevent the first and second rectifiers from being damaged.

Abstract: An LED lighting device includes: a resistor R1 configured to output a detection value of an inductor current I1 flowing through an inductor L1 during an ON period of a switching element Q1; a threshold generation section 42 configured to generate a threshold value Vs of the inductor current I1 corresponding to a dimming level; and a switching control section 44 configured to control the switching element Q1 to turn on and off. The switching control section 44 is configured to determine an OFF timing of the switching element Q1 based on comparison between the detection value and the threshold value Vs of the inductor current I1. The LED lighting device increases a period of a switching cycle of the switching element Q1 with decrease of the dimming level.

Abstract: In accordance with these and other embodiments of the present disclosure, a system and method for providing compatibility between a load and a secondary winding of an electronic transformer driven by a trailing-edge dimmer may include predicting based on an electronic transformer secondary signal an estimated occurrence of a high-resistance state of the trailing-edge dimmer, wherein the high-resistance state occurs when the trailing-edge dimmer begins phase-cutting an alternating current voltage signal and operating the load in a high-current mode for a period of time immediately prior to the estimated occurrence of the high-resistance state.

Abstract: A system and method for providing compatibility between a load and a secondary winding of a magnetic transformer driven at its primary winding by a trailing-edge dimmer may include determining from a magnetic transformer secondary signal a period of a half-line cycle of an output signal of the dimmer, determining from the magnetic transformer secondary signal an estimated occurrence of an end of a phase-cut angle of the dimmer, and generating a driving signal to the load based on the period and the estimated occurrence of the end of the phase-cut angle. A lamp assembly may include a lamp for generating light and a controller for controlling operation of the lamp, the controller comprising a timing control circuit for determining a period of a periodic signal received by the lamp assembly.

Abstract: The present invention pertains to an inductor current detection circuit in a switching mode power supply, and a light-emitting diode (LED) driver thereof. In one embodiment, an inductor current detection circuit configured in a switching mode power supply under discontinuous conduction mode, can include: (i) a voltage detection circuit configured to generate a sampling voltage based on a drain-source voltage of a power switch in the switching mode power supply; (ii) a voltage holding circuit configured to receive the sampling voltage, and to generate a holding voltage through a sampling and holding operation; and (iii) a comparison circuit configured to compare the sampling voltage against the holding voltage, and to generate a zero-crossing signal when the sampling voltage is less than the holding voltage, where the zero-crossing signal is configured to represent an inductor current ending time of the switching mode power supply.

Abstract: A PWM signal generation circuit according to the present invention includes a duty setting unit (10) configured to generate a duty control signal designating a duty ratio corresponding to each period of a PWM signal on the basis of an initial duty setting signal, a target duty setting signal, a slope setting signal, and a clock signal, a period setting unit (20) configured to output a period setting value, and an output control unit (30) configured to generate the PWM signal having a period corresponding to the period setting value and having a duty ratio corresponding to a value of the duty control signal. The duty setting unit (10) increases the value of the initial duty ratio to the value of the target duty ratio each time the number of a clock pulse of the clock signal reaches the period setting value reaches the slope setting value.

Abstract: An apparatus may include a controller to provide compatibility between a load and a secondary winding of a transformer driven at its primary winding by a dimmer, wherein the controller is configured to: determine from a transformer secondary signal whether the transformer comprises a magnetic transformer or an electronic transformer; and select a compatibility mode of operation from a plurality of modes of operation based on the determination of whether the transformer comprises a magnetic transformer or an electronic transformer. A method for providing compatibility between a load and a secondary winding of a transformer driven at its primary winding by a dimmer may include determining from a transformer secondary signal whether the transformer comprises a magnetic transformer or an electronic transformer and selecting a compatibility mode of operation from a plurality of modes of operation based on the determination of whether the transformer comprises a magnetic transformer or an electronic transformer.

Abstract: Disclosed herein is an apparatus and method for controlling a fault in a lighting network The apparatus includes power selection units respectively provided in a plurality of lighting units connected to one another over a network, each power selection unit being configured to compare a reference voltage with an output voltage sensed from power supply signals input from power supply units respectively provided in a lighting unit, located ahead of a faulty lighting unit, and the faulty lighting unit if a fault occurs in the lighting unit, and to select supply power to be supplied to the faulty lighting unit. Lighting control units control driving of the faulty lighting unit using the selected supply power.

Abstract: A load control device for controlling the amount of power delivered to an electrical load (e.g, an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.

Abstract: A load control device for controlling the intensity of a light source (e.g., a light-emitting diode light source) reduces visible flickering in the light source when a target intensity of the light source is dynamically changing. The load control device includes a load regulation circuit operable to conduct a load current through the electrical load and to control the amount of power delivered to the electrical load. The load control device also includes a controller for adjusting the average magnitude of the load current to a target current. The controller pulse-width modulates the magnitude of the load current between a first current less than the target current and a second current greater than the target current. When the target current is dynamically changing, the controller is operable to adjust to the average magnitude of the load current towards the sum of the target current and a supplemental signal.

Abstract: An example power supply includes an energy transfer element, a switch, and a controller. The switch is coupled to the energy transfer element to control a transfer of energy from an input to a galvanically isolated output of the power supply. The controller includes a delayed ramp generator, an integrator, an arithmetic operator, and a drive signal generator. The integrator generates a first signal responsive to integrating an input current of the power supply. The arithmetic operator generates a second signal responsive to the first signal and responsive to a ratio of a rectified input voltage to a dc output voltage of the power supply. The drive signal generator generates a drive signal in response to a delayed ramp signal and the second signal to control switching of the switch to provide power factor correction of the power supply and to provide a regulated current at the output.

Abstract: An actuator (1M, 1S) with a motor (12) and a motor controller (11) is configurable to operate as a master or a slave to another actuator which is coupled mechanically for driving a common load. For the case where the actuator (1M) is set as the master, the motor controller (11) receives on an input terminal (Y3) an external position control signal (pC), generates a motor control signal (sC) for controlling the motor (12) based on the position control signal (pC), and supplies the motor control signal (sC) to an output terminal (U5) for controlling a slave. For the case where the actuator (1S) is set as the slave, the motor controller (11) controls the motor (12) by supplying to the motor (12) the motor control signal (sC) received from the master. Controlling the actuators with a master improves workload balancing and reduces damages to transmission mechanics of the actuators.

Abstract: An apparatus includes a vibration-type actuator and a driving circuit. The vibration-type actuator includes a vibration member and a moving member, wherein the vibration member includes an electro-mechanical energy conversion element and the moving member is configured to move relative to the vibration member. The driving circuit includes a capacitor and an inductor connected in series with the capacitor to the electro-mechanical energy conversion element. In an example, parameters of the driving circuit are set such that, when a series resonance frequency of the inductor and the capacitor is denoted by fs and a resonance frequency of the vibration member is denoted by fm, a condition 0.73·fm<fs<1.2·fm is satisfied.

Abstract: There are provided an apparatus and a method for driving a voice coil motor (VCM), the apparatus including an instruction signal generating unit generating an instruction signal according to a digital signal generated from an input signal, and a driving unit driving the voice coil motor (VCM) by selecting a path for a driving current applied to the voice coil motor (VCM) according to the digital signal and controlling a duty of the driving current according to the instruction signal.

Abstract: At least one of a current value and a voltage value of an electrical storage device which is charged and discharged is detected with the use of each of a plurality of sensors. A predetermined process is executed on the basis of the detected values of the plurality of sensors The predetermined process is executed without using the detected values of the sensors in the predetermined process when a difference between a frequency of each of the detected values, which varies with a rotation speed of a motor that operates upon reception of an output power of the electrical storage device, and a resonance frequency of a step-up circuit, which varies with operation of the step-up circuit that steps up an output voltage of the electrical storage device and outputs the stepped-up electric power to the motor, is smaller than a threshold.

Abstract: A capacitor (114) is provided between a power supply line (111a) and a ground line (111b), which connect a power supply connector (130) connected to a high voltage power supply (140) and a power element (118). A current detection unit (113) for detecting positive current flowing in the direction from the high voltage power supply (140) to the power element (118) and negative current flowing in the opposite direction is provided on the power supply line (111a). A load resistor (112) is provided between the current detection unit (113) and the power supply connector (130). When the current value detected by the current detection unit (113) becomes less than zero, a control unit (116) detects that the connection of the high voltage power supply (140) has released.

Abstract: An equalizing apparatus that includes discharging circuitry and charging circuitry. The discharging circuitry includes a plurality of discharging sections corresponding to the plurality of battery cells in the plurality of battery cell groups. The charging circuitry includes a first coil, a switching device, a plurality of second coils, a plurality of switching devices, and a plurality of diodes. Each of the plurality of second coils, switching devices, and diodes corresponds to a battery cell group. The first coil and second coil form a transformer.

Abstract: A controller for a multiple-phase rotating machine includes power converters for supplying alternating current to winding sets of the rotating machine. A pair of each electrical power converter and a corresponding winding set forms a system. The controller further includes a failure detector for detecting a failure in each system. The failure causes a braking current in the rotating machine. The controller further includes a control section for setting a d-axis current and a q-axis current to drive the power converter in each system. When the failure detector detects the failure in any one of the systems, the control section stops the power converter in the failed system and sets the d-axis current in the normal system in such a manner that an electric current in the failed system is reduced.

Abstract: Synthesized signal generation circuits are provided to correspond to a U-coil, a V-coil, a W-coil, respectively, and generate synthesized signals by synthesizing a first command signal and a second command signal generated by a command signal generation circuit. CPU output terminals output the synthesized signals. Signal wires are provided with one ends being connected electrically to the CPU output terminals, respectively, and other ends being connected electrically to IC input terminals of a driver IC, respectively. Gate signal generation circuits separate the synthesized signals applied to the IC input terminals to generate first gate signals as gate signals for high-side FETs and second gate signals as gate signals for low-side FETs.

Abstract: A method of controlling a brushless motor that includes sensing a temperature and using the sensed temperature to define a current limit. A lower current limit is then defined for a lower sensed temperature. A winding of the motor is sequentially energised and de-energised, with the winding being de-energised when current in the winding exceeds the defined current limit.

Abstract: A power conversion device is provided in which destruction of a switching element can be avoided by preventing an excessive current from flowing into the switching element of a main circuit when, for example, a power supply for the power conversion device is interrupted. The power conversion device including a first switch unit in which a plurality of switching elements are series-connected is characterized by including, in the plurality of switching elements, at least one or more switching elements whose gate voltage thresholds are no more than a predetermined value and at least one or more switching elements whose gate voltage thresholds are more than the predetermined value.

Abstract: If a running range is selected, a current conduction mode of a motor is set to a low speed mode in which a current is conducted through a first and second windings, when a rotation speed of the motor is less than a threshold value, and is set to a high speed mode in which a current is conducted through only the first winding, when the rotation speed is equal to or greater than the threshold value. If a neutral range is selected, control of the inverter is stopped, and, a regeneration suppression control is executed to switch the current conduction mode to the high speed mode, not only in a higher-side speed range where the rotation speed is equal to or greater than the threshold value, but also in at least a part of a lower-side speed range where the rotation speed is less than the threshold value.

Abstract: Systems and methods of interacting complex electric fields and static electric fields to effect motion are disclosed. An example method includes producing an action force having a reaction force perpendicular to the action force by interacting a relative velocity electric field based on charge of a moving first charged object and a static charge on a second charged object in a different inertial frame of reference. Another example method includes producing an action force having a reaction force perpendicular to the action force by interacting an acceleration generated electric field based on acceleration of a first charged object and a static charge on a second charged object in a different inertial frame of reference. Another example method includes producing an action force having a reaction force perpendicular to the action force by interacting a scalar electric potential and static electric field.

Abstract: A method of preheating a brushless motor that includes sequentially energising and de-energising a phase winding over one or more drive periods. The phase winding is energised in the same direction throughout each drive period so as to lock a rotor of the motor at an aligned position.

Abstract: A vibration control robot system of the present invention includes: a robot controller (101) transmitting an operation command value and receiving an output value of a pulse encoder of the servo motor, wherein the robot controller includes a controller-side communication unit (5) which transmits the operation command value and the output value of the pulse encoder to a robot vibration controller; and the robot vibration controller (11) including: an acceleration sensor interface (15); a corrected operation command value calculation unit (13) which calculates a corrected operation command value obtained so as to suppress vibration of the robot; and a vibration-controller-side communication unit (12) which transmits the corrected operation command value to the robot controller (101), wherein the robot vibration controller (11) is arranged independently of the robot controller (101).

Abstract: An electric drive is disclosed, in particular for a power tool, including a rotor, a stator, and a first coil arrangement, which is designed to drive the rotor by a first rotating field, and including a first motor control arrangement, which is designed to supply the first coil arrangement with electric current in order to generate a first rotating field. The stator has a second coil arrangement for generating a second rotating field. The second coil arrangement can be actuated and energized separately from the first coil arrangement so as to actuate the second coil arrangement in an arbitrary commutation sequence.

Abstract: A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.

Abstract: The present invention relates to a table top, solar-powered charging/electricity providing to renewable devices having a shade structure for outdoor use. The invention having a base structure for stabilizing the device and for providing one or more compartments for storing items therein and/or providing a docking station or cellular phone charging station, a shade structure which contains one or more solar cells attached to an outer surface thereof, an attachment arm which connects the base and the shade structure, and various electronic components operative to convert solar energy into electricity.

Abstract: The present invention relates to an AC solar panel system (1) which converts solar energy into electrical energy and provides alternating current as output. The inventive AC solar panel system (1) comprises: a photovoltaic panel (4) which converts solar energy into direct current electricity, a frame (7) which encloses the photovoltaic panel (4) safely, and a direct current-alternating current inverter (8) which is placed into the frame (7) and converts the direct current that is generated by the photovoltaic panel (4) into alternating current. In the event that it is also desired to store the energy generated, a plurality of batteries (10) are connected to the photovoltaic panel (4) which has the inverter (8) together with the charge control member (11) and into the frame (7) electrically.

Abstract: An apparatus is provided that includes a first terminal to couple to a first node of a stacked battery pack having a first cell block and a second cell block, a second terminal to couple to a second node between the first cell block and the second cell block, and a voltage management circuit to detect an output voltage at the second terminal and to adjust energy within the battery pack based on the output voltage to be detected at the second terminal.

Abstract: Disclosed is a battery and load equalization circuit that prevents the in-rush of current when batteries and/or loads are initially connected in parallel. Various techniques are used including charging, discharging and use of DC to DC converters to equalize charges between batteries and between batteries and capacitive loads.

Abstract: A dynamic charging device includes a detection module for generating a detection signal according to an input signal, a control module coupled to the detection module for generating a control signal according to the detection signal, and an output module coupled to the control module for dynamically adjusting amounts of the input signal according to the control signal and the input signal, so as to process a charging operation for a load module, wherein the input signal is an input current or a voltage source.

Abstract: The present disclosure may provide various electric transmitter arrangements which may be used to provide wireless power transmission (WPT) while using suitable WPT techniques such as pocket-forming. In some embodiments, transmitters may include one or more antennas connected to at least one radio frequency integrated circuit (RFIC) and one microcontroller. In other embodiments, transmitters may include a plurality of antennas, a plurality of RFIC or a plurality of controllers. In addition, transmitters may include communications components which may allow for communication to various electronic equipment including phones, computers and others.

Abstract: A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver, receiving at least one of identification information and setting information from the wireless power receiver, receiving a control error packet from the wireless power receiver, and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.

Abstract: A method and apparatus for transmitting charging power to a wireless power receiver. The method includes detecting the wireless power receiver by applying different detection powers with different power levels; applying a driving power to drive the detected wireless power receiver; receiving a request signal for communication from the detected wireless power receiver using the driving power; determining whether or not to subscribe the detected wireless power receiver to a wireless power network; transmitting, to the detected wireless power receiver, a response signal to the request signal for communication, the response signal indicating whether or not the detected wireless power receiver is subscribed to the wireless power network; and transmitting charging power to the detected wireless power receiver, when the detected wireless power receiver is subscribed to the wireless power network.

Abstract: According to one embodiment, configured to be charged by a charger, an electronic apparatus comprises a first housing, a display device, a power reception unit and a second housing. Arranged in the first housing, the display device comprises a display screen. The power reception unit is arranged at the first housing in a position overlapping the display device on a side opposite to the display screen and in a position eccentric from a center of the display device, and configured to receive an electricity transmitted from a power transmission unit of the charger with the first housing standing on an exterior setting surface. The second housing is configured to support the first housing with standing on the exterior setting surface, and an input device on the second housing.