KR20180108174A - Electronic device and method for wireless changing of the same - Google Patents

Abstract

The present invention relates to a wireless charging method of an electronic device for wirelessly supplying power. The method comprises the operations of: measuring the receiving signal intensity related to a local area network signal from one or more power receivers of which at least a part is put on a charging pad; determining a charging priority among the one or more power receivers based on the measured receiving signal intensity; and wirelessly supplying power to the one or more power receivers at least based on the priority.

Description

ELECTRONIC DEVICE AND METHOD FOR WIRELESS CHANGING OF THE SAME [0002]

Various embodiments of the present invention are directed to a multiple wireless charging method using near field communication and an electronic device including the method.

Recently, with the development of wireless charging technology, a method of supplying power to various electronic devices by charging one charging device has been researched.

Such a wireless charging technique uses wireless power transmission and reception, for example, a system in which an electronic device can be charged automatically without being connected to a separate charging connector, but simply by placing it on a charging pad.

Such wireless charging techniques include an electromagnetic induction method using a coil, a resonance method using resonance, and a radio frequency (RF) / microwave radiation (RF) method of converting electrical energy into microwave.

A method of transmitting power by wireless charging is a method of transmitting power between a first coil of a transmitting terminal and a second coil of a receiving terminal. The transmitting end generates a magnetic field and the receiving end induces or resonates with the change of the magnetic field to generate energy.

The conventional wireless power transmitter has difficulty in detecting foreign matter or checking the misalignment state when it is placed in a power receiving terminal.

In addition, the wireless power transmitter has been provided with a collective charging according to the electric power set at the time of charging the plurality of receiving terminals.

Various embodiments of the present invention disclose a multiple wireless charging method that uses information where a power receiving terminal is located in a wireless power transmitter and an electronic device including the method.

In order to solve the above-mentioned problems or other problems, a method according to various embodiments, for example, a wireless charging method of an electronic device for supplying power wirelessly, includes the steps of receiving at least one power reception Measuring a received signal strength associated with a local communication signal from the devices; Determining a charge priority among the one or more power receiving devices based on the measured received signal strength; And wirelessly supplying power to the one or more power receiving devices based at least on the priority.

[0008] In order to solve the above-mentioned problems or other problems, a method according to various embodiments, for example, a wireless charging method of an electronic device, includes the steps of sensing the position of one or more external devices placed on a charging pad; Determining a charge priority based at least on the sensed location; And determining an amount of transmit power based at least on the priority.

In order to solve the aforementioned problems or other problems, an electronic device according to various embodiments includes, for example, a charging pad capable of supplying power wirelessly; A communication unit capable of performing close range communication; Memory; And a processor configured to measure a received signal strength associated with a local communication signal from the one or more power receiving devices that are at least partially located on the charging pad and to receive the one or more power receiving Determine charging priorities among the devices, and control power to be supplied wirelessly to the one or more power receiving devices based at least on the priority.

In order to solve the above-mentioned problems or other problems, an electronic device according to various embodiments includes, for example, a charging pad capable of supplying electric power wirelessly; A communication unit capable of performing close range communication; Memory; And a processor, wherein the processor senses the position of the one or more external devices placed on the charging pad, determines a charging priority based at least on the sensed position, and determines a transmission power amount based at least on the priority .

The multiple wireless charging method using short range communication according to various embodiments of the present invention and the electronic apparatus including the method can facilitate priority of charging, detection of foreign matter, detection of misalignment, etc. by using short range communication .

Figure 1 illustrates an electronic device in a network environment in accordance with various embodiments of the present invention.
2 is a block diagram of an electronic device in accordance with various embodiments of the present invention.
3 is a block diagram of a program module in accordance with various embodiments of the present invention.
4 is a block diagram of an electronic device according to various embodiments of the present invention.
5A is a flow diagram of a method for an electronic device according to various embodiments of the present invention to measure a position on a charge pad of a power receiving device (PRU).
FIG. 5B is a flowchart of a method of charging a power receiving apparatus according to various embodiments of the present invention. FIG.
6A and 6B illustrate how an electronic device according to various embodiments of the present invention measures the position on a charge pad of a power receiving device (PRU).
7A and 7B are flowcharts illustrating a power sharing scheduling method of an electronic device (PTU) according to various embodiments of the present invention.
8 is a diagram illustrating a power sharing scheduling method of an electronic device (PTU) according to various embodiments of the present invention.
9 is a flow diagram of a foreign matter sensing method of an electronic device (PTU) according to various embodiments of the present invention.
FIGS. 10A and 10B are diagrams illustrating a foreign matter detection method of an electronic device (PTU) according to various embodiments of the present invention.
11 is a flow chart of charge re-establishment according to an alignment change of a power receiving device of an electronic device (PTU) according to various embodiments of the present invention.
12 is a flowchart illustrating a method of detecting misalignment of a power receiving device (PRU) according to various embodiments of the present invention.
13 is a diagram illustrating a method of detecting misalignment between an electronic device (PTU) and a power receiving device (PRU) according to various embodiments of the present invention.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. It is to be understood that the embodiments and terminologies used herein are not intended to limit the invention to the particular embodiments described, but to include various modifications, equivalents, and / or alternatives of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar components. The singular expressions may include plural expressions unless the context clearly dictates otherwise. In this document, the expressions "A or B" or "at least one of A and / or B" and the like may include all possible combinations of the items listed together. Expressions such as " first, "" second," " first, "or" second, " But is not limited to those components. When it is mentioned that some (e.g., first) component is "(functionally or communicatively) connected" or "connected" to another (second) component, May be connected directly to the component, or may be connected through another component (e.g., a third component).

In this document, the term " configured to (or configured) to "as used herein is intended to encompass all types of hardware, software, , "" Made to "," can do ", or" designed to ". In some situations, the expression "a device configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be implemented by executing one or more software programs stored in a memory device or a dedicated processor (e.g., an embedded processor) , And a general purpose processor (e.g., a CPU or an application processor) capable of performing the corresponding operations.

Electronic devices in accordance with various embodiments of the present document may be used in various applications such as, for example, smart phones, tablet PCs, mobile phones, videophones, electronic book readers, desktop PCs, laptop PCs, netbook computers, workstations, a portable multimedia player, an MP3 player, a medical device, a camera, or a wearable device. Wearable devices may be of the type of accessories (eg, watches, rings, bracelets, braces, necklaces, glasses, contact lenses or head-mounted-devices (HMD) (E.g., a skin pad or tattoo), or a bio-implantable circuit. In some embodiments, the electronic device may be, for example, a television, a digital video disk (Such as Samsung HomeSync ^TM , Apple TV ^TM , or Google TV ^TM ), which are used in home appliances such as home appliances, audio, refrigerators, air conditioners, vacuum cleaners, ovens, microwave ovens, washing machines, air cleaners, set top boxes, home automation control panels, , A game console (e.g., Xbox ^TM , PlayStation ^TM ), an electronic dictionary, an electronic key, a camcorder, or an electronic photo frame.

In an alternative embodiment, the electronic device may be any of a variety of medical devices (e.g., various portable medical measurement devices such as a blood glucose meter, a heart rate meter, a blood pressure meter, or a body temperature meter), magnetic resonance angiography (MRA) A navigation system, a global navigation satellite system (GNSS), an event data recorder (EDR), a flight data recorder (FDR), an automobile infotainment device, a marine electronic equipment (For example, marine navigation systems, gyro compasses, etc.), avionics, security devices, head units for vehicles, industrial or domestic robots, drones, ATMs at financial institutions, of at least one of the following types of devices: a light bulb, a fire detector, a fire alarm, a thermostat, a streetlight, a toaster, a fitness device, a hot water tank, a heater, a boiler, . According to some embodiments, the electronic device may be a piece of furniture, a building / structure or part of an automobile, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g., Gas, or radio wave measuring instruments, etc.). In various embodiments, the electronic device is flexible or may be a combination of two or more of the various devices described above. The electronic device according to the embodiment of the present document is not limited to the above-described devices. In this document, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

Referring to Figure 1, in various embodiments, an electronic device 101 in a network environment 100 is described. The electronic device 101 may include a bus 110, a processor 120, a memory 130, an input / output interface 150, a charging unit 160, and a communication interface 170. In some embodiments, the electronic device 101 may omit at least one of the components or additionally include other components. The bus 110 may include circuitry to connect the components 110-170 to one another and to communicate communications (e.g., control messages or data) between the components. Processor 120 may include one or more of a central processing unit, an application processor, or a communications processor (CP). The processor 120 may perform computations or data processing related to, for example, control and / or communication of at least one other component of the electronic device 101.

Memory 130 may include volatile and / or non-volatile memory. Memory 130 may store instructions or data related to at least one other component of electronic device 101, for example. According to one embodiment, the memory 130 may store software and / or programs 140. The program 140 may include, for example, a kernel 141, a middleware 143, an application programming interface (API) 145, and / or an application program . At least some of the kernel 141, middleware 143, or API 145 may be referred to as an operating system. The kernel 141 may include system resources used to execute an operation or function implemented in other programs (e.g., middleware 143, API 145, or application program 147) (E.g., bus 110, processor 120, or memory 130). The kernel 141 also provides an interface to control or manage system resources by accessing individual components of the electronic device 101 in the middleware 143, API 145, or application program 147 .

The middleware 143 can perform an intermediary role such that the API 145 or the application program 147 can communicate with the kernel 141 to exchange data. In addition, the middleware 143 may process one or more task requests received from the application program 147 according to the priority order. For example, middleware 143 may use system resources (e.g., bus 110, processor 120, or memory 130, etc.) of electronic device 101 in at least one of application programs 147 Prioritize, and process the one or more task requests. The API 145 is an interface for the application 147 to control the functions provided by the kernel 141 or the middleware 143. The API 145 is an interface for controlling the functions provided by the application 141. For example, An interface or a function (e.g., a command). Output interface 150 may be configured to communicate commands or data entered from a user or other external device to another component (s) of the electronic device 101, or to another component (s) of the electronic device 101 ) To the user or other external device.

The charging unit 160 can supply power to another electronic device (PRU, e.g., 201 in Fig. 2) by a magnetic resonance method, a magnetic induction method, or an electromagnetic wave method. The charging unit 160 may include a charging pad that can be charged by another electronic device (PRU, e.g., 201 of FIG. 2) on the pad. The filling pad may include features or faces such that other electronic devices (PRU, e.g., 201 of FIG. 2) may be placed. The charging unit 160 may further include an additional circuit for wireless charging, for example, a coil loop, a resonant circuit, or a rectifier.

The communication interface 170 establishes communication between the electronic device 101 and an external device (e.g., the first external electronic device 102, the second external electronic device 104, or the server 106) . For example, communication interface 170 may be connected to network 162 via wireless or wired communication to communicate with an external device (e.g., second external electronic device 104 or server 106).

The wireless communication may include, for example, LTE, LTE-A (LTE Advance), code division multiple access (CDMA), wideband CDMA (WCDMA), universal mobile telecommunications system (UMTS), wireless broadband (WiBro) System for Mobile Communications), and the like. According to one embodiment, the wireless communication may be wireless communication, such as wireless fidelity (WiFi), Bluetooth, Bluetooth low power (BLE), Zigbee, NFC, Magnetic Secure Transmission, Frequency (RF), or body area network (BAN). According to one example, wireless communication may include GNSS. GNSS may be, for example, Global Positioning System (GPS), Global Navigation Satellite System (Glonass), Beidou Navigation Satellite System (Beidou) or Galileo, the European global satellite-based navigation system. Hereinafter, in this document, "GPS" can be used interchangeably with "GNSS ". The wired communication may include, for example, at least one of a universal serial bus (USB), a high definition multimedia interface (HDMI), a recommended standard 232 (RS-232), a power line communication or a plain old telephone service have. Network 162 may include at least one of a telecommunications network, e.g., a computer network (e.g., LAN or WAN), the Internet, or a telephone network.

Each of the first and second external electronic devices 102, 104 may be the same or a different kind of device as the electronic device 101. According to various embodiments, all or a portion of the operations performed in the electronic device 101 may be performed in one or more other electronic devices (e.g., electronic devices 102, 104, or server 106). According to the present invention, when electronic device 101 is to perform a function or service automatically or on demand, electronic device 101 may perform at least some functions associated therewith instead of, or in addition to, (E.g., electronic device 102, 104, or server 106) may request the other device (e.g., electronic device 102, 104, or server 106) Perform additional functions, and forward the results to the electronic device 101. The electronic device 101 may process the received results as is or additionally to provide the requested functionality or services. For example, Cloud computing, distributed computing, or client-server computing techniques can be used.

2 is a block diagram of a power receiving apparatus 201 according to various embodiments. The power receiving apparatus 201 includes at least one processor (e.g., AP) 210, a communication module 220, a subscriber identification module 224, a memory 230, a sensor module 240, an input device 250, A display 260, an interface 270, an audio module 280, a camera module 291, a power management module 295, a battery 296, an indicator 297, and a power receiver 298 . The processor 210 may control a number of hardware or software components connected to the processor 210, for example, by operating an operating system or an application program, and may perform various data processing and operations. The processor 210 may further comprise a graphics processing unit (GPU) and / or an image signal processor, for example, a system on chip (SoC) . Processor 210 may include at least some of the components shown in Figure 2 (e.g., cellular module 221) It may hamhal processor 210 other components: processing by loading the command or data received from at least one (e.g., non-volatile memory) in the volatile memory) and can store the result data into the nonvolatile memory.

May have the same or similar configuration as communication module 220 (e.g., communication interface 170). The communication module 220 may include, for example, a cellular module 221, a WiFi module 223, a Bluetooth module 225, a GNSS module 227, an NFC module 228 and an RF module 229 have. The cellular module 221 can provide voice calls, video calls, text services, or Internet services, for example, over a communication network. According to one embodiment, the cellular module 221 may utilize a subscriber identity module (e.g., a SIM card) 224 to perform the identification and authentication of the power receiving device 201 within the communication network. According to one embodiment, the cellular module 221 may perform at least some of the functions that the processor 210 may provide. According to one embodiment, the cellular module 221 may comprise a communications processor (CP). At least some (e.g., two or more) of the cellular module 221, the WiFi module 223, the Bluetooth module 225, the GNSS module 227, or the NFC module 228, according to some embodiments, (IC) or an IC package. The RF module 229 can, for example, send and receive communication signals (e.g., RF signals). The RF module 229 may include, for example, a transceiver, a power amplifier module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna. According to another embodiment, at least one of the cellular module 221, the WiFi module 223, the Bluetooth module 225, the GNSS module 227, or the NFC module 228 transmits / receives an RF signal through a separate RF module . The subscriber identification module 224 may include, for example, a card or an embedded SIM containing a subscriber identity module, and may include unique identification information (e.g., ICCID) or subscriber information (e.g., IMSI (international mobile subscriber identity).

Memory 230 (e.g., memory 130) may include, for example, internal memory 232 or external memory 234. Volatile memory (e.g., a DRAM, an SRAM, or an SDRAM), a non-volatile memory (e.g., an OTPROM, a PROM, an EPROM, an EEPROM, a mask ROM, a flash ROM , A flash memory, a hard drive, or a solid state drive (SSD). The external memory 234 may be a flash drive, for example, a compact flash (CF) ), A micro-SD, a mini-SD, an extreme digital (xD), a multi-media card (MMC), a memory stick, etc. The external memory 234 is connected to the power receiving apparatus 201 Functionally or physically.

The sensor module 240 may measure the physical quantity or detect the operating state of the power receiving device 201, for example, and convert the measured or sensed information into an electrical signal. The sensor module 240 includes a gesture sensor 240A, a gyro sensor 240B, an air pressure sensor 240C, a magnetic sensor 240D, an acceleration sensor 240E, a grip sensor 240F, A temperature sensor 240G, a UV sensor 240G, a color sensor 240H (e.g., an RGB (red, green, blue) sensor), a living body sensor 240I, And a sensor 240M. Additionally or alternatively, the sensor module 240 may be configured to perform various functions such as, for example, an e-nose sensor, an electromyography (EMG) sensor, an electroencephalograph (EEG) sensor, an electrocardiogram An infrared (IR) sensor, an iris sensor, and / or a fingerprint sensor. The sensor module 240 may further include a control circuit for controlling at least one or more sensors belonging to the sensor module 240. The power receiving device 201 may further include a processor configured to control the sensor module 240 either as part of the processor 210 or separately so that the processor 210 is in a sleep state while the processor 210 is in a sleep state , And the sensor module 240 can be controlled.

The input device 250 may include, for example, a touch panel 252, a (digital) pen sensor 254, a key 256, or an ultrasonic input device 258. As the touch panel 252, for example, at least one of an electrostatic type, a pressure sensitive type, an infrared type, and an ultrasonic type can be used. Further, the touch panel 252 may further include a control circuit. The touch panel 252 may further include a tactile layer to provide a tactile response to the user. (Digital) pen sensor 254 may be part of, for example, a touch panel or may include a separate recognition sheet. Key 256 may include, for example, a physical button, an optical key, or a keypad. The ultrasonic input device 258 can sense the ultrasonic wave generated by the input tool through the microphone (e.g., the microphone 288) and confirm the data corresponding to the ultrasonic wave detected.

The display 260 may include a panel 262, a hologram device 264, a projector 266, and / or control circuitry for controlling them. The panel 262 may be embodied, for example, flexibly, transparently, or wearably. The panel 262 may comprise a touch panel 252 and one or more modules. According to one embodiment, the panel 262 may include a pressure sensor (or force sensor) capable of measuring the intensity of the pressure on the user's touch. The pressure sensor may be integrated with the touch panel 252 or may be implemented by one or more sensors separate from the touch panel 252. The hologram device 264 can display a stereoscopic image in the air using interference of light. The projector 266 can display an image by projecting light onto a screen. The screen may be located, for example, inside or outside the power receiving apparatus 201. The interface 270 may include, for example, an HDMI 272, a USB 274, an optical interface 276, or a D-sub (D-subminiature) 278. The interface 270 may, for example, be included in the communication interface 170 shown in FIG. Additionally or alternatively, the interface 270 may include, for example, a mobile high-definition link (MHL) interface, an SD card / multi-media card (MMC) interface, or an infrared data association have.

The audio module 280 can, for example, convert sound and electrical signals in both directions. At least some of the components of the audio module 280 may be included, for example, in the input / output interface 145 shown in FIG. The audio module 280 may process sound information input or output through, for example, a speaker 282, a receiver 284, an earphone 286, a microphone 288, or the like. The camera module 291 is, for example, a device capable of capturing still images and moving images, and according to one embodiment, one or more image sensors (e.g., a front sensor or a rear sensor), a lens, an image signal processor (ISP) , Or flash (e.g., an LED or xenon lamp, etc.). The power management module 295 can manage the power of the power receiving device 201, for example. According to one embodiment, the power management module 295 may include a power management integrated circuit (PMIC), a charging IC, or a battery or fuel gauge. The PMIC may have a wired and / or wireless charging scheme. The wireless charging scheme may include, for example, a magnetic resonance scheme, a magnetic induction scheme, or an electromagnetic wave scheme, and may further include an additional circuit for wireless charging, for example, a coil loop, a resonant circuit, have. The battery gauge can measure, for example, the remaining amount of the battery 296, the voltage during charging, the current, or the temperature. The battery 296 may include, for example, a rechargeable battery and / or a solar cell.

The indicator 297 may indicate a specific state of the power receiving apparatus 201 or a part thereof (e.g., the processor 210), for example, a boot state, a message state,

The power receiver 298 may include a circuit or module capable of receiving power from the electronic device 101 wirelessly. The power receiver 298 can receive power from another electronic device (PTU, e.g., 101 in FIG. 1) in a magnetic resonance, magnetic induction, or electromagnetic wave manner. The power receiving unit 298 may further include an additional circuit for wireless charging, for example, a coil loop, a resonant circuit, or a rectifier. Power receiving apparatus 201 is, for example, Mobile TV-enabled devices capable of processing the media data according to a standard such as DMB (digital multimedia broadcasting), DVB (digital video broadcasting), or MediaFLO (mediaFlo ^TM) ( For example, a GPU). Each of the components described in this document may be composed of one or more components, and the name of the component may be changed according to the type of the electronic device. In various embodiments, an electronic device (e. G., Power receiving device 201) may have some components omitted, or may include additional components, or some of the components may be combined into one entity, It is possible to perform the functions of the corresponding components before coupling.

3 is a block diagram of a program module according to various embodiments. According to one embodiment, the program module 310 (e.g., program 140) includes an operating system and / or an operating system that controls resources associated with an electronic device (e.g., electronic device 101, power receiving device 201) (E.g., application programs 147) running on the system. The operating system may include, for example, Android ^TM , iOS ^TM , Windows ^TM , Symbian ^TM , Tizen ^TM , or Bada ^TM . 3, program module 310 includes a kernel 320 (e.g., kernel 141), middleware 330 (e.g., middleware 143), API 360 (e.g., API 145) ), And / or an application 370 (e.g., an application program 147). At least a portion of the program module 310 may be preloaded on an electronic device, 102 and 104, a server 106, and the like).

The kernel 320 may include, for example, a system resource manager 321 and / or a device driver 323. The system resource manager 321 can perform control, allocation, or recovery of system resources. According to one embodiment, the system resource manager 321 may include a process manager, a memory manager, or a file system manager. The device driver 323 may include, for example, a display driver, a camera driver, a Bluetooth driver, a shared memory driver, a USB driver, a keypad driver, a WiFi driver, an audio driver, or an inter-process communication . The middleware 330 may provide various functions through the API 360, for example, to provide functions that are commonly needed by the application 370 or allow the application 370 to use limited system resources within the electronic device. Application 370 as shown in FIG. According to one embodiment, the middleware 330 includes a runtime library 335, an application manager 341, a window manager 342, a multimedia manager 343, a resource manager 344, a power manager 345, a database manager The location manager 350, the graphic manager 351, or the security manager 352. In this case, the service manager 341 may be a service manager, a service manager, a service manager, a package manager 346, a package manager 347, a connectivity manager 348, a notification manager 349,

The runtime library 335 may include, for example, a library module that the compiler uses to add new functionality via a programming language while the application 370 is executing. The runtime library 335 may perform input / output management, memory management, or arithmetic function processing. The application manager 341 can manage the life cycle of the application 370, for example. The window manager 342 can manage GUI resources used in the screen. The multimedia manager 343 can recognize the format required for reproducing the media files and can perform encoding or decoding of the media file using a codec according to the format. The resource manager 344 can manage the source code of the application 370 or the space of the memory. The power manager 345 may, for example, manage the capacity or power of the battery and provide the power information necessary for operation of the electronic device. According to one embodiment, the power manager 345 may interoperate with a basic input / output system (BIOS). The database manager 346 may create, retrieve, or modify the database to be used in the application 370, for example. The package manager 347 can manage installation or update of an application distributed in the form of a package file.

The connectivity manager 348 may, for example, manage the wireless connection. The notification manager 349 may provide the user with an event such as, for example, an arrival message, an appointment, a proximity notification, and the like. The location manager 350 can manage the location information of the electronic device, for example. The graphic manager 351 may, for example, manage the graphical effects to be presented to the user or a user interface associated therewith. Security manager 352 may provide, for example, system security or user authentication. According to one embodiment, the middleware 330 may include a telephony manager for managing the voice or video call function of the electronic device, or a middleware module capable of forming a combination of the functions of the above-described components . According to one embodiment, the middleware 330 may provide a module specialized for each type of operating system. Middleware 330 may dynamically delete some existing components or add new ones. The API 360 may be provided in a different configuration depending on the operating system, for example, as a set of API programming functions. For example, for Android or iOS, you can provide a single API set for each platform, and for Tizen, you can provide two or more API sets for each platform.

The application 370 may include a home 371, a dialer 372, an SMS / MMS 373, an instant message 374, a browser 375, a camera 376, an alarm 377, Contact 378, voice dial 379, email 380, calendar 381, media player 382, album 383, watch 384, healthcare (e.g., measuring exercise or blood glucose) , Or environmental information (e.g., air pressure, humidity, or temperature information) application. According to one embodiment, the application 370 may include an information exchange application capable of supporting the exchange of information between the electronic device and the external electronic device. The information exchange application may include, for example, a notification relay application for communicating specific information to an external electronic device, or a device management application for managing an external electronic device. For example, the notification delivery application can transmit notification information generated in another application of the electronic device to the external electronic device, or receive notification information from the external electronic device and provide the notification information to the user. The device management application may, for example, control the turn-on / turn-off or brightness (or resolution) of an external electronic device in communication with the electronic device (e.g., the external electronic device itself Control), or install, delete, or update an application running on an external electronic device. According to one embodiment, the application 370 may include an application (e.g., a healthcare application of a mobile medical device) designated according to the attributes of the external electronic device. According to one embodiment, the application 370 may include an application received from an external electronic device. At least some of the program modules 310 may be implemented (e.g., executed) in software, firmware, hardware (e.g., processor 210), or a combination of at least two of the same, Program, routine, instruction set or process.

4 is a block diagram of an electronic device 401 (e.g., 101 of FIG. 1) in accordance with various embodiments of the present invention.

The electronic apparatus 401 (e.g., 101 in FIG. 1) is a power transmitting unit (PTU), and can be a device capable of transmitting power wirelessly. The electronic device 401 (e.g., 101 of FIG. 1) may supply power to another electronic device (e.g., 201 of FIG. 2) in a magnetically inductive or resonant inductive manner.

The electronic device 401 (e.g., 101 of FIG. 1) may include a charging unit 410, a communication unit 420, a process 430, and a memory 440.

The charging unit 410 can supply power to another electronic device (PRU, e.g., 201 in FIG. 2) by a magnetic resonance method, a magnetic induction method, or an electromagnetic wave method. The charging portion 410 may include a charging pad that can be recharged by another electronic device (PRU, e.g., 201 of FIG. 2) on the pad. The filling pad may include features or faces such that other electronic devices (PRU, e.g., 201 of FIG. 2) may be placed. The charging unit 410 may further include an additional circuit for wireless charging, for example, a coil loop, a resonant circuit, or a rectifier. The charging unit 410 may be the same as the charging unit 160 of FIG.

2) 201 is a power receiving unit (hereinafter, referred to as PRU), which is connected to an electronic device 401 (e.g., 101 in FIG. 1) in a magnetic resonance, magnetic induction, Lt; / RTI > 2) 201 is a power receiving unit (hereinafter, referred to as PRU), which is connected to an electronic device 401 (e.g., 101 in FIG. 1) in a magnetic resonance, magnetic induction, For example, a coil loop, a resonant circuit, or a rectifier for wireless charging so as to be able to receive power from the power source. Other electronic devices (PRUs, e.g., 201 in FIG. 2) may include communication modules (e.g., 220 in FIG. 2) to enable near field communication (e.g., low power Bluetooth (BLE) communication).

The communication unit 420 may have the same or similar configuration as the communication module 220 of FIG. The communication unit 420 may include a cellular module, a WiFi module, a Bluetooth module, a bluetooth low energy (BLE) module, a zigbee module, a WiFi direct module, a GNSS module, And an RF module.

According to some embodiments, at least some of the cellular module, the WiFi module, the Bluetooth module, the bluetooth low energy (BLE) module, the zigbee module, the WiFi direct module, the GNSS module or the NFC module And may be included in one integrated chip (IC) or IC package.

The RF module is capable of transmitting and receiving, for example, a communication signal (e.g., an RF signal). The RF module may include, for example, a transceiver, a power amp module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna.

According to another embodiment, at least one of the cellular module, the WiFi module, the Bluetooth module, the GNSS module, or the NFC module can transmit and receive RF signals through separate RF modules.

The communication unit 420 may support short-range communication such as NFC, Bluetooth, a Bluetooth low energy (BLE) module, a zigbee, and a WiFi direct. The local communication signal received through the communication unit 420 may be transmitted to the processor 430.

The communication unit 420 receives the local communication signal received from another electronic device (e.g., 201 in FIG. 2) and transmits information on the received signal strength indication (RSSI) of the local communication signal to the processor 430 .

The processor 430 may control the power supplied to the charger 410 and the processor 430 may be another electronic device (PRU, e.g., 201 of FIG. 2) disposed on the charger 410 and awaiting charging or charging. And controls the power receiving control signal to be transmitted to another electronic device (for example, 201 in FIG. 2) through the communication unit 420. The power receiving control signal may be transmitted to the other electronic device 201 (see FIG.

The processor 430 is connected to the charger 410 through the communication unit 420 using information on the received signal strength (RSSI) of the local communication signal received from at least one or more other electronic devices (PRUs, e.g., (E. G., 201 of FIG. 2) of the electronic device.

The processor 430 determines the location of at least one or more other electronic devices (PRUs, e.g., 201 in FIG. 2) on the charging unit 410 using information about the received signal strength (RSSI) 410 may determine the charge priorities among at least one or more other electronic devices (PRUs, e.g., 201 of FIG. 2).

For example, the processor 430 may determine that the other electronic device located at the center of the charger 410 among the at least one or more other electronic devices (PRUs, e.g., 201 of FIG. 2) (PRU, for example, 201 in Fig. 2) disposed in the vicinity of the front end

According to various embodiments, the processor 430 may be configured to control the charging of the charging unit 410 such that at least one or more of the other electronic devices (e.g., PRU 201 in FIG. 2) Generates a power reception control signal so that at least one or more other electronic devices (PRU 201 in Fig. 2) disposed can receive power differently according to the position on the charging unit 410, and transmits at least one To another electronic device (PRU, e.g., 201 in Fig. 2).

According to various embodiments, the processor 430 may be configured to control the charging of the charging unit 410 such that at least one or more of the other electronic devices (e.g., PRU 201 in FIG. 2) It is possible to transmit a high power to one region (e.g., the center portion) and to transmit low power to another region (e.g., a peripheral portion) of the charger 410. [

According to various embodiments, the processor 430 may receive information about the received signal strength (RSSI) of a short range communication signal received from at least one or more other electronic devices (PRUs, e.g., 201 of FIG. 2) The communication unit 420 is disposed in one area (e.g., a central area) on the charging unit 410 in order to determine the position of at least one or more other electronic devices (PRU, e.g., 201 in Fig. 2) .

According to various embodiments, the processor 430 may receive information about the received signal strength (RSSI) of a short range communication signal received from at least one or more other electronic devices (PRUs, e.g., 201 of FIG. 2) (PRU, e.g., Fig. 2 (b)) disposed in the charger 410 to determine the position of at least one or more other electronic devices (PRU, e.g., 201 of Fig. 2) And the measured position may be stored in the memory 440. [0034] For example, when another electronic device (PRU, e.g., 201 of FIG. 2) is placed in the center of the charging portion 410 and another electronic device (PRU, e.g., 201 of FIG. 2) The received signal strength (RSSI) of the received local communication signal at the time of placement can be measured twice each.

According to various embodiments, the processor 430 may be configured to determine whether the object placed in the charging unit 410 is another electronic device (PRU, e.g., 201 of FIG. 2) It is possible to judge based on the information on the signal strength (RSSI) and the information on the charge supply power. For example, the electronic device 401 (e.g., 101 of FIG. 1) may receive information about the charge received power from the other electronic device (PRU, e.g., 201 of FIG. 2) . The processor 430 may calculate the total power received by another electronic device (PRU, for example, 201 in Fig. 2) that is being charged using the information on the received charge received power. At this time, if the charge supply power supplied from the electronic device 401 (e.g., 101 in FIG. 1) is smaller than the total charge received by the other electronic device, the processor 430 can charge the chargeable electronic device PRU, (E.g., 201 in FIG. 2) is not disposed but an object (e.g., an NFC card) is disposed, and the charging unit 410 can not supply electric power according to the determination result. However, even if the charge supply power supplied from the electronic apparatus 401 (e.g., 101 in Fig. 1) is smaller than the total power received by another electronic apparatus (PRU, e.g., 201 in Fig. 2) It is determined that the received signal strength RSSI is within the low efficiency region on the charging unit 410 and the charging unit 410 can be controlled so that the wireless charging can be continued.

According to various embodiments, the processor 430 may determine whether another electronic device (PRU, e.g., 201 of FIG. 2) has failed to align on the charger 410 or has left the charger 410, PRU, for example, 201 in FIG. 2), it is possible to transmit the scan signal by controlling the communication unit 420 to inform the status of misalignment.

According to various embodiments, other electronic devices (PRUs, e.g., 201 of FIG. 2) are arranged on the charger 410, if the current charging voltage is below a reference voltage (e.g., an undervoltage lockout voltage) It is judged that it is defective or deviated from the charging part 410. If another electronic device (PRU, e.g., 201 of FIG. 2) determines that a misalignment on charger 410 or a departure from charger 410, it may send a signal to the electronic device 410 regarding a wireless charge interruption . At the same time, another electronic device (e.g., 201 of FIG. 2) may send an advertisement to the electronic device 401 (e.g., 101 of FIG. 1) for a period of time and /

The electronic device 401 (e.g., 101 in FIG. 1) that has received the advertisement signal for a predetermined time and / or a predetermined number of times may transmit the scan signal to another electronic device (PRU, e.g., 201 in FIG. 2) .

At this time, if the received signal strength (RSSI) of the scan signal is equal to or higher than the reference value, the other electronic device (PRU, for example, 201 in FIG. 2) receiving the scan signal from the electronic device 401 (For example, lit, sound, vibration). Other electronic devices (e. G., 201 in FIG. 2) that have received the scan signal from the electronic device 401 (e. G., 101 in FIG. 1), if the received signal strength (RSSI) It can be determined that the wireless charging has been completed.

The memory 440 may include, for example, an internal memory or an external memory. The internal memory can be, for example, a volatile memory (e.g., a DRAM, an SRAM, or an SDRAM), a nonvolatile memory (e.g., an OTPROM, a PROM, an EPROM, an EEPROM, a mask ROM, , A hard drive, or a solid state drive (SSD). The external memory may be a flash drive, for example, a compact flash (CF), a secure digital (SD) An external memory, a Mini-SD, an extreme digital (xD), a multi-media card (MMC) or a memory stick, etc. The external memory may be functionally or programmably connected to the electronic device 401 It can be physically connected.

The electronic device 401 (e.g., 101 in FIG. 1) may include an Electro Magnetic Resonance (EMR) pad or a touch pad. The EMR pad or the touch pad may be disposed on the charging unit 410. The electronic device 401 (e.g., 101 of FIG. 1) may use an EMR pad or a touchpad to locate a location on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) . The electronic device 401 (e.g., 101 of FIG. 1) is mounted on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) placed on the front pad 410 in accordance with an electrical change on the EMR pad or touch pad. Location can be grasped.

5A illustrates a method of measuring the position of an electronic device (PTU) 401 according to various embodiments of the present invention on a charging portion 410 of a power receiving device (PTU, e.g., power receiving device 201 of FIG. 2) It is a flowchart.

6A and 6B illustrate an example of a charging portion 410 of a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) of an electronic device 401 (e.g., 101 of FIG. 1) Fig. 7 is a diagram showing a method for measuring a position of an image on a recording medium.

When the electronic device PTU 401 enters the RSSI setting mode, the PTU 401 transmits a local communication signal (for example, a low-power communication signal) received from a power receiving device (PRU, e.g., power receiving device 201 in FIG. 2) (PTU, for example, power receiving apparatus 201 in FIG. 2) on the charging unit 410 and the received signal strength RSSI of the advertisement signal (advertisement) in Bluetooth (BLE).

When the electronic device (PTU) 401 enters the received signal strength (RSSI) setting mode, the electronic device 401 (e.g., 101 of FIG. 1) (E. G., Low power Bluetooth (BLE)). ≪ / RTI >

After the electronic device (PTU, 401) enters the received signal strength (RSSI) setting mode, the power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) When a signal (e.g., low power Bluetooth (BLE)) is requested, the power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) sends an advertisement signal to the electronic device . The electronic device PTU 401 may store and store a received signal strength RSSI of an advertisement signal and a power receiving device (PTU, e.g., power receiving device 201 of FIG. 2)

The electronic device (PTU) 401 is configured to receive the power from the power receiving device (PTU) 401 when the power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) (RSSI) of a short range communication signal (e.g., an advertisement signal in low power Bluetooth (BLE)) received from a PRU (e.g., power receiving device 201 of FIG. 2) have.

The electronic device (PTU) 401 is operable, at operation 503, to transmit power to the power receiving device (PRU) when the power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) (RSSI) of a short range communication signal (e.g., an advertisement signal in low power Bluetooth (BLE)) received from a PRU (e.g., power receiving device 201 of FIG. 2) have.

When the power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) is located at the first location on the electronic device (PTU, 401), the first location is located at the first location May mean a case where a power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) is disposed. The first position may be, for example, a center portion on the charger 410.

When the power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) is located at a second location on the electronics (PTU, 401), the second location is located at the second location May mean a case where a power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) is disposed. The second location may be, for example, a peripheral portion on the charging pad 420.

5B is a flow diagram of a method of charging a power receiving device (PTU, e.g., power receiving device 201 of FIG. 2) according to various embodiments of the present invention.

The electronic device (PTU) 401 is connected to the power receiving device (PTU) 401 when at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) (RSSI) of a short range communication signal (e.g., an advertisement signal in low power Bluetooth (BLE)) received from a PRU (e.g., power receiving device 201 of FIG. 2) have.

The electronic device PTU 401 is connected to at least one power receiving device (PRU), e.g., the power receiving device 201 of FIG. 2, based on the received signal strength (RSSI) of the measured advertisement (advertisement) ) Can be determined.

The electronic device (PTU, 401) is capable of wirelessly powering at least one power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) placed on the charging pad, based on priority, have.

6A and 6B, in order for the electronic device PTU 401 to enter a received signal strength (RSSI) set mode, a power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) (PTU) 401. In this case,

6A illustrates a method of measuring received signal strength (RSSI) when a power receiving apparatus (PRU, e.g., power receiving apparatus 201 of FIG. 2) is located at a first location (RSSI) measurement when a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) is located in a second location (e.g., Fig.

The electronic device PTU 401 receives the received signal strength (RSSI) of the measured advertisement signal when the power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) _{location 1} , The received signal strength (RSSI) of the measured advertisement signal when in the first position is referred to as RSSI _{location 2} in the memory 440. The received signal strength (RSSI)

The electronic device (PTU) 401 can perform a charging operation by prioritizing among the power receiving devices (PRUs) being wirelessly charged according to the measured RSSI.

The electronic device PTU 401 may monitor in real time the received signal strength (RSSI) of a local communication signal (e.g., low power Bluetooth (BLE)) from power receiving devices (PRUs) being charged.

If the received signal strength (RSSI) of a local communication signal (e.g., low power Bluetooth (BLE)) monitored by the electronic device PTU 401 in real time is RSSI _dynamic , The priority may be expressed by the following equation (1).

According to Equation (1), the closer the priority is to 1, the higher the priority.

According to various embodiments of the present invention, as the power receiving apparatus PRU is disposed at the first position (e.g., the center portion) on the charging unit 410 of the electronic device (PTU) 401, The priority of charging may be lower than that of the other power receiving apparatuses PRU as the power receiving apparatus PRU is high and the power receiving apparatus PRU is disposed at a second position (e.g., a peripheral portion) on the charging unit 410 of the electronic device PTU 401 .

7A and 7B are flowcharts illustrating a power sharing scheduling method of an electronic device (PTU) 401 according to various embodiments of the present invention.

7A is a flowchart illustrating a power sharing scheduling method when a new power receiving unit (PRU) of an electronic device (PTU) 401 according to various embodiments of the present invention is added.

In operation 701, the electronic device (PTU) 401 may charge, in priority order, at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) located on the charging portion 410. The electronic device PTU 401 is configured to transmit power to at least one power receiving apparatus (PRU), such as a power receiving apparatus 201 of FIG. 2, PRU), fast charge, or transmit more power.

At this time, the electronic device (PTU, 401) can charge at least one power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) according to the priority order based on Equation (1).

In various embodiments, the electronic device (PTU) 401 may include an Electro Magnetic Resonance (EMR) pad or a touch pad. The EMR pad or the touch pad may be disposed on the charging unit 410. The electronic device 401 (e.g., 101 of FIG. 1) may use an EMR pad or a touchpad to locate a location on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) . The electronic device PTU 401 may perform charging with higher priority as the at least one power receiving device (PRU, e.g., the power receiving device 201 of FIG. 2) is located at the center of the charging section 410 , And charging can be performed with lower priority as the battery is in the peripheral portion.

In operation 703, the electronic device (PTU) 401 determines whether at least one new power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) has been added for charging on the charging portion 410 . In operation 703, an electronic device (PTU) 401 receives an advertisement signal from a newly added power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) (The power receiving apparatus 201 of FIG. 2) is added to the charging unit 410 for charging. If a new power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) is not added, it may branch to 701 operation.

When a new power receiving device (PRU, e.g., power receiving device 201 in Fig. 2) is added, it can branch to 705 operation.

In operation 705, the electronic device (PTU) 401 determines whether the sum of the received charging power of each of the currently receiving power receiving devices (PRUs, e.g., power receiving devices 201 of FIG. 2) It can be determined whether or not the power that can be supplied is satisfied.

In operation 705, the electronic device (PTU) 401 determines whether the sum of the received charging power of each of the currently receiving power receiving devices (PRUs, e.g., power receiving devices 201 of FIG. 2) It is possible to judge whether or not it is within the power range that can be supplied.

The electronic device PTU 401 transmits information about the received charging power of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in FIG. 2) to the currently charging power receiving apparatus (PRU, Device 201). ≪ / RTI >

The electronic device (PTU) 401 is configured to determine whether the sum of the received charging powers of the currently receiving power receiving apparatus (PRU, e.g., power receiving apparatus 201 of FIG. 2) If so, you can branch to operation 707.

The electronic device PTU 401 is configured to determine whether the sum of the received charging powers of the currently receiving power receiving apparatus (PRU, e.g., power receiving apparatus 201 of FIG. 2) If so, it can branch to operation 709

In operation 707, the electronic device (PTU, 401) determines whether the sum of the received charging powers of the currently receiving power receiving device (PRU, e.g., power receiving devices 201 of FIG. 2) The PTU 401 can supply the power requested by the power receiving apparatuses (PRUs).

According to various embodiments, in operation 707, the electronic device (PTU) 401 determines whether the sum of the received charging powers of the currently receiving power receiving device (PRU, e.g., power receiving devices 201) (PRU), e.g., the power receiving apparatus 201 of FIG. 2, in order of decreasing priority, and the electronic device (PTU) 401 may perform the 709 operation if it is determined that the power receiving apparatus ) To adjust the maximum charge power.

In operation 709, the electronic device 401 (e.g., 101 of FIG. 1) receives the current charging power receiving device (PRU, e.g., power receiving devices 201 of FIG. 2) according to an adjust power command (PRU) (e.g., the power receiving apparatus 201 in FIG. 2) added in accordance with the priority and transmits an adjust power command for adjusting the respective received charging power, And can charge the receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2).

According to various embodiments, in operation 709, the electronic device (PTU) 401 determines whether the sum of the received charging powers of the currently receiving power receiving device (PRU, e.g., power receiving devices 201 of FIG. 2) 401), the newly added PRU waits for charging and can charge the power receiving apparatus (PRU, for example, power receiving apparatus 201 of FIG. 2) according to the priority order have. For example, it is possible to lower the maximum charge power to power receiving apparatuses (PRUs in the order of lower priority, for example, power receiving apparatuses 201 in FIG. 2). At this time, the power receiving device (PRU, for example, power receiving device 201 of FIG. 2) charged in the first order can always set the maximum charging power at 100%. When adjusting the charging power of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 of FIG. 2), it is possible to adjust 66%, 33%, 25% And may transmit an adjust power command to a power receiving device (PRU, e.g., power receiving device 201 in Fig. 2).

FIG. 7B is a flowchart illustrating a power sharing scheduling method when a power receiving unit (PRU) of an electronic device (PTU) 401 according to various embodiments of the present invention is damped and released.

In operation 711, the electronic device (PTU) 401 may charge, in priority order, at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) located on the charging portion 410.

According to various embodiments, in operation 711, at least one or more power receiving devices (PRUs, e.g., power in FIG. 2) are waiting to be charged if the sum of the current charges is less than the power that the electronics (PTU, 401) (PRU), which is located on the charging unit 410, and transmits an adjust power command to adjust the received charging power of the receiving unit 201 , The power receiving apparatus 201 of FIG. 2) according to the priority order.

At this time, the electronic device (PTU, 401) can charge at least one power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) according to the priority order based on Equation (1). The electronic device PTU 401 is configured to transmit power to at least one power receiving apparatus (PRU), such as a power receiving apparatus 201 of FIG. 2, PRU), fast charge, or transmit more power.

In various embodiments, the electronic device (PTU) 401 may include an Electro Magnetic Resonance (EMR) pad or a touch pad. The EMR pad or the touch pad may be disposed on the charging unit 410. The electronic device 401 (e.g., 101 of FIG. 1) may use an EMR pad or a touchpad to locate a location on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) . The electronic device PTU 401 may perform charging with higher priority as the at least one power receiving device (PRU, e.g., the power receiving device 201 of FIG. 2) is located at the center of the charging section 410 , And charging can be performed with lower priority as the battery is in the peripheral portion.

In operation 713, the electronic device (PTU) 401 determines whether at least one or more charging power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) have completed charging (charging) Can be detected.

In operation 713, the electronic device (PTU) 401 is configured to determine whether the at least one charging power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) has completed charging If not, branch to 711 operation.

In operation 713, when the electronic device (PTU, 401) has completed charging or has left the charging unit 410, at least one charging power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) , The operation branches to 715 operation.

In operation 715, the electronic device (PTU, 401) may determine whether there is at least one power receiving device (PRU, e.g. power receiving device 201 of FIG.

In operation 715, if there is no at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) waiting to be charged, the electronic device (PTU) 401 branches to 711 operation, Device (PRU, e.g., power receiving apparatus 201 in Fig. 2).

In operation 715, the electronic device (PTU) 401 may branch to operation 717 if there is at least one power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) waiting to be charged.

In operation 717, the electronic device (PTU) 401 receives a power control signal for adjusting the received charging power of at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) command.

In operation 717, the electronic device (PTU) 401 transmits the received charging power of at least one or more power receiving apparatuses (PRUs, e.g., power receiving apparatus 201 of FIG. 2) waiting for charging to 100%, 66%, 33% (Power receiving apparatus 201 of FIG. 2, for example) in a charge waiting state in order to adjust an adjust power command (adjust power command) to be adjusted to 2.5W or the like.

In operation 719, the electronic device (PTU) 401 receives an adjust power command to receive at least one of the power receiving devices (PRUs, e.g., power receiving devices 201 of FIG. 2) It can be determined whether it is necessary to adjust the charging power. The electronic device (PTU) 401 may determine whether it is necessary to adjust the received charging power according to the charging rate of at least one or more power receiving devices (PRUs, e.g., power receiving devices 201 of FIG. 2).

In operation 719, the electronic device (PTU) 401 transmits an adjust power command to adjust the received charging power of the charging power receiving device (PRU, e.g., power receiving devices 201 of FIG. 2) If it is not necessary, the power receiving apparatus (PRU, for example, the power receiving apparatus of FIG. 2) including the power receiving apparatuses (PRUs in FIG. 2, (E.g.

In operation 719, the electronic device (PTU) 401 transmits an adjust power command to adjust the received charging power of the charging power receiving device (PRU, e.g., power receiving devices 201 of FIG. 2) If necessary, branching to operation 721 is possible.

In operation 721, it is possible to charge a receiving apparatus having a higher priority among at least one or more power receiving apparatuses (PRUs, for example, power receiving apparatuses 201 in Fig. 2) waiting for charging.

8 is a diagram illustrating a power sharing scheduling method of an electronic device (PTU) 401 according to various embodiments of the present invention.

At reference numeral < 801 >, the electronic device (PTU, 401) can charge at least one power receiving device (PRU, 201).

In the reference numeral 803, when a new power receiving device (PRU, 202) is added during charging of at least one power receiving device (PRU) 201, the electronic device (PTU, 401) Can be charged.

(PTU, 401), when a new power receiving apparatus (PRU, 203) is added during charging of at least one or more power receiving apparatuses (PRU, 201, 202) 202, and 203 are within the power that can be supplied by the electronic device (PTU, 401), and determines whether or not the sum of the received charging powers of the power receiving apparatuses (PRU, 201, 202, and 203 to charge the power receiving devices PRU, 201, 202, and 203 according to the priority order.

The newly added power receiving apparatus PRU 203 is charged according to the priority order or waits for charging until at least one of the power receiving apparatuses PRU 201 and 202 completes charging or leaves the charging unit 410 .

9 is a flowchart of a foreign matter sensing method of an electronic device (PTU) 401 according to various embodiments of the present invention.

In operation 901, the electronic device (PTU) 401 may charge at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) located on the charging portion 410.

At this time, the electronic device (PTU, 401) can charge at least one power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) according to the priority order based on Equation (1).

The electronic device PTU 401 is configured to transmit power to at least one power receiving apparatus (PRU), such as a power receiving apparatus 201 of FIG. 2, PRU), fast charge, or transmit more power.

In various embodiments, the electronic device (PTU) 401 may include an Electro Magnetic Resonance (EMR) pad or a touch pad. The EMR pad or the touch pad may be disposed on the charging unit 410. The electronic device 401 (e.g., 101 of FIG. 1) may use an EMR pad or a touchpad to locate a location on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) . The electronic device PTU 401 may perform charging with higher priority as the at least one power receiving device (PRU, e.g., the power receiving device 201 of FIG. 2) is located at the center of the charging section 410 , And charging can be performed with lower priority as the battery is in the peripheral portion.

In operation 903, the electronic device (PTU) 401 receives a local communication signal (e.g., a low power Bluetooth (BLE) signal) of at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) the received signal strength (RSSI) of a)) it is possible to detect the RSSI _dynamic.

In operation 903, the electronic device (PTU) 401 receives a local communication signal (e. G., A low power Bluetooth &lt; / RTI &gt; signal) monitored from at least one or more power receiving devices (PRU, e.g. power receiving device 201 of FIG. 2) the received signal strength (RSSI) of (BLE)) can measure the RSSI _dynamic.

Measurement, (e.g., Bluetooth low energy (BLE)) local communication signals received signal strength (RSSI) for RSSI _dynamic The received signal strength (RSSI) low when charge being at least one or more power to the low-efficiency than that is the basis for the low efficiency of the It can be determined that there is a receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2).

If it is determined that there is at least one power receiving apparatus (PRU, for example, power receiving apparatus 201 in Fig. 2) being charged at a low efficiency in operation 903, the operation can be branched to 905 operation.

If it is determined that there is no at least one power receiving apparatus (PRU, for example, power receiving apparatus 201 in Fig. 2) being charged with a low efficiency in operation 903, the operation can be branched to 901 operation.

An electronic device (PTU) 401 receives a local communication signal (e.g., low power Bluetooth (BLE)) of at least one power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) Upon sensing the RSSI _dynamic with a signal strength (RSSI), at 905 operation, the electronic device (PTU, 401) has at least one power receiving device (PRU, e.g. power receiving device 201 of FIG. 2) Or not.

The electronic device PTU 401 may determine whether there is at least one or more power receiving devices (PRUs, for example, the power receiving device 201 of FIG. 2) being charged with low efficiency.

is the charging efficiency of the electronic device (PTU, 401).

P _IN is the total power applied to the electronic device (PTU, 401).

P _RECT is the average output power of the rectifier of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) or the charging power of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) .

Information about the P _RECT is transmitted from each power receiving device (PRU, e.g., power receiving device 201 in FIG. 2) to the electronic device (PTU, 401).

ΣP _RECT Is the sum of the average output power or the charging power of the rectifier of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2) being charged on the charging unit 410 of the electronic device (PTU) 401.

P _THRESHOLD is an arbitrary power value for compensating power lost during charging of the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in Fig. 2). P _THRESHOLD may be stored in memory 440 in advance.

P _VERGE is power that is additionally consumed by at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) being charged with low efficiency.

? P _VERGE is the sum of the power that is additionally consumed by at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) being charged with low efficiency.

P _VERGE or ΣP _VERGE is a power value that can be changed according to at least one power receiving device that is filled with a less efficient (PRU, for example, the power receiving apparatus 201 in FIG. 2) detects the occurrence or whether, filled with a low efficiency (Power receiving apparatus 201 of FIG. 2) in the absence of at least one power receiving apparatus (PRU, for example) in the network.

In operation 905, to determine whether there is at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) being charged with low efficiency, the electronic device (PTU, 401) P _RECT + P _THRESHOLD , where the product of the charging efficiency of the electronic device (PTU, 401) corresponding to the electronic device (PTU, 401) and the total power applied to the electronic device (PTU, 401) At this time, because it is filled with a low efficiency that is at least one power receiving device (PRU, for example, also the power receiving apparatus 201 of Fig. 2) prior to the detection, ΣP _VERGE The term can be calculated as O.

In operation 905, to determine whether there is at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) being charged with low efficiency, the electronic device (PTU, 401) If the product of the charging efficiency of the electronic device (PTU) 401 corresponding to the electronic device (PTU) 401 and the total power applied to the electronic device (PTU) 401 is greater than the right side? P _RECT + P _THRESHOLD , . &Lt; / RTI &gt;

In operation 905, to determine whether there is at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) being charged with low efficiency, the electronic device (PTU, 401) If the product of the charging efficiency of the electronic device (PTU) 401 corresponding to the electronic device (PTU) 401 and the total electric power applied to the electronic device (PTU) 401 is smaller than the right side? P _RECT + P _THRESHOLD , You can branch.

In operation 905, the electronic device 401 (e.g., 101 of FIG. 1) _{determines that the} value of SIGMA P _RECT + P _THRESHOLD + SIGMA P VERGE on the right side is greater than the product of the charging efficiency and the total power applied to the electronic device (PTU, 401) If so, the operation can be branched to operation 907.

In operation 907, the electronic device (PTU) 401 is connected to at least one or more power receiving devices (PRUs, e.g., PDUs) including at least one or more power receiving devices (PRUs, , The power receiving apparatus 201 of FIG. 2) according to the priority order.

In operation 905, the electronic device 401 (e.g., 101 of FIG. 1) _{determines that the} value of the right side? P _RECT + P _THRESHOLD +? P _VERGE is less than the product of the charging efficiency and the total power applied to the electronic device (RSSI) of a local communication signal (e.g., low power Bluetooth (BLE)) of an object that is estimated or estimated at a low efficiency can be branched to operation 909 if RSSI _dynamic can not be measured. In operation 909, the electronic device (PTU) 401 interrupts the charging operation such that it can not supply power to an object determined to be foreign.

10A and 10B are views showing a foreign matter detection method of an electronic device (PTU) 401 according to various embodiments of the present invention.

As shown in FIG. 10A, for example, the NFC card 1001 is not chargeable, but can receive power to the electronic device (PTU) 401. In this case, the electronic device (PTU) 401 stops the charging operation so that power can not be supplied to the object (NFC card 1001) judged to be foreign matter.

As shown in FIG. 10B, for example, the power receiving device PRU 201 disposed at the edge of the charger 410 may be mistaken as a foreign substance due to a low charging efficiency. However, according to various embodiments of the present invention, The device PTU 401 measures RSSI _dynamic of the received signal strength (RSSI) of a monitored local communication signal (for example, low power Bluetooth (BLE)) of the power receiving device (PRU) 201 being charged with low efficiency, It is possible to prevent the charging from being interrupted in consideration of the power that is additionally consumed by at least one or more power receiving apparatuses (PRUs, e.g., the power receiving apparatus 201 in Fig.

11 is a flow chart of charge re-establishment in accordance with an alignment change of a power receiving device of an electronic device (PTU, 401) according to various embodiments of the present invention.

In operation 1101, the electronic device (PTU) 401 may charge at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) located on the charging portion 410.

At this time, the electronic device (PTU) 401 can charge at least one power receiving device (PRU, e.g., power receiving device 201 in Fig. 2) according to priority. In various embodiments, the electronic device (PTU) 401 may include an Electro Magnetic Resonance (EMR) pad or a touch pad. The charging portion 410 may include a charging pad, and the charging pad may be an EMR pad or a touch pad. The EMR pad or the touch pad may be disposed on the charging unit 410. The electronic device 401 (e.g., 101 of FIG. 1) may use an EMR pad or a touchpad to locate a location on the charging portion 410 of another electronic device (PRU, e.g., 201 of FIG. 2) . The electronic device PTU 401 may perform charging with higher priority as the at least one power receiving device (PRU, e.g., the power receiving device 201 of FIG. 2) is located at the center of the charging section 410 , And charging can be carried out with lower priority as the peripheral part

In operation 1101, the electronic device (PTU, 401) may perform charging settings. The electronic device PTU 401 receives a short distance communication signal (e.g., short beacon) from at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) The electronic device (PTU) 401 receives a short distance communication signal (e.g., a short beacon) from a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) , It can transmit a long beacon to the power receiving apparatus (PRU, for example, power receiving apparatus 201 in FIG. 2).

When the charging voltage (e.g., the average voltage of the rectifier, V _RECT ) is equal to or higher than the reference voltage, the power receiving apparatus (PRU, e.g., power receiving apparatus 201 in FIG. 2) receiving the long beacon transmits And transmit the request signal to the electronic device (PTU, 401). The electronic device (PTU) 401 may perform charging after at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) and charging settings.

According to various embodiments, when the voltage of the rectifier becomes higher than the reference voltage by the long beacon signal received by the power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) And a communication channel for charging setting and the like.

According to various embodiments, a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may be configured to communicate periodically or aperiodically (e.g., For example, when a trigger signal is generated, an advertisement signal can be transmitted. The electronic device PTU 401 may measure the RSSI of an advertisement signal transmitted by a power receiving device (PRU, e.g., the power receiving device 201 of FIG. 2).

(PRU), for example, the power receiving apparatus 201 of FIG. 2) is connected to the electronic apparatus (PTU 401), but the present invention is not limited to this signal. And may include all signals to be transmitted.

In operation 1101, after the device registration process is completed, power can be transmitted to the power receiving device (PRU, e.g., power receiving device 201 in FIG. 2). At this time, when the power receiving apparatus (PRU, for example, power receiving apparatus 201 in FIG. 2) starts receiving power from the electronic device (PTU 401) can do.

According to various embodiments, the electronic device (PTU) 401 may be configured such that the received signal strength (RSSI) of an advertisement received from a power receiving device (PRU, e.g., power receiving device 201) (PRU, e.g., power receiving apparatus 201 of FIG. 2), and transmits a scan request signal to the power receiving apparatus (PRU) (PRUs, e.g., power receiving apparatus 201 of FIG. 2), may perform or re-perform device setup in response to a scan request signal. (Not shown).

In operation 1103, the electronic device (PTU) 401 may branch to 1101 operation if it does not receive an advertisement from at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) have.

In operation 1103, the electronic device (PTU) 401 branches to 1105 operation upon receipt of an advertisement from at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2).

In operation 1105, when the electronic device PTU 401 receives an advertisement signal from at least one or more power receiving devices (PRUs, power receiving devices 201), it can identify the signal strength (RSSI) have.

In operation 1105, the electronic device (PTU, 401) receives an advertisement signal from at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) (advertisement) is received within a certain number of times and / or within a specific time. The number and / or the time that the electronic device (PTU) 401 receives a signal such as an advertisement signal from at least one power receiving device (PRU, e.g., power receiving device 201 in FIG. 2) Or it may be a case of receiving an advertisement signal after 1.7 seconds after receiving the initial advertisement signal. The electronic device (PTU) 401 can confirm that a power receiving device (PRU) (e.g., the power receiving device 201 of FIG. 2) is located in the vicinity of the wireless.

In operation 1107, the electronic device (PTU, 401) may detect whether the signal strength (RSSI) of the received advertisement signal is greater than or equal to a set reference value of the electronic device (PTU, 401). For example, in setting an electronic device (PTU, 401) charging of a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2), the change criterion (value that determines power transfer) may be intensity.

In operation 1107, the electronic device (PTU) 401 receives an advertisement signal from at least one or more power receiving devices (PRU, e.g., power receiving device 201 of FIG. 2) At least one of a specific signal strength, a specific number of times, and a specific time or more), the electronic device (PTU, 401) can branch to 1109 operation.

In operation 1109, the electronic device (PTU) 401 sends a scan request signal to a power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) to reset the charge to the power receiving device (201)).

12 is a flow diagram of a method for detecting misalignment of a power receiving device (PRU, e.g., 201 of FIG. 2) according to various embodiments of the present invention.

In operation 1201, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may receive power from an electronic device (PTU) 401 to perform a wireless charging operation.

In operation 1203, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may sense whether the charging voltage (e.g., the average voltage of the rectifier, V _RECT ) .

In operation 1203, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) branches to 1201 operation if the charge voltage (e.g., average voltage of the rectifier, V _RECT ) .

In operation 1203, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) branches to 1205 operation if the charging voltage (e.g., the average voltage of the rectifier, V _RECT ) .

In operation 1205, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may send a signal to the electronic device (PTU, 401) .

In operation 1207, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may transmit an advertising signal to the electronic device (PTU) 401 within a certain number of times and / or within a specified time. The number and / or the number of times that at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) transmits an advertisement signal to the electronic device (PTU, 401) , Or an advertisement signal is transmitted 1.7 seconds after the initial advertisement signal is transmitted.

In operation 1209, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may determine whether it has received a scan request signal from an electronic device (PTU, 401).

In operation 1209, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may branch to 1211 operation if it does not receive a scan request signal from the electronic device (PTU, 401).

In operation 1211, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may determine whether it has received an alignment misfire signal from the electronic device (PTU, 401).

In operation 1211, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may determine that wireless charging has been interrupted if no alignment failure signal is received from electronic device (PTU, 401) In operation 1202, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may branch to 1210 upon receipt of a scan request signal.

In operation 1210, at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) may perform or redo charge settings in response to a scan request signal.

In operation 1211, at least one power receiving device (PRU, e.g., power receiving device 201 of FIG. 2) may branch to operation 1213 if it issues an alignment misplacement signal from electronic device (PTU, 401).

At operation 1213, at least one or more power receiving devices (PRUs, e.g., power receiving device 201 of FIG. 2) may receive an alignment fault signal from an electronic device (PTU, 401) It can be judged that the misalignment state is not properly positioned.

In operation 1215, if at least one power receiving device (PRU, e.g., power receiving device 201 in FIG. 2) is determined to be misaligned, a misaligned alert (e.g., sound, Can be output.

FIG. 13 is a diagram illustrating a method of detecting misalignment between an electronic device (PTU, 401) and a power receiving device (PRU, 201, 202, 203) according to various embodiments of the present invention.

When an alignment failure occurs in the charging power receiving devices PRU 201, 202, 203 which are being charged, such as leaving the charger 410, the power receiving device 203 in which alignment failure occurs is shown in the flowchart of Figs. 11 and 12 You can then output a notification.

As used herein, the term "module " includes units comprised of hardware, software, or firmware and may be used interchangeably with terms such as, for example, logic, logic blocks, components, or circuits. A "module" may be an integrally constructed component or a minimum unit or part thereof that performs one or more functions. "Module" may be implemented either mechanically or electronically, for example, by application-specific integrated circuit (ASIC) chips, field-programmable gate arrays (FPGAs) And may include programmable logic devices. At least some of the devices (e.g., modules or functions thereof) or methods (e.g., operations) according to various embodiments may be stored in a computer readable storage medium (e.g., memory 830) . &Lt; / RTI &gt; When the instruction is executed by a processor (e.g., processor 820), the processor may perform a function corresponding to the instruction. The computer-readable recording medium may be a hard disk, a floppy disk, a magnetic medium such as a magnetic tape, an optical recording medium such as a CD-ROM, a DVD, a magnetic-optical medium such as a floppy disk, The instructions may include code that is generated by the compiler or code that may be executed by the interpreter. Modules or program modules according to various embodiments may include at least one or more of the components described above Operations that are performed by modules, program modules, or other components, in accordance with various embodiments, may be performed in a sequential, parallel, iterative, or heuristic manner, or at least in part Some operations may be executed in a different order, omitted, or other operations may be added.

Claims (20)

A wireless charging method of an electronic device for supplying power wirelessly,
Measuring a received signal strength associated with a local communication signal from one or more power receiving devices that are at least partially placed on the charging pad;
Determining a charge priority among the one or more power receiving devices based on the measured received signal strength; And
And wirelessly supplying power to the one or more power receiving devices based at least on the priority. The method according to claim 1,
The operation of measuring the received signal strength
Measuring a received signal strength associated with a local communication signal from the one or more power receiving devices at a first location on the charging pad; And
And measuring the received signal strength associated with the local communication signal from the one or more power receiving devices in a second location on the charging pad. The method according to claim 1,
Measuring the received signal strength for the local communication signal to determine if one or more new power receiving devices have been added to the charging pad;
Determining whether the at least one power receiving device is added to the charging pad and satisfying a maximum charging power of at least one power receiving device currently being charged among the at least one power receiving device;
A signal for changing the maximum charging power to the one or more power receiving apparatuses based on at least a sequence of lower priority when it is determined that the sum of the received charging powers of the one or more currently receiving power receiving apparatuses is smaller than the power supplyable power range, ; And
Further comprising: waiting for charging of the added one or more new power receiving devices if it is determined that the sum of the received charging powers of the one or more currently receiving power receiving devices is greater than the available power range Way. The method of claim 3,
Determining whether the one or more currently receiving power receiving devices are fully charged or deviating from the charging pad; And
Further comprising the step of determining whether the maximum charging power is adjusted to one or more power receiving apparatuses currently charging or waiting for charging when it is determined that the charging or discharging is complete. 5. The method of claim 4,
Determining whether the at least one power receiving apparatus is waiting for charging;
Transmitting a signal for adjusting the received power to the one or more power receiving apparatuses waiting for charging if the at least one power receiving apparatus is waiting for the charging; And
And randomly selecting any one of the one or more power receiving devices waiting for charging to charge the electronic device. The method of claim 3,
If it is determined that the total sum of the received charging powers of the one or more currently receiving power receiving apparatuses is smaller than the power supply allowable range, power is supplied to the added new one or more power receiving apparatuses and the one or more power receiving apparatuses The method comprising the steps of: The method according to claim 1,
Sensing a received signal strength associated with a local communication signal from one or more power receiving devices that are charging low efficiency among the one or more power receiving devices;
Determining whether the at least one power receiving apparatus under the low efficiency charging state has occurred if the received signal strength with respect to the local communication signal is lower than a specific reception protection strength from the at least one power receiving apparatus under low efficiency charging;
Performing charging of the at least one power receiving apparatus under low efficiency charging when the at least one power receiving apparatus under the low efficiency charging state occurs; And
And stopping the wireless charging operation when the at least one power receiving apparatus under the low efficiency charging state has not occurred. The method according to claim 1,
Receiving an advertisement signal from one of the one or more power receiving devices to stop wireless charging;
Determining whether a wireless power transmission request signal is received from a power receiving apparatus that has transmitted the advertisement signal within a specified number of times or within a designated time; And
And transmits a scan request signal to the at least one power receiving device when the wireless power transfer request signal is received within a specific number of times or within a specific time. A method for wireless charging of an electronic device,
Sensing the position of one or more external devices placed on the charging pad;
Determining a charge priority based at least on the sensed location; And
And determining an amount of transmission power based at least on the priority. 10. The method of claim 9,
The charging pad
And an EMR (Electro Magnetic Resonance) pad or a touch pad capable of detecting the position of the external device,
Further comprising setting a higher priority as the center of the charging pad is closer to the sensed position and charging the one or more external devices based at least on the set higher priority. A charging pad capable of supplying power wirelessly;
A communication unit capable of performing close range communication;
Memory; And
&Lt; / RTI &gt;
The processor
Measuring a received signal strength associated with the local communication signal from one or more power receiving devices that are at least partially located on the charging pad and determining a charging priority among the one or more power receiving devices based on the measured received signal strength And wirelessly supplying power to the one or more power receiving devices based at least on the priority. 12. The method of claim 11,
The processor
Measuring a received signal strength associated with a local communication signal from the one or more power receiving devices at a first location on the charging pad and measuring a local communication signal from the one or more power receiving devices located at a second location on the charging pad, And an associated received signal strength. 12. The method of claim 11,
The processor
Determine the presence of one or more new power receiving devices on the charging pad by measuring the received signal strength for the local communication signal and if the one or more power receiving devices are added on the charging pad, And determines whether the total charging power of at least one of the at least one power receiving apparatus currently charging is smaller than the available power range, The control unit controls to transmit a signal for changing the maximum charging power to the one or more power receiving apparatuses based on at least a lower order of the plurality of power receiving apparatuses, If it is judged to be large, The electronic device of the air charge for at least one new power receiving apparatus. 12. The method of claim 11,
The processor
Wherein the control unit determines whether the at least one currently receiving power receiving apparatus is fully charged or departs from the charging pad, Is determined. 15. The method of claim 14,
The processor
Determines whether there is one or more power receiving apparatuses waiting for the charging, and if there is one or more power receiving apparatuses waiting for charging, controls to transmit a signal for adjusting the received power to the one or more power receiving apparatuses waiting for charging , And one or more of the one or more power receiving devices waiting for charging are randomly selected to be charged. 14. The method of claim 13,
The processor
If it is determined that the total sum of the received charging powers of the one or more currently receiving power receiving apparatuses is smaller than the power supply allowable range, power is supplied to the added new one or more power receiving apparatuses and the one or more power receiving apparatuses To be supplied wirelessly. 12. The method of claim 11,
The processor
Wherein the at least one power receiving device senses a received signal strength associated with a local communication signal from one or more power receiving devices that are charging low efficiency among the one or more power receiving devices, Determining whether one or more power receiving apparatuses under the low efficiency charging state have occurred; if the one or more power receiving apparatuses under the low efficiency charging state have occurred, And stops the wireless charging operation when the at least one power receiving apparatus under the low efficiency charging state has not occurred. 12. The method of claim 11,
The processor
The method of claim 1, further comprising the steps of: when receiving an advertisement from one of the one or more power receiving devices, stopping the wireless charging and transmitting a wireless power transmission request signal from the power receiving device, And transmits a scan request signal to the at least one power receiving device when the wireless power transmission request signal is received within a specified number of times or within a specified time. A charging pad capable of supplying power wirelessly;
A communication unit capable of performing close range communication;
Memory; And
&Lt; / RTI &gt;
The charging pad
And an EMR (Electro Magnetic Resonance) pad or a touch pad capable of detecting the position of the external device,
The processor
Sensing a position of one or more external devices placed on the charging pad, determining a charge priority based at least on the sensed position, and determining a transmit power based at least on the priority. 20. The method of claim 19,
The processor
Sets a higher priority as the center of the charging pad is closer to the sensed position and charges the one or more external devices based at least on the set higher priority.

Images