Electronic device and method for wireless charging, and non-transitory storage medium

Abstract

The present disclosure relates to an electronic device for wireless charging, comprising: a first housing; a second housing connected to a part of the first housing so as to be openable or closable; a coil; a communication circuit; a processor; and a memory. The electronic device stores instructions so that: short-range wireless communication is used to wirelessly transmit power to the wearable electronic device through the coil when a wearable electronic device approaches; a power standby mode is entered when an entry message for the power standby mode is received from the wearable electronic device; loading of the wearable electronic device in the first housing is identified on the basis of a signal detected by a transmission circuit included in the communication circuit during the power standby mode; the power standby mode is released when a release message for the power standby mode is received from the wearable electronic device; and power is wirelessly retransmitted to the wearable electronic device. The entry message is set using an NFC wireless charging protocol and includes information indicating entry into the power standby mode when the entry into the power standby mode is identified according to a condition designated by the wearable electronic device, and the release message is set using the NFC wireless charging protocol and includes information indicating the release of the power standby mode when the release of the power standby mode is identified by the wearable electronic device according to the designated condition.

Description

Electronic devices, methods, and non-transitory storage media for wireless charging

[0001] The present disclosure relates to an electronic device, method and non-transitory storage medium for wireless charging.

[0002] With the advancement of digital technology, electronic devices are now available in various forms, such as smartphones, tablet personal computers (PCs), and personal digital assistants (PDAs). Electronic devices are also being developed into wearable devices to enhance portability and accessibility.

[0003] As communication technology advances, wearable electronic devices are becoming smaller and lighter enough to be worn on the body without significant discomfort. For example, wearable electronic devices such as head-mounted display devices (HMDs), smartwatches (or bands), contact lenses, rings, gloves, shoes, and clothing are becoming commercially available. Because wearable electronic devices are worn directly on the body, they can enhance portability and user accessibility. In line with recent consumer trends that prioritize design, the development of wearable electronic devices is increasingly focusing on both their external design and their usability.

[0004] As wireless charging technology advances, small, compact electronic devices with low charging currents are being developed for wireless charging, and charging devices (e.g., cradles) that can wirelessly charge and store wearable electronic devices containing batteries are being developed. These wireless charging technologies utilize wireless power transmission and reception, and for example, the battery of an electronic device can be automatically charged simply by placing it on a charging device, without having to connect it to a separate charging connector. Since small wireless charging electronic devices use high frequencies, the size of the wireless charging coil can be made small, so it can be easy for wireless charging electronic devices to utilize magnetic resonance or magnetic induction methods when performing wireless charging through wireless communication.

[0005] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0006] Conventional wireless charging technology has the problem that even when a small wearable electronic device is fully charged and the battery is turned off, the charging device (cradle) transmits more than a certain amount of power for a wireless charging connection, which causes the battery to discharge easily. In addition, unnecessary use of wireless charging can reduce efficiency and increase heat generation.

[0007] The present disclosure provides an electronic device, a method, and a non-transitory storage medium for wirelessly charging a wearable electronic device by storing the small wearable electronic device (e.g., a smart ring) in a charging device (e.g., a cradle) during wireless charging.

[0008] According to one embodiment of the present disclosure, an electronic device includes a first housing, a second housing connected to a portion of the first housing to enable opening or closing, a coil, a communication circuit, at least one processor including a processing circuit, and a memory storing instructions.

[0009] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the electronic device to wirelessly transmit power to the wearable electronic device through the coil using short-range wireless communication based on determining proximity of the wearable electronic device to the electronic device.

[0010] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the electronic device to enter a power hold mode (PHM) based on receiving an entry message for the PHM from the wearable electronic device.

[0011] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the electronic device to identify that the wearable electronic device is seated in the first housing based on a signal detected by a transmitting circuit included in the communication circuit while in the power standby mode.

[0012] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the electronic device to exit the power standby mode based on receiving a release message for the power standby mode from the wearable electronic device.

[0013] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the electronic device to wirelessly retransmit power to the wearable electronic device via the coil using the near-field wireless communication.

[0014] According to one embodiment, the entry message is set using a near field communication (NFC) wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and includes information indicating entry into the power standby mode.

[0015] According to one embodiment, the release message is set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and includes information indicating the release of the power standby mode.

[0016] According to one embodiment, a wearable electronic device includes a coil, communication circuitry, at least one processor including processing circuitry, and a memory storing instructions.

[0017] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to wirelessly receive power from the electronic device via the coil using short-range wireless communication based on determining proximity to the electronic device.

[0018] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to set an entry message for the power standby mode based on determining that entry into the power standby mode is necessary based on a specified condition.

[0019] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to transmit the set entry message to the electronic device.

[0020] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to identify that the wearable electronic device is seated on the electronic device while in the power standby mode.

[0021] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to set a wake message for the power standby mode based on determining that wake up from the power standby mode is necessary based on the specified condition.

[0022] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to transmit the set release message to the electronic device.

[0023] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to wirelessly re-receive power from the electronic device via the coil using the short-range wireless communication based on the power standby mode being released.

[0024] According to one embodiment, the entry message is set using an NFC wireless charging protocol and includes information indicating entry into the power standby mode.

[0025] According to one embodiment, the release message is set using the NFC wireless charging protocol and includes information indicating release of the power standby mode.

[0026] According to one embodiment, a method of operating an electronic device includes wirelessly transmitting power to a wearable electronic device through a coil of the electronic device using short-range wireless communication based on determining proximity of the wearable electronic device to the electronic device.

[0027] According to one embodiment, the method includes an operation of entering a power standby mode based on receiving an entry message for a power standby mode from the wearable electronic device.

[0028] According to one embodiment, the method includes an operation of identifying that the wearable electronic device is seated in a first housing of the electronic device based on a signal detected by a transmitting circuit included in a communication circuit of the electronic device while the electronic device is in a power standby mode.

[0029] According to one embodiment, the method includes an operation of releasing the power standby mode based on receiving a release message for the power standby mode from the wearable electronic device, and wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication.

[0030] According to one embodiment, the entry message is set using an NFC wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and includes information indicating entry into the power standby mode.

[0031] According to one embodiment, the release message is set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and includes information indicating the release of the power standby mode.

[0032] According to one embodiment, a non-transitory storage medium storing one or more programs includes an operation that, when executed by at least one processor of an electronic device, causes the electronic device to wirelessly transmit power to the wearable electronic device through a coil of the electronic device using short-range wireless communication based on determining proximity of the wearable electronic device to the electronic device.

[0033] According to one embodiment, the one or more programs, when executed by at least one processor of the electronic device, include an action that causes the electronic device to enter the power standby mode based on receiving a message for entering the power standby mode from the wearable electronic device.

[0034] According to one embodiment, the one or more programs, when executed by at least one processor of the electronic device, include an operation that causes the electronic device to identify that the wearable electronic device is seated in the first housing of the electronic device based on a signal detected by a transmitting circuit included in a communication circuit of the electronic device while in the power standby mode.

[0035] According to one embodiment, the one or more programs include instructions that, when executed by at least one processor of the electronic device, cause the electronic device to perform an operation of releasing the power standby mode and wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication, based on receiving a release message for the power standby mode from the wearable electronic device.

[0036] According to one embodiment, the entry message is set using an NFC wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and includes information indicating entry into the power standby mode.

[0037] According to one embodiment, the release message is set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and includes information indicating the release of the power standby mode.

[0038] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0039] FIGS. 2A and 2B are diagrams showing an example configuration of an electronic device for wireless charging according to one embodiment.

[0040] FIGS. 3A, 3B, 3C, and 3D are diagrams showing examples of configurations of an electronic device for wireless charging according to one embodiment.

[0041] FIG. 4 is a diagram showing an example configuration of a system for wireless charging according to one embodiment.

[0042] FIG. 5 is a diagram illustrating an example of an NFC wireless charging protocol for a wireless charging operation according to one embodiment.

[0043] FIG. 6 is a diagram illustrating an example of an operation method for wireless charging in an electronic device according to one embodiment.

[0044] FIG. 7 is a diagram illustrating an example of an operation method for wireless charging in an electronic device according to one embodiment.

[0045] FIG. 8 is a drawing showing an example of an operation method for wireless charging of an electronic device and a wearable electronic device in a system for wireless charging according to one embodiment.

[0046] FIGS. 9A, 9B, 9C, and 9D are graphs illustrating examples of an operating method for wireless charging according to one embodiment.

[0047] In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

[0048] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components. In addition, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and conciseness. The term "user" used in the embodiments of the present disclosure may refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) using an electronic device.

[0049] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0050] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0051] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0052] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0053] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0054] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0055] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0056] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0057] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0058] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0059] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0060] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0061] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0062] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0063] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0064] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0065] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0066] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for realizing 1eMBB, a loss coverage (e.g., 164 dB or less) for realizing mMTC, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for realizing URLLC.

[0067] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0068] According to various embodiments, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0069] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0070] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0071] FIGS. 2A and 2B are diagrams showing an example configuration of an electronic device for wireless charging according to one embodiment.

[0072] Referring to FIGS. 2A, 2B, 3A, and 3B, a wearable electronic device (201) according to one embodiment (e.g., the electronic device (101) of FIG. 1) may be a receiving device (e.g., an RX device) for wireless charging and may perform wireless communication with an electronic device (e.g., the electronic devices (102, 104) of FIG. 1) via a wireless communication network (e.g., the first network (198) or the second network (199) of FIG. 1). According to one embodiment, the wearable electronic device (201) may perform wireless charging using power wirelessly provided from an electronic device (e.g., a transmitting (TX) device) (301) using a magnetic resonance method via a short-range wireless communication method (e.g., a near field communication (NFC) communication method). According to one embodiment, the wearable electronic device (201) may be a small wireless charging device that performs low-power wireless charging using a low charging current. As illustrated in FIGS. 2A and 2B , a wearable electronic device (201) according to one embodiment may be configured to be worn on a part of the body (e.g., a finger). According to one embodiment, the wearable electronic device (201) may be a ring-shaped wearable device (e.g., a smart ring or a loop-shaped). An outer surface of the electronic device (200) according to one embodiment may be formed in a circular shape, and at least one inner surface of the wearable electronic device (201) may be formed flat. For example, the wearable electronic device (201) may perform wireless communication with other electronic devices such as a smartphone, a desktop / laptop computer, a car, a smart TV, indoor smart home devices, a tablet PC, or a smart watch. Wireless communication between the wearable electronic device (201) and another electronic device may be implemented as wireless communication, such as a short-range communication network (e.g., the first network (198) of FIG. 1) or a long-range communication network (e.g., the second network (199) of FIG. 1).For example, based on the establishment of a Bluetooth communication link between a wearable electronic device (201) and an electronic device to which a user wishes to connect, message transmission between the electronic devices may be possible. The wearable electronic device (201) worn by the user may transmit commands corresponding to specific movements and gestures of the user's fingers to another electronic device.

[0073] A wearable electronic device (201) according to one embodiment may include a printed circuit board (PCB) (203) and a conductive pattern (205). The printed circuit board (203) according to one embodiment may include at least one processor (260) and at least one sensor (207). For example, the sensor (207) may include at least one of a photo diode (PD), a light emitting diode (LED), or a temperature sensor, but is not limited thereto. Some of the above components (e.g., the sensor (207)) may be omitted. The wearable electronic device (201) may include motion sensors (e.g., the sensor module (176) of FIG. 1) including at least one of an accelerometer, a gyroscope, or an electronic compass to detect a user's finger movement and / or gesture. According to one embodiment, a processor (260) included in a printed circuit board (203) can detect a user's biometric information (e.g., body temperature, heart rate, electrocardiogram (ECG) or skin temperature) using at least one sensor (207), but is not limited thereto.

[0074] According to one embodiment, the conductive pattern (210) may include a coil in a ring shape. The conductive pattern (205) according to one embodiment may include a conductive material (e.g., copper (Cu)). The conductive pattern (205) according to one embodiment may include a coil (e.g., an NFC coil) formed of a conductive material. The processor (260) according to one embodiment may transmit or receive a signal using the conductive pattern (205). For example, the processor (260) may receive power wirelessly through the conductive pattern (205). According to one embodiment, the wearable electronic device (201) may include a battery (207) arranged adjacent to the conductive pattern (205).

[0075] According to one embodiment, the wearable electronic device (201) may include an acoustic module (e.g., the acoustic output module (155) of FIG. 1, or the audio module (170)), a haptic module (e.g., the haptic module (179) of FIG. 1), or a display (e.g., the display module (160) of FIG. 1). Based on receiving a message from another electronic device to the wearable electronic device (201), the wearable electronic device (201) may notify the user of the message reception using sound, vibration, a display screen, or light (e.g., a light emitting diode or a xenon lamp). In one embodiment, at least one of the acoustic module, the haptic module, or the display module may not be included in the wearable electronic device (201).

[0076] This form may be an example and is not limited thereto, and the wearable electronic device (201) may be configured in various other forms. According to one embodiment, the wearable electronic device (201) may include circuits (e.g., elements, modules, or components) for performing wireless charging inside the housing.

[0077] FIGS. 3A, 3B, 3C, and 3D are diagrams showing examples of configurations of an electronic device for wireless charging according to one embodiment.

[0078] Referring to FIGS. 3A, 3B, 3C, and 3D, an electronic device (301) according to one embodiment may be a transmitter that supplies power wirelessly, and a wearable electronic device (201) may be positioned (e.g., mounted) in a part of a first housing (310), which is a lower housing. The first housing (310) in which the electronic device (201) is positioned has a protrusion (311) (e.g., a circular or cylindrical member or a support member) in a central region, and at least one antenna may be disposed on one surface of the protrusion (311). The wearable electronic device (201) according to one embodiment may be positioned in the protrusion (311) of the electronic device (301). According to one embodiment, the wearable electronic device (201) may be positioned (e.g., mounted) so as to be inserted into at least a part of the protrusion (311) of the electronic device (301). According to one embodiment, a wearable electronic device (201) may be positioned parallel to a first housing (310) of an electronic device (301). According to one embodiment, the wearable electronic device (201) may be mounted (e.g., seated) at a height of a protrusion (311) having a size corresponding to the size of the wearable electronic device (201). For example, the electronic device (301) may include a first housing (310) as a lower housing and a second housing (320) as an upper housing configured to be openable and closable so as to face (face) the first housing (310). For example, the first housing (310) and the second housing (320) may be formed in a shape illustrated in a solid line (e.g., a cradle) or may be formed in a shape included in a case illustrated in a dotted line. The first housing (310) and the second housing (320) are not limited to the shapes shown in FIGS. 3a to 3d, and may be configured in various other shapes.

[0079] According to one embodiment, the protrusion (311) of the electronic device (301) may be implemented to have a physical key (313) in the central area, as shown in FIG. 3A. According to one embodiment, the transmitting device (301) may also detect an input for resetting (e.g., reset, reboot) the wearable electronic device (201) using a Hall sensor (not shown) without using the physical key (313). The transmitting device (301) may transmit a signal to the wearable electronic device (201) so that the wearable electronic device (201) performs a specific operation based on a user input to the key (313). According to one embodiment, the key (313) may be implemented on the outside of the housing of the electronic device (301), and the specific location of the key (313) is not limited to that shown. According to one embodiment, the protrusion (311) of the electronic device (301) is not limited to the shape of FIG. 3A, and may be implemented to have a plurality of protrusion members (e.g., support members) in the central region, or may be configured as a conical protrusion (313), and may be implemented in various other shapes.

[0080] According to one embodiment, the electronic device (301) may include coils (315, 317) for wirelessly transmitting power to the wearable electronic device (201). According to one embodiment, the coil (315) of the electronic device (301) may be disposed at a position in contact with the wearable electronic device (201) in the first housing (310), as illustrated in FIG. 3C. According to one embodiment, the coil (317) of the electronic device (301) may also be disposed at a portion in contact with the wearable electronic device (201) in the protrusion (311) (or a portion of a side surface of the protrusion (311), as illustrated in FIG. 3D. Wireless charging and communication for wireless charging may be performed through the transmitting coils (315, 317) of the electronic device and the receiving coil (205) of the wearable device.

[0081] According to one embodiment, the electronic device (301) may wirelessly transmit power to the wearable electronic device (201) through the coils (315, 317), or may transmit a control signal for resetting the wearable electronic device (201) and / or pairing with an external electronic device while transmitting power to the wearable electronic device (201). The specific positions where the coils (315, 317) of the electronic device (301) are arranged are not limited to those illustrated in FIG. 3c or FIG. 3d.

[0082] According to one embodiment, the configuration of the electronic device (301) is not limited to the configurations described above, and may further include other components necessary for wireless charging. In one embodiment, although FIG. 3A illustrates a wearable electronic device (201) that wirelessly receives power from the electronic device (301) as having a ring shape, the present invention is not limited thereto. For example, the wearable electronic device (201) may be implemented in the form of earphones, a smart bracelet, a smart necklace (e.g., a pendant), or a smart belt.

[0083] FIG. 4 is a diagram showing an example configuration of a system for wireless charging according to one embodiment.

[0084] Referring to FIG. 4, according to one embodiment, a wearable electronic device (201) may be connected to an electronic device (301) that transmits wireless power via short-range wireless communication (e.g., NFC communication). In one embodiment, the short-range wireless communication method may include a magnetic induction method or a magnetic resonance method, and there is no limitation on the standard of the short-range wireless communication method. In the magnetic induction method, for example, the size of the coil (210) may be relatively small because the resonant frequency of the coil (410) and the frequency of the signal transmitted from the transmitting device (301) to the wearable electronic device (201) are different. In the magnetic resonance method, the resonant frequency of the coil (410) of the transmitting device (301) may correspond to the resonant frequency of the coil (210) of the wearable electronic device (201).

[0085] According to one embodiment, the electronic device (301) may include circuits (e.g., elements, modules, or components) for wirelessly transmitting power for wireless charging to a wearable electronic device (201), which is a receiving device. According to one embodiment, the electronic device (301) may include a TX antenna coil (410), a power supply circuit (420), a communication circuit (430) including a transmitter (NFC) (431), a matching circuit (440), a processor (450) including a PMIC (451), an input interface (460), and a Hall circuit (Hall IC) (480). In addition, other components necessary for wireless charging may be further included.

[0086] According to one embodiment, the processor (450) may perform a setup operation and / or a pairing operation for wireless charging of the wearable electronic device (201) via the input interface (460). The processor (450) may provide a control signal for the setup operation of the wearable electronic device (201) and / or a control signal for the pairing operation of the wearable electronic device (201) to the transmission circuit (431) via a signal line. Based on the control signal provided by the processor (450), a signal for the setup operation of the wearable electronic device (201), a signal for the pairing operation of the wearable electronic device (201), and / or a signal for the wireless charging operation may be wirelessly transmitted via the coil (410). For example, the setup operation may include a booting or initialization operation of the wearable electronic device (201). The transmitter circuit (431) may include components (e.g., a converter and / or an amplifier) ​​for converting a voltage received from the power supply circuit (420) into a specific AC voltage. For example, the PMIC (451) may receive power from the power supply circuit (420) and provide a voltage (e.g., a pogo voltage) to the transmitter circuit (431) via a power line. The matching circuit (440) may match the impedance between the coil (410) and the transmitter circuit (431) to increase power transmission efficiency. The coil (410) may transmit wireless power using a resonant frequency specified according to the voltage applied from the matching circuit (440). The Hall circuit (480) may be connected to the processor (450) and may include a Hall sensor. The electronic device (301) can determine that the second housing (e.g., the second housing (320) of FIG. 3b) configured to be openable is opened based on sensor information (e.g., Hall information) obtained by the Hall sensor.The electronic device (301) can check events for pairing operations of an external electronic device, confirmation of placement of a wearable electronic device (201), and / or operations related to wireless charging through the Hall sensor based on sensor information (e.g., Hall information) obtained by the Hall sensor.

[0087] According to one embodiment, a wearable electronic device (201) may include a power receiving circuit including an RX antenna coil (210), a matching circuit (220), a rectifier circuit (230), a regulator (240), a power management circuit (250) including a charging circuit (251) (e.g., a PMIC), a processor (260), a memory (270), a communication circuit (280), and a hall circuit (hall IC) (290). In addition, other components required for wireless charging may be further included.

[0088] According to one embodiment, the wearable electronic device (201) may receive wireless power (e.g., AC power) from the electronic device (301) using a designated resonant frequency through a coil (210) (e.g., a resonator) included in the power receiving circuit. The wearable electronic circuit (201) may further include other components necessary to receive wireless power.

[0089] According to one embodiment, the matching circuit (220) of the wearable electronic device (201) may be configured to perform impedance matching to increase the efficiency of wireless power reception by matching at least one short-range wireless communication antenna (e.g., an NFC antenna or a coil for wireless charging). The matching circuit (220) may be configured to apply AC1 voltage and AC2 voltage applied to both ends of the coil (210) to the rectifier circuit (230). For example, the matching circuit (220) may be configured to be electrically connected to the coil (210), the processor (260), and the communication circuit (280).

[0090] According to one embodiment, the rectifier circuit (230) of the wearable electronic device (201) may be configured to rectify an alternating current (AC voltage) applied from a coil (210) into a direct current (DC voltage) and output the rectified direct current (DC voltage) to a regulator (240). The rectifier circuit (230) may be configured to be electrically connected to a matching circuit (220) and a regulator (240).

[0091] According to one embodiment, the regulator (240) of the wearable electronic device (201) may be configured to convert the voltage (VRECT) rectified by the rectifier circuit (230) into a specific direct current voltage (DC voltage) and process signals transmitted / received through communication between the electronic devices (301). The regulator (240) may be configured to be electrically connected to the rectifier circuit (230), the power management circuit (250), and the processor (260).

[0092] According to one embodiment, a power management circuit (250) of a wearable electronic device (201) may include a charging circuit (e.g., a battery (207) of FIG. 2A) (251) and components for managing wireless charging, and may be configured to perform charging by applying a charging voltage (e.g., a specific DC voltage (VBUS_SV) or an output voltage (VOUT)) output from a regulator (240) to the charging circuit (251). The power management circuit (250) may be configured to be electrically connected to the regulator (240) and the processor (260). The Hall circuit (290) may be configured to be connected to the processor (260) and may include a Hall sensor. The wearable electronic device (201) can determine whether it is positioned (e.g., attached) to the first housing (e.g., the first housing (310) of FIG. 3B) of the electronic device (301) based on sensor information (e.g., Hall information) and / or a charging voltage (e.g., VOUT, 5V) acquired by the Hall sensor. The wearable electronic device (210) can determine separation (e.g., detach) based on sensor information (e.g., Hall information) acquired by the Hall sensor.

[0093] According to one embodiment, the processor (260) of the wearable electronic device (201) can control overall operations for wireless charging, and can control the operations of the electrically connected rectifier circuit (230), regulator (240), and power management circuit (250). The processor (260) can obtain status information and / or control information related to wireless charging, and control the communication circuit (280) to store the status information and / or control information related to wireless charging in the memory (270) or transmit it to an external electronic device (e.g., electronic device (301)). The processor (260) can be a processor or a circuit included in the processor that can control overall operations for wireless charging.

[0094] According to one embodiment, the communication circuit (280) of the wearable electronic device (201) may include at least one short-range wireless communication antenna (e.g., an NFC antenna and / or a BLE antenna) for wireless charging. For example, the communication circuit (280) may transmit / receive a signal for performing wireless charging using a wireless communication method (e.g., an NFC communication method). According to one embodiment, the wearable electronic device (201) may include a separate antenna connected to the communication circuit (280) that supports a wireless communication method (e.g., a Bluetooth low energy (BLE) method). For example, the communication circuit (280) may transmit status information and / or control information to the electronic device (301) or another external electronic device using a wireless communication method (e.g., a BLE communication method).

[0095] According to one embodiment, the electronic device (301) can detect the proximity of the wearable electronic device (201). For example, the electronic device (301) can detect the proximity of the wearable electronic device (201) to the electronic device (301) based on detecting that the wearable electronic device (201) is located within the coverage for short-range wireless communication with the electronic device (301). The short-range wireless communication supported by the electronic device (301) may include a communication method for wireless power transmission based on the NFC protocol or the Qi protocol, but the specific communication method is not limited thereto.

[0096] FIG. 5 is a diagram illustrating an example of an NFC wireless charging protocol for a wireless charging operation according to one embodiment.

[0097] Referring to FIGS. 4 and 5, an electronic device (301) according to one embodiment may perform a wireless charging operation to wirelessly transmit power to the wearable electronic device (201) through a coil (410) using short-range wireless communication (e.g., NFC communication) based on confirming proximity of the wearable electronic device (201).

[0098] According to one embodiment, the electronic device (301) can receive an entry message (I2C_Read WLC_CTL message) for a power hold mode (PHM) from the wearable electronic device (201) through the communication circuit (430). The power hold mode (PHM) indicates a standby state in which only the presence or absence of a receiving device (e.g., the wearable electronic device (201)) is confirmed and heat generation control and charging are stopped, and the power hold mode (PHM) can be referred to as a power maintenance mode or a charging stop mode. According to one embodiment, the wearable electronic device (201) can determine whether entry into the power hold mode is required based on a specified condition and obtain entry information for the power hold mode. When the wearable electronic device (201) determines that it needs to enter a power standby mode, it can set an entry message (WLC (Wireless network protocol)_CTL (control) message) using the NFC wireless charging protocol illustrated in FIG. 5 based on the acquired entry information. The specified condition may include at least one of a heating condition, a full charge condition, or a safety timer expiration condition.For example, the NFC wireless charging protocol may be set to 10 bytes, as illustrated in FIG. 5, and may include header information (0 bytes), length information (1 byte) of the wearable electronic device (201) identification information (size, version field), first status information (ring status #1) of the wearable electronic device (201) (3 bytes), power standby mode expiration timer information (PHM expired timer) (8 bytes) (e.g., 30-second unit time data), cradle request information (request cradle info) (7 bytes), current (IOUT) information (4 bytes), voltage (VRECT) information (5 bytes, 6 bytes), and second status information (ring status #2) (9 bytes) of the wearable electronic device (201). The present invention is not limited thereto, and may further include other information related to a wireless charging operation using NFC in other fields.

[0099] According to one embodiment, the cradle request information (request cradle info) (7 bytes) may be set to transmit information indicating a state change when the 0 bit (Req. cradle. info) is 0, since the electronic device (301) (e.g., the cradle) is ready to receive information indicating a state change when the state of the electronic device (301) changes. For example, the electronic device (301) may transmit its information to the wearable electronic device (201) through a designated channel (e.g., an app data channel) when its state changes (e.g., the cover is opened, closed, and an external charger is connected) and / or when the wearable electronic device (201) requests. If the 0 bit (Req. cradle. info) of the cradle request information (request cradle info) (7 bytes) is 1, the state of the electronic device (301) (e.g., cradle) has changed and the electronic device (301) must transmit information indicating the state change to the wearable electronic device (201) (e.g., ring), but the electronic device (301) may be set not to transmit information indicating the state change. If the wearable electronic device (201) is not ready to receive the current cradle information from the electronic device (301), the 0 bit of the cradle request information may be set to 1. The cradle request information (request cradle info) (7 bytes) can be set to transmit the identification information (ID) of the transmitting circuit (TX IC) when 1 bit (TX-ID) is (1,1), and can be set to transmit the identification number (S / N) of the electronic device (e.g., cradle) when 0 bit (cradle S / N) is (1,1).

[0100] According to one embodiment, the first status information (e.g., ring status #1) (3 bytes) of the wearable electronic device (201) may include a cradle operation information (Req. working info) field (7 bits) indicating the operation of the cradle by the wearable electronic device (201) to the electronic device (301), a hall status (e.g., ring hall status) field (6 bits) indicating whether the wearable electronic device (201) is seated, a safety timer (e.g., safety timer value) field (5 bits), a temperature status (e.g., temp status) field (3 bits, 4 bits), a PHM field (2 bits), a full charge information (e.g., EOC) field (1 bit), and a paired status (paired) field (0 bit). The cradle operation information (Req. working. info) field (7 bits) of 3 bytes (ring status #1) may indicate a request for cradle operation information (e.g., cradle SOC, temperature, hall sensor, charger connection information, and other cradle operation information) when set to 1, and may indicate that there is no request for cradle operation information when set to 0. The second status information (ring status #2) (9 bytes) of the wearable electronic device (201) may include reserved fields (7, 6, 5 bits), Disable.APP field (4 bits), cradle_wireless high_temp field (3 bits), ADV_start field (2 bits), req.power.off field (1 bit), and paired field (0 bit). The Disable.APP field (4 bits) may indicate that the wearable electronic device (201) (e.g., ring) is not in a condition to retrieve app data (e.g., when the battery is low), when set to 1, and may indicate that app data use is possible when set to 0.

[0101] According to one embodiment, the processor (450) of the electronic device (301) may receive an entry message for a power standby mode from the wearable electronic device (201) through the communication circuit (430) at a designated third time interval (e.g., 30 seconds).

[0102] According to one embodiment, the entry message may include information indicating entry into power standby mode (PHM field value: 1), information indicating settling (e.g., hall status field value: 0), information indicating that the safety timer is normal (e.g., safety timer field value: 0), information indicating temperature control or temperature cutoff (e.g., temperature status field value: 01 or 10), information indicating full charge (e.g., EOC field value: 0), and information indicating pair status (e.g., paired field: 1), using the NFC wireless charging protocol, as illustrated in FIG. 5.

[0103] According to one embodiment, the processor (450) of the electronic device (301) may enter a power standby mode based on receiving a power standby entry message, and may repeatedly or periodically check for opening or closing of the second housing (e.g., the second housing (320) of FIG. 3B) while in the power standby mode (e.g., while performing an operation for power standby).

[0104] According to one embodiment, the processor (450) of the electronic device (301) may repeatedly perform an operation of transmitting a charging disable signal to a transmission circuit (431) (TX circuit) included in a communication circuit (430) to turn off the transmission circuit (431) based on identifying the opening of the second housing while in a power standby mode, and transmitting a charging enable signal to the transmission circuit (431) to turn on the transmission circuit (431) after a specified first time (e.g., 2 seconds) until a release message for the power standby mode is received.

[0105] According to one embodiment, the processor (450) of the electronic device (301) may, based on identifying that the second housing is closed while in a power standby mode, transmit a charge disable signal to the transmission circuit (431) to turn off the transmission circuit for a specified second period of time (e.g., 40 seconds) when a heat condition is satisfied. The processor (450) may, based on identifying that the second housing is closed, transmit a charge disable signal to the transmission circuit (431) to turn off the transmission circuit (431) until the second housing is opened when a full charge condition and a safety timer condition are satisfied. When the full charge condition and the safety timer condition are satisfied, the processor (450) may transmit a charge enable signal to the transmission circuit (431) to turn on the transmission circuit (431).

[0106] According to one embodiment, the processor (450) of the electronic device (301) can determine whether the wearable electronic device (201) is positioned (e.g., present) in the first housing (e.g., the first housing (310) of FIG. 3B) after the transmitter circuit (431) (TX IC) included in the communication circuit (430) is turned ON. The electronic device (301) can determine that the wearable electronic device (201) is positioned (e.g., positioned) in the first housing by detecting a signal (I2C_Read detected) of communication between the processor (450) (e.g., PMIC (451)) and the communication circuit (430) (e.g., the transmitter circuit (TX IC)) (e.g., a signal indicating that the wearable electronic device is positioned).

[0107] According to one embodiment, the processor (450) of the electronic device (301) may determine that the wearable electronic device (201) is separated from the first housing if a signal (I2C_Read) of communication between the communication circuit (430) (e.g., a transmitting circuit (TX IC)) is not detected within a specified time.

[0108] According to one embodiment, the processor (450) of the electronic device (301) may receive a release message (WLC_CTL message) for a power standby mode from the wearable electronic device (201). When the processor (450) receives the release message, the processor (450) may release the power standby mode and perform a wireless charging operation to wirelessly retransmit power to the wearable electronic device (201) through the coil (410) using short-range wireless communication (e.g., NFC communication). According to one embodiment, the wearable electronic device (201) may determine whether release from the power standby mode is required based on a specified condition and obtain release information for the power standby mode. When the wearable electronic device (201) determines that release from the power standby mode is required, the wearable electronic device (201) may set a release message (WLC (Wireless network protocol)_CTL (control) message) for the power standby mode using the NFC wireless charging protocol illustrated in FIG. 5 based on the obtained release information.

[0109] According to one embodiment, the release message may include information indicating release of power standby mode (PHM field value: 1), information indicating detachment (e.g., Hall status field value: 1), information indicating expiration of a safety timer (e.g., Safety Timer field value: 1), information indicating that the temperature is normal (e.g., Temperature status field value: 00), information indicating charging (e.g., EOC field value: 1), and information indicating a pair status (e.g., paired field: 0 or 1), using the NFC wireless charging protocol as illustrated in FIG. 5.

[0110] An electronic device according to one embodiment (e.g., an electronic device (101) of FIG. 1, a wearable electronic device (201) of FIGS. 2A, 2B, and 4, or an electronic device (301) of FIGS. 3A to 3C and 4) may implement a software module for wireless charging (e.g., a program (140) of FIG. 1). A memory of the electronic device (e.g., a memory (130) of FIG. 1 and a memory (270) of FIG. 4) may store commands (e.g., instructions) to implement the software module. At least one processor (e.g., processor (120) of FIG. 1, processor (450) of FIG. 4, or processor (260)) can execute instructions stored in memory to implement a software module and control hardware associated with the function of the software module (e.g., sensor module (176), power management module (188), or communication module (190) of FIG. 1).

[0111] According to one embodiment, a software module of an electronic device may be configured to include a kernel (or HAL), a framework (e.g., middleware (144) of FIG. 1), and an application (e.g., application (146) of FIG. 1). At least a portion of the software module may be preloaded on the electronic device or downloadable from a server (e.g., server (108)). The application may include an application received from an external electronic device (e.g., server (108) or electronic device (102, 104)). According to one embodiment, the application may include a preloaded application or a third party application downloadable from a server. The components and names of the components of the software module according to the illustrated embodiment may vary depending on the type of operating system. According to one embodiment, at least a portion of the software module may be implemented as software, firmware, hardware, or a combination of at least two or more thereof. At least a portion of a software module may be implemented (e.g., executed) by, for example, a processor (e.g., an AP). At least a portion of a software module may include, for example, a module, a program, a routine, a set of instructions, or a process for performing at least one function.

[0112] In this way, in one embodiment, the main components of the electronic device have been described through the electronic device (101) of FIG. 1, the electronic device (301) of FIG. 3A to FIG. 3D, and FIG. 4. However, in various embodiments, not all of the components illustrated through FIG. 1 and FIG. 3A to FIG. 3D, and FIG. 4 are essential components, and the electronic device (101, 301) may be implemented with more components than the illustrated components, or may be implemented with fewer components. In addition, the positions of the main components of the electronic device (101, 301) described above through FIG. 1 and FIG. 3A to FIG. 3D, and FIG. 4 may be changed according to various embodiments.

[0113] According to one embodiment, an electronic device (e.g., electronic device (101) of FIG. 1, electronic device (301) of FIGS. 3A to 3D and FIG. 4) may include a first housing (e.g., first housing (310) of FIGS. 3A to 3D), a second housing (e.g., second housing (320) of FIG. 3B) connected to a portion of the first housing so as to be opened or closed, a coil (e.g., coil (410) of FIG. 4), a communication circuit (e.g., communication circuit (430) of FIG. 4), at least one processor including a processing circuit (e.g., processor (450) of FIG. 4), and a memory for storing instructions.

[0114] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to wirelessly transmit power to the wearable electronic device through the coil using short-range wireless communication based on determining proximity of the wearable electronic device (201) to the electronic device.

[0115] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to enter a power hold mode (PHM) based on receiving an entry message for the PHM from the wearable electronic device.

[0116] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to identify that the wearable electronic device is seated in the first housing based on a signal detected by a transmitting circuit included in the communication circuit while in the power standby mode.

[0117] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to exit the power standby mode based on receiving a release message for the power standby mode from the wearable electronic device.

[0118] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to wirelessly retransmit power to the wearable electronic device via the coil using the near-field wireless communication.

[0119] According to one embodiment, the entry message may be set using an NFC wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and may include information indicating entry into the power standby mode.

[0120] According to one embodiment, the release message may be set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and may include information indicating the release of the power standby mode.

[0121] According to one embodiment, the specified condition may include at least one of a fever condition, a full charge condition, or a safety timer expiration condition.

[0122] According to one embodiment, the NFC wireless charging protocol may include header information, length information, identification information of the wearable electronic device, status information of the wearable electronic device and expiration timer information of a power standby mode (PHM expired timer), request information of the electronic device, current (IOUT) information, and voltage (VRECT) information.

[0123] According to one embodiment, the status information of the wearable electronic device may include a ring hall status field, a safety timer field, a temperature status field, a PHM field, a full charge information field, and a pair status field of the wearable electronic device.

[0124] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to repeatedly perform an operation of turning off the transmitting circuit while in the power standby mode and turning on the transmitting circuit after a specified first time based on identifying an opening of the second housing while in the power standby mode until receiving the release message.

[0125] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to: turn off the transmission circuit for a specified second time (e.g., approximately 40 seconds) when the heat condition is satisfied based on identifying that the second housing is closed while in the power standby mode; and turn off the transmission circuit until the second housing is opened when the full charge condition and the safety timer condition are satisfied based on identifying that the second housing is closed.

[0126] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to identify that the wearable electronic device is detached from the first housing based on identifying that a signal (I2C_Read) is not detected from the transmitting circuit within a specified period of time.

[0127] According to one embodiment, the entry message for the power standby mode may be received from the wearable electronic device at a designated third time (30 second) interval.

[0128] According to one embodiment, the device further comprises a Hall circuit (hall IC) including a Hall sensor, wherein the memory can store instructions that, when individually or collectively executed by the at least one processor, cause the electronic device to use Hall status information about the Hall circuit to determine whether the wearable electronic device is seated.

[0129] According to one embodiment, a wearable electronic device (e.g., wearable electronic device (201) of FIGS. 2A, 2B, and 4) may include a coil (e.g., coil (210) of FIG. 4), a communication circuit (e.g., communication module (190) of FIG. 1 or communication circuit (280) of FIG. 4), at least one processor including a processing circuit (e.g., processor (1120) or processor (260) of FIG. 1), and a memory (e.g., memory (130) of FIG. 1 or memory (270) of FIG. 4)) for storing instructions.

[0130] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to wirelessly receive power from the electronic device through the coil using short-range wireless communication based on determining proximity to the electronic device (e.g., the electronic device (101) of FIG. 1 , the electronic device (301) of FIGS. 3A to 3C and FIG. 4 ).

[0131] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to set an entry message for the power standby mode based on determining that entry into the power standby mode is necessary based on a specified condition.

[0132] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to transmit the set entry message to the electronic device.

[0133] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to identify that the wearable electronic device is seated on the electronic device while in the power standby mode.

[0134] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to set a release message for the power standby mode based on determining that release from the power standby mode is necessary based on the specified condition.

[0135] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to transmit the set release message to the electronic device.

[0136] In one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to wirelessly re-receive power from the electronic device via the coil using the near-field wireless communication based on the power standby mode being released.

[0137] According to one embodiment, the entry message may be set using an NFC wireless charging protocol and may include information indicating entry into the power standby mode.

[0138] According to one embodiment, the release message may be set using the NFC wireless charging protocol and may include information indicating release of the power standby mode.

[0139] According to one embodiment, the specified condition may include at least one of a fever condition, a full charge condition, or a safety timer expiration condition.

[0140] According to one embodiment, the NFC wireless charging protocol may include header information, length information, identification information of the wearable electronic device, status information of the wearable electronic device and expired timer information of a power standby mode, request information of the electronic device, current (IOUT) information, and voltage (VRECT) information.

[0141] According to one embodiment, the status information of the wearable electronic device may include a ring hall status field, a safety timer field, a temperature status field, a PHM field, a full charge information field, and a pair status field of the wearable electronic device.

[0142] According to one embodiment, it may further include a Hall circuit (hall IC) including a Hall sensor.

[0143] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to determine whether a charging voltage (VOUT) and Hall sensing information obtained from the Hall circuit are installed in the electronic device.

[0144] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to re-verify entry into the power standby mode at a specified third time (30 second) interval.

[0145] According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the wearable electronic device to re-verify entry into the power standby mode at a specified third time interval.

[0146] FIG. 6 is a diagram illustrating an example of an operating method for wireless charging in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0147] Referring to FIG. 6, an electronic device according to an embodiment (e.g., the electronic device 101 of FIG. 1, the electronic device 301 of FIGS. 3A to 3C and 4) may, in operation 601, determine the proximity of a wearable electronic device (e.g., the wearable electronic device 201 of FIGS. 2A, 2B and 4) to the electronic device and perform a connection for wireless charging with the wearable electronic device. For example, the electronic device may determine the proximity of the wearable electronic device to the electronic device based on determining that the wearable electronic device is located within a coverage for short-range wireless communication (e.g., NFC communication) with the electronic device. The short-range wireless communication supported by the electronic device may include a communication method for wireless power transmission based on an NFC protocol or a Qi protocol, but the specific communication method is not limited thereto.

[0148] In operation 603, the electronic device can wirelessly transmit power to the wearable electronic device through a coil (e.g., coil (410) of FIG. 4) based on the proximity of the wearable electronic device. For example, the coil can wirelessly transmit power to the external electronic device using a resonant frequency specified according to a voltage applied from a matching circuit (e.g., matching circuit (440) of FIG. 4).

[0149] In operation 605, the electronic device may determine whether an entry message for a power hold mode (PHM) is received from the wearable electronic device while wirelessly transmitting power to the wearable electronic device. If the entry message is received, the electronic device may perform operation 607, and if not, may continue performing the wireless charging operation of transmitting power in operation 603. The entry message may be received from the wearable electronic device (201) through the communication circuit (430) at a specified third time interval (e.g., 30 seconds). According to one embodiment, the wearable electronic device may determine whether entry into the power hold mode is required based on a specified condition, and may obtain entry information for the power hold mode. If the wearable electronic device determines that entry into the power hold mode is required, the wearable electronic device may set an entry message (e.g., a WLC_CTL message) using the NFC wireless charging protocol illustrated in FIG. 5 based on the obtained entry information. Here, the specified condition may include at least one of a heating condition, a full charge condition, or a safety timer expiration condition. For example, the NFC wireless charging protocol may be set to 10 bytes as illustrated in FIG. 5, and may include header information, length information, identification information of the wearable electronic device (201) (size, version field), status information of the wearable electronic device (201), and expiration timer information of the power standby mode (PHM expired timer) (e.g., 30-second unit time data), cradle request information, current (IOUT) information, and voltage (VRECT) information. The present invention is not limited thereto, and other fields may further include other information related to a wireless charging operation using NFC.Status information (e.g., ring status) of a wearable electronic device may include a hall status (e.g., ring hall status) field indicating whether the wearable electronic device (201) is seated, a safety timer (e.g., safety timer value) field, a temperature status (e.g., temp status) field, a PHM field, full charge information (e.g., EOC) field, and a paired status (paired) field. As illustrated in FIG. 5, the entry message may include information indicating entry into a power standby mode (PHM field value: 1), information indicating seatedness (e.g., hall status field value: 0), information indicating that the safety timer is normal (e.g., safety timer field value: 0), information indicating temperature control or temperature cutoff (e.g., temperature status field value: 01 or 10), information indicating full charge (e.g., EOC field value: 0), and information indicating a paired status (e.g., paired field: 1) using an NFC wireless charging protocol.

[0150] In operation 607, the electronic device may enter a power standby mode and perform a power standby operation based on confirming receipt of an entry message. In operation 607, the electronic device may repeatedly or periodically check for opening or closing of the second housing (e.g., the second housing (320) of FIG. 3B) while in the power standby mode (e.g., while performing the power standby operation). According to one embodiment, the electronic device may repeatedly perform an operation of transmitting a charging disable signal to the transmitting circuit to turn off the transmitting circuit based on identifying the opening of the second housing (e.g., the second housing (320) of FIG. 3B) while in the power standby mode, and transmitting a charging enable signal to the transmitting circuit to turn on the transmitting circuit after a specified first time (e.g., 2 seconds) until receiving a release message. In one embodiment, the electronic device may transmit a charge disable signal to the transmitting circuit to turn off the transmitting circuit for a specified second period of time (e.g., 40 seconds) when a heating condition is satisfied based on identifying that the second housing is closed, and may transmit a charge disable signal to the transmitting circuit to turn off the transmitting circuit until the second housing is opened when a full charge condition and a safety timer condition are satisfied.

[0151] In operation 609, the electronic device can determine whether the wearable electronic device is seated in the first housing (e.g., the first housing (310) of FIGS. 3A to 3D) based on a signal detected by a transmitter circuit (431) (TX IC) included in a communication circuit (e.g., the communication circuit (430) of FIG. 4) while in a power standby mode (e.g., while performing a power standby operation). If the electronic device determines that the wearable electronic device is seated (e.g., positioned) in the first housing, the electronic device can perform operation 611, and if the electronic device determines that the wearable electronic device is detached (e.g., separated) from the first housing, the electronic device can stop wireless charging and end the operation. According to one embodiment, the electronic device can detect a signal (I2C_Read detected) of communication between a processor and a transmission circuit (TX IC) (e.g., a signal indicating that the wearable electronic device is installed) after the transmission circuit (TX IC) included in the communication circuit is turned ON, and if the signal is detected, the electronic device can determine that the wearable electronic device (201) is installed. If the signal is not detected, the electronic device can determine that the wearable electronic device (201) is detached (e.g., separated) from the first housing.

[0152] In operation 611, the electronic device may determine whether a release message for a power standby mode is received from the wearable electronic device based on confirmation that the wearable electronic device is seated (e.g., positioned) in the first housing. If the release message is received as a result of confirmation, operation 613 may be performed, and if not, operation 607 may be performed. According to one embodiment, the wearable electronic device (201) may determine whether release from the power standby mode is required based on a specified condition, and may obtain release information for the power standby mode. If the wearable electronic device (201) determines that release from the power standby mode is required, the wearable electronic device (201) may set a release message (WLC (Wireless network protocol)_CTL (control) message) using the NFC wireless charging protocol illustrated in FIG. 5 based on the obtained release information. The release message may include information indicating release of the power standby mode (PHM field value: 1), information indicating detachment (e.g., Hall status field value: 1), information indicating expiration of the safety timer (e.g., Safety Timer field value: 1), information indicating that the temperature is normal (e.g., Temperature status field value: 00), information indicating charging (e.g., EOC field value: 1), and information indicating pair status (e.g., paired field: 0 or 1), using the NFC wireless charging protocol, as illustrated in FIG. 5.

[0153] In operation 613, the electronic device may exit standby mode based on receiving a release message. Subsequently, the electronic device may perform operation 603 to wirelessly retransmit power to the wearable electronic device via the coil using short-range wireless communication.

[0154] Figure 7 is a diagram illustrating an example of an operational method for wireless charging in a wearable electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0155] Referring to FIG. 7, a wearable electronic device (e.g., the wearable electronic device (201) of FIGS. 2A, 2B, and 4) according to one embodiment may perform a connection for wireless charging with an electronic device (e.g., the electronic device (101) of FIG. 1, the electronic device (301) of FIGS. 3A to 3C, and FIG. 4) in operation 701. For example, the wearable electronic device may connect with an electronic device based on the electronic device being located within a coverage area for short-range wireless communication (e.g., NFC communication). The short-range wireless communication supported by the wearable electronic device may include a communication method for wireless power transmission based on an NFC protocol or a Qi protocol, but the specific communication method is not limited thereto.

[0156] In operation 703, the wearable electronic device can wirelessly receive power from the electronic device through a coil (e.g., coil (210) of FIG. 4) based on proximity to the electronic device, thereby performing wireless charging.

[0157] In operation 705, the wearable electronic device may determine whether entry into a power standby mode is required based on a specified condition while wirelessly receiving power from the electronic device. If the determination result indicates that entry into a power standby mode is required, the wearable electronic device may perform operation 707. Otherwise, the wearable electronic device may continue to perform the wireless charging operation of receiving power in operation 703.

[0158] In operation 707, if the wearable electronic device determines that entry into the power standby mode is required, the wearable electronic device may acquire entry information for the power standby mode based on a specified condition, and based on the acquired entry information, may set an entry message (e.g., a WLC_CTL message) using the NFC wireless charging protocol illustrated in FIG. 5. The wearable electronic device may transmit the set entry message to the electronic device. Here, the specified condition may include at least one of a heating condition, a full charge condition, or a safety timer expiration condition. For example, the NFC wireless charging protocol may be set to 10 bytes, as illustrated in FIG. 5, and may include header information, length information, identification information (size, version field) of the wearable electronic device (201), status information of the wearable electronic device (201), and expiration timer information (PHM expired timer) of the power standby mode (e.g., 30-second unit time data), cradle request information (request cradle info), current (IOUT) information, and voltage (VRECT) information. The present invention is not limited thereto, and other information related to a wireless charging operation using NFC may be further included in other fields. Status information (e.g., ring status) of the wireless wearable electronic device may include a hall status (e.g., ring hall status) field indicating whether the wearable electronic device (201) is seated, a safety timer (e.g., safety timer value) field, a temperature status (e.g., temp status) field, a PHM field, full charge information (e.g., EOC) field, and a paired status field.As illustrated in FIG. 5, the entry message may include information indicating entry into power standby mode (PHM field value: 1), information indicating settling (e.g., hall status field value: 0), information indicating that the safety timer is normal (e.g., safety timer field value: 0), information indicating temperature control or temperature cutoff (e.g., temperature status field value: 01 or 10), information indicating full charge (e.g., EOC field value: 0), and information indicating pair status (e.g., paired field: 1) using the NFC wireless charging protocol.

[0159] In one embodiment, the wearable electronic device may re-check whether entry into a power standby mode is required at designated intervals of time (e.g., 30 seconds) and may re-transmit the entry message upon re-checking entry.

[0160] In operation 709, while the wearable electronic device is in a power standby mode (e.g., while performing a power standby operation), the wearable electronic device can determine whether the wearable electronic device is seated in the first housing of the electronic device using Hall sensing information obtained from a charging voltage (VOUT) and a Hall circuit (e.g., the Hall circuit (209) of FIG. 4). If the wearable electronic device determines that the wearable electronic device is seated (e.g., positioned) in the first housing, the wearable electronic device performs operation 711, and if the wearable electronic device determines that the wearable electronic device is detached (e.g., separated) from the first housing, the wearable electronic device can stop wireless charging and end the operation.

[0161] In operation 711, the wearable electronic device can determine whether the power standby mode (PHM) needs to be released. If the wearable electronic device determines that the power standby mode needs to be released, the wearable electronic device performs operation 713. Otherwise, in operation 707, the wearable electronic device obtains entry information for the power standby mode, and based on the obtained entry information, sets an entry message (e.g., a WLC_CTL message) using the NFC wireless charging protocol illustrated in FIG. 5. The wearable electronic device can transmit the set entry message to the electronic device.

[0162] In operation 713, the wearable electronic device is mounted (e.g., positioned) on the first housing of the electronic device, and upon determining that the power standby mode needs to be released, the wearable electronic device may acquire release information for the power standby mode based on a specified condition, and may set a release message (e.g., a WLC_CTL message) using the NFC wireless charging protocol illustrated in FIG. 5 based on the acquired release information. The wearable electronic device may transmit the set release message to the electronic device. The release message may include, as illustrated in FIG. 5, information indicating release of the power standby mode (PHM field value: 1), information indicating detachment (e.g., Hall status field value: 1), information indicating expiration of a safety timer (e.g., Safety Timer field value: 1), information indicating that the temperature is normal (e.g., Temperature status field value: 00), information indicating charging (e.g., EOC field value: 1), and information indicating a pair status (e.g., paired field value: 0 or 1), using the NFC wireless charging protocol.

[0163] Thereafter, the wearable electronic device can perform operation 703 to wirelessly re-receive power from the electronic device through the coil using near-field wireless communication.

[0164] FIG. 8 is a diagram illustrating an example of an operation method for wireless charging of an electronic device and a wearable electronic device in a system for wireless charging according to one embodiment, and FIGS. 9A, 9B, 9C, and 9D are graphs illustrating an example of an operation method for wireless charging according to one embodiment. In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel.

[0165] Referring to FIG. 8, an electronic device according to one embodiment (e.g., electronic device (101) of FIG. 1, electronic device (301) of FIGS. 3A to 3C and FIG. 4) may include a processor (450) and a communication circuit (430), and a wearable electronic device (e.g., wearable electronic device (201) of FIGS. 2A, 2B and 4) may include a processor (260) and a communication circuit (280).

[0166] Referring to FIGS. 8, 9a, 9b, 9c, and 9d, an electronic device (301) according to an embodiment may perform a wireless charging operation of wirelessly transmitting power to a wearable electronic device (201) through a coil (e.g., coil 410 of FIG. 4) based on confirming the proximity of a wearable electronic device (201) to the electronic device (301) in operation 801. For example, the electronic device (301) may confirm the proximity of the wearable electronic device (201) to the electronic device (301) based on confirming that the wearable electronic device (201) is located within a coverage for short-range wireless communication (e.g., NFC communication) with the electronic device (301). The short-range wireless communication supported by the electronic device (301) may include a communication method for wireless power transmission based on an NFC protocol or a Qi protocol, but the specific communication method is not limited thereto.

[0167] In operation 803, the wearable electronic device (201) may determine, by the processor (260) (e.g., MCU), whether entry into a power hold mode (PHM) is required based on a specified condition while receiving power wirelessly. Operation 803 may be performed while the electronic device (301) is performing operation 801.

[0168] In operation 805, if the wearable electronic device (201) identifies that entry into a power standby mode is required by the processor (260) (e.g., MCU), the wearable electronic device (201) may set an entry message using the NFC wireless charging protocol illustrated in FIG. 5 based on the identified specified condition, and transmit data of the set entry message (e.g., I2C_Write WLC_CTL_payload message) to the communication circuit (280). In operation 807, the communication circuit (280) of the wearable electronic device (201) may transmit an entry message (e.g., WLC_CTL message) to the electronic device (301) through a specified channel. Here, the specified condition may include at least one of a heating condition, a full charge condition, or a safety timer expiration condition. For example, the NFC wireless charging protocol may be set to 10 bytes as illustrated in the above FIG. 5, and may include header information, length information, identification information of the wearable electronic device (201) (size, version field), status information of the wearable electronic device (201), and expiration timer information of the power standby mode (PHM expired timer) (e.g., 30-second unit time data), cradle request information, current (IOUT) information, and voltage (VRECT) information. The present invention is not limited thereto, and may further include other information related to a wireless charging operation using NFC in other fields. Status information (e.g., ring status) of a wireless wearable electronic device (201) may include a hall status (e.g., ring hall status) field indicating whether the wearable electronic device (201) is seated, a safety timer (e.g., safety timer value) field, a temperature status (e.g., temp status) field, a PHM field, a full charge information (e.g., EOC) field, and a paired status field.As illustrated in FIG. 5, the entry message may include information indicating entry into a power standby mode (PHM field value: 1), information indicating settling (e.g., hall status field value: 0), information indicating that the safety timer is normal (e.g., safety timer field value: 0), information indicating temperature control or temperature cutoff (e.g., temperature status field value: 01 or 10), information indicating full charge (e.g., EOC field value: 0), and information indicating a closed state (e.g., paired field value: 1) using the NFC wireless charging protocol.

[0169] In operation 807, the communication circuit (430) of the electronic device (301) may receive an entry message (e.g., a WLC_CTL message) including PHM entry information from the communication circuit (280) of the wearable electronic device (201). In operation 809, the communication circuit (430) of the electronic device (301) may transmit an entry message (I2C read WLC_CTL) for power standby mode to the processor (450) based on receiving the entry message (e.g., the WLC_CTL message).

[0170] In operation 811, the processor (450) of the electronic device (301) may enter a power standby mode (PHM) based on an entry message (I2C read WLC_CTL) received from the communication circuit (430). In operation 813, the processor (450) of the electronic device (301) may perform a power standby operation (e.g., an operation of repeatedly transmitting a charging_disable signal, transmitting a charging_enable signal, and receiving an I2C read detected) in the power standby mode (PHM) for a specified third time (e.g., 30 seconds) before receiving a release message for the power standby mode. The power standby mode (PHM) may mean an operation of turning on / off the transmission power (tx power) transmitted to the wearable electronic device (201) based on the electronic device (301), and at this time, the wearable electronic device (201) may maintain a state in which it is mounted on the electronic device (101).

[0171] In operation 813, the processor (450) of the electronic device (301) may repeatedly or periodically check for opening or closing of the second housing (e.g., the second housing (320) of FIG. 3B) while in power standby mode (e.g., while performing a power standby operation). According to one embodiment, the electronic device (301) may repeatedly perform an operation of transmitting a charging disable signal to the transmitting circuit to turn off a transmitting circuit included in the communication circuit to turn off transmission power (tx power) transmitted to the wearable electronic device (201) based on identifying an opening of the second housing (e.g., the second housing (320) of FIG. 3B) while in a power standby mode, and transmitting a charging enable signal to the transmitting circuit to turn on the transmitting circuit included in the communication circuit to turn on transmission power (tx power) transmitted to the wearable electronic device (201) after a specified first time (e.g., 2 seconds) until receiving a release message for the power standby mode. According to one embodiment, the electronic device (301) may transmit a charge disable signal to a transmission circuit included in the communication circuit (430) to turn off the transmission circuit for a specified second period of time (e.g., 40 seconds) when a heating condition is satisfied based on identifying that the second housing is closed, and may transmit a charge disable signal to a transmission circuit included in the communication circuit (430) to turn off the transmission circuit until the second housing is opened when a full charge condition and a safety timer condition are satisfied.

[0172] According to one embodiment, the electronic device (301) may determine, by the processor (450), in operation 8013, whether the wearable electronic device (201) is seated in the first housing (e.g., the first housing (310) of FIGS. 3A to 3D) based on a signal detected by a transmission circuit (TX IC) included in a communication circuit (e.g., the communication circuit (430) of FIG. 4) while in a power standby mode (e.g., while performing a power standby operation). According to one embodiment, the electronic device (301) may transmit, by the processor (450), a charging enable signal to turn on the transmission circuit (TX IC) included in the communication circuit (430), and then detect a signal (I2C_Read detected) of communication between the processor (450) and the transmission circuit (TX IC) of the communication circuit (430) (e.g., a signal indicating that the wearable electronic device (201) is seated). The electronic device (301) can determine that the wearable electronic device (201) is installed when the processor (450) detects the signal (I2C_Read detected). The electronic device (301) can determine that the wearable electronic device (201) is detached (e.g., separated) from the first housing when the processor (450) does not detect the signal. According to one embodiment, the wearable electronic device (201) can determine that the wearable electronic device (201) is installed in the first housing based on the output voltage (e.g., VOUT: 5 V) of a regulator (e.g., regulator (240) of FIG. 4) that outputs a charging voltage to a charging circuit (e.g., charging circuit (251) of FIG. 4) when an output voltage (VRECT) of a rectifier circuit (e.g., rectifier circuit (230) of FIG. 4) is applied, as illustrated in FIG. 9D. Here, VRECT refers to the rectified voltage of AC voltage rectified by a rectifier circuit, and Vout refers to the voltage of VRECT voltage that has been converted to 5V through a constant voltage circuit.For example, when the second housing of the electronic device (301) is closed, the power standby operation (e.g., charging disable & enable operation) may be performed for a second time period (e.g., approximately 40 seconds) as the transmitting circuit (tx IC) is turned off. When the second housing of the electronic device (301) is opened, the electronic device (301) may be caused by the processor (450) to perform the power standby operation (e.g., charging disable & enable operation) for a specified first time period (e.g., approximately 2 seconds). For example, the graph of FIG. 9A shows that the electronic device enters the PHM as the output voltage (VRECT) satisfies the full charge condition by being 5 V or higher, and may show that the voltage according to the power standby operation is output periodically according to the ping interval (charging disable & enable time 2 seconds) according to the power standby operation. The graph of FIG. 9b can show that a power standby operation (e.g., detecting a signal to check whether a settling is established (e.g., checking data (e.g., entry information or release information) up to 10 bytes) can be performed) for a specified number of times (e.g., 14 repeated checks) at a specified second time (901) (e.g., approximately 40 seconds (395 ms)). The graph of FIG. 9c can show that the entire data of a control message (WLC_CTL) (e.g., entry message or release message) can be checked for a specified third time (903) (e.g., approximately 80 seconds (e.g., 835 ms)) at the next cycle (e.g., 15th check).

[0173] In operation 815, the wearable electronic device (201) may determine whether the power standby mode needs to be released based on a specified condition by the processor (260) (e.g., MCU). In operation 819, if the power standby mode needs to be released by the processor (260), the processor may set a release message (WLC (Wireless network protocol)_CTL (control) message) using the NFC wireless charging protocol illustrated in FIG. 5 based on the determined reference condition, and transmit data (I2C_write WLC_CTL_payload) of the set release message to the communication circuit (280). Operations 815 and 817 may be performed while the electronic device (301) performs operation 8013. Here, the release message may include information indicating release of the power standby mode (PHM field value: 1), information indicating detachment (e.g., Hall status field value: 1), information indicating expiration of the safety timer (e.g., Safety Timer field value: 1), information indicating that the temperature is normal (e.g., Temperature status field value: 00), information indicating charging (e.g., EOC field value: 1), and information indicating pair status (e.g., paired field: 0 or 1), using the NFC wireless charging protocol as illustrated in FIG. 5.

[0174] In operation 819, the wearable electronic device (201) may transmit a power standby mode release message (WLC_CLT (with PHM release information)) including PHM release information to the electronic device (301) through a designated communication channel via the communication circuit (280) (e.g., NTAG). Operation 819 may be performed while the electronic device (301) is performing operation 8013.

[0175] In operation 821, the communication circuit (430) of the electronic device (301) may transmit a release message (I2C read WLC CTL (10 bytes)) including PHM release information to the processor (450) based on receiving a release message of the power standby mode from the wearable electronic device (201). In operation 823, the processor (450) of the electronic device (301) may release the power standby mode based on the release message (I2C read WLC CTL (10 bytes)) received from the communication circuit (430).

[0176] In operation 825, the electronic device (301) may perform a wireless charging operation (e.g., ring charging) by wirelessly retransmitting power to the wearable electronic device (201) through the coil using short-range wireless communication by the processor (450).

[0177] According to one embodiment, a method of operating an electronic device (e.g., electronic device (101) of FIG. 1, electronic device (301) of FIGS. 3A to 3C and FIG. 4) may include an operation of wirelessly transmitting power to a wearable electronic device (e.g., wearable electronic device (201) of FIGS. 2A, 2B and 4) via a coil of the electronic device (e.g., coil (410) of FIG. 4) using short-range wireless communication based on determining proximity of the electronic device to the wearable electronic device.

[0178] According to one embodiment, the method may include an operation of entering the power standby mode based on receiving an entry message for the power standby mode from the wearable electronic device.

[0179] According to one embodiment, the method may include an operation of identifying that the wearable electronic device is seated in a first housing (e.g., the first housing (310) of FIGS. 3A to 3D) of the electronic device based on a signal detected by a transmission circuit (e.g., the transmission circuit (430) of FIG. 4) included in a communication circuit (e.g., the communication circuit (430) of FIG. 4) of the electronic device while in the power standby mode.

[0180] According to one embodiment, the method may include an operation of releasing the power standby mode and wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication based on receiving a release message for the power standby mode from the wearable electronic device.

[0181] According to one embodiment, the entry message may be set using an NFC wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and may include information indicating entry into the power standby mode.

[0182] According to one embodiment, the release message may be set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and may include information indicating the release of the power standby mode.

[0183] According to one embodiment, the specified condition may include at least one of a fever condition, a full charge condition, or a safety timer expiration condition.

[0184] According to one embodiment, the NFC wireless charging protocol may include a field for identification information (size, version) of the wearable electronic device, a field for status information of the wearable electronic device, and a field for an expiration timer of the power standby mode.

[0185] According to one embodiment, the status information of the wearable electronic device may include a hole status value, a safety timer value, a temperature status value, a PHM value, an EOC value, and a paired status value indicating whether the wearable electronic device is installed.

[0186] According to one embodiment, the method may further include an operation of repeatedly performing an operation of turning off the transmitting circuit while in the power standby mode and turning on the transmitting circuit after a specified first time based on identifying an opening of a second housing (e.g., the second housing (320) of FIG. 3B) of the electronic device while in the power standby mode until the release message is received.

[0187] In one embodiment, the method may further include an operation of turning off the transmission circuit for a specified second time when the heating condition is satisfied based on identifying that the second housing is closed while in the power standby mode, and an operation of turning off the transmission circuit until the second housing is opened when the full charge condition and the safety timer condition are satisfied based on identifying that the second housing is closed.

[0188] In one embodiment, the method may further include an action of identifying that the wearable electronic device is detached from the first housing based on identifying that a signal (I2C_Read) is not detected from the transmitting circuit within a specified time period.

[0189] According to one embodiment, the method may further include an operation of checking whether the wearable electronic device is seated using hole state information for the hole circuit.

[0190] According to one embodiment, the entry message for the power standby mode may be received from the wearable electronic device at a specified third time interval.

[0191] According to one embodiment, in a non-transitory storage medium storing one or more programs, the one or more programs, when executed by at least one processor (450) of an electronic device (301), may include an operation of causing the electronic device to wirelessly transmit power to the wearable electronic device through a coil (410) of the electronic device using short-range wireless communication based on determining proximity of the wearable electronic device (201) to the electronic device.

[0192] According to one embodiment, the one or more programs, when executed by at least one processor of the electronic device, may include an action that causes the electronic device to enter the power standby mode based on receiving an entry message for the power standby mode from the wearable electronic device.

[0193] According to one embodiment, the one or more programs, when executed by at least one processor of the electronic device, may include an operation that causes the electronic device to identify that the wearable electronic device is seated in the first housing (310) of the electronic device based on a signal detected by a transmitting circuit included in a communication circuit (430) of the electronic device while in the power standby mode.

[0194] According to one embodiment, the one or more programs may include instructions that, when executed by at least one processor of the electronic device, cause the electronic device to perform an operation of releasing the power standby mode and wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication, based on receiving a release message for the power standby mode from the wearable electronic device.

[0195] According to one embodiment, the entry message may be set using an NFC wireless charging protocol based on confirmation of entry into the power standby mode based on a condition specified by the wearable electronic device, and may include information indicating entry into the power standby mode.

[0196] According to one embodiment, the release message may be set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on a specified condition, and may include information indicating the release of the power standby mode.

[0197] The present disclosure can improve the discharge speed and heat generation of a wearable electronic device after it is fully charged by applying a power standby mode (PHM). According to one embodiment of the present disclosure, when a small, ring-shaped wearable electronic device generates heat above a certain level during charging or charging, the device disconnects all communication with the wearable electronic device and restarts operation after a certain period of time, thereby preventing unnecessary battery consumption of the electronic device (e.g., a cradle) and improving charging efficiency. In addition, the wearable electronic device can be easily worn immediately after charging by reducing heat generation. In addition, various effects that can be directly or indirectly understood through this document can be provided. The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art to which the present disclosure pertains from the description below.

[0198] The embodiments disclosed in this document are presented for the purpose of explaining and understanding the disclosed technical content, and do not limit the scope of the technology described in this document. Therefore, the scope of this document should be interpreted to include all modifications or various other embodiments based on the technical concepts of this document.

[0199] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0200] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0201] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0202] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0203] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0204] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In the electronic device (301), First housing (310); A second housing (320) connected to a portion of the first housing so as to be opened or closed; coil (410); Communication circuit (430); At least one processor (450) comprising a processing circuit; and Contains memory containing instructions, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Based on the confirmation of the proximity of the wearable electronic device (201) to the electronic device, power is wirelessly transmitted to the wearable electronic device through the coil using short-range wireless communication, Entering the power hold mode (PHM) based on receiving an entry message for the power hold mode (PHM) from the wearable electronic device, Identifying that the wearable electronic device is installed in the first housing based on a signal detected by a transmitting circuit included in the communication circuit while in the power standby mode; Based on receiving a release message for the power standby mode from the wearable electronic device, releasing the power standby mode and causing power to be wirelessly retransmitted to the wearable electronic device through the coil using the short-range wireless communication, The above entry message is set using a near field communication (NFC) wireless charging protocol based on confirmation of entry into the power standby mode based on conditions specified by the wearable electronic device, and includes information indicating entry into the power standby mode. An electronic device, wherein the release message is set using the NFC wireless charging protocol based on the release of the power standby mode confirmed by the wearable electronic device based on the specified conditions, and includes information indicating the release of the power standby mode.

2. In paragraph 1, The above specified conditions include at least one of a fever condition, a full charge condition, or a safety timer expiration condition, The NFC wireless charging protocol includes header information, length information, identification information of the wearable electronic device, status information of the wearable electronic device and expired timer information of a power standby mode, request information of the electronic device, current (IOUT) information, and voltage (VRECT) information. An electronic device, wherein the status information of the wearable electronic device includes a ring hall status field, a safety timer field, a temperature status field, a PHM field, a full charge information field, and a pair status field of the wearable electronic device.

3. In any one of paragraphs 1 and 2, when the instructions are individually or collectively executed by the at least one processor, the electronic device: An electronic device that causes an operation of turning off the transmitting circuit while in the power standby mode and turning on the transmitting circuit after a specified first time based on identifying the opening of the second housing while in the power standby mode to be repeatedly performed until the release message is received.

4. In any one of paragraphs 1 to 3, when the instructions are individually or collectively executed by the at least one processor, the electronic device: Based on identifying that the second housing is closed while in the power standby mode, when the heat generation condition is satisfied, turning off the transmitting circuit for a specified second time, Based on identifying that the second housing is closed, when the full charge condition and the safety timer condition are satisfied, the electronic device causes the transmitting circuit to be turned off until the second housing is opened.

5. In any one of paragraphs 1 to 4, when the instructions are individually or collectively executed by the at least one processor, the electronic device: Causes the wearable electronic device to be identified as being detached from the first housing based on identifying that no signal (I2C_Read) is detected from the transmitting circuit within a specified time period.

6. In any one of paragraphs 1 to 5, An electronic device, wherein the entry message for the power standby mode is received from the wearable electronic device at a specified third time interval.

7. In any one of paragraphs 1 to 6, It further includes a Hall circuit (hall IC) including a Hall sensor, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Causes the wearable electronic device to be seated using the hole status information for the above hole circuit, and the electronic device.

8. In the operating method in the electronic device (301), An operation of wirelessly transmitting power to the wearable electronic device through a coil (410) of the electronic device using short-range wireless communication based on confirming the proximity of the wearable electronic device (201) to the electronic device; An operation of entering the power standby mode based on receiving a message for entering the power standby mode from the wearable electronic device; An operation of identifying that the wearable electronic device is installed in the first housing (310) of the electronic device based on a signal detected by a transmitting circuit included in a communication circuit (430) of the electronic device while in the power standby mode; and An operation of releasing the power standby mode and wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication based on receiving a release message for the power standby mode from the wearable electronic device, The above entry message is set using an NFC wireless charging protocol based on the confirmation of entry into the power standby mode based on conditions specified by the wearable electronic device, and includes information indicating entry into the power standby mode. A method wherein the release message is set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on the specified conditions, and includes information indicating the release of the power standby mode.

9. In paragraph 8, The above specified conditions include at least one of a fever condition, a full charge condition, or a safety timer expiration condition, The NFC wireless charging protocol includes a field for identification information (size, version) of the wearable electronic device, a field for status information of the wearable electronic device, and a field for an expiration timer of the power standby mode. A method wherein the status information of the wearable electronic device includes a hall status value, a safety timer value, a temperature status value, a PHM value, an EOC value, and a paired status value indicating whether the wearable electronic device is installed.

10. In the 8th or 9th paragraph, the method, A method further comprising an operation of repeatedly performing an operation of turning off the transmitting circuit while in the power standby mode and turning on the transmitting circuit after a specified first time based on identifying an opening of the second housing (320) of the electronic device while in the power standby mode until the release message is received.

11. In any one of the 8th to 10th clauses, the method, An operation of turning off the transmitting circuit for a specified second time period when the heat generation condition is satisfied based on identifying that the second housing is closed while in the power standby mode; and A method further comprising: based on identifying that the second housing is closed, turning off the transmitting circuit until the second housing is opened when the full charge condition and the safety timer condition are satisfied.

12. In any one of the 8th to 11th clauses, the method, A method further comprising the action of identifying that the wearable electronic device is detached from the first housing based on identifying that a signal (I2C_Read) is not detected from the transmitting circuit within a specified time period.

13. In any one of the 8th to 12th clauses, the method, A method further comprising an operation of checking whether the wearable electronic device is seated using the hole status information for the hole circuit.

14. In any one of paragraphs 8 to 13, A method wherein the entry message for the power standby mode is received from the wearable electronic device at a specified third time interval.

15. In a non-transitory storage medium storing one or more programs, the one or more programs, when executed by at least one processor (450) of an electronic device (301), cause the electronic device to: An operation of wirelessly transmitting power to the wearable electronic device through a coil (410) of the electronic device using short-range wireless communication based on confirming the proximity of the wearable electronic device (201) to the electronic device; An operation of entering the power standby mode based on receiving a message for entering the power standby mode from the wearable electronic device; An operation of identifying that the wearable electronic device is installed in the first housing (310) of the electronic device based on a signal detected by a transmitting circuit included in a communication circuit (430) of the electronic device while in the power standby mode; and Based on receiving a release message for the power standby mode from the wearable electronic device, instructions are included to release the power standby mode and execute an operation of wirelessly retransmitting power to the wearable electronic device through the coil using the short-range wireless communication. The above entry message is set using an NFC wireless charging protocol based on the confirmation of entry into the power standby mode based on conditions specified by the wearable electronic device, and includes information indicating entry into the power standby mode. A non-transitory storage medium, wherein the release message is set using the NFC wireless charging protocol based on the release of the power standby mode being confirmed by the wearable electronic device based on the specified conditions, and includes information indicating the release of the power standby mode.

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