KR20230018630A - Electronic device and operation method thereof - Google Patents

Abstract

An electronic device according to one embodiment disclosed in the document comprises: a connector which comprises at least one signal terminal; an identification circuit which is electrically connected to the connector; a switching circuit which is electrically connected to the connector; a battery; a memory; and a processor which is operatively connected to the identification circuit, the switching circuit, the battery and the memory. According to one embodiment, the memory may store instructions, wherein, when executed, the processor uses the identification circuit to recognize an external electronic device to be electrically connected to the electronic device through the connector, and uses the switching circuit to discharge energy within a capacitor electrically connected to at least one of a first signal terminal and a second signal terminal among the at least one signal terminal and, based on a voltage level difference between the first and second signal terminals, determines whether to output a power voltage based on the battery through the connector to the external electronic device. Moreover, various embodiments understood through the specification may be provided. According to various embodiments, the present invention can provide an electronic device which connects at least one signal terminal connected to an external electronic device to a discharging circuit and determines whether to output a power voltage to the external electronic device.

Description

Electronic device and operation method of electronic device {ELECTRONIC DEVICE AND OPERATION METHOD THEREOF}

Various embodiments disclosed in this document relate to an electronic device and an operating method of the electronic device.

As demand for expansion of resources such as memory or power increases, cases in which two or more electronic devices are connected are increasing. The electronic device may be connected to various external electronic devices, and may receive data from the external electronic device or transmit data to the external electronic device. Also, the electronic device may receive power from an external electronic device or transmit power to the external electronic device.

The electronic device may be electrically connected to an external electronic device. An external electronic device generates a high voltage using a power supply voltage received from the electronic device and applies the generated high voltage to the electronic device, resulting in burnout of internal components of the electronic device.

In various embodiments disclosed in this document, after connecting at least one signal terminal connected to an external electronic device to a discharge circuit, based on the voltage level of the at least one signal terminal, whether or not a power voltage is output to the external electronic device is determined. An electronic device capable of determining may be provided.

An electronic device according to an embodiment disclosed in this document includes a connector including at least one signal terminal, an identification circuit electrically connected to the connector, a switching circuit electrically connected to the connector, a battery, a memory, and the identification circuit; and a processor operatively connected to the switching circuit, the battery, and the memory. According to an embodiment, when the memory is executed, the processor, using the identification circuit, recognizes that an external electronic device is electrically connected to the electronic device through the connector, and uses the switching circuit to: Discharging energy in a capacitor electrically connected to at least one of a first signal terminal and a second signal terminal among the at least one signal terminal, and a voltage level difference between the first signal terminal and the second signal terminal Based on this, instructions for determining whether to output a power voltage based on the battery through the connector to the external electronic device may be stored.

In addition, a method of operating an electronic device according to an embodiment disclosed in this document includes an operation of recognizing that an external electronic device is electrically connected to the electronic device through a connector, and among at least one signal terminal included in the connector. Based on an operation of discharging energy in a capacitor electrically connected to at least one of the first signal terminal and the second signal terminal and a voltage level difference between the first signal terminal and the second signal terminal, An operation of determining whether to output the power supply voltage through the connector may be included.

According to various embodiments disclosed in this document, after connecting at least one signal terminal connected to an external electronic device to a discharge circuit, whether or not a power voltage is output to the external electronic device based on the voltage level of the at least one signal terminal An electronic device capable of determining may be provided.

In addition, various effects identified directly or indirectly through this document may be provided.

1 is a block diagram of an electronic device in a network environment, according to various embodiments.
2 is a block diagram of an electronic device according to various embodiments.
3 is a block diagram of an electronic device and an external electronic device, according to various embodiments.
4 illustratively illustrates a high voltage generating circuit included in an external electronic device according to various embodiments.
5 is a flowchart of a method of operating an electronic device according to various embodiments.
6 is a flowchart of a method of operating an electronic device according to various embodiments.
7 is a flowchart of a method of operating an electronic device according to various embodiments.
8 is a flowchart of a method of operating an electronic device according to various embodiments.
In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar elements.

1 is a block diagram of an electronic device 101 within a network environment 100, according to various embodiments. Referring to FIG. 1 , in a network environment 100, an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or through a second network 199. It is possible to communicate with at least one of the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes 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), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or the antenna module 197 may be included. In some embodiments, in the electronic device 101, at least one of these components (eg, the connection terminal 178) may be omitted or one or more other components may be added. In some embodiments, some of these components (eg, sensor module 176, camera module 180, or antenna module 197) are integrated into a single component (eg, display module 160). It can be.

The processor 120, for example, executes software (eg, the program 140) to cause at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, the processor 120 transfers instructions or data received from other components (e.g., sensor module 176 or communication module 190) to volatile memory 132. , processing commands or data stored in the volatile memory 132 , and storing resultant data in the non-volatile memory 134 . According to one embodiment, the processor 120 may include a main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit ( NPU: neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor). For example, when the electronic device 101 includes the main processor 121 and the auxiliary processor 123, the auxiliary processor 123 may use less power than the main processor 121 or be set to be specialized for a designated function. can The secondary processor 123 may be implemented separately from or as part of the main processor 121 .

The secondary processor 123 may, for example, take the place of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, running an application). ) state, together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to one embodiment, the auxiliary processor 123 (eg, image signal processor or communication processor) may be implemented as part of other functionally related components (eg, camera module 180 or communication module 190). there is. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. AI models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself where the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning or reinforcement learning, but in the above example Not limited. The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the foregoing, but is not limited to the foregoing examples. The artificial intelligence model may include, in addition or alternatively, software structures in addition to hardware structures.

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

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 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120) of the electronic device 101 from the outside of the electronic device 101 (eg, a user). The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. A receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 may visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor set to detect a touch or a pressure sensor set to measure the intensity of force generated by the touch.

The audio module 170 may convert sound into an electrical signal or vice versa. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device connected directly or wirelessly to the electronic device 101 (eg: Sound may be output through the electronic device 102 (eg, a speaker or a headphone).

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device 101 to an external electronic device (eg, the electronic device 102). According to 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.

The connection terminal 178 may include a connector through which the electronic device 101 may be physically connected to an external electronic device (eg, the 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 (eg, a headphone connector).

The haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or motion) or electrical stimuli that a user may perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

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

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). Establishment and communication through the established communication channel may be supported. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, 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 (eg, : a local area network (LAN) communication module or a power line communication module). Among these communication modules, a corresponding communication module is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunications network such as a computer network (eg, a LAN or a WAN). These various types of communication modules may be integrated as one component (eg, a single chip) or implemented as a plurality of separate components (eg, multiple chips). The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 may be identified or authenticated.

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

The antenna module 197 may transmit or receive signals or power to the outside (eg, an external electronic device). According to 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 (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, 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 is selected from the plurality of antennas by the communication module 190, for example. can be chosen A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module 197 in addition to the radiator.

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module includes a printed circuit board, an RFIC disposed on or adjacent to a first surface (eg, a lower surface) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, array antennas) disposed on or adjacent to a second surface (eg, a top surface or a side surface) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or part of operations executed in the electronic device 101 may be executed in one or more external electronic devices among the external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead of executing the function or service by itself. Alternatively or additionally, one or more external electronic devices may be requested to perform the function or at least part of the service. One or more external electronic devices receiving the request may execute at least a part of the requested function or service or an additional function or service related to the request, and deliver the execution result to the electronic device 101 . The electronic device 101 may provide the result as at least part of a response to the request as it is or additionally processed. To this end, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an internet of things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199 . The electronic device 101 may be applied to intelligent services (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

2 is a block diagram of an electronic device according to various embodiments.

According to an embodiment, the electronic device 201 (eg, the electronic device 101 of FIG. 1) includes a connector 210 (eg, a connection terminal 178 of FIG. 1), an identification circuit 220, a switching circuit ( 230), memory 240 (eg, memory 130 of FIG. 1), processor 250 (eg, processor 120 of FIG. 1), and battery 260 (eg, battery 189 of FIG. 1) can include

According to an embodiment, the electronic device 201 recognizes an electrically connected external electronic device (eg, the electronic device 102 of FIG. 1 ), and generates a power voltage based on the recognized characteristics of the external electronic device. You can decide whether to output to the device or not.

According to an embodiment, the connector 210 may electrically and/or physically connect the electronic device 201 and an external electronic device. In one embodiment, the connector 210 may include at least one signal terminal (or pin). In one embodiment, the electronic device 201 and an external electronic device may be electrically connected through a connector 210 . The electronic device 201 transmits an electrical signal (eg, voltage or current) to an external electronic device through at least one of a plurality of signal terminals (or pins) of the connector 210 and/or an external electronic device. An electrical signal can be received from In one embodiment, the electronic device 201 may be connected to an external electronic device through the connector 210 to transmit/receive data or power.

According to an embodiment, the connector 210 may connect various types of external electronic devices conforming to universal serial bus (USB) standards to the electronic device 201 . For example, the external electronic device is a USB-C type electronic device or a USB-A type main device (eg, a device including a high voltage generating circuit) and an OTG that converts a USB-A type to a USB-C type. (on the go) can include gender. For example, the connector 210 may correspond to a USB-C type connector (or a receptacle connector). According to an embodiment, the connector 210 may be connected to an external electronic device to perform data communication and/or transmit/receive power between the electronic device 201 and the external electronic device.

In one embodiment, the connector 210 may include at least one signal terminal (or pin). For example, at least one signal terminal may include a power supply terminal (eg, a VBUS terminal) for supplying and/or receiving power, an identification terminal (eg, a CC terminal) for identifying an external electronic device, and a power terminal for transmitting and receiving data. It may include a first data terminal (eg, D+ terminal), a second data terminal (eg, D- terminal), and a ground terminal (eg, GND terminal).

According to one embodiment, the identification circuit 220 may be connected to the CC terminal of the connector 210 . For example, the identification circuit 220 may include a configuration channel IC (CCIC). According to an embodiment, the identification circuit 220 may transfer the sensed resistance value through the CC terminal to the processor 250 under the control of the processor 250 . In various examples, the processor 250 may recognize a resistance value through the CC terminal using the identification circuit 220 .

According to one embodiment, the switching circuit 230 may be connected to the data terminal of the connector 210 . For example, the switching circuit 230 may be connected to a first data terminal and a second data terminal among a plurality of signal terminals of the connector 210 . According to one embodiment, the switching circuit 230 may include a multiplexer IC (MUX IC).

According to an embodiment, the switching circuit 230 may discharge electrical energy in the data terminal by connecting the data terminal to a discharge circuit according to the control of the processor 250 . According to an embodiment, the switching circuit 230 may connect a discharging circuit to the data terminal to discharge energy in a capacitor electrically connected to the data terminal according to the control of the processor 250 . For example, energy in a capacitor electrically connected to a data terminal may correspond to a capacitor component (eg, charge) present in the data terminal. According to an embodiment, the switching circuit 230 may electrically connect the data terminal to a circuit including a pull-down resistor (or at least one resistor) according to the control of the processor 250 . When the data terminal is connected to the circuit including the pull-down resistor, at least a portion of charges (or capacitor components) present in the data terminal may be discharged (or removed). According to an embodiment, the switching circuit 230 may electrically apply (or supply) pull-up power to the data terminal according to the control of the processor 250 . For example, the pull-up power may be power based on the battery 260 applied to check the voltage level of the data terminal (eg, the first data terminal D+ and/or the second data terminal D-). . Hereinafter, connecting (or electrically connecting) may mean electrically connecting signal terminals so that an electrical signal is transmitted and received (eg, current flows or voltage is applied) between the connected signal terminals. .

According to one embodiment, the memory 240 may store various data (or information). According to one embodiment, the memory 240 may store at least one program, application, data, or instructions executed by the processor 250 . According to one embodiment, the memory 240 may include at least a portion of the memory 130 shown in FIG. 1 . According to an embodiment, the memory 240 may store information or instructions for performing at least a part of an operation of the electronic device 201 described below. According to one embodiment, the memory 240 may store instructions related to a plurality of applications executed by the processor 250 . According to an embodiment, the memory 240 may store information necessary for the operation of the electronic device 201 .

According to an embodiment, the battery 260 may be in a charged state with power to be supplied to at least one component of the electronic device 201 or an external electronic device. According to an embodiment, components of the electronic device 201 may perform various operations using power charged in the battery 260 . According to an embodiment, at least a portion of the power charged in the battery 260 may be used as an operating voltage for components of the electronic device 201 to perform various operations. For example, pull-up power based on power charged in the battery 260 may be applied to the first data terminal and the second data terminal for transmitting and receiving data. According to an embodiment, at least a part of the power charged in the battery 260 may be provided to an external electronic device. For example, a power supply voltage based on power charged in the battery 260 may be provided to an external electronic device.

According to an embodiment, the processor 250 may be operatively connected to other components of the electronic device 201 and control various operations of the electronic device 201 . For example, the processor 250 may include an application processor of the electronic device 201 . The processor 250 may perform various operations of the electronic device 201 by executing one or more instructions stored in the memory 240 . Hereinafter, operations described as being performed by the electronic device 201 may be referred to as being performed by the processor 250 .

According to an embodiment, when the external electronic device is electrically connected to the electronic device 201, the processor 250 detects (or recognizes) characteristics of the external electronic device and supplies the external electronic device with a power voltage (eg, Vbus voltage) or not. In one embodiment, the processor 250 may determine whether to output a power supply voltage to an external electronic device connected to the electronic device 201 .

According to an embodiment, the processor 250 may recognize the external electronic device as an abnormal external electronic device when it is determined that the first data terminal and the second data terminal are in a short state. For example, the short state may mean a state in which a voltage level of a first signal terminal (eg, a first data terminal) and a voltage level of a second signal terminal (eg, a second data terminal) are the same. For example, the short state may correspond to a state in which a difference between a voltage level of a first signal terminal (eg, a first data terminal) and a voltage level of a second signal terminal (eg, a second data terminal) is less than a threshold value. In one embodiment, when recognizing that the external electronic device is an abnormal external electronic device, the processor 250 may not provide a power supply voltage to the external electronic device. In one embodiment, an abnormal external electronic device may correspond to an electronic device in which the electronic device 201 (or the processor 250) does not provide a power supply voltage (eg, Vbus voltage). For example, the abnormal external electronic device generates a high voltage using the power supply voltage received from the electronic device 201 and applies the generated high voltage to the electronic device 201 to electrically can be damaged by For example, an abnormal external electronic device may mean a USB killer, but is not limited thereto.

According to another embodiment, the processor 250 may recognize the external electronic device as a normal external electronic device when it is determined that the first data terminal and the second data terminal are not short-circuited. For example, the non-short state may mean a state in which the voltage level of the first signal terminal (eg, the first data terminal) and the voltage level of the second signal terminal (eg, the second data terminal) are not the same. there is. For example, the non-short state may correspond to a state in which a difference between a voltage level of a first signal terminal (eg, a first data terminal) and a voltage level of a second signal terminal (eg, a second data terminal) is equal to or greater than a threshold value. can In one embodiment, when recognizing that the external electronic device is a normal external electronic device, the processor 250 may provide a power supply voltage to the external electronic device. In one embodiment, a normal external electronic device may correspond to an electronic device in which the electronic device 201 (or the processor 250) can provide a power voltage (eg, Vbus voltage). For example, a normal external electronic device may perform various operations using the power voltage received from the electronic device 201 without burning the electronic device 201 .

According to an embodiment, the processor 250 determines whether the external electronic device connected to the electronic device 201 is a normal external electronic device, and connects a first data terminal and a first data terminal among a plurality of signal terminals of the connector 210. It may be checked whether the second data terminals are in a short state with each other.

When electrical connection and disconnection between the electronic device 201 and an external electronic device are repeated within a short period of time, at least one signal terminal among a plurality of signal terminals of the connector 210 (eg, a first data terminal and/or a second data terminal) 2 data terminal), the voltage level of at least one signal terminal may be misrecognized due to the remaining capacitor component (eg, residual charge). According to one embodiment, the processor 250 electrically connects at least one signal terminal among a plurality of signal terminals of the connector 210 to a discharge circuit to discharge electrical energy in the at least one signal terminal. can According to an embodiment, the processor 250 may electrically connect the at least one signal terminal to the discharge circuit before checking the voltage level of the at least one signal terminal. According to an embodiment, the processor 250 electrically connects the first data terminal and/or the second data terminal to a discharge circuit before determining whether the external electronic device connected to the electronic device 201 is a normal external electronic device. can connect According to an embodiment, the processor 250 may accurately recognize whether the external electronic device is a normal external electronic device through the first data terminal and the second data terminal from which the capacitor component is removed through the discharge circuit. For example, the processor 250 may accurately determine whether or not to provide the power supply voltage to the external electronic device by checking the short state of the first data terminal and the second data terminal from which the capacitor component is removed through the discharge circuit.

According to an embodiment, the processor 250 may identify (or recognize) that an external electronic device is electrically connected to the electronic device 201 through the identification circuit 220 . According to an embodiment, when the external electronic device is connected to the electronic device 201 through the connector 210, the processor 250 may recognize characteristics of the external electronic device. According to an embodiment, the processor 250 may detect (or recognize) a resistance value indicating characteristics of an external electronic device through the identification circuit 220 connected to the CC terminal of the connector 210 .

According to an embodiment, when an external electronic device is connected to the electronic device 201, the processor 250 may detect a resistance value of the CC terminal through the identification circuit 220. According to an embodiment, when the processor 250 detects a first resistance value (eg, a pull-down resistance value (5.1 kohm)) of a CC terminal electrically connected to the identification circuit 220, the electronic device 201 An external electronic device connected to may be recognized as a device receiving power from the electronic device 201 . For example, a device receiving power may mean a sink device or an upstream facing port (UFP) device, but the interpretation is not limited thereto. According to another embodiment, when the processor 250 detects a second resistance value (eg, a pull-up resistance value (56 kohm)) of the CC terminal electrically connected to the identification circuit 220, the electronic device 201 It may be recognized that the connected external electronic device is a device that provides power to the electronic device 201 . For example, a device providing power may mean a source device or a downstream facing port (DFP) device, but the interpretation is not limited thereto.

According to an embodiment, when the processor 250 recognizes that the external electronic device is a device for receiving power using the identification circuit 220, the processor 250 selects some signal terminals among a plurality of signal terminals of the connector 210. Can be connected to the discharge circuit. For example, the processor 250 may connect a data terminal among a plurality of signal terminals of the connector 210 to a discharge circuit using the switching circuit 230 . For example, the processor 250 may connect the data terminal of the connector 210 to a discharge circuit including a pull-down resistor using the switching circuit 230 to discharge at least a portion of electrical energy remaining in the data terminal. there is. For example, the processor 250 connects the first data terminal and the second data terminal of the connector 210 to a discharge circuit including a pull-down resistor, respectively, using the switching circuit 230 to obtain the first data terminal and the second data terminal. Electrical energy (eg, a capacitor component) remaining in the second data terminal may be discharged.

According to an embodiment, the processor 250 may apply pull-up power to the discharged signal terminal using the switching circuit 230 . For example, the processor 250 may connect the data terminal to an electrical path for the pull-up power using the switching circuit 230 to apply the pull-up power to the data terminal. For example, the processor 250 applies pull-up power to the first data terminal using the switching circuit 230 and checks the voltage level of the second data terminal so that the first data terminal and the second data terminal are connected to each other. It is possible to determine whether or not it is in a short state. The processor 250 applies pull-up power to the second data terminal using the switching circuit 230 and checks the voltage level of the first data terminal to determine whether the first data terminal and the second data terminal are shorted to each other. status can be determined. According to an embodiment, the processor 250 may determine whether to provide (or output) a power supply voltage to an external electronic device according to whether the first data terminal and the second data terminal are short-circuited.

According to an embodiment, when recognizing whether the external electronic device is a normal external electronic device, the processor 250 may use a discharge circuit (eg, a resistance circuit including a pull-down resistor) to improve recognition. . According to an exemplary embodiment, the processor 250 determines whether the external electronic device is a normal external electronic device by checking whether the first data terminal and the second data terminal from which at least a part of the capacitor component is removed through a discharge circuit are in a short state. can accurately recognize (or judge) whether or not

3 is a block diagram of an electronic device and an external electronic device, according to various embodiments.

Referring to FIG. 3 , an electronic device 301 (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2 ) includes a connector 311 (eg, the connection terminal 178 of FIG. 1 or connector 210 of FIG. 2), identification circuit 313 (eg identification circuit 220 of FIG. 2), discharge circuit 314, switching circuit 315 (eg switching circuit 230 of FIG. 2) , charging circuit 317, battery 318 (eg, battery 189 in FIG. 1 or battery 260 in FIG. 2 ) and processor 319 (eg, processor 120 in FIG. 1 , or battery 260 in FIG. 2 ). processor 250). Referring to FIG. 3 , an external electronic device 302 (eg, the electronic device 102 of FIG. 1 ) may include a high voltage generating circuit 321 and an on the go (OTG) gender 323 . According to an embodiment, the external electronic device 302 may be an electronic device conforming to the USB standard. Referring to FIG. 3 , the external electronic device 302 is illustrated as including an OTG gender 323 that converts a USB-A type to a USB-C type, but in various embodiments, the external electronic device 302 has a high voltage It may be a USB-C type electronic device including the generating circuit 321 .

According to one embodiment, the connector 311 may include at least one signal terminal (or pin). For example, at least one signal terminal may include a power supply terminal (eg, a VBUS terminal) for supplying and/or receiving power, an identification terminal (eg, a CC terminal) for identifying an external electronic device, and a power terminal for transmitting and receiving data. It may include a first data terminal (eg, D+ terminal), a second data terminal (eg, D- terminal), and a ground terminal (eg, GND terminal).

According to one embodiment, the connector 311 may be configured to electrically connect the external electronic device 302 and the electronic device 301 . For example, a ground terminal of the connector 311 may be electrically connected to a ground terminal of the external electronic device 302 . For example, a power terminal of the connector 311 may be electrically connected to a power terminal of the external electronic device 301 . For example, an identification terminal of the connector 311 may be electrically connected to an identification terminal of the external electronic device 302 . For example, the first data terminal of the connector 311 may be electrically connected to the first data terminal of the external electronic device 302 . For example, the second data terminal of the connector 311 may be electrically connected to the second data terminal of the external electronic device 302 .

According to an embodiment, the identification circuit 313 may transmit the resistance value sensed through the identification terminal to the processor 319 based on the control of the processor 319 .

According to an exemplary embodiment, the switching circuit 315 connects a data terminal (eg, a first data terminal and/or a second data terminal) to a discharge circuit or supplies a pull-up power source based on control of the processor 319. A data terminal can be connected to an electrical path for application.

According to an embodiment, the charging circuit 317 may output the power voltage to the external electronic device 302 or may not output the power voltage to the external electronic device 302 based on the control of the processor 319. there is. For example, the charging circuit 317 boosts the voltage level of the battery 318 based on a designated command (eg, boost) of the processor 319, and converts the boosted voltage level (eg, 5V) to The output voltage having may be output to the external electronic device 302 .

According to an embodiment, the battery 318 may store (or charge) power to be supplied to at least one component of the electronic device 301 or the external electronic device 302 . For example, a power supply voltage based on power charged in the battery 318 may be provided to the external electronic device 302 under the control of the processor 319 . For example, under the control of the processor 319 , pull-up power based on power charged in the battery 318 may be applied to the first data terminal and the second data terminal for transmitting and receiving data.

According to an embodiment, the processor 319 identifies (or recognizes) the external electronic device 302 connected to the electronic device 301 through the identification circuit 313 (eg, configuration channel IC (CCIC)). can For example, the identification circuit 313 may transfer a resistance value sensed through an identification terminal to the processor 319 . According to an embodiment, the processor 319 detects (or recognizes) a resistance value representing the characteristics of the external electronic device 302 through an identification circuit 313 electrically connected to an identification terminal of the connector 311. can According to an embodiment, when the processor 319 detects a first resistance value (eg, a pull-down resistance value (5.1 kohm)) through the identification circuit 313, the external electronic device (connected to the electronic device 301) 302) may be recognized as a device receiving power from the electronic device 301. According to another embodiment, when the processor 319 detects the second resistance value (eg, a pull-up resistance value (56 kohm)) of the identification terminal through the identification circuit 313, the external electronic device connected to the electronic device 301 It may be recognized that the device 302 is a device that provides power to the electronic device 301 . For example, the processor 319 may detect the first resistance value through the identification circuit 313 and recognize that the external electronic device 302 is a device receiving power from the electronic device 301 . In an embodiment, the processor 319 may determine whether to output the power supply voltage to the external electronic device 302 based on the voltage level of the signal terminal (eg, the first data terminal and/or the second data terminal). there is.

According to an embodiment, the processor 319, based on sensing the first resistance value through the identification circuit 313, uses the switching circuit 315 to discharge the first data terminal and the second data terminal. (314) can be connected. For example, the discharge circuit 314 may be an electrical circuit including a pull-down resistor. According to one embodiment, the processor 319 connects the first data terminal and the second data terminal to the discharge circuit 314 to obtain a capacitor component (eg, residual charge) remaining on the first data terminal and the second data terminal. can be at least partially discharged. According to an embodiment, the processor 319 may connect a discharge circuit to the data terminal to discharge energy in a capacitor electrically connected to at least one of the first data terminal and the second data terminal. For example, energy in a capacitor electrically connected to at least one of the first data terminal and the second data terminal is a capacitor component (eg, charge) present in at least one of the first data terminal and the second data terminal. can respond to For example, the processor 319 may connect the first data terminal and the second data terminal to the discharge circuit 314 to remove at least some of the residual charge. For example, when the first data terminal and the second data terminal are connected to the discharge circuit 314, the voltage level of the first data terminal and the voltage level of the second data terminal may respectively correspond to the ground voltage.

According to an embodiment, the processor 319 connects the first data terminal and the second data terminal to the discharge circuit 314 using the switching circuit 315, and then uses the switching circuit 315 to generate the first data terminal. Pull-up power may be applied to the data terminal and the second data terminal. Thereafter, the processor 319 may determine whether to output the power supply voltage to the external electronic device 302 by checking the voltage levels of the first data terminal and the second data terminal. In various embodiments, the order in which pull-up power is applied to each of the first data terminal and the second data terminal is not limited. Hereinafter, the processor 319 recognizes the voltage level of the second data terminal after applying the pull-up power to the first data terminal, applies the pull-up power to the second data terminal, and then recognizes the voltage level of the first data terminal. Recognizing is described as an example. In various examples, the processor 319 recognizes the voltage level of the first data terminal after applying the pull-up power to the second data terminal, and then applies the pull-up power to the first data terminal and then the voltage of the second data terminal. level can be recognized.

In an embodiment, the processor 319 may apply pull-up power to the first data terminal and check the voltage level of the second data terminal by using an analog to digital converter (ADC) or a comparator. In various embodiments, the processor 319 may wait for a specified time before checking the voltage level of the second data terminal after applying the pull-up power to the first data terminal. For example, the designated time may mean a delay time. Immediately after applying the pull-up power to the first data terminal, although the first data terminal and the second data terminal are not in a short-circuit state, they are in a short-circuit state due to internal resistance between the first data terminal and the second data terminal. may be mistakenly perceived as being According to an embodiment, the processor 319 may wait for a specified period of time before checking the voltage level of the second data terminal in order to reduce the effect of internal resistance between the first data terminal and the second data terminal. According to an embodiment, the processor 319 may accurately recognize whether the first data terminal and the second data terminal are in a short state by waiting for a specified time after applying the pull-up power to the first data terminal.

In one embodiment, when the voltage level of the second data terminal is checked and the first data terminal and the second data terminal are not shorted to each other, the processor 319 recognizes the external electronic device 302 as a normal external electronic device. can do. The processor 319 may output a power voltage to the external electronic device 302 through the charging circuit 317 based on recognizing that the external electronic device 302 is a normal external electronic device. For example, the processor 319, when the first data terminal and the second data terminal are not shorted to each other, the battery of the electronic device 301 (eg, the battery 189 of FIG. 1) through the charging circuit 317 ) may be output to the external electronic device 302 . For example, the processor 319 may control the charging circuit 317 to output power voltage to the external electronic device 302 .

In an exemplary embodiment, when the voltage level of the second data terminal is checked and the first data terminal and the second data terminal are short-circuited to each other, the processor 319 may apply pull-up power to the second data terminal. According to an embodiment, the processor 319 may check the voltage level of the first data terminal using an analog to digital converter (ADC) or a comparator. In various embodiments, the processor 319 may wait for a specified time before checking the voltage level of the first data terminal after applying the pull-up power to the second data terminal. According to an embodiment, the processor 319 may wait for a specified period of time before checking the voltage level of the first data terminal in order to reduce the effect of internal resistance between the first data terminal and the second data terminal. According to an embodiment, the processor 319 may accurately recognize whether the first data terminal and the second data terminal are short-circuited by waiting for a specified time after applying the pull-up power to the second data terminal. In one embodiment, when the voltage level of the first data terminal is checked and the first data terminal and the second data terminal are not shorted to each other, the processor 319 recognizes the external electronic device 302 as a normal external electronic device. can do. The processor 319 may output a power voltage to the external electronic device 302 through the charging circuit 317 based on recognizing that the external electronic device 302 is a normal external electronic device. In another embodiment, as a result of checking the voltage level of the first data terminal, when the first data terminal and the second data terminal are shorted to each other, the processor 319 recognizes the external electronic device 302 as an abnormal external electronic device. can do. The processor 319 may not output a power voltage to the external electronic device 302 based on recognizing that the external electronic device 302 is an abnormal external electronic device. For example, the processor 319 may control the charging circuit 317 not to output power voltage to the external electronic device 302 . For example, the processor 319 may limit output of the power supply voltage to the external electronic device 302 .

As described above, the processor 319 discharges electrical energy of the first data terminal and the second data terminal, applies pull-up power to the first data terminal, and checks the voltage level of the second data terminal. After applying pull-up power to the first check operation and the second data terminal, a second check operation of checking the voltage level of the first data terminal may be performed. In one embodiment, the processor 319 recognizes that the first data terminal and the second data terminal are shorted to each other as a result of performing the first check operation, and as a result of performing the second check operation, the first data terminal It can be recognized that the terminal and the second data terminal are in a short state with each other. In this case, the processor 319 may not output a power supply voltage to the external electronic device 302 . In another example, the processor 319 may recognize that the first data terminal and the second data terminal are not in a short-circuit state based on any one of the first check operation and the second check operation. . For example, as a result of performing the first check operation, the processor 319 may recognize that the first data terminal and the second data terminal are not shorted to each other. Alternatively, the processor 319 recognizes that the first data terminal and the second data terminal are short-circuited as a result of performing the first check operation, and as a result of performing the second check operation, the first data terminal and the second data terminal It can be recognized that the terminals are not shorted to each other. In this case, the power supply voltage may be output to the external electronic device 302 .

In various embodiments, the external electronic device 302 may be a normal external electronic device having designated characteristics. For example, in the external electronic device 302, the first data terminal and the second data terminal are shorted to each other until power is applied to the first data terminal and the second data terminal, and the first data terminal and the second data terminal are in a short state. After power is applied to the 2 data terminals, the first data terminal and the second data terminal may be normal external electronic devices having specified characteristics and not shorted to each other. After the external electronic device 302 having the specified characteristics is connected to the electronic device 301, the processor 319 discharges electrical energy in the first data terminal and the second data terminal, and discharges electrical energy in the second data terminal. It is recognized that the first data terminal and the second data terminal are shorted to each other through a first check operation of checking the voltage level of the first data terminal through a second check operation of checking the voltage level of the first data terminal. and that the second data terminals are in a short state with each other. In this case, the processor 319 may recognize that the external electronic device 302 having the specified characteristic corresponds to an abnormal external electronic device. According to an exemplary embodiment, the processor 319 recognizes that the first data terminal and the second data terminal are short-circuited to each other through the first check operation and the second check operation, and then applies a pull-up power to the first data terminal. A third checking operation of reapplying the voltage level of the second data terminal and a fourth checking operation of checking the voltage level of the first data terminal by reapplying the pull-up power to the second data terminal may be further performed. According to an embodiment, when power (eg, pull-up power) is applied to the first data terminal and the second data terminal of the external electronic device 302 through the first check operation and the second check operation, the external electronic device 302 The first data terminal and the second data terminal of may correspond to a non-short state. Thereafter, the processor 319 recognizes that the first data terminal and the second data terminal are not shorted to each other through a result of performing at least one of the third check operation and the fourth check operation, and the external electronic device 302 ) corresponds to a normal external electronic device.

In various embodiments, after the electronic device 301 recognizes the external electronic device 302 as corresponding to the abnormal external electronic device, the electronic device 301 may be rebooted for various reasons. According to an embodiment, the electronic device 301 may store state information about the external electronic device 302 recognized before the electronic device 301 is restarted. For example, the state information of the external electronic device 302 may include first information indicating whether the external electronic device 302 is a device receiving power or a device providing power. For example, the state information (eg, first information) of the external electronic device 302 is a first resistance value detected by the processor 319 through the identification circuit 313 (eg, a pull-down resistance value (5.1 kohm)). ) or a second resistor value (eg, a pull-up resistor value (56 kohm)). For example, the state information of the external electronic device 302 may include second information indicating whether the first data terminal and the second data terminal of the external electronic device 302 are in a short state with each other. For example, the state information (eg, second information) of the external electronic device 302 is recognized based on the results of performing the first confirmation operation and the second confirmation operation or the first to fourth confirmation operations. It may indicate whether the external electronic device 302 is a normal external electronic device.

According to an embodiment, the processor 319 (or the electronic device 301) does not output a power supply voltage to the external electronic device 302 after being restarted, and prioritizes state information related to the external electronic device 302. You can check. In one embodiment, when the state information of the external electronic device 302 includes the first resistance value and information indicating that the external electronic device 302 is an abnormal external electronic device, the processor 319 determines the external electronic device 302 may be recognized as corresponding to an abnormal external electronic device and may not output power voltage to the external electronic device 302 . Through the various embodiments described above, the processor 319 may accurately recognize whether or not to output the power voltage to the external electronic device 302 .

4 illustratively illustrates a high voltage generating circuit included in an external electronic device according to various embodiments.

Referring to FIG. 4 , a high voltage generating circuit 410 (eg, the high voltage generating circuit 321 of FIG. 3 ) included in an abnormal external electronic device (eg, the external electronic device 302 of FIG. 3 ) is illustrated as an example. do. For example, in an abnormal external electronic device, a first signal terminal (eg, a first data terminal (D+)) and a second signal terminal (eg, a second data terminal (D-)) are in a short state with each other, and electrical A high voltage (eg, about approx. 200V) can be generated. For example, an abnormal external electronic device generates a high voltage (eg, about 200V) using a flyback converter when a low voltage (eg, 5V) power supply voltage (Vbus) is applied from the electronic device, and generates a pulse A high voltage generated using a pulse generator may be applied to the first signal terminal and the second signal terminal. In this case, the abnormal external electronic device may electrically burn internal components of the electronic device by applying the generated high voltage to the connected electronic device through the first signal terminal and the second signal terminal. According to the above-described embodiment, the electronic device can recognize with improved recognition whether the first signal terminal and the second signal terminal electrically connected to the abnormal external electronic device are electrically short-circuited. An electronic device according to an embodiment may not output the power voltage Vbus to an external electronic device recognized as an abnormal external electronic device.

An electronic device according to an embodiment of the present disclosure (eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 , or the electronic device 301 of FIG. 3 ) includes at least one signal terminal. A connector (e.g. connection terminal 178 in FIG. 1, connector 210 in FIG. 2 or connector 311 in FIG. 3), an identification circuit electrically connected to the connector (e.g. identification circuit 220 in FIG. 2 or Identification circuit 313 of FIG. 3), a switching circuit electrically connected to the connector (e.g., switching circuit 230 of FIG. 2 or switching circuit 315 of FIG. 3), a battery (e.g., battery 189 of FIG. 1) ), the battery 260 of FIG. 2 or the battery 318 of FIG. 3), a memory (eg, the memory 130 of FIG. 1 or the memory 240 of FIG. 2) and the identification circuit, the switching circuit, the battery and a processor operatively coupled with the memory (eg, the processor 120 of FIG. 1 , the processor 250 of FIG. 2 , or the processor 319 of FIG. 3 ). According to an embodiment, when the memory is executed, the processor, using the identification circuit, recognizes that an external electronic device is electrically connected to the electronic device through the connector, and uses the switching circuit to: Discharging energy in a capacitor electrically connected to at least one of a first signal terminal and a second signal terminal among the at least one signal terminal, and a voltage level difference between the first signal terminal and the second signal terminal Based on this, instructions for determining whether to output a power voltage based on the battery through the connector to the external electronic device may be stored.

According to an embodiment, the instructions may cause the processor to recognize a first resistance value or a second resistance value through a third signal terminal among the at least one signal terminal, using the identification circuit. .

According to an embodiment, when the processor recognizes the first resistance value using the identification circuit, the instructions recognize that the external electronic device corresponds to a sink receiving power from the outside, and , When recognizing the second resistance value using the identification circuit, the external electronic device may be recognized as corresponding to a device (source) providing power to the outside.

According to an embodiment, the electronic device further includes a discharge circuit (eg, the discharge circuit 314 of FIG. 3 ) including at least one resistor, and the instructions include the processor, the switching circuit By using, it is possible to connect the first signal terminal and the second signal terminal to the discharge circuit.

According to one embodiment, the instructions include, after the processor discharges at least one of the first signal terminal and the second signal terminal, and then uses the switching circuit to perform a battery-based pull-up to the discharged signal terminal. power can be applied.

According to one embodiment, the instructions may cause the processor to wait for a specified time after applying the pull-up power to the discharged signal terminal.

According to an embodiment, the instructions may determine a voltage level of the first signal terminal and a voltage level of the second signal terminal after the processor discharges at least one of the first signal terminal and the second signal terminal. and when the difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal is less than a threshold value, it may be determined not to output the power supply voltage to the external electronic device.

According to an embodiment, the instructions include, when the processor outputs the power supply voltage to the external electronic device when a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal is greater than or equal to the threshold value. can decide what to do.

According to an embodiment, the electronic device further includes a charging circuit (eg, the charging circuit 317 of FIG. 3 ), and the instructions are based on the processor determining whether to output the power supply voltage, The charging circuit may be controlled.

According to an exemplary embodiment, the instructions may cause the processor to discharge the first signal terminal and the second signal terminal, respectively, by using the switching circuit, apply a pull-up power to the first signal terminal, and Recognizing the voltage level of the second signal terminal, performing a first check operation for recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than a threshold value, and applying the pull-up power to the second signal terminal and perform a second check operation for recognizing the voltage level of the first signal terminal and recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than the threshold value.

According to an embodiment, the instructions may cause the processor to limit output of the power supply voltage to the external electronic device based on the first check operation and the second check operation.

According to one embodiment, the instructions include, the processor, applying the pull-up power to the first signal terminal, recognizing the voltage level of the second signal terminal, the first signal terminal and the second signal terminal A third check operation for recognizing that the voltage level difference is less than the threshold value is performed, the pull-up power is applied to the second signal terminal, and the voltage level of the first signal terminal is recognized to determine the first signal terminal and the voltage level of the first signal terminal. Performing a fourth check operation for recognizing that the voltage level difference of the second signal terminal is less than the threshold value, and limiting output of the power supply voltage to the external device based on the third check operation and the fourth check operation can make it

According to an embodiment, the memory stores state information related to the external electronic device, and the instructions cause the processor to reboot while the external electronic device is electrically connected to the electronic device. Prior to outputting the power voltage to the external electronic device, state information related to the external electronic device may be checked, and output of the power voltage to the external electronic device may be limited based on the checked state information.

According to an embodiment, the first signal terminal and the second signal terminal may be configured to transmit and receive data between the electronic device and the external electronic device.

5 is a flowchart of a method of operating an electronic device according to various embodiments.

Hereinafter, operations described as being performed by an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2 or the electronic device 301 of FIG. 3) are (eg, the processor of FIG. 1 120 or processor 250 of FIG. 2 or processor 319 of FIG. 3 .

According to an embodiment, in operation 510, the electronic device is connected to an external electronic device (eg, the interface 177 of FIG. 1 , the connector 210 of FIG. 2 , or the connector 311 of FIG. 3 ) through a connector (eg, the interface 177 of FIG. 1 ). The connection of the electronic device 102 of 1 or the external electronic device 302 of FIG. 3 may be recognized. In one embodiment, the electronic device detects (or recognizes) a resistance value representing the characteristics of the external electronic device through an identification circuit (eg, identification circuit 220 of FIG. 2 or identification circuit 313 of FIG. 3 ). can do. In one embodiment, the electronic device may detect a first resistance value (eg, a pull-down resistance value (5.1 kohm)) through an identification circuit. For example, the first resistance value sensed through the identification circuit may indicate that the external electronic device corresponds to a device receiving power from the electronic device.

According to an embodiment, in operation 520, the electronic device may connect the first signal terminal and the second signal terminal to the discharge circuit. In one embodiment, the electronic device uses a switching circuit (eg, the switching circuit 230 of FIG. 2 or the switching circuit 315 of FIG. 3 ) to obtain a first signal terminal (eg, a first data terminal (D+ terminal)). may be connected to a discharge circuit including a pull-down resistor circuit (eg, the discharge circuit 314 of FIG. 3 ). In an embodiment, the electronic device may connect the second signal terminal (eg, the second data terminal (D-terminal)) to the discharge circuit including the pull-down resistor circuit by using the switching circuit. When the first signal terminal and the second signal terminal are connected to a discharge circuit including a pull-down resistor circuit, at least a portion of capacitor components (eg, residual charges) of the first signal terminal and the second signal terminal may be discharged.

According to an embodiment, in operation 530, the electronic device may apply pull-up power to the first signal terminal. In one embodiment, the electronic device may connect the first signal terminal to an electrical path for providing pull-up power by using a switching circuit.

According to an embodiment, in operation 540, the electronic device may check the voltage level of the second signal terminal. In one embodiment, the electronic device may check the voltage level of the second signal terminal using an analog to digital converter (ADC) or a comparator.

According to an embodiment, in operation 550, the electronic device may check whether the first signal terminal and the second signal terminal are short-circuited. In one embodiment, the electronic device generates a first signal terminal and a second signal when the voltage level of the first signal terminal is equal to the voltage level of the second signal terminal or the difference between the voltage levels of the two signal terminals is within a threshold value. It can be recognized that the terminals are shorted to each other. When recognizing that the first signal terminal and the second signal terminal are in a short state (Yes), the electronic device may perform operation 560. In another embodiment, when the voltage level of the first signal terminal and the voltage level of the second signal terminal are not the same (or when the difference between the two voltage levels is greater than a threshold value), the electronic device transmits the first signal terminal and the second signal terminal. It can be recognized that the terminals are not shorted to each other. When it is recognized that the first signal terminal and the second signal terminal are not in a short-circuit state (No), the electronic device may perform operation 551.

According to an embodiment, in operation 551, the electronic device may recognize the external electronic device as a normal external electronic device. In one embodiment, the electronic device may output a power supply voltage to an external electronic device using a charging circuit (eg, the charging circuit 317 of FIG. 3 ).

According to an embodiment, in operation 560, the electronic device may apply pull-up power to the second signal terminal. In one embodiment, the electronic device may connect the second signal terminal to an electrical path for providing pull-up power by using a switching circuit.

According to an embodiment, in operation 570, the electronic device may check the voltage level of the first signal terminal. In one embodiment, the electronic device may check the voltage level of the second signal terminal using an analog to digital converter (ADC) or a comparator.

According to an embodiment, in operation 580, the electronic device may check whether the first signal terminal and the second signal terminal are short-circuited. In one embodiment, when the first signal terminal and the second signal terminal are short-circuited or the difference between the voltage levels of the two signal terminals is within a threshold value (yes), the electronic device may perform operation 590. . In another embodiment, if it is recognized that the first signal terminal and the second signal terminal are not shorted to each other (No), the electronic device may perform operation 551.

According to an embodiment, in operation 590, the electronic device may recognize the external electronic device as an abnormal external electronic device. In one embodiment, the electronic device may not output a power voltage to an external electronic device. For example, the electronic device may control the charging circuit not to output the power supply voltage to the external electronic device.

6 is a flowchart of a method of operating an electronic device according to various embodiments.

Hereinafter, operations described as being performed by an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2 or the electronic device 301 of FIG. 3) are (eg, the processor of FIG. 1 120 or processor 250 of FIG. 2 or processor 319 of FIG. 3 .

According to an embodiment, in operation 610, the electronic device is connected to an external electronic device (eg, the interface 177 of FIG. 1 , the connector 210 of FIG. 2 , or the connector 311 of FIG. 3 ) through a connector (eg, the interface 177 of FIG. 1 ). The connection of the electronic device 102 of 1 or the external electronic device 302 of FIG. 3 may be recognized. In an embodiment, the electronic device may set a first resistance value (eg, a pull-down resistance value (5.1 kohm)) through an identification circuit (eg, identification circuit 220 of FIG. 2 or identification circuit 313 of FIG. 3 ). Based on the detection, it may be recognized that the external electronic device corresponds to a device receiving power from the electronic device.

According to an embodiment, in operation 620, the electronic device may connect the first signal terminal and the second signal terminal to a discharge circuit (eg, the discharge circuit 314 of FIG. 3). In one embodiment, the electronic device uses a switching circuit (eg, the switching circuit 230 of FIG. 2 or the switching circuit 315 of FIG. 3 ) to obtain a first signal terminal (eg, a first data terminal (D+ terminal)). can be connected to a discharge circuit comprising a pull-down resistor circuit. When the first signal terminal and the second signal terminal are connected to a discharge circuit including a pull-down resistor circuit, at least a portion of capacitor components of the first signal terminal and the second signal terminal may be discharged.

According to an embodiment, in operation 621, the electronic device may set a count value to 0. In one embodiment, the count value may correspond to the number of times the electronic device checks the voltage levels of the first signal terminal and the second signal terminal. For example, the count value may maintain 0 before the electronic device checks the voltage levels of the first signal terminal and the second signal terminal.

According to an embodiment, in operation 630, the electronic device may apply pull-up power to the first signal terminal. In one embodiment, the electronic device may connect the first signal terminal to an electrical path for providing pull-up power by using a switching circuit.

According to an embodiment, in operation 631, the electronic device may wait for a specified time. According to an embodiment, the electronic device may wait for a specified time before checking the voltage level of the second signal terminal in order to reduce the effect of the internal resistance between the first signal terminal and the second signal terminal.

According to an embodiment, in operation 640, the electronic device may check the voltage level of the second signal terminal. In one embodiment, the electronic device may check the voltage level of the second signal terminal using an analog to digital converter (ADC) or a comparator. In one embodiment, the electronic device may check the voltage level of the second signal terminal in operation 640 after waiting for a specified time in operation 631 .

According to an embodiment, in operation 650, the electronic device may check whether the first signal terminal and the second signal terminal are short-circuited. In one embodiment, the electronic device generates a first signal terminal and a second signal when the voltage level of the first signal terminal is the same as that of the second signal terminal or the difference between the voltage levels of the two signal terminals is within a threshold value. It can be recognized that the terminals are shorted to each other. When recognizing that the first signal terminal and the second signal terminal are in a short state (Yes), the electronic device may perform operation 660. In another embodiment, when the voltage level of the first signal terminal and the voltage level of the second signal terminal are not the same or the difference between the voltage levels of the two signal terminals is greater than or equal to a threshold value, the electronic device generates a signal between the first signal terminal and the second signal terminal. It can be recognized that the terminals are not shorted to each other. If it is recognized that the first signal terminal and the second signal terminal are not shorted to each other (No), the electronic device may perform operation 651.

According to an embodiment, in operation 651, the electronic device may recognize the external electronic device as a normal external electronic device. In this case, the electronic device may output a power supply voltage to the external electronic device using a charging circuit (eg, the charging circuit 317 of FIG. 3 ).

According to an embodiment, in operation 660, the electronic device may apply pull-up power to the second signal terminal. In one embodiment, the electronic device may connect the second signal terminal to an electrical path for providing pull-up power by using a switching circuit.

According to one embodiment, in operation 661, the electronic device may wait for a specified time. According to an embodiment, the electronic device may wait for a specified time before checking the voltage level of the first signal terminal in order to reduce the effect of internal resistance between the first signal terminal and the second signal terminal.

According to an embodiment, in operation 670, the electronic device may check the voltage level of the first signal terminal. In one embodiment, the electronic device may check the voltage level of the second signal terminal using an analog to digital converter (ADC) or a comparator.

According to an embodiment, in operation 680, the electronic device may check whether the first signal terminal and the second signal terminal are short-circuited. In one embodiment, if it is recognized that the first signal terminal and the second signal terminal are shorted to each other (yes), the electronic device may perform operation 681. In another embodiment, when it is recognized that the first signal terminal and the second signal terminal are not shorted to each other (No), the electronic device may perform operation 651.

According to an embodiment, in operation 681, the electronic device may check whether the count value is 1. In one embodiment, the count value may represent the number of times the electronic device checks the voltage levels of the first signal terminal and the second signal terminal.

In one embodiment, when the count value is not 1 (No), the electronic device may perform operation 683. For example, when the count value corresponds to 0, it may mean that the electronic device checks the voltage level of the first signal terminal and the voltage level of the second signal terminal once. For example, when the count value is 0, it may mean that pull-up power is applied to the first signal terminal and the second signal terminal once each. In another embodiment, when the count value corresponds to 1, it may mean that the electronic device has already checked the voltage level of the first signal terminal and the voltage level of the second signal terminal twice. In one embodiment, when the count value is 1 (Yes), the electronic device may perform operation 690. For example, when the count value is 1, it may mean that pull-up power is applied to the first signal terminal and the second signal terminal twice, respectively. According to various embodiments, the number of times of checking the voltage level of the first signal terminal and the voltage level of the second signal terminal may be two or more.

According to an embodiment, in operation 683, the electronic device may increase the count value by 1. According to an embodiment, the connected external electronic device maintains a short state with each other before power is applied to the specified characteristic (eg, the first signal terminal and the second signal terminal, and power is applied to the first signal terminal and the second signal terminal). characteristics of not shorting each other after being applied). In this case, in order to recognize that the external electronic device is a normal external electronic device, the electronic device reapplies pull-up power to the first signal terminal and the second signal terminal to reconfirm whether the first signal terminal and the second signal terminal are shorted to each other. can do. According to an embodiment, the electronic device may re-perform operation 630 after increasing the count value by 1. In various embodiments, after increasing the count value by 1, the electronic device may wait for a specified time and then perform operation 630 again.

According to an embodiment, in operation 690, the electronic device may recognize the external electronic device as an abnormal external electronic device. In one embodiment, the electronic device may not output a power supply voltage to an external electronic device. For example, the electronic device may control the charging circuit not to output the power supply voltage to the external electronic device.

7 is a flowchart of a method of operating an electronic device according to various embodiments.

Hereinafter, operations described as being performed by an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2 or the electronic device 301 of FIG. 3) are (eg, the processor of FIG. 1 120 or processor 250 of FIG. 2 or processor 319 of FIG. 3 .

According to an embodiment, in operation 710, the electronic device may be rebooted. For example, the electronic device may be an external electronic device (eg, the electronic device of FIG. 1 ) connected through a connector (eg, the interface 177 of FIG. 1 , the connector 210 of FIG. 2 , or the connector 311 of FIG. 3 ). After recognizing 102 or the external electronic device 302 of FIG. 3 as corresponding to the abnormal external electronic device, it may be restarted for various reasons. In an embodiment, after recognizing that the external electronic device corresponds to the abnormal external electronic device, the electronic device may be restarted in a state in which the external electronic device is coupled to the electronic device through a connector. In one embodiment, restarting the electronic device is a system of the electronic device in a state where power supply from the battery (eg, battery 189 in FIG. 1 or battery 260 in FIG. 2 or battery 318 in FIG. 3) continues. This may mean being reset. For example, an internal system of the electronic device may be restarted in a state in which power supply is maintained without interruption.

According to an embodiment, in operation 720, the electronic device may check state information about the external electronic device. According to an embodiment, after being restarted, the electronic device may check state information about the external electronic device pre-stored in a memory (eg, the memory 130 of FIG. 1 or the memory 240 of FIG. 2 ). According to an embodiment, after being restarted, the electronic device may check state information about the external electronic device prior to providing a power voltage to the currently electrically connected (or coupled) external electronic device. According to an embodiment, state information about an external electronic device may include information representing characteristics of an external electronic device recognized and stored in a memory before the electronic device is restarted. For example, the state information on the external electronic device includes first information representing whether the external electronic device is a device receiving power and a first signal terminal (eg, a first data terminal D+) of the external electronic device. It may include second information indicating whether the second signal terminal (eg, the second data terminal D-) is in a short state with each other.

According to an embodiment, in operation 730, the electronic device may recognize that the external electronic device corresponds to the abnormal external electronic device based on the state information. For example, after the electronic device is restarted, the electronic device may recognize first information and second information included in pre-stored state information related to the external electronic device. For example, the first information may indicate that an external electronic device currently electrically coupled corresponds to a device receiving power. For example, the second information may indicate that a first signal terminal and a second signal terminal of an external electronic device that are currently electrically coupled to each other are in a short state.

According to an embodiment, in operation 740, the electronic device may determine not to output a power supply voltage to the external electronic device without initializing state information about the external electronic device.

8 is a flowchart of a method of operating an electronic device according to various embodiments.

Hereinafter, operations described as being performed by an electronic device (eg, the electronic device 101 of FIG. 1 or the electronic device 201 of FIG. 2 or the electronic device 301 of FIG. 3) are (eg, the processor of FIG. 1 120 or processor 250 of FIG. 2 or processor 319 of FIG. 3 .

According to an embodiment, in operation 810, the electronic device uses an identification circuit (eg, the identification circuit 220 of FIG. 2 or the identification circuit 313 of FIG. It may be recognized that the electronic device 102 or the external electronic device 302 of FIG. 3 is connected to the electronic device through a connector (eg, the connection terminal 178 of FIG. 1 or the connector 210 of FIG. 2 ). For example, the electronic device may recognize that the external electronic device is electrically coupled to the electronic device by detecting an electrical signal from the connector. According to an embodiment, the electronic device may identify one of the first resistance value and the second resistance value through an identification terminal of a connector connected to the identification circuit. For example, based on the identification of the first resistance value (eg, a pull-down resistance value (5.1 kohm)) by using the identification circuit, the electronic device determines whether the external electronic device can receive power from the electronic device. response can be recognized.

According to an embodiment, in operation 820, the electronic device uses a switching circuit (eg, the switching circuit 230 of FIG. 2 or the switching circuit 315 of FIG. 3) among at least one signal terminal of the connector. Electrical energy in a capacitor electrically connected to at least one of the first signal terminal and the second signal terminal may be discharged. For example, the first signal terminal may include a first data terminal D+. For example, the second signal terminal may include a second data terminal (D−). For example, the first signal terminal of the connector may be connected to the first signal line (eg, D+ line) of the external electronic device. For example, the second signal terminal of the connector may be connected to a second signal line (eg, D- line) of an external electronic device. According to an embodiment, the electronic device connects the first signal terminal to a discharge circuit including a pull-down resistor (eg, the discharge circuit 314 of FIG. 3) to form a capacitor component of the first signal terminal (eg, the discharge circuit 314 of FIG. 3). residual charge) may be at least partially removed. According to an embodiment, the electronic device may remove at least a portion of the capacitor component of the second signal terminal by connecting the second signal terminal to a discharge circuit including a pull-down resistor.

According to an embodiment, in operation 830, the electronic device may determine whether to output a power supply voltage to the external electronic device through the connector, based on the voltage level difference between the first signal terminal and the second signal terminal. According to an embodiment, when there is no voltage level difference between the first signal terminal and the second signal terminal or is less than a threshold value (eg, a short state), the external electronic device generates an abnormal voltage for applying a high voltage to the electronic device. It may be an external electronic device. In this case, the electronic device may control the charging circuit (eg, the charging circuit 317 of FIG. 3 ) so as not to output the power supply voltage to the external electronic device. According to an embodiment, when the voltage level difference between the first signal terminal and the second signal terminal is greater than a threshold value (eg, a non-short state), the external electronic device does not apply a high voltage to the electronic device as a normal external electronic device. can be In this case, the electronic device may control the charging circuit to output the power voltage to the external electronic device.

An operating method of an electronic device (eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 , or the electronic device 301 of FIG. 3 ) according to an embodiment of the present disclosure includes an external electronic device using a connector (Example: operation of recognizing that it is electrically connected to the electronic device through the connection terminal 178 of FIG. 1, the connector 210 of FIG. 2 or the connector 311 of FIG. 3), at least one of the connectors included in the connector Based on an operation of discharging energy in a capacitor electrically connected to at least one of a first signal terminal and the second signal terminal among signal terminals and a voltage level difference between the first signal terminal and the second signal terminal, The electronic device may include an operation of determining whether to output a power supply voltage through the connector.

According to an embodiment, the recognizing operation may include recognizing a first resistance value or a second resistance value through a third signal terminal among the at least one signal terminal.

According to an embodiment, the discharging operation may include a discharge circuit including at least one resistor in at least one of the first signal terminal and the second signal terminal (eg, the discharge circuit 314 of FIG. 3 ) It may include an operation to connect to.

According to an embodiment, the operation of determining whether to output the power supply voltage may include discharging at least one of the first signal terminal and the second signal terminal, and then determining the voltage level of the first signal terminal and the second signal terminal. Recognizing the voltage level of the terminal, determining not to output the power supply voltage to the external electronic device based on a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal being less than a threshold value and determining to output the power supply voltage to the external electronic device based on a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal being greater than or equal to the threshold value. can

According to an embodiment, the discharging operation includes connecting the first signal terminal and the second signal terminal to a discharging circuit, respectively, and the operation of determining whether to output the power supply voltage includes An operation of applying pull-up power to a first signal terminal, a first confirmation operation of recognizing the voltage level of the second signal terminal and recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than a threshold value, the Operation of applying the pull-up power to a second signal terminal and recognizing the voltage level of the first signal terminal to recognize that the voltage level difference between the first signal terminal and the second signal terminal is less than the threshold. Actions may be included.

According to an embodiment, the operation method may further include an operation of limiting output of the power supply voltage to the external electronic device based on the first confirmation operation and the second confirmation operation.

Electronic devices according to various embodiments disclosed in this document may be devices of various types. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. An electronic device according to an embodiment of the present document is not limited to the aforementioned devices.

Various embodiments of this document and terms 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, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "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 "A Each of the phrases such as "at least one of , B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "secondary" may simply be used to distinguish a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited. A (e.g., first) component is said to be "coupled" or "connected" to another (e.g., second) component, with or without the terms "functionally" or "communicatively." When mentioned, it means that the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logical blocks, parts, or circuits. can be used as A module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document provide one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (eg, the program 140) including them. For example, a processor (eg, the processor 120 ) of a device (eg, the electronic device 101 ) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used when data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

According to one embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. A computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store™) or on two user devices (e.g. It can be distributed (eg downloaded or uploaded) online, directly between smart phones. In the case of online distribution, at least part of the computer program product may be temporarily stored or temporarily created in a device-readable storage medium such as a manufacturer's server, an application store server, or a relay server's memory.

According to various embodiments, each component (eg, module or program) of the above-described components may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. . According to various embodiments, the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.

Claims (20)

In electronic devices,
a connector including at least one signal terminal;
an identification circuit electrically connected to the connector;
a switching circuit electrically connected to the connector;
battery;
Memory; and
a processor operatively connected with the identification circuit, the switching circuit, the battery and the memory;
The memory, when executed, the processor,
Using the identification circuit, recognizing that an external electronic device is electrically connected to the electronic device through the connector;
Discharging energy in a capacitor electrically connected to at least one of a first signal terminal and a second signal terminal among the at least one signal terminal by using the switching circuit;
Storing instructions for determining whether to output a power supply voltage based on the battery through the connector to the external electronic device based on a voltage level difference between the first signal terminal and the second signal terminal. , electronic devices. According to claim 1,
The instructions, the processor,
An electronic device configured to recognize a first resistance value or a second resistance value through a third signal terminal among the at least one signal terminal by using the identification circuit. According to claim 2,
The instructions, the processor,
When recognizing the first resistance value using the identification circuit, recognizing that the external electronic device corresponds to a device receiving power from the outside (sink);
When recognizing the second resistance value using the identification circuit, the external electronic device recognizes that the external electronic device corresponds to a source that provides power to the outside. According to claim 1,
A discharge circuit comprising at least one resistor; further comprising;
The instructions, the processor,
and connecting the first signal terminal and the second signal terminal to the discharge circuit using the switching circuit. According to claim 1,
The instructions, the processor,
After at least one of the first signal terminal and the second signal terminal is discharged, a pull-up power based on the battery is applied to the discharged signal terminal using the switching circuit. According to claim 5,
The instructions, the processor,
An electronic device that waits for a specified time after applying the pull-up power to the discharged signal terminal. According to claim 1,
The instructions, the processor,
Recognizing a voltage level of the first signal terminal and a voltage level of the second signal terminal after discharging at least one of the first signal terminal and the second signal terminal;
and determining not to output the power supply voltage to the external electronic device when a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal is less than a threshold value. According to claim 7,
The instructions, the processor,
and determining to output the power supply voltage to the external electronic device when a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal is greater than or equal to the threshold value. According to claim 1,
A charging circuit; further comprising,
The instructions, the processor,
and controlling the charging circuit based on determining whether or not to output the power supply voltage. According to claim 1,
The instructions, the processor,
Discharging the first signal terminal and the second signal terminal respectively using the switching circuit;
Applying pull-up power to the first signal terminal;
Recognizing the voltage level of the second signal terminal and performing a first confirmation operation for recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than a threshold value;
Applying the pull-up power to the second signal terminal;
The electronic device performs a second confirmation operation for recognizing the voltage level of the first signal terminal and recognizing that a voltage level difference between the first signal terminal and the second signal terminal is less than the threshold value. According to claim 10,
The instructions, the processor,
and restricting output of the power supply voltage to the external electronic device based on the first check operation and the second check operation. According to claim 10,
The instructions, the processor,
Applying the pull-up power to the first signal terminal;
Recognizing the voltage level of the second signal terminal and performing a third confirmation operation for recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than the threshold value;
Applying the pull-up power to the second signal terminal;
Performing a fourth check operation for recognizing the voltage level of the first signal terminal and recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than the threshold value;
and restricting the output of the power supply voltage to the external device based on the third check operation and the fourth check operation. According to claim 1,
The memory stores state information related to the external electronic device,
The instructions, the processor,
The external electronic device is rebooted while being electrically connected to the electronic device,
Checking state information related to the external electronic device before outputting the power voltage to the external electronic device;
An electronic device configured to limit output of the power supply voltage to the external electronic device based on the checked state information. According to claim 1,
The first signal terminal and the second signal terminal,
An electronic device configured to transmit and receive data between the electronic device and the external electronic device. In the method of operating an electronic device,
recognizing that an external electronic device is electrically connected to the electronic device through a connector;
discharging energy in a capacitor electrically connected to at least one of a first signal terminal and a second signal terminal among at least one signal terminal included in the connector; and
and determining whether or not to output a power supply voltage to the external electronic device through the connector based on a voltage level difference between the first signal terminal and the second signal terminal. According to claim 15,
The recognized operation,
and recognizing a first resistance value or a second resistance value through a third signal terminal among the at least one signal terminal. According to claim 15,
The discharging operation,
and connecting at least one of the first signal terminal and the second signal terminal to a discharge circuit including at least one resistor. According to claim 15,
The operation of determining whether to output the power supply voltage,
Recognizing a voltage level of the first signal terminal and a voltage level of the second signal terminal after discharging at least one of the first signal terminal and the second signal terminal;
determining not to output the power supply voltage to the external electronic device based on a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal being less than a threshold; and
determining whether to output the power supply voltage to the external electronic device, based on a difference between the voltage level of the first signal terminal and the voltage level of the second signal terminal being greater than or equal to the threshold value; how it works. According to claim 15,
The discharging operation,
Connecting the first signal terminal and the second signal terminal to a discharge circuit, respectively;
The operation of determining whether to output the power supply voltage,
Applying pull-up power to the first signal terminal;
A first check operation of recognizing the voltage level of the second signal terminal and recognizing that the voltage level difference between the first signal terminal and the second signal terminal is less than a threshold value;
applying the pull-up power to the second signal terminal; and
and a second checking operation of recognizing a voltage level of the first signal terminal and recognizing that a voltage level difference between the first signal terminal and the second signal terminal is less than the threshold value. According to claim 19,
The method of operating the electronic device further comprising limiting output of the power supply voltage to the external electronic device based on the first check operation and the second check operation.

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