Electronic device and voltage control method thereof

Abstract

An electronic device according to various embodiments disclosed in the present document may comprise: a battery; a sound output device; and a booster circuit for inputting a voltage to the sound output device on the basis of an output voltage value of the battery, wherein the booster circuit is configured to: compare the output voltage value of the battery with a reference value; input a designated fixed voltage to the sound output device when the output voltage value of the battery is equal to or greater than the reference value; and input a variable voltage lower than the fixed voltage to the sound output device on the basis of the output voltage value when the output voltage value of the battery is less than the reference value. Various other embodiments are possible.

Description

Electronic device and voltage control method thereof

[0001] Various embodiments disclosed in this document relate to electronic devices and methods for controlling the same, for example, methods for controlling an operating voltage of an electronic device.

[0002] As technology advances, electronic devices become smaller and communication technologies advance, and various IoT (Internet of Things) products are being released.

[0003] Small electronic devices with communication capabilities can implement a variety of functions for various services, such as generating alarms to detect location or providing location information.

[0004] Miniaturized electronic devices have limited battery capacity due to miniaturization, and thus, it is necessary to control the driving voltage to implement various functions based on the limited battery capacity.

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

[0006] An electronic device according to various embodiments disclosed in the present document may include a battery, an audio output device, and a booster circuit that inputs a voltage to the audio output device based on an output voltage value of the battery. The booster circuit may be configured to compare the output voltage value of the battery with a reference value, and input a designated fixed voltage to the audio output device if the output voltage value of the battery is equal to or greater than the reference value. The booster circuit may be configured to input a variable voltage lower than the fixed voltage to the audio output device based on the output voltage value if the output voltage value of the battery is less than the reference value.

[0007] A method of an electronic device according to various embodiments disclosed in the present document may include an operation of comparing an output voltage value of a battery with a reference value to control a booster circuit that inputs a voltage to an audio output device based on the output voltage value of the battery. The method may include an operation of inputting a designated fixed voltage to the audio output device if the output voltage value of the battery is equal to or greater than the reference value. The method may include an operation of inputting a variable voltage lower than the fixed voltage to the audio output device based on the output voltage value if the output voltage value of the battery is less than the reference value.

[0008] A non-transitory computer-readable recording medium according to one embodiment may be a computer program recorded thereon for executing the above-described method when an electronic device including a battery is executed.

[0009] The technical tasks, technical features, and effects to be achieved in the present disclosure are not limited to the technical tasks, technical features, and effects mentioned above, and other technical tasks, technical features, and effects not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0010] In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

[0011] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0012] FIG. 2 is an example of a block diagram of an electronic device according to one embodiment.

[0013] FIG. 3 is an example of a block diagram of an electronic device according to one embodiment.

[0014] FIG. 4 is an example of a block diagram of an electronic device according to one embodiment.

[0015] FIG. 5 is a diagram illustrating an example of voltage control of an electronic device according to one embodiment.

[0016] FIG. 6 is a flowchart illustrating a voltage control method of an electronic device according to one embodiment.

[0017] FIG. 7 is a flowchart illustrating a voltage control method of an electronic device according to one embodiment.

[0018] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0019] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0020] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0021] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0022] 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).

[0023] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0024] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0025] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0026] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0027] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0028] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0029] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0030] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0031] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0032] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0033] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0034] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0035] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0036] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0037] According to various embodiments, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0038] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0039] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0040] FIG. 2 is an example of a block diagram of an electronic device (200) (e.g., the electronic device (101) of FIG. 1) according to one embodiment.

[0041] According to one embodiment, the electronic device (200) may be a device that communicates with an external electronic device (e.g., the electronic device (102, 104, or 108) of FIG. 1) or broadcasts a packet containing location information. For example, the electronic device (200) may include a portable electronic device (e.g., a smart tag, a smartphone, or a tablet PC) capable of short-range wireless communication (e.g., Bluetooth or Bluetooth low energy (BLE)) or a wearable device (e.g., a wireless audio device, a smart watch, or a lost child prevention device). For example, the electronic device (200) may include at least some components that are identical or similar to the components of the electronic device (101) illustrated in FIG. 1.

[0042] According to one embodiment, the electronic device (200) may be a device that determines the location of the electronic device (200) based on a communication status with an external electronic device and obtains information for tracking the electronic device (200) through a server (e.g., server (108) of FIG. 1).

[0043] According to one embodiment, the electronic device (200) may include a battery (210) (e.g., battery (189) of FIG. 1), a processor (220) (e.g., processor (120) of FIG. 1), a booster circuit (230), and / or an audio output unit (240) (e.g., audio output module (155) of FIG. 1). The components of the electronic device (200) are not limited thereto, and may additionally include at least some components that are identical or similar to the components of the electronic device (101) illustrated in FIG. 1, depending on the configuration. For example, the electronic device (200) may additionally include a button (e.g., input module (150) of FIG. 1), an acceleration sensor (e.g., sensor module (176) of FIG. 1), and / or an antenna (e.g., antenna module (197) of FIG. 1).

[0044] According to one embodiment, the processor (220) may include a microcontroller and / or communication circuitry, and may be implemented as a processing circuit that controls various components of the electronic device (200), for example.

[0045] According to one embodiment, the processor (220) may include a communication circuit (e.g., a communication module (190) of FIG. 1) and may perform wireless communication with an external electronic device.

[0046] In one embodiment, the processor (220) may transmit and / or receive various data with an external electronic device via wireless communication. For example, the wireless communication may include short-range communication such as wireless local area network (WLAN), Bluetooth, Bluetooth low energy (BLE), ultra-wideband (UWB), or infrared data association (IrDA). Although the processor (220) includes an example of a communication circuit described herein, at least a portion of the communication circuit may be implemented as a separate component from the processor (220). For example, the processor (220) may include Bluetooth and / or BLE communication circuitry, and the ultra-wideband (UWB) communication circuitry may be implemented as a separate component.

[0047] According to one embodiment, the processor (220) may include at least some components of a memory (e.g., memory (130) of FIG. 1). For example, the processor (220) may store various data for controlling various components of the electronic device (200).

[0048] According to one embodiment, the processor (220) may control the overall operation of the electronic device (200) and the signal flow between internal components of the electronic device (200), and perform data processing. For example, the processor (220) may control an operatively connected booster circuit (230). For example, the processor (220) may cause the audio output device (240) to operate through the booster circuit (230) when the electronic device (200) is determined to be lost. For example, the processor (220) may transmit an operation signal (Boost EN) and / or an alarm operation signal (Vibration) of the booster circuit (230) to the booster circuit (230). For example, the processor (220) may check a voltage output from the battery (210) and control the operation of the booster circuit (230) based thereon.

[0049] According to one embodiment, the booster circuit (230) can control the operation of the audio output device (240). For example, the booster circuit (230) can control the voltage output by the booster circuit (230) and input to the audio output device (240) as a driving voltage for operating the audio output device (240) based on the output voltage of the battery (210).

[0050] According to one embodiment, the booster circuit (230) can compare the output voltage value of the battery (210) with a reference voltage value, and if the output voltage value of the battery (210) is equal to or greater than the reference voltage value, the booster circuit (230) can operate in a fixed voltage mode, thereby inputting a specified fixed voltage to the audio output device (240).

[0051] According to one embodiment, the booster circuit (230) can compare the output voltage value of the battery (210) with a reference voltage value, and if the output voltage value of the battery (210) is less than the reference voltage value, it can operate in an automatic voltage mode and input a variable voltage that varies based on the output voltage value of the battery (210) to the audio output device (240). If the output voltage value of the battery (210) is less than the reference voltage value, the variable voltage value input to the audio output device (240) can be lower than a designated fixed voltage value input to the audio output device (240) if the output voltage value of the battery (210) is greater than or equal to the reference voltage value.

[0052] According to one embodiment, the processor (220) and / or the booster circuit (230) may determine a variable voltage value to be input to the audio output device (240) based on the output voltage value of the battery (210) when the output voltage value of the battery (210) is less than a reference voltage value. For example, the booster circuit (230) may compare the output voltage value of the battery (210) with a plurality of reference voltage steps and determine a variable voltage value to be input to the audio output device (240) based on the comparison. For example, the plurality of reference voltage steps may be distinguished into a plurality of steps, such as less than a first reference voltage value and more than a second reference voltage value, less than the second reference voltage value and more than a third reference voltage value, and / or less than the third reference voltage value and more than a fourth reference voltage value. For example, the variable voltage value to be input to the audio output device (240) may be determined based on a step to which the output voltage value of the battery (210) corresponds among the plurality of reference voltage steps.

[0053] According to one embodiment, the booster circuit (230) may include a memory (e.g., a register) that stores a plurality of reference voltage values ​​corresponding to a plurality of steps according to fluctuations in the output voltage value of the battery (210).

[0054] According to one embodiment, when the booster circuit (230) inputs a variable voltage value to the audio output device (240), the processor (220) and / or the booster circuit (230) can check the output voltage of the battery (210) at a specified cycle, check the changed or updated variable voltage value based thereon, and input the variable voltage value to the audio output device (240).

[0055] According to one embodiment, the booster circuit (230) may receive a voltage value input to the audio output device (240) from the processor (210). In this case, the processor (220) may transmit a signal including a fixed voltage value or a variable voltage value calculated based on the output voltage value of the battery (210) to the booster circuit (230).

[0056] According to one embodiment, the booster circuit (230) can store one or more reference voltage values ​​for determining a voltage value input to the audio output device (240) based on an external voltage value from the battery (210).

[0057] According to one embodiment, the sound output device (240) can output a sound such as a notification sound according to the vibration of a certain component, such as a buzzer, bell, or speaker, based on the driving voltage input from the booster circuit (230).

[0058] FIG. 3 is an example of a block diagram of an electronic device (300) (e.g., the electronic device (101 or 200) of FIG. 1 or 2) according to one embodiment. Hereinafter, in the description of the electronic device (300), a detailed description of a configuration and / or function similar to that of the electronic device (101 or 200) of FIG. 1 or 2 may be omitted.

[0059] According to one embodiment, the electronic device (300) may include a battery (310) (e.g., battery (189) of FIG. 1), a processor (320) (e.g., processor (120) of FIG. 1), a booster circuit (330) and / or an audio output unit (340) (e.g., audio output module (155) of FIG. 1). The components of the electronic device (300) are not limited thereto and may additionally include at least some components that are identical or similar to the components of the electronic device (101) illustrated in FIG. 1 depending on the configuration. For example, the electronic device (300) may additionally include a button (e.g., input module (150) of FIG. 1), an acceleration sensor (e.g., sensor module (176) of FIG. 1), and / or an antenna (e.g., antenna module (197) of FIG. 1).

[0060] According to one embodiment, the processor (320) may include a microcontroller and / or communication circuitry, and may be implemented as a processing circuit that controls various components of the electronic device (300), for example.

[0061] According to one embodiment, the processor (320) may include a communication circuit (e.g., a communication module (190) of FIG. 1) and may perform wireless communication with an external electronic device.

[0062] In one embodiment, the processor (320) may transmit and / or receive various data with an external electronic device via wireless communication. For example, the wireless communication may include short-range communication such as wireless local area network (WLAN), Bluetooth, Bluetooth low energy (BLE), Ultra-Wideband (UWB), or Infrared Data Association (IrDA). Although the processor (320) includes an example of a communication circuit described herein, at least a portion of the communication circuit may be implemented as a separate component from the processor (320). For example, the processor (320) may include Bluetooth and / or BLE communication circuitry, and the UWB communication circuitry may be implemented as a separate component.

[0063] According to one embodiment, the processor (320) may include at least some components of a memory (e.g., memory (130) of FIG. 1). For example, the processor (320) may store various data for controlling various components of the electronic device (300).

[0064] According to one embodiment, the processor (320) may control the overall operation of the electronic device (300) and the signal flow between internal components of the electronic device (300), and perform data processing. For example, the processor (320) may control an operatively connected booster circuit (330). For example, the processor (320) may cause the audio output device (340) to operate through the booster circuit (330) when the electronic device (300) is determined to be lost. For example, the processor (320) may transmit an operation signal (Boost EN) and / or an alarm operation signal (Vibration) of the booster circuit (330) to the booster circuit (330). For example, the processor (320) may check a voltage output from the battery (310) and control the operation of the booster circuit (330) based thereon.

[0065] According to one embodiment, the processor (320) may control the operation of the audio output device (340) by controlling the booster circuit (330). For example, the booster circuit (330) may control the voltage output by the booster circuit (330) and input to the audio output device (340) as a driving voltage for operating the audio output device (340) based on the output voltage of the battery (310).

[0066] According to one embodiment, the processor (320) may determine a variable voltage value to be input to the audio output unit (340) based on the output voltage value of the battery (310) when the output voltage value (Ext. REF) of the battery (310) is less than the reference voltage value (int. REF). For example, the booster circuit (330) may compare the output voltage value of the battery (310) with a plurality of reference voltage steps and determine a variable voltage value to be input to the audio output unit (340) based on the comparison. For example, the plurality of reference voltage steps may be distinguished into a plurality of steps such as a first reference voltage value less than or equal to a second reference voltage value, a second reference voltage value less than or equal to a third reference voltage value, and / or a fourth reference voltage value less than or equal to a third reference voltage value. For example, the variable voltage value to be input to the audio output unit (340) may be determined based on a step to which the output voltage value of the battery (310) corresponds among the plurality of reference voltage steps.

[0067] According to one embodiment, the booster circuit (330) may adjust the input voltage of the audio output device (340) to a fixed voltage or a variable voltage under the control of the processor (320).

[0068] According to one embodiment, the processor (320) may transmit a signal value (REF_SEL) including a fixed voltage value or a variable voltage value calculated based on the output voltage value of the battery (310) to the booster circuit (330). For example, the processor (320) may transmit a signal including a fixed voltage value or a variable voltage value to the booster circuit (330) via a serial bus communication line such as I2C (inter-integrated circuit) and / or I3C (improved inter-integrated circuit) communication.

[0069] According to one embodiment, the processor (320) can store a plurality of reference voltage values ​​corresponding to a plurality of steps according to fluctuations in the output voltage value of the battery (310) in the memory.

[0070] According to one embodiment, the booster circuit (330) may include a comparator (331) and an amplifier (333).

[0071] According to one embodiment, the processor (320) may compare the output voltage value of the battery (310) with the reference voltage value and transmit a signal value (REF_SEL) to the booster circuit (330) to indicate whether to operate in a fixed voltage (e.g., internal reference voltage (int.REF)) mode or a variable voltage (e.g., variable based on an external reference voltage (Ext.REF)) mode.

[0072] According to one embodiment, the booster circuit (330) selects an internal reference voltage or an external reference voltage based on a signal received from the processor (320) through a comparator (331), and when the internal reference voltage mode is selected, the amplifier (333) can input a specified fixed voltage to the audio output device (340).

[0073] According to one embodiment, the booster circuit (330) selects an internal reference voltage or an external reference voltage based on a signal received from the processor (320) through a comparator (331), and when the external reference voltage mode is selected, the amplifier (333) can input a variable voltage to the audio output device (340).

[0074] According to one embodiment, the booster circuit (330) may periodically check the variable voltage value received from the processor (320) when the output voltage value of the battery (310) is less than the reference voltage value and operate according to the fluctuating variable voltage value. The booster circuit (330) may transmit the fluctuating variable voltage value to the amplifier (333) through the comparator (331) so that the variable voltage is input to the audio output device (340). When the output voltage value of the battery (310) is less than the reference voltage value, the variable voltage value received from the processor (320) may be lower than a designated fixed voltage value input to the audio output device (340) when the output voltage value of the battery (310) is greater than or equal to the reference voltage value.

[0075] According to one embodiment, when the booster circuit (330) inputs a variable voltage value to the audio output device (340), the processor (320) and the booster circuit (330) can check the battery (310) output voltage at a specified cycle, check the changed or updated variable voltage value based thereon, and input the variable voltage value to the audio output device (340).

[0076] According to one embodiment, the processor (320) may store one or more reference voltage values ​​for determining a voltage value input to the audio output device (340) based on an external voltage value from the battery (310).

[0077] According to one embodiment, the sound output device (340) can output a sound such as a notification sound according to the vibration of a certain component such as a buzzer, bell, or speaker based on the driving voltage input from the booster circuit (330).

[0078] FIG. 4 is an example of a block diagram of an electronic device (400) (e.g., the electronic device (101 or 200) of FIG. 1 or 2) according to one embodiment. Hereinafter, in the description of the electronic device (400), a detailed description of a configuration and / or function similar to that of the electronic device (101 or 200) of FIG. 1 or 2 may be omitted.

[0079] According to one embodiment, the electronic device (400) may include a battery (410) (e.g., battery (189) of FIG. 1), a processor (420) (e.g., processor (120) of FIG. 1), a booster circuit (430) and / or an audio output unit (440) (e.g., audio output module (155) of FIG. 1). The components of the electronic device (400) are not limited thereto and may additionally include at least some components that are identical or similar to the components of the electronic device (101) illustrated in FIG. 1 depending on the configuration. For example, the electronic device (400) may additionally include a button (e.g., input module (150) of FIG. 1), an acceleration sensor (e.g., sensor module (176) of FIG. 1), and / or an antenna (e.g., antenna module (197) of FIG. 1).

[0080] According to one embodiment, the processor (420) may include a microcontroller and / or communication circuitry, and may be implemented as a processing circuit that controls various components of the electronic device (400), for example. According to one embodiment, the processor (420) may include communication circuitry (e.g., the communication module (190) of FIG. 1) and may perform wireless communication with an external electronic device.

[0081] In one embodiment, the processor (420) may transmit and / or receive various data with an external electronic device via wireless communication. For example, the wireless communication may include short-range communication such as wireless local area network (WLAN), Bluetooth, Bluetooth low energy (BLE), Ultra-Wideband (UWB), or Infrared Data Association (IrDA). Although the processor (420) includes an example of a communication circuit described herein, at least a portion of the communication circuit may be implemented as a separate component from the processor (420). For example, the processor (420) may include Bluetooth and / or BLE communication circuitry, and the UWB communication circuitry may be implemented as a separate component.

[0082] According to one embodiment, the processor (420) may include at least some components of a memory (e.g., memory (130) of FIG. 1). For example, the processor (420) may store various data for controlling various components of the electronic device (400).

[0083] According to one embodiment, the processor (420) may control the overall operation of the electronic device (400) and the signal flow between internal components of the electronic device (400), and perform data processing. For example, the processor (420) may control an operatively connected booster circuit (430). For example, the processor (420) may cause the audio output device (440) to operate through the booster circuit (430) when the electronic device (400) is determined to be lost. For example, the processor (420) may transmit an operation signal (Boost EN) and / or an alarm operation signal (Vibration) of the booster circuit (430) to the booster circuit (430).

[0084] According to one embodiment, the booster circuit (430) can control the operation of the audio output device (440). For example, the booster circuit (430) can control the voltage output by the booster circuit (430) and input to the audio output device (440) as a driving voltage for operating the audio output device (440) based on the output voltage of the battery (410).

[0085] According to one embodiment, the booster circuit (430) may include a first comparator (431), a second comparator (432), and an amplifier (433).

[0086] According to one embodiment, the booster circuit (430) can compare the output voltage value (Ext.REF) of the battery (410) with a reference voltage value (Threshold Vol.) through the second comparator (432), and when the output voltage value of the battery (410) is equal to or greater than the reference voltage value, the first comparator (431) can select the internal reference voltage (Int.REF) and transmit a signal value (REF_SEL) to the first comparator (431) so as to input a specified fixed voltage to the audio output device (440) through the amplifier (433).

[0087] According to one embodiment, the first comparator (431) may be implemented as a selector that outputs a single voltage value based on the output value of the second comparator (432) or outputs a variable voltage by determining one of a plurality of voltage values.

[0088] According to one embodiment, the booster circuit (430) may input a variable voltage that varies based on the output voltage value (Ext.REF) of the battery (410) to the audio output device (440) through the first comparator (431) when the output voltage value (Ext.REF) of the battery (410) is less than the reference voltage value (Threshold Vol.). When the output voltage value of the battery (410) is less than the reference voltage value, the variable voltage value input to the audio output device (440) may be lower than a designated fixed voltage value input to the audio output device (440) when the output voltage value of the battery (410) is equal to or greater than the reference voltage value.

[0089] According to one embodiment, the booster circuit (430) may determine a variable voltage value to be input to the audio output device (440) based on the output voltage value of the battery (410) through the first comparator (431) when the output voltage value of the battery (410) is less than the reference voltage value. For example, the booster circuit (430) may compare the output voltage value of the battery (410) with a plurality of reference voltage stages and determine a variable voltage value to be input to the audio output device (440) based on the comparison. For example, the plurality of reference voltage stages may be distinguished into a plurality of stages such as a first reference voltage value less than or equal to a second reference voltage value, a second reference voltage value less than or equal to a third reference voltage value, and / or a fourth reference voltage value less than or equal to a third reference voltage value. For example, the variable voltage value to be input to the audio output device (440) may be determined based on a stage to which the output voltage value of the battery (410) corresponds among the plurality of reference voltage stages.

[0090] According to one embodiment, the booster circuit (430) may include a memory (e.g., a register) that stores a plurality of reference voltage values ​​corresponding to a plurality of steps according to variations in the output voltage value of the battery (410).

[0091] According to one embodiment, the booster circuit (430) may adjust the input voltage of the audio output device (440) by referring to feedback (Boost Volt. Feed Back) on the input voltage of the audio output device (440) (e.g., input voltage estimation) when the output voltage value of the battery (410) is lower than the reference voltage value.

[0092] According to one embodiment, the booster circuit (430) may input a fixed voltage to the audio output device (440) when the output voltage value of the battery (410) is equal to or greater than the reference voltage value, without referring to feedback on the input voltage.

[0093] According to one embodiment, when the booster circuit (430) inputs a variable voltage value to the audio output device (440), the processor (420) and / or the booster circuit (430) can check the battery (410) output voltage through the first comparator (431) at a specified cycle, check the changed or updated variable voltage value based thereon, and control the amplifier (433) to input the changed variable voltage value to the audio output device (440).

[0094] According to one embodiment, the booster circuit (430) can store one or more reference voltage values ​​for determining a voltage value input to the audio output device (440) based on an external voltage value from the battery (410).

[0095] According to one embodiment, the sound output device (440) can output a sound such as a notification sound according to the vibration of a certain component, such as a buzzer, bell, or speaker, based on the driving voltage input from the booster circuit (430).

[0096] According to one embodiment, an electronic device (e.g., an electronic device (200, 300, or 400) of FIG. 2, FIG. 3, or FIG. 4) includes a battery (e.g., a battery (210, 310, or 410) of FIG. 2, FIG. 3, or FIG. 4), an audio output device (e.g., an audio output device (240, 340, or 440) of FIG. 2, FIG. 3, or FIG. 4), and a booster circuit (e.g., a booster circuit (230, 330, or 430) of FIG. 2, FIG. 3, or FIG. 4) for inputting a voltage to the audio output device based on an output voltage value of the battery, wherein the booster circuit is configured to compare the output voltage value of the battery with a reference value, input a designated fixed voltage to the audio output device if the output voltage value of the battery is equal to or greater than the reference value, and input a variable voltage lower than the fixed voltage to the audio output device based on the output voltage value if the output voltage value of the battery is less than the reference value. Can be.

[0097] According to one embodiment, the booster circuit may include a comparator (e.g., comparator (331, 431 or 432) of FIG. 3 or FIG. 4) that compares the output voltage value with the reference voltage value.

[0098] According to one embodiment, the booster circuit may include a memory (e.g., a register) that stores a plurality of reference voltage values ​​corresponding to a plurality of steps according to variations in the output voltage value.

[0099] According to one embodiment, the booster circuit may further include another comparator (e.g., comparator (431 or 432) of FIG. 4) that compares the output voltage value with the plurality of reference voltage values ​​to determine a voltage corresponding to one of the plurality of reference voltage values.

[0100] According to one embodiment, the other comparator can compare the output voltage value changed according to the change in the output voltage value with the plurality of reference voltage values ​​to determine a voltage corresponding to another one of the plurality of reference voltage values.

[0101] According to one embodiment, the booster circuit may include an amplifier (e.g., amplifier (333 or 433) of FIG. 3 or FIG. 4) for generating the fixed voltage or the variable voltage and inputting it to the sound output device.

[0102] In one embodiment, the booster circuit may include a feedback path for feeding back a voltage input to the audio output to control the operation of the amplifier.

[0103] According to one embodiment, the booster circuit can adjust the operation of the amplifier based on the feedback when the output voltage value of the battery is less than the reference value.

[0104] According to one embodiment, the device may further include a processor that compares the output voltage value of the battery with the reference value and applies a signal to the booster circuit to control the booster circuit.

[0105] According to one embodiment, the processor may determine information about an input voltage of the audio output device by comparing the output voltage value of the battery with the reference value, and apply the signal including the information to the booster circuit through a signal line.

[0106] FIG. 5 is a diagram illustrating an example of voltage control of an electronic device (e.g., electronic device (200, 300, or 400) of FIG. 2, FIG. 3, or FIG. 4) according to one embodiment.

[0107] Referring to FIG. 5, the horizontal axis may represent the output voltage (Batt.Voltage) of a battery (e.g., battery (210, 310 or 410) of FIG. 2, FIG. 3 or FIG. 4), and the vertical axis may represent the output voltage (Vout) of a booster circuit (e.g., booster circuit (230, 330 or 430) of FIG. 2, FIG. 3 or FIG. 4). The battery output voltage (Batt.Voltage) of the horizontal axis is exemplarily illustrated as having a larger value in the left direction and a smaller value in the right direction. When the battery output voltage (Batt.Voltage) is equal to or greater than the reference voltage (Threshold Voltage) (503), the output voltage of the booster circuit can be adjusted to a fixed voltage (Vmax) (501), as illustrated in an area (A) of FIG. 5.

[0108] According to one embodiment, when the output voltage of the battery (Batt.Voltage) is lower than or equal to the reference voltage (Threshold Voltage) (503), the output voltage of the booster circuit can be adjusted to a variable voltage that varies over time, as illustrated in region (B) of FIG. 5. The variable voltage can vary as the battery output voltage decreases, for example, to a minimum voltage (504), as illustrated in region (B) of FIG. 5. The variable voltage can be lower than the fixed voltage (Vmax) (501). The variable voltage can be higher than the minimum voltage (Vmin) (502) for operation of an audio output device (e.g., audio output device (240, 340, or 440) of FIG. 2, 3, or 4).

[0109] FIG. 6 is a flowchart for explaining a voltage control method of an electronic device (e.g., the electronic device (200, 300, or 400) of FIG. 2, FIG. 3, or FIG. 4) according to one embodiment.

[0110] According to one embodiment, the electronic device may compare an output voltage value of a battery (e.g., battery 210, 310, or 410 of FIG. 2, FIG. 3, or FIG. 4) to a reference voltage value in operation 601.

[0111] According to one embodiment, the electronic device may operate in a fixed voltage mode in operation 603 when the output voltage value of the battery is equal to or greater than the reference voltage value (No in operation 601), such that the booster circuit (e.g., the booster circuit (230, 330 or 430) of FIG. 2, FIG. 3 or FIG. 4) inputs a specified fixed voltage to the audio output unit (e.g., the audio output unit (240, 340 or 440) of FIG. 2, FIG. 3 or FIG. 4).

[0112] According to one embodiment, the electronic device may operate in a variable voltage mode in operation 605 when the output voltage value of the battery is less than the reference voltage value (Yes in operation 601), such that the booster circuit inputs a variable voltage that varies based on the battery output voltage value to the audio output device. The variable voltage value input to the audio output device when the output voltage value of the battery is less than the reference voltage value may be lower than a designated fixed voltage value input to the audio output device when the output voltage value of the battery is greater than or equal to the reference voltage value.

[0113] According to one embodiment, the processor and / or booster circuit of the electronic device can determine a variable voltage value to be input to the audio output device based on the battery output voltage value when the output voltage value of the battery is less than a reference voltage value. For example, the booster circuit can compare the output voltage value of the battery with a plurality of reference voltage stages and determine the variable voltage value to be input to the audio output device based thereon. For example, the plurality of reference voltage stages can be distinguished into a plurality of stages, such as a first stage less than a first reference voltage value and greater than a second reference voltage value, a second stage less than the second reference voltage value and greater than a third reference voltage value, and / or a third stage less than the third reference voltage value and greater than a fourth reference voltage value. For example, the variable voltage value to be input to the audio output device can be determined based on a stage to which the output voltage value of the battery corresponds among the plurality of reference voltage stages. For example, multiple reference voltage stages can be distinguished as multiple stages of less than 2.70 V and more than 2.65 V for the first stage, less than 2.65 V and more than 2.60 V for the second stage, less than 2.60 V and more than 2.55 V for the third stage, and less than 2.55 V for the fourth stage, and when the fixed voltage in the case of a reference voltage of 2.70 V or more is set to 12 V, output voltage values ​​of 10.0 V for the first stage, 9.0 V for the second stage, 8.0 V for the third stage, and 7.0 V for the fourth stage can be set.

[0114] In one embodiment, the electronic device may be configured to check the battery voltage at specified intervals in a variable voltage mode and change the voltage input to the audio output device based on the battery voltage. Meanwhile, when the volume of the audio output device is set to a low volume, a low fixed voltage value (e.g., 5.0 V) may be set.

[0115] FIG. 7 is a flowchart for explaining a voltage control method of an electronic device (e.g., the electronic device (200, 300, or 400) of FIG. 2, FIG. 3, or FIG. 4) according to one embodiment.

[0116] According to one embodiment, the electronic device may turn on a booster circuit (e.g., booster circuit (230, 330, or 430) of FIG. 2, FIG. 3, or FIG. 4) at operation 701. For example, a processor of the electronic device (e.g., processor (220, 320, or 420) of FIG. 2, FIG. 3, or FIG. 4) may change an operation signal (Boost En) transmitted to the booster circuit from low to high and transmit it.

[0117] In one embodiment, the electronic device may cause an audio output device (e.g., audio output device (240, 340, or 440) of FIG. 2, FIG. 3, or FIG. 4) to turn on at operation 703. For example, the electronic device may turn on the audio output device upon determining that the device is in a lost state and determining to output sound. For example, the processor may transmit a signal (vibration start) to a booster circuit to cause the audio output device to vibrate.

[0118] According to one embodiment, the electronic device may compare an output voltage value of a battery (e.g., battery (210, 310 or 410) of FIG. 2, FIG. 3 or FIG. 4) with a reference voltage value at operation 705 in the processor or booster circuit.

[0119] According to one embodiment, the electronic device may operate in a fixed voltage mode in operation 707 when the output voltage value of the battery is greater than or equal to the reference voltage value (No of operation 705), such that the booster circuit inputs a specified fixed voltage to the audio output device.

[0120] According to one embodiment, the electronic device may operate in a variable voltage mode in operation 709 when the output voltage value of the battery is less than the reference voltage value (Yes in operation 705), such that the booster circuit may automatically input a variable voltage based on the battery output voltage value to the audio output device. The variable voltage value input to the audio output device when the output voltage value of the battery is less than the reference voltage value may be lower than a designated fixed voltage value input to the audio output device when the output voltage value of the battery is greater than or equal to the reference voltage value.

[0121] According to one embodiment, the processor and / or booster circuit of the electronic device can determine a variable voltage value to be input to the audio output device based on the battery output voltage value when the output voltage value of the battery is less than a reference voltage value. For example, the booster circuit can compare the output voltage value of the battery with a plurality of reference voltage stages and determine the variable voltage value to be input to the audio output device based thereon. For example, the plurality of reference voltage stages can be distinguished into a plurality of stages, such as a first stage less than a first reference voltage value and greater than a second reference voltage value, a second stage less than the second reference voltage value and greater than a third reference voltage value, and / or a third stage less than the third reference voltage value and greater than a fourth reference voltage value. For example, the variable voltage value to be input to the audio output device can be determined based on a stage to which the output voltage value of the battery corresponds among the plurality of reference voltage stages. For example, multiple reference voltage stages can be distinguished as multiple stages of less than 2.70 V and more than 2.65 V for the first stage, less than 2.65 V and more than 2.60 V for the second stage, less than 2.60 V and more than 2.55 V for the third stage, and less than 2.55 V for the fourth stage, and when the fixed voltage in the case of a reference voltage of 2.70 V or more is set to 12 V, output voltage values ​​of 10.0 V for the first stage, 9.0 V for the second stage, 8.0 V for the third stage, and 7.0 V for the fourth stage can be set.

[0122] In one embodiment, the electronic device may be configured to check the battery voltage at specified intervals in a variable voltage mode and change the voltage input to the audio output device based on the battery voltage. Meanwhile, when the volume of the audio output device is set to a low volume, a low fixed voltage value (e.g., 5.0 V) may be set.

[0123] In one embodiment, the electronic device may determine whether to turn off the audio output unit at operation 711. If the audio output unit is turned off, for example, the processor may transmit a signal (vibration end) to the booster circuit to terminate vibration generation of the audio output unit. If the audio output unit is not turned off, the electronic device may return to operation 705 to compare the output voltage value of the battery with a reference voltage value and cause the booster circuit to operate in a fixed voltage mode or a variable voltage mode. In one embodiment, if it is determined to turn off the audio output unit at operation 711, the processor of the electronic device may change the operation signal (Boost En) transmitted to the booster circuit from high to low and transmit it.

[0124] According to one embodiment, a method of an electronic device (e.g., an electronic device (200, 300, or 400) of FIG. 2, 3, or 4) may include an operation of controlling a booster circuit (e.g., a booster circuit (230, 330, or 430) of FIG. 2, 3, or 4) that inputs a voltage to an audio output device (e.g., an audio output device (240, 340, or 440) of FIG. 2, 3, or 4) based on an output voltage value of a battery (e.g., a battery (210, 310, or 410) of FIG. 2, 3, or 4), the method including an operation of comparing the output voltage value of the battery with a reference value, an operation of inputting a designated fixed voltage to the audio output device if the output voltage value of the battery is equal to or greater than the reference value, and an operation of inputting a variable voltage lower than the fixed voltage to the audio output device based on the output voltage value if the output voltage value of the battery is less than the reference value.

[0125] According to one embodiment, a plurality of reference voltage values ​​corresponding to a plurality of steps according to a change in the output voltage value can be stored in the booster circuit.

[0126] According to one embodiment, the method may further include comparing the output voltage value with the plurality of reference voltage values ​​to determine a voltage corresponding to one of the plurality of reference voltage values.

[0127] According to one embodiment, the method may further include comparing the output voltage value, which has changed according to the change in the output voltage value, with the plurality of reference voltage values ​​to determine a voltage corresponding to another one of the plurality of reference voltage values.

[0128] According to one embodiment, the method may further include an operation of amplifying for input to the sound output device based on the fixed voltage or the variable voltage.

[0129] According to one embodiment, the method may further include performing feedback to control the amplification operation by feeding back a voltage input to the sound output device.

[0130] According to one embodiment, the amplification operation can be adjusted based on the feedback when the output voltage value of the battery is less than the reference value.

[0131] According to one embodiment, the processor of the electronic device may compare the output voltage value of the battery with the reference value and apply a signal for controlling the booster circuit to the booster circuit through a signal line.

[0132] According to one embodiment, the processor may determine information about an input voltage of the sound output device by comparing the output voltage value of the battery with the reference value, and apply the signal including the information to the booster circuit through the signal line.

[0133] According to one embodiment, a non-transitory computer-readable recording medium having recorded thereon a computer program, wherein the computer program, when executed by an electronic device including a battery, may store one or more instructions that cause the electronic device to perform the method and / or operation exemplified above.

[0134] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0135] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0136] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0137] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0138] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0139] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0140] The embodiments disclosed in this document are merely examples presented to facilitate easy explanation and understanding of the technical content, and are not intended to limit the scope of the technology disclosed in this document. Therefore, the scope of the technology disclosed in this document should be interpreted to include all modifications or variations derived based on the technical concepts of the various embodiments disclosed in this document, in addition to the embodiments disclosed herein.

Claims

1. In electronic devices, battery; audio output device; and A booster circuit for inputting voltage to the sound output device based on the output voltage value of the battery; The above booster circuit compares the output voltage value of the battery with a reference value, If the output voltage value of the above battery is greater than or equal to the reference value, a specified fixed voltage is input to the sound output device, If the output voltage value of the battery is lower than the reference value, a variable voltage lower than the fixed voltage is set to be input to the sound output device based on the output voltage value. device.

2. In paragraph 1, The above booster circuit is a device including a comparator that compares the output voltage value with the reference voltage value.

3. In paragraph 2, The above booster circuit is a device including a memory that stores a plurality of reference voltage values ​​corresponding to a plurality of steps according to fluctuations in the output voltage value.

4. In paragraph 3, The booster circuit further includes another comparator for comparing the output voltage value with the plurality of reference voltage values ​​and determining a voltage corresponding to one of the plurality of reference voltage values.

5. In paragraph 4, The above other comparator is a device that compares the output voltage value, which has changed according to the change in the output voltage value, with the plurality of reference voltage values ​​and determines a voltage corresponding to another one of the plurality of reference voltage values.

6. In paragraph 1, The above booster circuit is a device including an amplifier for generating the fixed voltage or the variable voltage and inputting it to the audio output device.

7. In paragraph 6, The above booster circuit is a device including a feedback path for controlling the operation of the amplifier by feeding back the voltage input to the audio output device.

8. In paragraph 7, The above booster circuit is a device that controls the operation of the amplifier based on the feedback when the output voltage value of the battery is less than the reference value.

9. In paragraph 1, A device further comprising a processor for comparing the output voltage value of the battery with the reference value and applying a signal to the booster circuit for controlling the booster circuit.

10. In paragraph 9, The above processor is a device that determines information about an input voltage of the audio output device by comparing the output voltage value of the battery with the reference value, and applies the signal including the information to the booster circuit through a signal line.

11. In the method of an electronic device, An operation of comparing the output voltage value of the battery with a reference value to control a booster circuit which inputs voltage to an audio output device based on the output voltage value of the battery; An operation of inputting a designated fixed voltage to the sound output device when the output voltage value of the battery is greater than or equal to the reference value; and A method comprising: an operation of inputting a variable voltage lower than the fixed voltage to the sound output device based on the output voltage value when the output voltage value of the battery is lower than the reference value.

12. In paragraph 11, A method further comprising an action of comparing the output voltage value with the plurality of reference voltage values ​​and determining a voltage corresponding to one of the plurality of reference voltage values.

13. In paragraph 12, A method further comprising an operation of comparing the output voltage value, which has changed according to a change in the output voltage value, with the plurality of reference voltage values, and determining a voltage corresponding to another one of the plurality of reference voltage values.

14. In paragraph 11, A method further comprising an operation of amplifying for inputting to the sound output device based on the fixed voltage or the variable voltage.

15. In paragraph 14, A method further comprising an action of performing feedback for controlling the amplification operation by feeding back a voltage input to the sound output device.

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