Audio device including in electronic device and method of controlling the same

Abstract

Embodiments of the present disclosure relate to an audio device for blocking noise generated in an electronic device in an idle state. An audio device may include a processor configured to output an audio signal. The audio device may include an audio amplifier configured to amplify and output an audio signal output from a processor through an interface electrically connected to the processor. The audio device may include a switching component configured to switch an amplified audio signal output from an audio amplifier to a sound output in response to a switching control signal. The audio device may include a sound output member configured to output the amplified audio signal transmitted through the switching member to the outside. The audio device may include a rectifier configured to output a switching control signal for activating the switching component if there is an audio signal transmitted from the processor through the interface to the audio amplifier.

Description

Technical Field

[0001] The present disclosure relates to an audio device for blocking audible noise in an electronic device and a control method thereof. Background Art

[0002] Generally, electronic devices such as smart phones, smart tablets, tablet PCs, or multimedia players may have functions that allow users to use multimedia services such as music or video or provide voice or video call communication services. When a user uses a multimedia service or a communication service, sound may be output through an output device such as a built-in speaker or receiver, or through a headset connected to a headphone jack or port (e.g., a Type-C port).

[0003] The electronic device may have other components (e.g., cameras, RF modules) or signal lines (e.g., video or RF signal lines) placed or passing near the component that processes the audio signal. In the electronic device, when the audio signal processing component is in an idle state, the other components or signal lines may cause audible noise. The idle state here may be a state where no audio signal is output. Summary of the invention

[0004] Technical Solution

[0005] The present disclosure may provide an audio device that blocks audible noise in an idle state in which no sound signal is output in an electronic device, and a control method thereof.

[0006] In the present disclosure, an electronic device may include an audio device configured to control the output of an audio signal. The audio device may include: a processor configured to output an audio signal, and an audio amplifier configured to amplify and output the audio signal, which is output from the processor through an interface electrically connected to the processor. The audio device may include a switch component configured to switch the amplified audio signal output from the audio amplifier to a sound output member in response to a switch control signal. The audio device may include a sound output member configured to output the amplified audio signal transmitted through the switch component to the outside. The audio device may include a rectifier configured to output a switch control signal for enabling or disabling the switch component if there is an audio signal transmitted from the processor to the audio amplifier through the interface.

[0007] In the present disclosure, an electronic device may provide a method for operating to control the output of an audio signal. The method may include obtaining, by the electronic device, a signal in an interface corresponding to an input for audio amplification. The method may include outputting, by the electronic device, an amplified signal using the signal in the interface as an input. The method may include connecting, by the electronic device, a signal for transmitting the amplified signal to a path for outputting an audio signal by rectifying the signal obtained from the interface.

[0008] In the present disclosure, an electronic device may include a non-transitory computer-readable storage medium storing one or more programs. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to obtain a signal in an interface corresponding to an input for audio amplification. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to output an amplified signal using the signal in the interface as an input. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to connect a path for transmitting the amplified signal to an output audio signal through a signal rectified from the signal obtained from the interface.

[0009] The technical objectives of the present disclosure are not limited to the above-mentioned contents, and a person of ordinary skill in the art may derive other technical objectives from the exemplary embodiments of the present disclosure.

[0010] According to an embodiment of the present disclosure, user convenience can be provided by removing noise heard in an idle state.

[0011] The effects of the present invention are not limited to the above, and other unmentioned effects will be apparent to those skilled in the art from the following description. In other words, those skilled in the art may also derive unexpected effects from the exemplary embodiments of the present invention to practice the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a diagram showing an electronic device in a network environment according to various embodiments;

[0013] Figure 2 is a block diagram showing an audio module according to an embodiment;

[0014] Figure 3 is a block diagram showing an audio device in an electronic device according to an embodiment of the present disclosure;

[0015] Figure 4 is a block diagram showing an audio device in an electronic device according to an embodiment of the present disclosure;

[0016] Figure 5 It shows the flow through Figure 4 The electrical signal S of each line of the audio device 1 , S 2 , S 3 and S 4 Waveform diagram of

[0017] Figure 6 is a block diagram showing an audio device in an electronic device according to an embodiment of the present disclosure;

[0018] Figure 7 It shows the flow through Figure 6 The electrical signal S of each line of the audio device 1 , S 2 , S 3 , S 4 and S 5 Waveform diagram of

[0019] Figures 8a to 8e is a layout diagram showing components in an audio device included in an electronic device according to an embodiment of the present disclosure;

[0020] Figure 9a It is shown that the Figure 8a A block diagram of an audio amplifier in an audio device;

[0021] Figure 9b It is shown that the Figure 8b A block diagram of an audio amplifier in an audio device;

[0022] Fig.9c It is shown that the Figure 8c or Figure 8d A block diagram of an audio amplifier in an audio device;

[0023] Figure 9d It is shown that the Figure 8e A block diagram of an audio amplifier in an audio device;

[0024] Fig.10 It is shown that the Figures 8a to 8e Circuit diagram of a rectifier in an audio device;

[0025] Fig.11 It is shown that the Figures 8a to 8e A circuit diagram of a switch component in an audio device;

[0026] Fig.12 is a block diagram showing an audio device in an electronic device according to an embodiment of the present disclosure;

[0027] Fig.13 is a block diagram showing an audio device in an electronic device according to an embodiment of the present disclosure;

[0028] Fig.14 It shows the flow through Fig.13 The electrical signal S of each line of the audio device 1 To S 8 A waveform diagram of

[0029] Fig.15 is a plan view showing an electronic device according to an embodiment of the present disclosure.

[0030] In the description combined with the accompanying drawings, the same or similar reference numerals may be used to refer to the same or similar elements. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present disclosure are described in detail with reference to the accompanying drawings so that those skilled in the art to which the present disclosure belongs can easily practice the present disclosure. However, the present disclosure can be implemented in various other forms and is not limited to the embodiments described herein. Throughout the specification and the accompanying drawings, the same or similar reference numerals may be used to represent the same or similar elements. In addition, for clarity and brevity, known functions and configurations are not described in the accompanying drawings and related descriptions.

[0032] Figure 1 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Figure 1 , the electronic device 101 in the network environment 100 may communicate with at least one of the electronic devices 102 via a first network 198 (e.g., a short-range wireless communication network), or communicate with the electronic device 104 or the server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound 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 user identification module (SIM) 196, or an antenna module 197. In an embodiment, at least one of the components (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added in the electronic device 101. Depending on the implementation, some of the components (eg, the sensor module 176, the camera module 180, or the antenna module 197) may be integrated into a single component (eg, the display module 160).

[0033] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 that is connected to the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., sensor module 176 or communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the generated data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is independent of or combined with the main processor 121 in operation. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be configured to use lower power than the main processor 121, or configured to be dedicated to a specific function. The auxiliary processor 123 may be implemented as separate from the main processor 121, or as part of the main processor 121.

[0034] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 may replace the main processor 121 and control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., display module 160, sensor module 176, or communication module 190), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., display module 160, sensor module 176, or communication module 190) together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 180 or a communication module 190) that is functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated via machine learning. For example, such learning can be performed by an electronic device 101 that executes artificial intelligence or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, for example. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be 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) or a deep Q network or a combination of two or more thereof, but is not limited thereto. Additionally or optionally, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0035] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, input data or output data of software (e.g., the program 140) and commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

[0036] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0037] The input module 150 may receive commands or data to be used by other components (e.g., the processor 120) of the electronic device 101 from outside (e.g., a user) of the electronic device 101. The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0038] The sound output module 155 can 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 may be used for general purposes such as playing multimedia or playing records. The receiver may be used to receive incoming calls. Depending on the implementation, the receiver may be implemented as a separate part from the speaker, or as part of the speaker.

[0039] The display module 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display module 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 160 may include a touch sensor configured to detect a touch or a pressure sensor configured to measure the strength of a force generated by a touch.

[0040] The audio module 170 can convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 can obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0041] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a user's state) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. Depending on the embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0042] The interface 177 may support one or more specific protocols for connecting the electronic device 101 directly (e.g., wired) or wirelessly with an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0043] The connection terminal 178 may include a connector, via which the electronic device 101 may be physically connected to an external electronic device (e.g., the electronic device 102). Depending on the 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).

[0044] The haptic module 179 may convert the electric signal into mechanical stimulation (eg, vibration or motion) or electric stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electric stimulator.

[0045] The camera module 180 may capture still images or moving images. Depending on the embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

[0046] The power management module 188 may manage power supplied to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0047] The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0048] The communication module 190 can support establishing 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 perform communication via the established communication channel. The communication module 190 may include one or more communication processors that are independently operable with the processor 120 (e.g., an application processor (AP)) and support direct (e.g., wired) communication or wireless communication. According to an 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 (PLC) module). A corresponding one of these communication modules can communicate via a first network 198 (e.g., a short-range communication network such as Bluetooth TM The wireless communication module 192 can communicate with an external electronic device 104 using a wireless communication network (e.g., a wireless fidelity (Wi-Fi) direct connection or an infrared data association (IrDA)) or a second network 199 (e.g., a long-distance communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a local area network (LAN) or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can use user information (e.g., an international mobile subscriber identity (IMSI)) stored in the user identification module 196 to identify or authenticate the electronic device 101 in a communication network (such as a first network 198 or a second network 199).

[0049] The wireless communication module 192 can support 5G networks and next-generation communication technologies (e.g., new radio (NR) access technology) after the 4G network. NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., millimeter wave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., a second network 199). Depending on the embodiment, the wireless communication module 192 can support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), a loss coverage for implementing mMTC (e.g., 164 dB or less), or a U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less for a round trip).

[0050] The antenna module 197 may send a signal or power to the outside (e.g., an external electronic device) or receive a signal or power from the outside (e.g., an external electronic device). According to an 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 printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an antenna array). In this case, for example, the communication module 190 may select at least one antenna suitable for a communication scheme used in a communication network (such as the first network 198 or the second network 199) from a plurality of antennas. Then, a signal or power may be sent or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, other components (e.g., a radio frequency integrated circuit (RFIC)) in addition to the radiator may also be formed as components of the antenna module 197.

[0051] According to various embodiments, the antenna module 197 may form a millimeter wave antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, an RFIC, and a plurality of antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., millimeter wave band), and the plurality of antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

[0052] At least some of the above components can be interconnected via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicate signals (e.g., commands or data) therebetween.

[0053] According to an embodiment, commands or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. The external electronic device 102 or 104 may each be a device of the same type or a different type as the electronic device 101. According to an embodiment, all or some of the operations to be run on the electronic device 101 may be run on one or more of the external electronic devices 102 or 104 or the server 108. For example, if the electronic device 101 should automatically perform a function or service, or should perform a function or service in response to a request from a user or another device, the electronic device 101 may request one or more external electronic devices to perform at least part of the function or service instead of or in addition to performing the function or service. The one or more external electronic devices that receive the request may perform at least part of the requested function or service, or perform another function or another service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least part of the reply to the request, whether or not the result is further processed. To this end, for example, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology, or client-server computing technology can be used. The electronic device 101 can use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. The server 108 may be an intelligent server using machine learning and / or neural networks. According to an embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 can be applied to intelligent services (e.g., smart homes, smart cities, smart cars, or health care) based on 5G communication technology or IoT-related technologies.

[0054] Figure 2 2 is a block diagram 200 illustrating the audio module 170 according to various embodiments. Figure 2 The audio module 170 may include, for example, an audio input interface 210, an audio input mixer 220, an analog-to-digital converter (ADC) 230, an audio signal processor 240, a digital-to-analog converter (DAC) 250, an audio output mixer 260, or an audio output interface 270.

[0055] The audio input interface 210 can receive an audio signal corresponding to a sound obtained from the outside of the electronic device 101 via a microphone (e.g., a dynamic microphone, a condenser microphone, or a piezoelectric microphone), which is configured as a component of the input module 150 or configured separately from the electronic device 101. For example, if an audio signal is obtained from an external electronic device 102 (e.g., headphones or a microphone), the audio input interface 210 can be directly connected to the external electronic device 102 via the connection terminal 178, or wirelessly connected to the external electronic device 102 via the wireless communication module 192 (e.g., Bluetooth TM Communication) to receive audio signals. According to an embodiment, the audio input interface 210 can receive a control signal related to an audio signal obtained from an external electronic device 102 (for example, a volume adjustment signal received via an input button). The audio input interface 210 may include multiple audio input channels, and different audio signals may be received via a corresponding one of the multiple audio input channels, respectively. According to an embodiment, additionally or alternatively, the audio input interface 210 may receive an audio signal from another component of the electronic device 101 (for example, the processor 120 or the memory 130).

[0056] The audio input mixer 220 may synthesize a plurality of input audio signals into at least one audio signal. For example, according to an embodiment, the audio input mixer 220 may synthesize a plurality of analog audio signals input via the audio input interface 210 into at least one analog audio signal.

[0057] The ADC 230 may convert an analog audio signal into a digital audio signal. For example, according to an embodiment, the ADC 230 may convert an analog audio signal received via the audio input interface 210 or an analog audio signal synthesized via the audio input mixer 220 additionally or alternatively into a digital audio signal.

[0058] The audio signal processor 240 may perform various processing on a digital audio signal received via the ADC 230 or a digital audio signal received from another component of the electronic device 101. For example, according to an embodiment, the audio signal processor 240 may perform a change in sampling rate, application of one or more filters, interpolation processing, amplification or attenuation of the entire or a portion of a frequency bandwidth, noise processing (e.g., attenuation of noise or echo), change of channels (e.g., switching between mono and stereo), mixing or extraction of a specified signal on one or more digital audio signals. According to an embodiment, one or more functions of the audio signal processor 240 may be implemented in the form of an equalizer.

[0059] The DAC 250 may convert a digital audio signal into an analog audio signal. For example, according to an embodiment, the DAC 250 may convert a digital audio signal processed by the audio signal processor 240 or a digital audio signal obtained from another component of the electronic device 101 (eg, the processor 120 or the memory 130) into an analog audio signal.

[0060] The audio output mixer 260 may synthesize a plurality of audio signals to be output into at least one audio signal. For example, according to an embodiment, the audio output mixer 260 may synthesize an analog audio signal converted by the DAC 250 and another analog audio signal (e.g., an analog audio signal received via the audio input interface 210) into at least one analog audio signal.

[0061] The audio output interface 270 can output the analog audio signal converted by the DAC 250, or the analog audio signal synthesized by the audio output mixer 260 additionally or alternatively to the outside of the electronic device 101 via the sound output module 155. The sound output module 155 may include, for example, a speaker or a receiver such as a dynamic driver or a balanced armature driver. According to an embodiment, the sound output module 155 may include a plurality of speakers. In this case, the audio output interface 270 can output an audio signal with a plurality of different channels (e.g., stereo channels or 5.1 channels) via at least some of the plurality of speakers. According to an embodiment, the audio output interface 270 can be directly connected to an external electronic device 102 (e.g., an external speaker or earphone) via a connection terminal 178, or wirelessly connected to an external electronic device 102 (e.g., an external speaker or earphone) via a wireless communication module 192 to output an audio signal.

[0062] According to an embodiment, the audio module 170 may generate at least one digital audio signal by synthesizing a plurality of digital audio signals using at least one function of the audio signal processor 240 without separately including the audio input mixer 220 or the audio output mixer 260 .

[0063] According to an embodiment, the audio module 170 may include an audio amplifier (not shown) (e.g., a speaker amplification circuit) capable of amplifying an analog audio signal input via the audio input interface 210 or an audio signal output via the audio output interface 270. According to an embodiment, the audio amplifier may be configured as a module separate from the audio module 170.

[0064] Figure 3 FIG. 2 is a diagram showing an electronic device (eg, Figure 1 The audio device 300-1 (eg, Figure 2 Block diagram of the audio module 170).

[0065] refer to Figure 3 The audio device 300-1 may include a processor 310-1, an audio amplifier 320, a switch component 330, or a sound output member 340 (eg, Figure 1 The sound output module 155).

[0066] Processor 310-1 may not be provided as a substantially independent component (e.g., Figure 2 The audio signal processor 240 of FIG. 1 may be provided by, for example, a main processor (eg, Figure 1 main processor 121) or an auxiliary processor (e.g., Figure 1 The auxiliary processor 123 of the processor 310-1 may be used to perform the functions of the processor 310-1 instead. The processor 310-1 may be configured to perform various processes on the digital audio signal and output the digital audio signal. The processor 310-1 may process the digital audio signal and output the digital audio signal to the interface 350. The interface 350 may include, for example, a digital interface. However, it is not limited thereto. For example, the digital audio signal may be a signal received by an ADC (e.g., Figure 2 ADC 230) by inputting the input to an input interface (e.g., Figure 2 The audio signal input to the audio input interface 210 may be mixed in a mixer (eg, Figure 2 The digital interface 350 may be mixed with another audio signal in an audio input mixer 220 of the embodiment of the present invention. For example, the digital interface 350 may be an interface supporting a serial peripheral interface (SPI), an inter-integrated circuit (I2C), or an integrated inter-chip sound (I2S).

[0067] The audio amplifier 320 may be electrically connected to the processor 310-1. The audio amplifier 320 may be electrically connected to the processor 310-1 through the digital interface 350. The audio amplifier 320 may amplify and output an audio signal output from the processor 310-1 and transmitted through the digital interface 350. For example, the audio amplifier 320 may convert the amplified digital audio signal into an analog audio signal and output the analog audio signal.

[0068] The switch component 330 can open, disconnect or cut off, or close, connect or connect the path that electrically connects the audio amplifier 320 and the sound output member 340. The switch component 330 can perform a switch operation by a switch control signal (enable (EN) or disable (DIS)) provided from the outside. The switch control signal can be provided, for example, by the processor 310-1 through an operation by software or by one of the operations of hardware. For example, the operation by software can consider such as whether there is a requirement for a digital audio signal to be output to the digital interface 350 by the processor 310-1 and output the switch control signal. For example, if there is a digital audio signal to be output to the digital interface 350, the processor 310-1 can output a switch control signal (enable (EN)) for short-circuiting the switch component 330, so that the audio amplifier 320 and the sound output member 340 are electrically connected to each other. For example, if there is no digital audio signal to be output to the digital interface 350, the processor 310-1 may output a switch control signal (disable (DIS)) for opening the switch component 330 so as to electrically cut off the audio amplifier 320 and the sound output member 340. For example, the operation by hardware may consider such factors as whether there is a requirement for a digital audio signal to be output to the digital interface 350 by the processor 310-1 through a rectifier (e.g., Figure 4 The rectifier 410 of the digital interface 350 may output a switch control signal (enable (EN)) for short-circuiting the switch component 330, so that the audio amplifier 320 and the sound output member 340 are electrically connected. For example, if there is no digital audio signal to be output to the digital interface 350, the rectifier 410 may output a switch control signal (disable (DIS)) for opening the switch component 330, so that the audio amplifier 320 and the sound output member 340 are electrically disconnected.

[0069] The switch part 330 may be configured using, for example, a metal oxide semiconductor field effect transistor (MOSFET). However, the present disclosure is not limited thereto, and the switch part 330 may be configured by various types of switch elements.

[0070] The sound output part 340 can output the amplified audio signal transmitted from the audio amplifier 320 through the switch part 330 as a sound signal that the user can hear. The sound output part 340 may include an output interface (e.g., Figure 2 The sound output device 340 may include a DAC (eg, Figure 2 DAC 250) or mixer (e.g. Figure 2 The amplified audio signal may be converted into an analog audio signal by, for example, a DAC 250, and then output through an audio output interface 270. The converted analog signal may be mixed with another analog audio signal in an audio output mixer 260 before being output through the audio output interface 270. The sound output member 340 may share a speaker or a receiver included in a sound output module 155 of the electronic device 101. The speaker may be located, for example, in an electronic device (e.g., Figure 1 The receiver may be located at, for example, the upper end or the lower end of the electronic device 101. The sound output member 340 may share a connection terminal (for example, Figure 1 A USB port or a 3.5 mm port in the connection terminal 178 of the present invention can be inserted into the connection terminal 178. For example, a cable electrically connected to a sound output device (eg, earphone, headphone, speaker, etc.) can be inserted into the connection terminal 178.

[0071] According to an embodiment, the output terminal P provided in the processor 310-1 1 The digital interface 350 may be electrically connected to an input terminal P provided in the audio amplifier 320. 2 The output terminal P is set in the processor 310-1. 7 It can be electrically connected to the input terminal P provided in the switch component 330 8 .

[0072] According to an embodiment, the input terminal P provided in the audio amplifier 320 2 It can be electrically connected to the output terminal P provided in the processor 310-1. 1 The output terminal P provided in the audio amplifier 320 3 It can be electrically connected to the input terminal P provided in the switch component 330 4 .

[0073] According to an embodiment, the input terminal P provided in the switch component 330 4 It can be electrically connected to the output terminal P provided in the audio amplifier 320 3 The input terminal P provided in the switch component 3308 It can be electrically connected to the output terminal P provided in the processor 310-1. 7 The output terminal P provided in the switch component 330 5 It can be electrically connected to the input terminal P provided in the sound output member 340 6 .

[0074] According to an embodiment, the processor 310-1 may detect whether there is an audio signal. For example, the processor 310-1 may detect whether there is an audio signal to be output to the digital interface 350 electrically connected to the audio amplifier 320. When there is an audio signal to be output to the digital interface 350, the processor 310-1 may output an enable (EN) signal to the output terminal P. 7 When there is no audio signal to be output to the digital interface 350, the processor 310-1 may output a disable (DIS) signal to the output terminal P 7 The switch control signal, which is one of an enable (EN) signal or a disable (DIS) signal, may be transmitted to the input terminal P of the switch component 330. 8 .

[0075] According to an embodiment, the switch component 330 can be connected to the input terminal P 8 A switch control signal is received from processor 310-1. For example, the switch control signal may be one of an enable (EN) signal or a disable (DIS) signal. If the switch control signal is an enable (EN) signal, the switch component 330 may be closed, connected or turned on. The short circuit of the switch component 330 allows a path to be formed for transmitting the amplified audio signal output from the audio amplifier 320 to the sound output member 340. If the switch control signal is a disable (DIS) signal, the switch component 330 may be opened, disconnected or cut off. The opening of the switch component 330 will cut off the path for transmitting the amplified audio signal output from the audio amplifier 320 to the sound output member 340.

[0076] According to an embodiment, the processor 310-1 may control the switch component 330 in a timing control manner. For example, if an audio signal is generated, the processor 310-1 may output a signal (e.g., an enable (EN) signal or a disable (DIS) signal) for controlling the switch component 330 after a predetermined delay from the time point when the audio signal is generated. The predetermined delay may be a time interval that is difficult for a person to feel. For example, the predetermined delay may be a time interval of several milliseconds (ms) to tens of milliseconds (ms).

[0077] Figure 4 2 is a diagram showing an electronic device (eg, Figure 1 101).

[0078] and Figure 3 The audio device 300-1 is different. Figure 4 The audio device 300-2 includes the rectifier 410 as a separate component. Other components may be connected with Figure 3 The components of the audio device 300-1 are the same.

[0079] refer to Figure 4 The audio device 300-2 may include a processor 310-2, an audio amplifier 320, a switch component 330, a sound output member 340, or a rectifier 410. The processor 310-1 may consider, for example, whether there is a requirement for a digital audio signal to be output to the digital interface 350 and output the sound to the audio device 300-2 through a rectifier (e.g., Figure 4 rectifier 410) to output a switch control signal.

[0080] The rectifier 410 can be configured as a circuit such as a low pass filter (LPF). However, the present disclosure is not limited thereto and may include various types of filter circuits. The rectifier 410 can convert a pulse signal into a signal that maintains a constant voltage. The rectifier 410 can convert an AC type voltage into a DC type voltage. The converted signal can maintain a peak signal. The signal that maintains the peak signal can be defined as a high level signal. The high level signal can be an enable (EN) signal for controlling the connection switch component 330.

[0081] According to an embodiment, any point 315 on the digital interface 350 may be electrically connected to an input terminal P disposed in the rectifier 410. 7 The output terminal P is set in the rectifier 410 9 It can be electrically connected to the input terminal P provided in the switch component 330 8 .

[0082] If there is an audio signal to be output from the processor 310-2 toward the digital interface 350, the rectifier 410 may output the audio signal to the output terminal P 9 If there is no audio signal to be output from the processor 310-2 toward the digital interface 350, the rectifier 310-1 may output an enable (EN) signal to the output terminal P. 9 Output disable (DIS) signal. The switch control signal, which is one of the enable (EN) signal or the disable (DIS) signal, may be transmitted to the input terminal P of the switch component 330. 8 .

[0083] According to an embodiment, an electrical signal may be generated in each component of the audio device 300. The electrical signal may include an audio signal. The audio signal may flow on wires connected between the components. The audio signal flowing from the processor 310-2 to the audio amplifier 320 may be referred to as S 1 . Flows from any point 315 on the digital interface 350 to the input terminal P of the rectifier 410 7 The audio signal can be called S 1 From the output terminal P of the rectifier 410 9 flows to the input terminal P of the switch component 330 8 The audio signal can be called S 2 From the output terminal P of the audio amplifier 320 3 flows to the input terminal P of the switch component 330 4 The audio signal can be called S 3 From the output terminal P of the switch component 330 5 The sound output device 340 flows to the input terminal P 6 The audio signal can be called S 4 . refer to Figure 5 Describe the audio signal S 1 , S 2 , S 3 and S 4 Waveform diagram of .

[0084] Figure 5 It shows the flow through Figure 4 Audio devices in (e.g. Figure 4 The electrical signal S of each line of the audio device 300-2) 1 , S 2 , S 3 and S 4 Waveform diagram of .

[0085] refer to Figure 5 , segment (a) may be a segment that is not processed by the processor of the audio device 300-2 (eg, Figure 4 310 - 2 ) to a digital interface (eg, Figure 4 For example, the segment (a) may be a segment in which the audio device 300-2 operates in an idle state. If no audio signal is input, the audio device 300-2 may operate in an idle state.

[0086] Section (b) may be a section where there is an audio signal output by the processor 310-2 to the digital interface 350. For example, section (b) may be a portion where the audio device 300-2 operates in an active state. If there is an input audio signal, the audio device 300-2 may operate in an active state.

[0087] Signal S 1 It can be the output terminal P from the processor 310-2. 1 flows to the audio amplifier (for example, Figure 3 The input terminal P of the audio amplifier 320) 2 The electrical signal S 1 It can be a rectifier (for example, Figure 4 The rectifier 410 can be used to connect the output terminal P of the processor 310-2 1 and the input terminal P of the audio amplifier 320 2 The electrical signal is obtained at any point 315 on the digital interface 350 of the electrical connection.

[0088] In the signal S 1 For example, in segment (a) there may be a fine electric signal, and in segment (b) there may be a digital audio signal. 1 to 2 ) may correspond to audible noise. The audible noise signal may be generated by, for example, an electrical signal generated by an element or component disposed around the audio device 300-2 and / or an electrical signal flowing through a wire surrounding the audio device 300-2. 2 to 3 ) may correspond to a digital audio signal. For example, the digital audio signal may be output by the processor 310-2 through the output terminal P 1 Output to digital interface 350. The digital audio signal may have, for example, a +V dd A pulse form in which 0 is an upper level and 0 is a lower level.

[0089] Signal S 2 It can be signal S 1 Passing through rectifier 410 (eg, Figure 4 rectifier 410) and output to the output terminal P of the rectifier 410 9 The electrical signal.

[0090] Signal S 2 It can be from the output terminal P of the rectifier 410 9 Output to the switch component (e.g. Figure 3 The input terminal P of the switch component 330) 8 If the fine electric signal passes through the rectifier 410 in section (a), an audio signal with a voltage of 0V may be generated. The audio signal may correspond to a disable (DIS) signal for controlling the switch component 330 to be turned on. If the upper limit level +V dd and the pulse signal S with the lower limit level 01 In section (b), the signal S passes through the rectifier 410. 2 can be converted into a digital audio signal with a constant voltage. The constant voltage can correspond to V rec If V rec is a digital audio signal of a predetermined voltage level or higher, then V rec It may correspond to an enable (EN) signal for controlling the switch component 330 to be short-circuited.

[0091] For example, the signal S 2 It can be from time point t 2 +d 1 At time t 3 +d 1 'With V rec The voltage level of the digital audio signal. 1 or 1 ' may correspond to the delay time. The delay time may correspond to the time when the rectifier 410 converts the signal S 1 Processed into signal S 2 The time required. The delay time can be delay time. 1 and d 1 ' may be the same or may not be the same. d 1 and d 1 ' may correspond to a small value substantially close to zero. Therefore, the user may not feel the delay time.

[0092] Signal S 3 It may correspond to the output terminal P from the audio amplifier 320. 3 flows to the input terminal P of the switch component 330 4 The audio signal S 1 The digital audio signal can be provided by an audio signal processor (eg, Figure 2 The signal S input to the audio amplifier 320 is amplified by the audio signal processor 240. 1 The DAC (e.g., Figure 2 DAC 250) to convert it into an analog audio signal. 3 or 3 ' can be defined as the audio amplifier 320 converting the signal S 1 Amplify to signal S 3 The required delay time. 3 Can be with d 1 ≤d 3 The value of the relationship. 3 'Can have d 1 '≤d 3 'relationship.

[0093] may exist in segment (a) (e.g., from time point t 1 to 2 +d 3 ) may correspond to audible noise. The audible noise signal may be generated by, for example, an electrical signal generated by an element or component disposed around the audio device 300-2 and / or an electrical signal flowing through a wire surrounding the audio device 300-2. 2 +d 3 At time t 3 +d 3 The sinusoidal electrical signal in the electronic device 101 may correspond to an audio signal. The audio signal may include, for example, an analog signal output by a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The audio signal may include, for example, a digital signal output in a Class D format. For example, the audio signal may be output through the output terminal P of the audio amplifier 320. 3 is input to the switch section 330. The audio signal may have, for example, +V a and -V as the lower limit level a For ease of description, the signal S 3 The waveform of is shown as a sine wave, but is not limited thereto, and may have various amplitudes, periods, frequencies, and waveforms according to the type and kind of the audio signal.

[0094] Signal S 4 The output terminal P of the switching component 330 may correspond to 5 The sound output device 340 flows to the input terminal P 6 The audio signal may be output as a sound signal, which is an audible signal that a user may hear through the sound output member 340.

[0095] In section (a), a disable (DIS) signal for controlling the switch component 330 to turn on may be supplied from the output terminal P of the rectifier 410. 9 flows to the input terminal P of the switch component 330 8 In response to this, the switch component 330 may be opened. Thus, the audible noise generated in section (a) (eg, due to the noise generated by the S 3 Time point t 1 At time t 2 +d 3 audible noise generated by the fine electrical signals of the

[0096] In section (b), an enable (EN) signal for controlling the short circuit of the switch component 330 may be output from the output terminal P of the rectifier 410.9 flows to the input terminal P of the switch component 330 8 In response thereto, the switch component 330 may be short-circuited. Therefore, the analog audio signal converted by the audio amplifier 320 may be output as a sound signal through the sound output member 340 .

[0097] From t in section (b) 2 +d 1 +d 2 to 3 +d 1 '+d 2 ', it is possible to generate a +V a and -V as the lower limit level a The audio signal may include an analog audio signal or a digital audio signal. The audio signal may include, for example, an analog signal output through a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The audio signal may include, for example, a digital signal output in a Class D format. The audio signal may have a sine wave shape. However, the present disclosure is not limited thereto, and the audio signal may have various amplitudes, periods, frequencies, and waveforms according to the type and kind of the audio signal. 2 or 2 ' may correspond to a predetermined delay time after the switch component 330 is connected by the enable (EN) signal. The delay time may be a protection time. By setting the protection time, a popping noise may be prevented from occurring in the sound output member 340. d 2 and d 2 ' may be the same or may not be the same. d 2 and d 2 ' may correspond to a small value substantially close to zero. Therefore, the user may not feel the difference with d 1 d 1 '、d 2 and d 2 'Same amount of delay time. 2 Can be with d 1 ≤d 3 ≤d 1 +d 2 The value of the relationship. 2 'Can have d 1 '≤d 3 '≤d 1 '+d 2 'relationship.

[0098] Figure 6 2 is a diagram showing an electronic device (eg, Figure 1 Block diagram of the audio device 300-3 in the electronic device 101).

[0099] and Figure 4 The audio device 300-2 is different. Figure 6 The audio device 300-3 includes the adjustment component 610 as a separate component. Other components may be connected with Figure 4 The components of the audio device 300-2 are the same.

[0100] refer to Figure 6 The audio device 300-3 may include a processor 310-2, an audio amplifier 320, a switch component 330, a sound output member 340, a rectifier 410, or an adjustment component 610. Considering the requirements of the audio signal to be output by the rectifier 410, the size of the audio signal may be adjusted by the adjustment component 610.

[0101] The adjustment component 610 may increase or decrease the voltage of, for example, an audio signal converted by the rectifier 410. The audio signal converted by the rectifier 410 may not have a voltage level sufficient to short-circuit or open the switch component 330. The adjustment component 610 may output the increased or decreased audio signal from the output terminal P of the adjustment component 610. 11 Output to the input terminal P of the switch component 330 8 The adjustment part 610 may include a low dropout (LDO) regulator, but is not limited thereto, and may include various types of regulators.

[0102] According to an embodiment, an electrical signal may be generated in each component of the audio device 300-3. The electrical signal may include an audio signal. The audio signal may flow on wires connected between the components. The audio signal flowing from the processor 310-2 to the audio amplifier 320 may be referred to as S 1 . Flows from any point 315 on the digital interface 350 to the input terminal P of the rectifier 410 7 The audio signal can be called S 1 From the output terminal P of the rectifier 410 9 flows to the input terminal P of the adjustment component 610 10 The audio signal can be called S 2 From the output terminal P of the adjustment component 610 11 flows to the input terminal P of the switch component 330 8 The audio signal can be called S 3 From the output terminal P of the audio amplifier 320 3 flows to the input terminal P of the switch component 330 4 The audio signal can be called S 4 From the output terminal P of the switch component 330 5 The sound output device 340 flows to the input terminal P 6 The audio signal can be called S5 . refer to Figure 7 Describe the audio signal S 1 , S 2 , S 3 , S 4 and S 5 Waveform diagram of .

[0103] Figure 7 It shows the flow through Figure 6 The electrical signal S of each line of the audio device 300-3 in 1 , S 2 , S 3 , S 4 and S 5 Waveform diagram of .

[0104] exist Figure 7 In addition to the signal passing through the adjustment component (for example, Figure 6 S 3 ) and Figure 5 The waveforms are identical, and therefore the description focuses primarily on the differences.

[0105] refer to Figure 7 , signal S 1 , S 4 and S 5 Corresponding to Figure 5 The signal S 1 , S 3 and S 4 .

[0106] According to an embodiment, segment (a) may be a segment that is not processed by the processor (eg, Figure 6 310 - 2 ) to a digital interface (eg, Figure 6 For example, the segment (a) may be a segment in which the audio device 300-3 operates in an idle state. If no audio signal is input, the audio device 300-3 may operate in an idle state.

[0107] Section (b) may be a portion where there is an audio signal output by the processor 310-2 to the digital interface 350. For example, section (b) may be a portion where the audio device 300-3 operates in an active state. If there is an input audio signal, the audio device 300-3 may operate in an active state.

[0108] Signal S 2 It can be signal S 1 Passing through rectifier 410 (eg, Figure 4 rectifier 410) and output to the output terminal P of the rectifier 410 9 audio signal.

[0109] Signal S 2 It can be from the output terminal P of the rectifier 410 9 Output to the adjustment component (for example, Figure 6 The input terminal P of the adjustment component 610) 10 If the fine electric signal passes through the rectifier 410 in section (a), an audio signal with a voltage of 0V may be output. The audio signal may correspond to a disable (DIS) signal for controlling the switch component 330 to be turned on. If the upper limit level +V dd and the pulse signal S with the lower limit level 0 1 In section (b), the signal S passes through the rectifier 410. 2 can be converted into a digital audio signal with a constant voltage. The constant voltage can correspond to V rec If V rec is a digital audio signal of a predetermined voltage level or higher, then V rec The rectifier 410 may correspond to an enable (EN) signal for controlling the short-circuiting of the switch component 330. The audio signal converted by the rectifier 410 may not have a voltage level sufficient to short-circuit or disconnect the switch component 330.

[0110] Signal S 3 It can be from the output terminal P of the adjustment component 610 11 flows to the input terminal P of the switch component 330 8 The voltage of the audio signal passing through the adjustment component 610 may be raised or lowered. If the audio signal passes through the controller in section (a), an audio signal having a voltage of 0V may be generated. The audio signal may correspond to a disable (DIS) signal for controlling the switch component 330 to open. If the audio signal has a voltage level V rec The signal S 2 Passing through the regulator, the signal S 3 can be converted into an audio signal with a constant voltage. The constant voltage can correspond to V REG If V REG is an audio signal having a voltage level sufficient to short-circuit the switch component 330, then V REG The EN signal may correspond to an enable (EN) signal for controlling the switch component 330 to be short-circuited. Figure 7 Shows V rec ≤V REG , but the present disclosure is not limited thereto.

[0111] Figures 8a to 8e 2 is a diagram showing an electronic device (eg, Figure 1Layout diagram of components in an audio device 300a, 300b, 300c, 300d or 300e in an electronic device 101).

[0112] refer to Figure 8a , the audio device 300a (eg, Figure 3 The audio device 300-1 may include a processor 310a (eg, Figure 3 The rectifier 410 is provided in the processor 310a to output a switch control signal in response to the presence or absence of a digital audio signal. The processor 310a may include a signal processor 311 (e.g., Figure 2 The processor 310a including the rectifier 410 and / or the signal processor 311 may be configured as an integrated circuit. In the integrated circuit constituting the processor 310a, the input terminal P of the rectifier 410 is 7 The output terminal P of the signal processor 311 may be electrically connected to the output terminal P of the signal processor 311. 1 Due to this electrical connection, the output to the output terminal P of the signal processor 311 1 The digital audio signal can be transmitted to the input terminal P of the rectifier 410 7 .

[0113] The signal processor 311 included in the processor 310a can perform various processing on the digital audio signal. The signal processor 311 can perform, for example, sampling rate change, application of one or more filters, interpolation processing, amplification or attenuation of the entire or partial frequency band, noise processing (e.g., noise or echo attenuation), channel switching (e.g., mono-stereo switching), mixing, or designated signal extraction on one or more digital audio signals. One or more functions of the signal processor 311 can be implemented in the form of an equalizer.

[0114] The rectifier 410 included in the processor 310a can be considered to be connected to the power supply via the input terminal P 7 The input digital audio signal will be output to the output terminal P 8 The signal processor 311 of the processor 310a may be electrically connected to the audio amplifier 320.

[0115] refer to Figure 8b, the audio device 300b may include a processor 310b, an audio amplifier 320b, a switch component 330, or a sound output member 340. The audio amplifier 320b may include a signal processor 321, an amplifier 323, or a rectifier 410. The rectifier 410 and the audio amplifier 320b may be configured as an integrated circuit. The signal processor 321 may perform various processes on the digital audio signal. For example, the signal processor 321 may perform sampling rate change, application of one or more filters, interpolation processing, noise processing (e.g., noise or echo attenuation), channel switching (e.g., mono-stereo switching), mixing or specifying signal extraction on one or more digital audio signals. According to an embodiment, one or more functions of the signal processor 321 may be implemented in the form of an equalizer. The amplifier 323 may amplify or attenuate the entire or partial frequency band of the audio signal input through the signal processor 321.

[0116] The processor 310 b may be electrically connected to the signal processor 321 of the audio amplifier 320 b. The signal processor 321 may be electrically connected to the amplifier 323. The amplifier 323 may be electrically connected to the switch part 330.

[0117] Any point 315 on the audio interface 350 between the processor 310b and the audio amplifier 320b may be electrically connected to the rectifier 410. The rectifier 410 may be electrically connected to the switch component 330.

[0118] If a digital audio signal is present, the digital audio signal may be output from the output terminal P of the processor 310b. 1 Flows to the input terminal P of the signal processor 321 2 The digital audio signal input to the signal processor 321 may be transmitted to the input terminal P of the rectifier 410. 7 .

[0119] From the output terminal P of the signal processor 321 3 The output digital audio signal can be transmitted to the input terminal P of the amplifier 323. 4 The digital audio signal can pass through the amplifier 323 to amplify or attenuate the entire or partial frequency band. 5 The output digital audio signal can be transmitted to the input terminal P of the switch component 330. 6 .

[0120] refer to Figure 8c , the audio device 300c may be Figure 4The audio device 300-2 may include a processor 310c, a rectifier 410, an audio amplifier 320c, or a sound output element 340. The audio amplifier 320c may include a signal processor 321, an amplifier 323, or a switch component 330. The switch component 330 and the audio amplifier 320c may be configured as one integrated circuit.

[0121] The signal processor 321 provided in the audio amplifier 320c may be electrically connected to the amplifier 323. The amplifier 323 provided in the audio amplifier 320c may be electrically connected to the switch part 330.

[0122] refer to Figure 8d , the audio device 300d may be Figure 3 The audio device 300-1 may include a processor 310d, an audio amplifier 320d, or a sound output element 340. The processor 310d may include a first signal processor 311 or a rectifier 410. The processor 310d may correspond to Figure 8a The first signal processor 311 may correspond to Figure 8a The audio amplifier 320d may include a second signal processor 321, an amplifier 323, or a switch component 330. The audio amplifier 320d may correspond to Figure 8c The rectifier 410 and the processor 310d may be configured as one integrated circuit. The switch component 330 and the audio amplifier 320d may be configured as one integrated circuit.

[0123] The first signal processor 311 of the processor 310d may be electrically connected to the second signal processor 321 of the audio amplifier 320d.

[0124] If there is a digital audio signal, it can be output from the output terminal P of the first signal processor 311. 1 The output digital audio signal is input to the input terminal P of the second signal processor 321. 2 .

[0125] refer to Figure 8e , the audio device 300e may be Figure 4 The audio device 300e may include a processor 310e, an audio amplifier 320e, or a sound output element 340. The audio amplifier 320e may include a signal processor 321, an amplifier 323, a switch component 330, or a rectifier 410. The audio amplifier 320e, the rectifier 410, or the switch component 330 may be configured as one integrated circuit.

[0126] Figure 9aIt is shown that the Figure 8a 1 is a block diagram of an audio amplifier 320a in an audio device 300a.

[0127] refer to Figure 9a , the audio amplifier 320a may include a digital audio interface 3201, a digital microphone (DMIC) interface 3202, a digital signal processing (DSP) core 3203, a pulse density modulation (PDM) interface 3204, a digital-to-analog (DAC) converter 3205, an amplifier 3206, or a microphone boost and mixer 3207. However, the present disclosure is not limited thereto, and may include various components.

[0128] According to an embodiment, the processor 310 and the audio amplifier 320a may be electrically connected. The audio amplifier 320a and the switch component 330 may be electrically connected to each other. The processor 310 and the digital audio interface 3201 may be electrically connected. The digital audio interface 3201 and the digital signal processing core 3203 may be electrically connected. The digital microphone interface 3202 and the digital signal processing core 3203 may be electrically connected to each other. The digital signal processing core 3203 and the PDM interface 3204 may be electrically connected to each other. The digital signal processing core 3203 and the DAC converter 3205 may be electrically connected to each other. The digital signal processing core 3203 and the microphone boost and mixer 3207 may be electrically connected. The DAC converter 3205 and the amplifier 3206 may be electrically connected to each other. The amplifier 3206 and the switch component 330 may be electrically connected to each other. However, the present disclosure is not limited thereto, and various combinations of electrical connections between the components constituting the audio amplifier 320a are possible.

[0129] The digital audio interface 3201 may correspond in whole or in part to Figure 2 The digital audio interface 3201 can be connected via a connection terminal (eg, Figure 1 The connection terminal 178 is directly connected to an external electronic device (for example, Figure 1 electronic device 102) or via a wireless communication module (e.g., Figure 1 The wireless communication module 192 of the present invention is wirelessly connected (for example, Bluetooth communication) to an external electronic device (for example, Figure 1The audio interface 3201 may include a plurality of audio input channels, and may receive different audio signals for each corresponding audio input channel among the plurality of audio input channels. According to an embodiment, additionally or alternatively, the audio interface 3201 may receive an audio signal from another component of the electronic device 101 (e.g., the processor 310 or a memory).

[0130] The digital microphone interface 3202 and the digital microphone can be connected, and the sound converted by the digital microphone in a pulse code modulation (PCM) method can be received and transmitted to the DSP core 3203.

[0131] The digital signal processing core 3203 may correspond in whole or in part to Figure 2 The audio signal processor 240 of the electronic device 101. The digital signal processing core 3203 can perform various processing on the digital audio signal or the digital audio signal received from another component of the electronic device 101. In an embodiment, the audio signal processor 240 can perform one or more filter applications, interpolation processing, amplification or attenuation of the entire or partial frequency band, noise processing (e.g., noise or echo attenuation), channel switching (e.g., mono-stereo switching), mixing or specified signal extraction. Depending on the embodiment, one or more functions of the audio signal processor 3203 can be implemented in the form of an equalizer.

[0132] The PDM interface 3204 may change the sampling rate of one or more digital audio signals.

[0133] DAC converter 3205 may correspond in whole or in part to Figure 2 DAC 250. DAC converter 3205 may convert a digital audio signal into an analog audio signal. In an embodiment, DAC converter 3205 may convert a digital audio signal processed by audio signal processor 240 or a digital audio signal obtained from another component of electronic device 101 (e.g., processor 310 or memory) into an analog audio signal.

[0134] Amplifier 3206 may correspond to Figures 8a to 8e The amplifier 3206 may amplify the analog signal converted by the DAC converter 3205. The amplifier 3206 may amplify the converted analog signal by increasing the amplitude.

[0135] Microphone boost and mixer 3207 may correspond in whole or in part to Figure 2 Audio input mixer 220 or Figure 2 The audio output mixer 260 of the present invention can be configured to output the audio signal of the present invention to the audio output mixer 260. The microphone boost and mixer 3207 can amplify the audio signal input through the microphone. The microphone boost and mixer 3207 can synthesize multiple input audio signals into at least one audio signal. In an embodiment, the converted analog audio signal and another analog audio signal (for example, an analog audio signal received through the audio input interface 210) can be synthesized into at least one analog audio signal.

[0136] exist Figure 9b to Figure 9d In the embodiment, the components constituting the audio amplifier 320 and the connection relationship between the components are the same as those in the embodiment of the present invention except for some parts. Figure 9a of those are the same, and therefore, the description focuses mainly on the differences.

[0137] Figure 9b It is shown that the Figure 8b 1 is a block diagram of an audio amplifier 320b in an audio device 300b.

[0138] refer to Figure 9b , the audio amplifier 320b may include a digital audio interface 3201, a digital microphone interface (DMIC) 3202, a digital signal processing core 3203 (DSP core), a pulse density modulation (PDM) interface 3204, a DAC converter 3205, an amplifier 3206, a microphone boost and mixer 3207, or a rectifier 410. The audio amplifier 320b and the rectifier 410 may be configured as one integrated circuit.

[0139] The digital audio interface 3201 and the rectifier 410 may be electrically connected to each other. The rectifier 410 and the switch part 330 may be electrically connected to each other.

[0140] Fig.9c It is shown that the Figure 8c The audio device 300c or Figure 8d The audio amplifier 320c (eg, Figure 8c Audio amplifier 320c or Figure 8d Block diagram of an audio amplifier 320d).

[0141] refer to Fig.9c , the audio amplifier 320c may include a digital audio interface 3201, a digital microphone interface (DMIC) 3202, a digital signal processing core 3203 (DSP core), a pulse density modulation (PDM) interface 3204, a DAC converter 3205, an amplifier 3206, a microphone boost and mixer 3207, or a switch component 330. The audio amplifier 320c and the switch component 330 may be configured as one integrated circuit.

[0142] The amplifier 3206 and the switch component 330 may be electrically connected to each other. The switch component 330 and the sound output member 340 may be electrically connected. The rectifier 410 and the switch component 330 may be electrically connected to each other.

[0143] Figure 9d It is shown that the Figure 8e 1 is a block diagram of an audio amplifier 320e in an audio device 300e.

[0144] refer to Figure 9d , the audio amplifier 320e may include a digital audio interface 3201, a digital microphone interface (DMIC) 3202, a digital signal processing core 3203 (DSP core), a pulse density modulation (PDM) interface 3204, a DAC converter 3205, an amplifier 3206, a microphone boost and mixer 3207, a rectifier 410 or a switch component 330. The audio amplifier 320e, the rectifier 410 or the switch component 330 may be configured as one integrated circuit.

[0145] The digital audio interface 3201 and the rectifier 410 may be electrically connected to each other. The rectifier 410 and the switch part 330 may be electrically connected to each other.

[0146] In addition to reference Figures 9a to 9d The audio amplifiers 320a, 320b, 320c, and 320e may include various components in addition to the components described. In addition, the audio amplifiers 320a, 320b, 320c, and 320e may have various other electrical connections in addition to the suggested connections.

[0147] Fig.10 It is shown that the Figures 8a to 8e Rectifier in audio device (for example, Figures 8a to 8e 410).

[0148] refer to Fig.10 , the rectifier 410 can be configured as a low pass filter. However, the present disclosure is not limited thereto, and various types of filter circuits may be included. For example, the rectifier 410 may be configured by a combination of various passive elements (e.g., resistors, capacitors, and inductors) other than the circuit shown.

[0149] According to an embodiment, the rectifier 410 may include a diode 4101, a resistor 4103, a capacitor 4105, or a plurality of terminals. The plurality of terminals may include, for example, an input terminal P of the rectifier 410. a , the output terminal P of the rectifier 410 b Or the ground terminal 4107 of the rectifier 410.

[0150] The diode 4101 can be connected to the input terminal P aand output terminal P b The anode of the diode 4101 can be electrically connected to the input terminal P a The cathode of diode 4101 can be electrically connected to the output terminal P b .

[0151] The resistor 4103 may be connected between the output terminal (eg, cathode) of the diode 4101 and the output terminal P of the rectifier 410. b Connect in series.

[0152] Capacitor 4105 can be connected to the output terminal P of diode 4101. b The rectifier 410 can rectify the signal obtained on the digital interface 350. The rectifier 410 can output the DC voltage obtained by rectification as a switch control signal EN (e.g., a short-circuit (closed, connected or turned on) signal) to control the switch component (e.g., Figures 8a to 8e For example, the digital interface 350 may be a switch that connects a signal processor (e.g., Figure 8a The signal transmission path electrically connects the signal processor 311 of the signal processor 311 and the audio amplifier 320. For example, the digital interface 350 can be a signal transmission path that electrically connects the processor (for example, Figure 8b processor 310b, Figure 8c The processor 310c or Figure 8e processor 310e) and a signal processor (e.g., Figure 8a , Figure 8c or Figure 8e For example, the digital interface 350 may be a signal transmission path that is electrically connected to the signal processor 321 of the processor (eg, Figure 8d A signal processor (eg, Figure 8d The signal processor 311) and the signal processor included in the audio amplifier 320d (eg, Figure 8d The signal transmission path electrically connected to the signal processor 321).

[0153] For example, in the case where the digital audio signal is not transmitted by a processor (e.g. Figures 8a to 8e d or 310e) to a section of the digital interface 350 (eg, Figure 5 Section (a) or Figure 7 In section (a)), since there is only a signal corresponding to audible noise and no voltage is actually to be rectified, the rectifier 410 may output a low-level switch control signal (DIS) (eg, open, disconnect, or cut off).

[0154] For example, in the case where a digital audio signal is transmitted by a processor (e.g. Figures 8a to 8e d or 310e) to a section of the digital interface 350 (eg, Figure 5 (b) or Figure 7 In the section (b) of FIG. 3 , the rectifier 410 can obtain the digital audio signal at any point of the digital interface 350. The digital audio signal obtained on the digital interface 350 can be a pulse electrical signal. The rectifier 410 can convert the digital audio signal into a DC voltage having a predetermined level through the charging / discharging operation of the internal capacitor 4105. The DC voltage can be used as, for example, a switch control signal EN (e.g., a short-circuit (closed, connected or turned on) signal) to control the switch component (e.g., Figures 8a to 8e Switching operation of the switching component 330).

[0155] Fig.11 It is shown that the Figures 8a to 8e Audio devices (e.g. Figures 8a to 8e The switch component (eg, Figures 8a to 8e A circuit diagram of the switch component 330).

[0156] refer to Fig.11 The switch component 330 may include a switch element 3310, a diode 3320, or a plurality of terminals. For example, the plurality of terminals may include at least one input terminal P c , at least one output terminal P d Or at least one control terminal P e .

[0157] The diode 3320 may be configured to connect at least one input terminal P in a forward direction. c and at least one output terminal P d .

[0158] A field effect transistor (FET) may be used as the switching element 3310. In an embodiment, the FET used as the switching element 3310 may be a metal oxide semiconductor field effect transistor (MOSFET). However, the present disclosure is not limited thereto, and various types of electronic components that are switched by external control may be used as the switching element 3310. The MOSFET used as the switching element 3310 may include a source terminal 3303, a gate terminal 3305, or a drain terminal 3307. The source terminal 3303 may correspond to an input terminal P of the switching component 330. c The gate terminal 3305 may correspond to the control terminal P of the switch component 330. e The drain terminal 3307 may correspond to the output terminal P of the switch component 330.d .

[0159] At least one input terminal P c (e.g., source terminal 3303 of the MOSFET) can be connected to an audio amplifier (e.g., Figure 3 , Figure 4 or Figure 6 The audio signal amplified by the audio amplifier 320 may be input to at least one input terminal P c The audio signal amplified by the audio amplifier 320 may be transmitted to an input terminal of the switching element 3310 (eg, a source terminal 3303 of the MOSFET).

[0160] A switching control signal for controlling the switching operation of the switch component 330 may be input to at least one control terminal P e (eg, gate terminal 3305 of a MOSFET). In an embodiment, at least one control terminal P e can be connected to a processor (e.g. Figure 3 The switch control signal output by the processor 310-1 can be input to at least one control terminal P e In an embodiment, at least one control terminal P e can be connected to a rectifier (e.g. Figure 4 The switch control signal output by the rectifier 410 can be input to at least one control terminal P e In an embodiment, at least one control terminal P e can be connected to an adjustment component (e.g. Figure 6 The switch control signal output by the adjustment component 610 can be input to at least one control terminal P e The switch control signal can control the switching operation of the switch element 3310 .

[0161] At least one output terminal P d (e.g., the drain terminal 3307 of the MOSFET) can be connected to an audio output (e.g., Figure 3 , Figure 4 or Figure 6 The sound output element 340) is outputted by the switch component 330 to at least one output terminal P d The audio signal can be transmitted as input to the sound output component 340.

[0162] In the embodiment, the control terminal P of the switch component 330 is inputted. eThe switch control signal of the switch component 330 (e.g., the gate terminal 3305 of the MOSFET) may be one of an enable (EN) signal or a disable (DIS) signal. The enable (EN) signal may have a voltage greater than or equal to a predetermined voltage level. If the enable (EN) signal is input to the control terminal P of the switch component 330, e (e.g., gate terminal 3305 of MOSFET), the switch element 3310 may be turned on. If the switch element 3310 is turned on, an electrical path (channel) may be formed between the input terminal (e.g., source terminal 3303 of MOSFET) and the output terminal (e.g., drain terminal 3307 of MOSFET) of the switch element 3310. An electrical signal may flow through the channel. This state may be referred to as a short-circuit state of the switch component 330. The disable (DIS) signal may have a voltage lower than a predetermined voltage level. If the disable (DIS) signal is input to the control terminal P of the switch component 330, the control terminal P of the switch component 330 may be turned on. e (e.g., gate terminal 3305 of MOSFET), the switch element 3310 may be cut off. If the switch element 3310 is cut off, an electrical path (channel) may not be formed between the input terminal (e.g., source terminal 3303 of MOSFET) and the output terminal (e.g., drain terminal 3307 of MOSFET) of the switch element 3310. This state may be referred to as an open state of the switch component 330.

[0163] Fig.12 2 is a diagram showing an electronic device (eg, Figure 1 Block diagram of the audio device 300-4 in the electronic device 101).

[0164] refer to Fig.12 , the audio device 300-4 may include a processor 310-4, a plurality of audio amplifiers 320-4a and 320-4b, a plurality of switch components 330-4a and 330-4b, a plurality of sound output components 340-4a, 340-4b, and 340-4c, or a rectifier 410. The plurality of audio amplifiers 320-4a and 320-4b may include, for example, a first audio amplifier 320-4a or a second audio amplifier 320-4b. The plurality of switch components 330-4a and 330-4b may include a first switch component 330-4a or a second switch component 330-4b. The plurality of sound output components 340-4a, 340-4b, and 340-4c may include a first sound output component 340-4a, a second sound output component 340-4b, or a third sound output component 340-4c. The first sound output component 340-4a may correspond to, for example, an electronic device (e.g., Figure 1The second sound output element 340-4b may correspond to, for example, a lower speaker of the electronic device 101. For example, the third sound output element 340-4c may be a USB terminal (eg, Figure 1 The connection terminal 178 of the third sound output member 340-4c may include various types of sound output devices (eg, earphones, headphones, and speakers). However, the sound output device is not limited thereto and may include various types of sound output devices.

[0165] The output terminal P of the processor 310-4 1 The first audio amplifier 320-4a may be electrically connected to an input terminal P 2 The output terminal P of the first audio amplifier 320-4a is 3 The input terminal P of the first switch component 330-4a may be electrically connected to the input terminal P 4 The output terminal P of the first switch component 330-4a is 5 The first sound output member 340-4a may be electrically connected to the input terminal P 6 The output terminal P of the processor 310-4 16 The input terminal P of the third sound output member 340-4c may be electrically connected to the input terminal P of the third sound output member 340-4c. 17 .

[0166] The input terminal P of the second audio amplifier 320-4b 7 The output terminal P of the second audio amplifier 320-4b may be electrically connected to any point on the digital interface 350 that electrically connects the processor 310-4 and the first audio amplifier 320-4a. 8 The input terminal P of the second switch component 330-4b may be electrically connected to the input terminal P 9 The output terminal P of the second switch component 330-4b is 10 The input terminal P of the second sound output member 340b may be electrically connected to the 11 .

[0167] The input terminal P of the rectifier 410 12 The output terminal P of the rectifier 410 may be electrically connected to any point on the digital interface 350 that electrically connects the processor 310-4 and the first audio amplifier 320-4a. 13 The first switch component 330-4a may be electrically connected to the input terminal P 14 and the input terminal P of the second switch component 330-4b. 15 Any point 420 of the line that is electrically connected.

[0168] The processor 310-4 may output the digital audio signal to the digital interface 350. The digital audio signal output from the processor 310-4 and flowing on the digital interface 350 may be a digital interface signal.

[0169] If the digital audio signal is outputted by the processor 310-4 to the output terminal P 1 , the digital audio signal can flow through the output terminal P of the processor 310-4 1 and the input terminal P of the first audio amplifier 320-4a. 2 The digital audio signal flowing on the digital interface 350 can also be transmitted to the input terminal P of the rectifier 410. 12 .

[0170] The rectifier 410 can output a switch control signal through the digital interface 350 by the digital audio signal output from the processor 310-4. For example, if there is a digital audio signal flowing through the digital interface 350, the rectifier 410 can output a switch control signal (enable (EN)) for short-circuiting the first switch component 330-4a and / or the second switch component 330-4b. The short circuit of the first switch component 330-4a electrically connects the first audio amplifier 320-4a and the first sound output member 340-4a. The short circuit of the second switch component 330-4b electrically connects the second audio amplifier 320-4b and the second sound output member 340-4b. For example, if there is no digital audio signal flowing through the digital interface 350, the rectifier 410 can output a switch control signal (DIS) for opening the first switch component 330-4a and / or the second switch component 330-4b. The opening of the first switch component 330-4a electrically cuts off the first audio amplifier 320-4a and the first sound output element 340-4a. The opening of the second switch component 330-4b electrically cuts off the second audio amplifier 320-4b and the second sound output element 340-4b.

[0171] The digital audio signal output from the processor 310-4 and flowing on the digital interface 350 may be transmitted to the input terminal P of the first audio amplifier 320-4a. 2 and / or the input terminal P of the second audio amplifier 320-4b 7 .

[0172] The digital audio signal transmitted from the processor 310-4 through the digital interface 350 may be amplified by the first audio amplifier 320-4a and / or the second audio amplifier 320-4b, or may be converted into an analog audio signal and then amplified. For example, the first audio amplifier 320-4a or the second audio amplifier 320-4b may amplify or attenuate the digital audio signal in the entire or partial frequency band.

[0173] Output to the output terminal P of the first audio amplifier 320-4a 3 The audio signal can be transmitted to the input terminal P of the first switch component 330-4a. 4 . Transmitted to the input terminal P of the first switch component 330-4a 4 The audio signal can be output to the output terminal P through the switching operation of the first switch 330-4a. 5 . Output to the output terminal P of the first switch 330-4a 5 The audio signal can be transmitted to the input terminal P of the first sound output member 340-4a. 6 The audio signal input to the first sound output member 340 - 4 a may be an analog signal and output as a sound signal.

[0174] Output to the output terminal P of the second audio amplifier 320-4b 8 The audio signal can be transmitted to the input terminal P of the second switch component 330-4b. 9 . Transmitted to the input terminal P of the second switch component 330-4b 9 The audio signal can be output to the output terminal P through the switching operation of the second switch component 330-4b. 10 . Output to the output terminal P of the second switch component 330-4b 10 The audio signal can be transmitted to the input terminal P of the second sound output member 340-4b. 11 The audio signal input to the second sound output member 340 - 4 b is an analog signal and may be output as a sound signal.

[0175] Although not shown, the processor 310-4 may further include a switch element. The processor 310-4 may detect whether the sound output device is electrically connected to the third sound output member 340-4c. If the sound output device is electrically connected to the third sound output member 340-4c, the processor 310-4 may control the switch element to output the sound signal only to the third sound output member 340-4c, to which the sound output device is electrically connected.

[0176] In an embodiment, if the sound output device is electrically connected to the third sound output member 340-4c, the processor 310-4 may output the audio signal to the output terminal P 16 The audio signal output by the processor 310-4 can be output from the output terminal P 16 The signal is transmitted to the input terminal P of the third sound output element 340-4c. 17 The audio signal may include, for example, a digital signal. The audio signal may be output as a sound signal by, for example, a sound output device (eg, earphone) connected to the third sound output member 340 - 4 c .

[0177] Fig.13 2 is a diagram showing an electronic device (eg, Figure 1 Block diagram of the audio device 300-5 in the electronic device 101).

[0178] refer to Fig.13 The audio device 300-5 may include a processor 310-5, a plurality of audio amplifiers 320-5a and 320-5c, a plurality of switch components 330-5a, 330-5b and 330-5c, a plurality of rectifiers 410-5a and 410-5c, a signal distributor 510 or a plurality of sound output elements 340-5a, 340-5b, 340-5c and 340-5d.

[0179] The plurality of audio amplifiers 320-5a and 320-5c may include a first audio amplifier 320-5a or a second audio amplifier 320-5c. The first audio amplifier 320-5a may include a switching element 329-5a.

[0180] The plurality of switch components 330-5a, 330-5b, and 330-5c may include a first switch component 330-5a, a second switch component 330-5b, or a third switch component 330-5c. The plurality of rectifiers 410-5a and 410-5c may include a first rectifier 410-5a or a second rectifier 410-5c.

[0181] The plurality of sound output elements 340-5a, 340-5b, 340-5c, and 340-5d may include a first sound output element 340-5a, a second sound output element 340-5b, a third sound output element 340-5c, or a fourth sound output element 340-5d. For example, the first sound output element 340-5a may be an electronic device (e.g., Figure 1 For example, the second sound output member 340-5b may be a 3.5 mm headphone plug-in terminal ( Figure 1 , connection terminal 178). A cable connecting an audio device (such as earphones, headphones, or speakers) can be connected to the second audio output element 340-5b. For example, the third audio output element 340-5c can be a lower speaker. For example, the fourth audio output element 340-5d can be a USB terminal (for example, Figure 1 The fourth sound output member 340-5d may include a connection terminal 178 of the speaker. Various types of sound devices (eg, earphones, headphones, and speakers) may be connected to the fourth sound output member 340-5d. However, the plurality of sound devices are not limited thereto, and may include various types of sound devices.

[0182] The output terminal P of the processor 310-5 1 The first audio amplifier 320-5a may be electrically connected to an input terminal P 2 or the input terminal P of the first rectifier 410-5a 11 The output terminal P of the processor 310-5 is 1 The first audio amplifier 320-5a is electrically connected to the input terminal P 2 or the input terminal P of the first rectifier 410-5a 11 The digital interface 350 may branch at any point 315 - 5 a .

[0183] The output terminal P of the processor 310-5 18 The input terminal P of the second audio amplifier 320-5c may be electrically connected to 19 or the input terminal P of the second rectifier 410-5c 24 The output terminal P of the processor 310-5 is 18 The input terminal P of the second audio amplifier 320-5c is electrically connected to the 19 or the input terminal P of the second rectifier 410-5c 24 The digital interface can branch at any point 315-5c.

[0184] The output terminal P of the processor 310-5 27 The input terminal P of the fourth sound output member 340-5d may be electrically connected to the input terminal P of the fourth sound output member 340-5d. 28 The output terminal P of the processor 310-5 29 The input terminal P of the signal distributor 510 may be electrically connected to the input terminal P of the signal distributor 510. 30 Optionally, the output terminal P of the audio amplifier 320-5a may be 31 The input terminal P of the signal distributor 510 may be electrically connected to the input terminal P of the signal distributor 510. 30 .

[0185] The output terminal P of the first audio amplifier 320-5a 3 The input terminal P of the first switch component 330-5a may be electrically connected to the input terminal P 4 The output terminal P of the first audio amplifier 320-5a is 7 The input terminal P of the second switch component 330-5b may be electrically connected to the input terminal P 8 .

[0186] The output terminal P of the first switch component 330-5a 5 The first sound output member 340-5a may be electrically connected to the input terminal P 6 The control terminal P of the first switch component 330-5a is 15The output terminal P of the signal distributor 510 may be electrically connected to the output terminal P of the signal distributor 510. 14 .

[0187] The output terminal P of the second switch component 330-5b 9 The input terminal P of the second sound output member 340-5b may be electrically connected to the input terminal P of the second sound output member 340-5b. 10 The control terminal P of the second switch component 330-5b 17 The output terminal P of the signal distributor 510 may be electrically connected to the output terminal P of the signal distributor 510. 16 .

[0188] The output terminal P of the first rectifier 410-5a 12 The input terminal P of the signal distributor 510 may be electrically connected to the input terminal P of the signal distributor 510. 13 .

[0189] The output terminal P of the second audio amplifier 320-5c 20 The input terminal P of the third switch component 330-5c may be electrically connected to the input terminal P 21 The output terminal P of the third switch component 330-5c is 22 The input terminal P of the third sound output member 340-5c may be electrically connected to the input terminal P of the third sound output member 340-5c. 23 The control terminal P of the third switch component 330-5c is 26 The output terminal P of the second rectifier 410-5c may be electrically connected to 25 .

[0190] According to an embodiment, an electrical signal may be generated in each component of the audio device 300-5. The electrical signal may include an audio signal or a switch control signal. For example, the first electrical signal S 1 It can be the output terminal P from the processor 310-5 1 The first audio amplifier 320-5a receives the input terminal P 2 or transmitted to the input terminal P of the first rectifier 410-5a. 11 For example, the second electrical signal S 2 It can be from the output terminal P of the first rectifier 410-5a 12 transmitted to the input terminal P of the signal distributor 510 13 For example, the third electrical signal S 3 It can be the output terminal P from the signal distributor 510 14 transmitted to the control terminal P of the first switch component 330-5a 15 For example, the fourth electrical signal S 4 It can be the output terminal P from the signal distributor 510 16 transmitted to the control terminal P of the second switch component 330-5b 17For example, the fifth electrical signal S 5 It can be the output terminal P of the first audio amplifier 320-5a. 3 transmitted to the input terminal P of the first switch component 330-5a. 4 For example, the sixth electrical signal S 6 It can be the output terminal P of the first audio amplifier 320-5a. 7 transmitted to the input terminal P of the second switch component 330-5b. 8 For example, the seventh electrical signal S 7 It can be from the output terminal P of the first switch component 330-5a. 5 The signal is transmitted to the input terminal P of the first sound output element 340-5a. 6 For example, the eighth electrical signal S 8 It can be from the output terminal P of the second switch component 330-5b. 9 The signal is transmitted to the input terminal P of the second sound output element 340-5b. 10 The audio signal. Fig.14 Describe the first to eighth electrical signals S 1 , S 2 , S 3 , S 4 , S 5 , S 6 , S 7 and S 8 Waveform diagram. In the first electrical signal to the eighth electrical signal S 1 , S 2 , S 3 , S 4 , S 5 , S 6 , S 7 and S 8 Among them, the first electrical signal S 1 and the second electrical signal S 2 and the fifth to eighth electrical signals S 5 , S 6 , S 7 and S 8 may be an audio signal, and the third electrical signal S 3 and the fourth electrical signal S 4 Although not shown, the audio signal flowing between the processor 310-5 and the third sound output member 340-5c may correspond to Figure 5 Waveform diagram of .

[0191] According to an embodiment, the processor 310-5 may output the digital audio signal to the output terminal P 1. Output to the output terminal P of the processor 310-5 1 The digital audio signal can be input to the input terminal P of the first audio amplifier 320-5a through the digital interface 350-5a. 2 .

[0192] Output to the output terminal P of the processor 310-5 1 The digital audio signal can be branched at any point 315-5a on the digital interface 350-5a and input to the input terminal P of the first rectifier 410-5a. 11 The first audio amplifier 320-5a can be connected to the input terminal P 2 The input digital audio signal is converted into an analog audio signal. The first audio amplifier 320-5a can amplify or attenuate the entire or partial frequency band of the converted analog audio signal.

[0193] The first audio amplifier 320-5a can be connected to the input terminal P 2 The input digital audio signal performs signal processing such as signal conversion, amplification or attenuation, and outputs the signal to the output terminal P 3 . Output to the output terminal P of the first audio amplifier 320-5a 3 The audio signal can be input to the input terminal P of the first switch component 330-5a. 4 The first switch component 330-5a can respond to the input to the control terminal P 15 The first switch control signal is input to the input terminal P 4 The audio signal is output to the output terminal P 5 For example, the first switch control signal can be transmitted through the output terminal P of the signal distributor 510. 14 output, and then transmitted to the control terminal P of the first switch component 330-5a. 15 . Output to the output terminal P of the first switch component 330-5a 5 The audio signal can be input to the input terminal P of the first sound output member 340-5a. 6 The first sound output element 340-5a can be input to the input terminal P 6 The audio signal is output as a sound signal.

[0194] The first audio amplifier 320-5a may output an audio signal on which signal processing such as signal conversion, amplification, or attenuation is performed to the output terminal P. 7 . Output to the output terminal P of the first audio amplifier 320-5a 7 The audio signal can be input to the input terminal P of the second switch component 330-5b. 8The second switch component 330-5b can respond to the input to the control terminal P 17 The second switch control signal is input to the input terminal P 8 The audio signal is output to the output terminal P 9 For example, the second switch control signal can be transmitted through the output terminal P of the signal distributor 510. 16 output, and then transmitted to the control terminal P of the second switch component 330-5b 17 . Output to the output terminal P of the second switch component 330-5b 9 The audio signal can be input to the input terminal P of the second sound output member 340-5b. 10 The second sound output element 340-5b can be input to the input terminal P 10 The audio signal is output as a sound signal.

[0195] In an embodiment, the first audio amplifier 320-5a may include a circuit for adaptively selecting the output terminal P 3 or P 7 The switch element 329-5a of the first audio amplifier 320-5a can output the digital audio signal to the output terminal P according to whether the sound device is electrically connected to the second sound output element 340-5b. 3 Or output to output terminal P 7 For example, if the sound device is not electrically connected to the second sound output member 340-5b, the switch element 329-5a of the first audio amplifier 320-5a may output the digital audio signal to the output terminal P 3 For example, if the sound device is electrically connected to the second sound output member 340-5b, the switch element 329-5a of the first audio amplifier 320-5a may output the digital audio signal to the output terminal P 7 .

[0196] The first rectifier 410-5a can be connected to the input terminal P 11The input digital audio signal is rectified to output a switch control signal, which is a DC component with a predetermined voltage level. The switch control signal may include, for example, a high level section (e.g., an on operation section) or a low level section (e.g., an off operation section). In an embodiment, if there is a digital audio signal to be output from the processor 310-5, the first rectifier 410-5a may output a switch control signal (enable (EN)) for short-circuiting the first switch component 330-5a or the second switch component 330-5b. For example, if there is no digital audio signal, the first rectifier 410-5a may output a switch control signal (disable (DIS)) for disconnecting the first switch component 330-5a or the second switch component 330-5b.

[0197] The first rectifier 410-5a can be connected to the output terminal P 12 The output switch control signal is output through the output terminal P of the first rectifier 410-5a. 12 The output switch control signal can be input to the input terminal P of the signal distributor 510. 13 Through the output terminal P of the processor 310-5 29 The output identification signal can be input to the input terminal P of the signal distributor 510 30 Optionally, the identification signal may be transmitted through the output terminal P of the audio amplifier 320-5a. 31 The signal is input to the input terminal P of the signal distributor 510. 30 The identification signal may be an indication of whether a sound device (eg, headphones) is connected to the second sound output member 340-5b (eg, Figure 1 For example, the identification signal may be one of a low level voltage indicating that the sound device is connected to the second sound output member 340-5b or a high level voltage indicating that the sound device is not connected to the second sound output member 340-5b.

[0198] The signal distributor 510 can use the input to the input terminal P 13 The switch control signal I 2 and input to the input terminal P 30 Identification signal I 1 To output the first switch control signal SW#1 and the second switch control signal SW#2. For example, the signal distributor 510 can output the first switch control signal SW#1 to the output terminal P 14 , and the second switch control signal SW#2 may be output to the output terminal P16. In an embodiment, the first switch control signal SW#1 may be input to the input terminal P 13 The second switch control signal SW#2 may be an inverted signal of the switch control signal input to the input terminal P13 The switch control signal.

[0199] According to an embodiment, the signal distributor 510 may be configured as a logic circuit block. The signal distributor 510 may be designed by, for example, two logic gates. For example, the signal distributor 510 may be configured by connecting the input of an inverter (a NOT logic operator or an INV logic operator) 513 in series to the output terminal of an XOR 511. However, the present disclosure is not limited thereto, and the signal distributor 510 may be configured by combining various logic gates. The switch control signal I 2 The first input terminal (eg, input terminal P) of the XOR gate XOR 511 may be input. 13 ). Identification signal I 1 The second input terminal (eg, input terminal P) of the XOR gate XOR511 may be input. 30 ).

[0200] In an embodiment, if the switch control signal I 2 and identification signal I 1 have the same value (eg, high level or low level), the XOR gate XOR 511 may output a low-level switch control signal (eg, the second switch control signal SW#2). 2 and identification signal I 1 When the digital audio signal has different values ​​(e.g., high level and low level or low level and high level), the XOR gate XOR 511 can output a high-level switch control signal (e.g., the second switch control signal SW#2). When there is an output of a digital audio signal, the processor 310-5 can output, for example, a high-level switch control signal I 2 When there is no digital audio signal output, the processor 310-5 may output, for example, a low-level switch control signal I 2 When the sound device is connected to the second sound output element 340-5b, the processor 310-5 may output, for example, a low-level identification signal I 1 When the sound device is not connected to the second sound output element 340-5b, the processor 310-5 may output, for example, a high-level identification signal I 1 .

[0201] In an embodiment, the inverter (NOT logic operator) 513 can output a switch control signal (e.g., the first switch control signal SW#1) that is inverted from the switch control signal (e.g., the second switch control signal SW#2) output by the exclusive OR gate (exclusive OR (XOR) logic operator) 511.

[0202] Table 1 below is a table showing a condition table according to the operation of the signal distributor 510 .

[0203] [Table 1]

[0204]

[0205]

[0206] In Table 1, “Is the headset connected (I 1 )" may be based on detecting whether a sound output device (eg, earphones) is connected to the second sound output element 340-5b (eg, Figure 1 For example, if "Is the headset connected (I 1 )” is a high signal H, it can indicate that the earphone is not connected to the second sound output member 340-5b. 1 )” is a low signal L, it can indicate the state that the earphone is connected to the second sound output element 340-5b.

[0207] In Table 1, “Whether to input the EN signal to P 13 Terminal(I 2 )" may be a signal according to whether the enable (EN) signal is output to the output terminal P of the first rectifier 410-5a. 12 and input to the input terminal P of the signal distributor 510 13 When a digital audio signal is present, an enable (EN) signal may be generated. For example, if “whether the EN signal is output to P 13 Terminal(I 2 )” is H, the enable (EN) signal can be output to the output terminal P of the first rectifier 410a. 12 and input to the input terminal P of the signal distributor 510 13 If "whether to output EN signal to P 13 Terminal(I 2 )" is L, then it can be connected to the output terminal P of the first rectifier 410a. 12 and input to the input terminal P of the signal distributor 510 13 The disable (DIS) signal corresponds to the

[0208] If the "Is the headset connected" signal I 1 and “whether to output the EN signal to P 13 Terminal" signal I 2 Passing through XOR gate 511, whether to output the EN signal to P 16 Terminal (SW#2)" can be output to the output terminal P of the signal distributor 510 16 If "whether to output EN signal to P 16If the output of terminal (SW#2) is an H signal, the enable (EN) signal can be output to the output terminal P of the signal distributor 510. 16 If "whether to output EN signal to P 16 If the output of terminal (SW#2) is an L signal, the disable (DIS) signal can be output to the output terminal P of the signal distributor 510. 16 .

[0209] If the "Is the headset connected" signal I 1 and “whether to output the EN signal to P 12 Terminal" signal I 2 The signal passes through the exclusive OR (XOR) gate 511, and the signal passes through the inverting (INV) gate 513, then "whether the EN signal is output to P 14 Terminal (SW#1)" can be output to the output terminal P of the signal distributor 510 14 . Output to output terminal P 14 The signal SW#1 may be relative to the output terminal P 16 For example, if the H signal is output to the output terminal P 16 , then the L signal can be output to the output terminal P 14 If the L signal is output to the output terminal P 16 , then the H signal can be output to the output terminal P 14 For example, if "whether to output the EN signal to P 16 If the “EN signal is output to the P terminal (SW#2)” is an H signal, the enable (EN) signal can be output to the second output terminal of the signal distributor 510. 16 If the output of terminal (SW#2) is L signal, the disable (DIS) signal can be output to P 16 terminal.

[0210] Output to the output terminal P of the signal distributor 510 14 The enable (EN) signal may be input to the input terminal P of the first switch component 330-5a. 15 The enable (EN) signal can control the first switch 330-5a to be short-circuited. The output terminal P of the signal distributor 510 is output to the output terminal P of the signal distributor 510. 14 The disable (DIS) signal may be input to the input terminal P of the first switch component 330-5a. 15 The disable (DIS) signal may control the first switch component 330-5a to be turned on. The output terminal P of the signal distributor 510 may be output to the output terminal P of the signal distributor 510. 16 The enable (EN) signal may be input to the input terminal P of the second switch component 330-5b.17 The enable (EN) signal can control the second switch 330-5b to be short-circuited. The output terminal P of the signal distributor 510 is output to the output terminal P of the signal distributor 510. 16 The disable (DIS) signal may be input to the input terminal P of the second switch component 330-5b. 17 The disable (DIS) signal may control the second switch component 330 - 5 b to be turned on.

[0211] The switch control signals SW#1 and SW#2 output by the signal distributor 510 may allow the sound signal to be output from any one of the first sound output member 340-5a or the second sound output member 340-5b. For example, if an earphone is connected to the earphone terminal (e.g., the second sound output member 340-5b), the sound signal (e.g., the music being played or the call sound) is output only through the earphone. If the earphone is not connected to the earphone terminal (e.g., the second sound output member 340-5b), the sound signal is output only through the upper receiver (e.g., the first sound output member 340-5a).

[0212] In addition, the electrical connection and electrical signal movement relationship between the second audio amplifier 320-5c, the second rectifier 410-5c, the third switch component 330-5c or the third sound output element 340-5c are similar to those of the reference Figure 4 The electrical connection and electrical signal movement relationship between the processor 310-5 and the fourth sound output element 340-5d are also the same as those described in reference 1 and 1, and thus the detailed description thereof is omitted. Fig.12 Those described are the same, and thus a detailed description thereof is omitted.

[0213] Fig.14 It shows the flow through Fig.13 The electrical signal S of each line of the audio device 300-5 in 1 To S 8 Waveform diagram of .

[0214] refer to Fig.14 , segment (a) may be a segment that is not processed by the processor of the audio device 300-5 (eg, Fig.13 The processor 310-5) outputs to a digital interface (eg, Fig.13 For example, the segment (a) may be a segment in which the audio device 300-5 operates in an idle state. If no audio signal is input, the audio device 300-5 may operate in an idle state.

[0215] Segment (b) may be a segment where a digital audio signal outputted by the processor 310-5 to the digital interface 350-5a exists. For example, segment (b) may be a segment where the audio device 300-5 operates in an activated state. If there is an input audio signal, the audio device 300-5 may operate in an activated state. For example, segment (b) may be a segment where an audio signal outputted to the first sound output member 340-5a exists because a sound output device (e.g., headphones) is not connected to the second sound output member 340-5b.

[0216] Segment (c) may be a segment where a digital audio signal output by the processor 310-5 to the digital interface 350-5a exists. For example, segment (c) may be a segment where the audio device 300-5 operates in an activated state. If there is an input audio signal, the audio device 300-5 may operate in an activated state. For example, segment (c) may be a segment where a sound output device (e.g., headphones) is connected to the second sound output member 340-5b, and there is an audio signal output to the second sound output member 340-5b.

[0217] Signal S 1 The signal S may be an audio signal flowing from the processor 310-5 to the first audio amplifier 320-5a. 1 The current may flow from any point 315-5a on the digital interface 350-5a between the processor 310-5 and the first audio amplifier 320-5a to the input terminal P of the first rectifier 410-5a. 11 audio signal.

[0218] can exist in segment (a) (e.g., time point t 1 to 2 ) may correspond to audible noise. The audible noise signal may be generated by, for example, an electrical signal generated by an element or component disposed around the audio device 300-5 and / or an electrical signal flowing through a wire surrounding the audio device 300-2. 2 to 4 ) may correspond to a digital audio signal. For example, the digital audio signal may be output by the processor 310-5 through the output terminal P 1 Output to digital interface 350-5a. The digital audio signal may have, for example, +V dd A pulse form in which 0 is an upper level and 0 is a lower level.

[0219] Signal S 2 It can be from the output terminal P of the first rectifier 410-5a 12 Flows to the input terminal P of the signal distributor 510 13If the fine electric signal passes through the first rectifier 410-5a in section (a), an audio signal having a voltage of 0V may be output. The audio signal may correspond to a disable (DIS) signal for controlling the switch component 330 to be turned on. If the fine electric signal passes through the first rectifier 410-5a in section (b) to section (c) (e.g., from time point t 2 +d 1 At time t 4 +d 1 ') has an upper limit level +V dd and the pulse signal S with the lower limit level 0 1 Passing through the rectifier 410, the signal S 2 can be converted into a digital audio signal with a constant voltage. The constant voltage can correspond to V rec If V rec is a digital audio signal of a predetermined voltage value or higher, then V rec The audio signal converted by the rectifier 410 may not have a voltage value sufficient to short-circuit or open the switch component 330. 1 or 1 ' may correspond to the delay time. The delay time may correspond to the time when the rectifier 410 converts the signal S 1 Processed into signal S 2 The time required. The delay time can be delay time. 1 and d 1 ' may be the same or different. 1 and d 1 ' may correspond to a small value substantially close to zero. Therefore, the user may not feel the delay time.

[0220] Signal S 3 It can be the output terminal P from the signal distributor 510 14 flows to the input terminal P of the first switch component 330-5a. 15 audio signal.

[0221] If in segment (a) the signal S 2 Passing through the signal distributor 510, the signal S 3 The output terminal P of the signal distributor 510 can be 14 The audio signal having a voltage of 0V is outputted at t. The audio signal may correspond to a disable (DIS) signal for controlling the first switch component 330-5a to be turned on. 2 +d 1 to 3 ) in signal S 2 Passing through the signal distributor 510, it has a constant voltage Vrec The audio signal can be output to the output terminal P of the signal distributor 14 The output signal can be from the output terminal P of the signal distributor 510 14 If in section (c) (for example, from t 3 to 4 ) in signal S 2 Passing through the signal distributor 510, the audio signal with a voltage of 0V can be output to the output terminal P of the signal distributor. 14 The output signal may be from the output terminal P of the signal distributor 510. 14 Output L signal.

[0222] Signal S 4 It can be the output terminal P from the signal distributor 510 16 flows to the input terminal P of the second switch component 330-5b. 17 audio signal.

[0223] If in segment (a) the signal S 2 Through the signal distributor 510, the signal S 4 The output terminal P of the signal distributor 510 can be 16 The audio signal having a voltage of 0V is generated at the section (b). The audio signal may correspond to a disable (DIS) signal for controlling the second switch component 330-5b to be turned on. 2 Passing through the signal distributor 510, the audio signal with a voltage of 0V can be output to the output terminal P of the signal distributor. 14 The output signal can be from the output terminal P of the signal distributor 510 14 If in section (c) (for example, from t 3 to 4 +d 1 ') in signal S 2 Passing through the signal distributor 510, it has a constant voltage V rec The audio signal can be output to the output terminal P of the signal distributor 14 The output signal can be from the output terminal P of the signal distributor 510 14 Output H signal.

[0224] Signal S 5 It can be the output terminal P of the first audio amplifier 320-5a. 3 flows to the input terminal P of the first switch component 330-5a. 4 audio signal.

[0225] can exist in segment (a) (e.g., from time point t 1to 2 +d 3 ) may correspond to audible noise. The audible noise signal may be generated by, for example, an electrical signal generated by an element or component disposed around the audio device 300-5 and / or an electrical signal flowing through a wire surrounding the audio device 300-2. 2 +d 3 At time t 3 +d 3 The sinusoidal electrical signal in the first audio amplifier 320-5a may correspond to an analog audio signal or a digital audio signal. The electrical signal may include, for example, an analog audio signal output by a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The electrical signal may include, for example, a digital audio signal in the form of a class D. For example, the audio signal may be output via the output terminal P of the first audio amplifier 320-5a. 3 The audio signal may have, for example, +V a and -V as the lower limit level a For ease of description, the signal S 5 The waveform is shown as a sine wave, but is not limited thereto, and may have different amplitudes, periods, frequencies, and waveforms depending on the type and kind of the audio signal. The audio signal may be in segment (c) (e.g., from time point t 3 +d 3 'To time point t 4 ) is cut off. In section (c), the switching element (e.g., Fig.13 The switch element 329-5a) can cut off the audio signal flowing to the first switch component 330-5a. 3 or 3 ' can be defined as the audio amplifier 320-5a converting the signal S 1 Amplify to signal S 5 The required delay time. 3 Can be with d 1 ≤d 3 The value of the relationship. 3 'Can have d 1 '≤d 3 'relationship.

[0226] Signal S 6 It can be the output terminal P of the first audio amplifier 320-5a. 7 flows to the input terminal P of the second switch component 330-5b. 8 audio signal.

[0227] may exist in segment (a) (e.g., from time point t1 At time t 2 ) or segment (b) (e.g., from time point t 2 At time t 3 +d 3 ) may correspond to audible noise. The audible noise signal may be generated by, for example, an electrical signal generated by an element or component disposed around the audio device 300-2 and / or an electrical signal flowing through a wire surrounding the audio device 300-2. 3 +d 3 At time t 4 +d 3 The sinusoidal electrical signal in the first audio amplifier 320-5a may correspond to an analog audio signal or a digital audio signal. The audio signal may include an analog signal outputted by a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The audio signal may include a digital signal outputted in a Class D format. For example, the audio signal may be outputted via the output terminal P of the first audio amplifier 320-5a. 7 The audio signal may have, for example, +V a and -V as the lower limit level a For ease of description, the signal S 6 The waveform of is shown as a sine wave, but is not limited thereto, and may have different amplitudes, periods, frequencies, and waveforms according to the type and kind of the audio signal. 3 or 3 ' can be defined as the audio amplifier 320-5a converting the signal S 1 Amplify to signal S 6 The required delay time. 3 Can be with d 1 ≤d 3 The value of the relationship. 3 'Can have d 1 '≤d 3 'relationship.

[0228] Signal S 7 It can be from the output terminal P of the first switch component 330-5a. 5 The first sound output element 340-5a flows to the input terminal P 6 audio signal.

[0229] In section (a), a disable (DIS) signal for controlling the first switch component 330-5a to be turned on may be output from the output terminal P of the signal distributor 510. 14 flows to the input terminal P of the first switch component 330-5a. 15In response to this, the first switch component 330-5a may be opened. Thus, the audible noise generated in section (a) (eg, due to the audible noise generated from the time point t of S5) may be cut off. 1 At time t 2 +d 3 audible noise generated by the fine electrical signals of the

[0230] In section (b), an enable (EN) signal for controlling the first switch component 330 - 5 a to be short-circuited may be output from the output terminal P of the signal distributor 510. 14 flows to the input terminal P of the first switch component 330-5a. 15 In response thereto, the first switch component 330-5a may be short-circuited. Therefore, the analog audio signal converted by the first audio amplifier 320-5a may be output as a sound signal through the first sound output member 340-5a.

[0231] From t in section (b) 2 +d 1 +d 2 to 3 +d 1 '+d 2 ', it is possible to generate a +V a and -V as the lower limit level a The audio signal may include an analog audio signal or a digital audio signal. The audio signal may include an analog signal output through a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The audio signal may include a digital signal output in a Class D form. The audio signal may have a sine wave shape. However, the present disclosure is not limited thereto, and the audio signal may have various amplitudes, periods, frequencies, and waveforms according to the type and kind of the audio signal. 2 or 2 ' may correspond to a predetermined delay time after the first switch component 330-5a is connected by the enable (EN) signal. The delay time may be a protection time. By setting the protection time, a popping noise may be prevented from occurring in the first sound output member 340-5a. d 2 and d 2 ' may be the same or may not be the same. d 2 and d 2 ' may correspond to a small value substantially close to zero. Therefore, the user may not feel the difference with d 1 d 1 '、d 2 and d 2 'Same amount of delay.

[0232] The switch element 329-5a can cut off the t in section (c).3 +d 1 +d 2 to 4 +d 1 '+d 2 ' The audio signal flowing to the first switch part 330-5a. Therefore, the output of the sound signal to the first sound output part 340-5a can be cut off.

[0233] Signal S 8 It can be from the output terminal P of the second switch component 330-5b. 9 The second sound output part 340-5b flows to the input terminal P 10 audio signal.

[0234] In section (a), a disable (DIS) signal for controlling the first switch component 330-5a to be turned on may be output from the output terminal P of the signal distributor 510. 16 flows to the input terminal P of the second switch component 330-5b. 17 In response thereto, the first switch component 330-5a may be opened. Thus, the audible noise generated in section (a) (eg, due to the noise generated by the S 6 Time point t 1 At time t 3 +d 3 audible noise generated by the fine electrical signals of the

[0235] The switch element 329-5a can cut off the t in section (b). 2 to 3 +d 1 +d 2 The audio signal flowing to the second switch part 330-5b. Therefore, the output of the sound signal to the second sound output part 340-5b can be cut off.

[0236] From t in segment (c) 3 +d 1 +d 2 to 4 +d 1 '+d 2 ', an enable (EN) signal for controlling the short circuit of the second switch component 330-5b can be output from the output terminal P of the signal distributor 510 16 flows to the input terminal P of the second switch component 330-5b. 17 In response thereto, the second switch component 330-5b may be short-circuited. Therefore, the analog audio signal converted by the first audio amplifier 320-5a may be output as a sound signal through the second sound output member 340-5b.

[0237] From t in segment (c)3 +d 1 +d 2 to 4 +d 1 '+d 2 ', it is possible to generate a +V a and -V as the lower limit level a The audio signal may include an analog audio signal or a digital audio signal. The audio signal may include an analog signal output through a receiver included in the electronic device 101 or a 3.5 mm headset connected to the electronic device 101. The audio signal may include a digital signal output in a Class D form. The audio signal may have a sine wave shape. However, the present disclosure is not limited thereto, and the audio signal may have various amplitudes, periods, frequencies, and waveforms according to the type and kind of the audio signal. 2 or 2 ' may correspond to a predetermined delay time after the second switch component 330-5b is connected by the enable (EN) signal. The delay time may be a protection time. By setting the protection time, a popping noise may be prevented from occurring in the second sound output member 340-5b. d 2 and d 2 ' may be the same or may not be the same. d 2 and d 2 ' may correspond to a small value substantially close to zero. Therefore, the user may not feel the difference with d 1 d 1 '、d 2 and d 2 'Same amount of delay time. 2 Can be with d 1 ≤d 3 ≤d 1 +d 2 The value of the relationship. 2 'Can have d 1 '≤d 3 '≤d 1 '+d 2 'relationship.

[0238] Fig.15 2 is a diagram showing an electronic device (eg, Figure 1 A plan view of an electronic device 101).

[0239] refer to Fig.15 , the electronic device 101 may include two types 101a and 101b. However, the present disclosure is not limited thereto, and may include various types of structures.

[0240] exist Fig.15In (a), the electronic device 101a may include a PCB 1500a, an upper receiver 1510a, a lower speaker 1520a, a USB terminal 1530a, and a 3.5mm headphone terminal 1540a. The upper receiver 1510a may correspond to Fig.12 The first sound output element 340-4a. The upper receiver 1510a may correspond to Fig.13 The first sound output member 340-5a. The 3.5mm headphone terminal 1540a may correspond to Fig.13 The second sound output member 340-5b. Various types of sound output members (eg, earphones, headphones, and speakers) may be connected to the second sound output member 340-5b. The lower speaker 1520a may correspond to Fig.12 The lower speaker 1520a may correspond to the second sound output element 340-4b. Fig.13 The USB terminal 1530a may correspond to the third sound output member 340-5c. Fig.12 The third sound output member 340-4c. Various types of sound output members (eg, earphones, headphones, and speakers) may be connected to the third sound output member 340-5c. The USB terminal 1530a may correspond to Fig.13 Various types of sound outputs (eg, earphones, headphones, and speakers) may be connected to the fourth sound output member 340-5d.

[0241] exist Fig.15 In (b), the electronic device 101b may include a PCB 1500b, an upper speaker 1510b, a lower speaker 1520b, and a USB port 1530b. The upper speaker 1510b may correspond to Fig.12 The first sound output element 340-4a. The upper speaker 1510b may correspond to Fig.13 The first sound output element 340-5a. The lower speaker 1520b may correspond to Fig.12 The lower speaker 1520b may correspond to the second sound output element 340-4b. Fig.13 The USB terminal 1530b may correspond to the third sound output member 340-5c. Fig.12 The third sound output member 340-4c. Various types of sound outputs (eg, earphones, headphones, and speakers) may be connected to the third sound output member 340-5c. The USB terminal 1530b may correspond to Fig.13Various types of sound outputs (earphones, headphones, and speakers) can be connected to the fourth sound output element 340-5d. In addition, Fig.15 The plurality of sound output elements in the electronic devices 101a and 101b may correspond to various combinations of Fig.12 A plurality of sound output elements 340-4a, 340-4b and 340-4c or Fig.13 Multiple sound output parts 340-5a, 340-5b, 340-5c and 340-5d.

[0242] According to an embodiment of the present invention, an audio device (eg, Figure 4 The audio device 300-2 may include a processor configured to output an audio signal (eg, Figure 4 The audio device 300-2 may include an audio amplifier (eg, Figure 4 The audio device 300-2 may include an audio amplifier 320 configured to amplify and output an audio signal output from the processor 310-2 through an interface 350 electrically connected to the processor 310-2. Figure 4 The switch component 330 is configured to switch the amplified audio signal output from the audio amplifier 320 to the sound output member (e.g., Figure 4 The audio device 300-2 may include a sound output member 340 configured to output the amplified audio signal transmitted through the switch member 330 to the outside. The audio device 300-2 may include a rectifier (e.g., Figure 4 The rectifier 410 is configured to output a switch control signal for enabling the switch component 330 if there is an audio signal transmitted from the processor 310-2 to the audio amplifier 320 through the interface 350.

[0243] In the audio device 300 - 2 according to an embodiment of the present disclosure, the rectifier 410 may be configured to rectify an audio signal transmitted from the processor 310 - 2 to the audio amplifier 320 through the interface 350 into a signal having a DC voltage and output the signal as a switch control signal.

[0244] According to an embodiment of the present disclosure, the audio device 300-3 (eg, Figure 6 The audio device 300-3 may include an adjustment component 610 (eg, Figure 6An adjustment component 610 is provided, which is configured to adjust the voltage level of the DC voltage signal output from the rectifier 410 and transmit the DC voltage signal to the switch component 330.

[0245] In the audio device 300 - 3 according to an embodiment of the present disclosure, the adjustment part 610 may be configured to increase or decrease the level of the DC voltage signal output from the rectifier 410 and transmit the DC voltage signal to the switch part 330 .

[0246] In the audio device 300b (for example, Figure 8b In the audio device 300b), the audio amplifier 320b and the rectifier 410 can be configured as an integrated circuit.

[0247] In the audio device 300a (for example, Figure 8a In the audio device 300a), the processor 310a (eg, Figure 8a The processor 310a) and the rectifier 410 may be configured as an integrated circuit.

[0248] In the audio device 300c (for example, Figure 8c In the audio device 300c), the audio amplifier 320c (eg, Figure 8c The audio amplifier 320c) and the switch component 330 can be configured as an integrated circuit.

[0249] In the audio device 300e (eg, Figure 8e In the audio device 800e), the audio amplifier 320e (eg, Figure 8e The audio amplifier 320e), the rectifier 410 and the switch component 330 may be configured as an integrated circuit.

[0250] According to an embodiment of the present disclosure, there may be various effects including an effect of detecting an audio signal and, if the audio signal is present, outputting a control signal EN / DIS for controlling the switch part 330 .

[0251] According to an embodiment of the present disclosure, the audio device 300 - 2 may include various effects including an effect of blocking audible noise generated in an idle state from being output to the sound output member 340 .

[0252] In the audio device 300-4 (eg, Fig.12 In the audio device 300-4), the sound output elements 340-4a, 340-4b and 340-4c (for example, Fig.12The first sound output element 340-4a, the second sound output element 340-4b, and the third sound output element 340-4c may include a plurality of speakers (eg, Fig.12 In the audio device 300-4, the switch components 330-4a and 330-4b may include a plurality of switches (eg, Fig.12 The plurality of switches are configured to independently connect the plurality of speakers 340-4a, 340-4b, and 340-4c to the audio amplifier (e.g., Fig.12 In the audio device 300-4, the rectifier 410 may be configured to output a switch control signal EN / DIS for controlling the plurality of switches 330-4a and 330-4b.

[0253] According to the embodiment of the present disclosure, the audio device 300-5 (for example, Fig.13 The audio device 300-5 may include a signal distributor 510 (eg, Fig.13 The signal distributor 510 is configured to transmit the signal to the rectifier 410-5a (eg, Fig.13 The first rectifier 410-5a) outputs a switch control signal EN / DIS, and outputs a switch control signal EN / DIS for each of the plurality of switches 330-5a and 330-5b.

[0254] In the audio device 300 - 5 according to the embodiment of the present disclosure, the plurality of input terminals P of the signal distributor 510 13 and P 30 Any input terminal P 13 Can be configured to be electrically connected to the rectifier 410-5a.

[0255] In the audio device 300 - 5 according to the embodiment of the present disclosure, the plurality of input terminals P of the signal distributor 510 13 and P 30 Any input terminal P 30 May be configured to be electrically connected to processor 310 - 5 .

[0256] In the audio device 300 - 5 according to the embodiment of the present disclosure, the plurality of input terminals P of the signal distributor 510 13 and P 30 Any input terminal P 30 It can be configured to be electrically connected to the audio amplifier 320-5a.

[0257] In the audio device 300-5 according to an embodiment of the present disclosure, the signal distributor 510 may be a logic circuit configured to output a first switch control signal EN for enabling a first switch 330-5a included in a plurality of switches 330-5a and 330-5b and a second switch control signal DIS for disabling a second switch 330-5b included in a plurality of switches 330-5a and 330-5b through a switch control signal EN / DIS output by the first rectifier 410-5a.

[0258] The audio device 300 may include various effects including an effect of controlling output of a sound signal to only one speaker among a plurality of speakers.

[0259] A method for controlling the output of an audio signal by an electronic device 101 according to an embodiment of the present disclosure may include obtaining an audio signal. The control method may include amplifying the obtained audio signal. The control method may include rectifying the obtained audio signal and outputting a switch control signal EN / DIS based on the rectified signal. The control method may include outputting an amplified audio signal based on the switch control signal.

[0260] In the method for controlling the output of an audio signal by the electronic device 101 according to an embodiment of the present disclosure, the switch control signal EN / DIS may be a signal for controlling to enable (EN) or disable (DIS) the output of the amplified audio signal.

[0261] The method for controlling the output of an audio signal by the electronic device 101 according to an embodiment of the present disclosure may include outputting a switch control signal EN / DIS to enable output of the amplified audio signal if the rectified signal is a predetermined voltage or higher.

[0262] The method for controlling the output of an audio signal by the electronic device 101 according to an embodiment of the present disclosure may include outputting a switch control signal EN / DIS to disable the output of the amplified audio signal if the rectified signal is less than a predetermined voltage.

[0263] The method for controlling the output of an audio signal by the electronic device 101 according to an embodiment of the present disclosure may include adjusting a voltage level of a rectified signal.

[0264] In the present disclosure, an electronic device may include a non-transitory computer-readable storage medium storing one or more programs. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to obtain a signal in an interface corresponding to an input for audio amplification. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to output an amplified signal using the signal in the interface as an input. The one or more programs stored in the computer-readable storage medium may include instructions that enable the electronic device to connect a path for transmitting the amplified signal to an output audio signal via a signal rectified from the signal obtained from the interface.

[0265] The electronic device according to various embodiments of the present disclosure may be one of various types of electronic devices. For example, the electronic device may include a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to the above-mentioned electronic devices.

[0266] It should be understood that the various embodiments of the present disclosure and the terms used in the embodiments are not intended to limit the technical features set forth herein to specific embodiments, and include various changes, equivalents or substitutions of the corresponding embodiments. With regard to the description of the accompanying drawings, similar reference numerals may be used to represent similar or related elements. It will be understood that, unless the relevant context clearly indicates otherwise, the singular form of the noun corresponding to the project may include one or more things. As used herein, each of the phrases such as "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" may be included in all possible combinations of the items listed together with the corresponding one in the phrase. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “coupled to another element (e.g., a second element)”, “coupled to another element (e.g., the second element)”, “connected to another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” using the terms “operably” or “communicatively” or without using the terms “operably” or “communicatively”, it means that the element can be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0267] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "component," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or the smallest unit or component of a single integrated component. For example, depending on the embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0268] The various embodiments described herein may be implemented as software (e.g., program 140) that includes one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) readable by a machine (e.g., electronic device 101). For example, a processor (e.g., processor 120) of a machine (e.g., electronic device 101) may call at least one of the one or more instructions stored in the storage medium, and use or not use one or more other components to run the instruction under the control of the processor. This allows the machine to be operated to perform at least one function according to at least one instruction called. 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. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

[0269] According to the implementation, the method according to various implementations of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a commodity. The computer program product may be released in the form of a machine-readable storage medium (e.g., a CD-ROM) or downloaded via an application store (e.g., Play Store). TM ) online distribution (e.g., downloading or uploading), or directly between two user devices (e.g., smartphones). If distributed online, at least parts of the computer program product may be temporarily generated, or at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a relay server).

[0270] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. Some of the multiple entities may be separately arranged in different components. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform one or more functions of each component in the multiple components in the same or similar manner as performed by a corresponding one of the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or heuristically, or one or more operations in the operations may be performed or omitted in different orders, or one or more other operations may be added.

Claims

1. An audio device (300-2), comprising: A processor (310-2) configured to output an audio signal; an audio amplifier (320) configured to amplify and output the audio signal, wherein the audio signal is output from the processor (310-2) through an interface (350) electrically connected to the processor (310-2); a switch component (330) configured to switch the amplified audio signal output from the audio amplifier (320) to a sound output member (340) in response to a switch control signal (EN / DIS); The sound output member (340) is configured to output the amplified audio signal transmitted through the switch member (330) to the outside; as well as A rectifier (410) is configured to output the switch control signal (EN / DIS) for enabling or disabling the switch component (330) if the audio signal transmitted from the processor (310-2) through the interface (350) to the audio amplifier (320) is present.

2. The audio device according to claim 1, wherein The rectifier (410) is configured to rectify the audio signal transmitted from the processor (310-2) to the audio amplifier (320) through the interface (350) into a DC voltage signal, and output the DC voltage signal as the switch control signal (EN / DIS).

3. The audio device according to claim 2, further comprising an adjustment component (610), wherein the adjustment component (610) is configured to adjust a voltage level of the DC voltage signal output from the rectifier (410) and transmit the DC voltage signal to the switching component (330).

4. The audio device according to claim 3, wherein: The adjustment component (610) increases or decreases the voltage level of the DC voltage signal output from the rectifier (410) and transmits the DC voltage signal to the switch component (330).

5. The audio device according to any one of claims 1 to 4, wherein: The audio amplifier (320b) and the rectifier (410) are configured as an integrated circuit.

6. The audio device according to any one of claims 1 to 4, wherein: The processor (310a) and the rectifier (410) are configured as an integrated circuit.

7. The audio device according to any one of claims 1 to 4, wherein: The audio amplifier (320c) and the switch component (330) are configured as an integrated circuit.

8. The audio device according to any one of claims 1 to 4, wherein: The audio amplifier (320e), the rectifier (410) and the switch component (330) are configured as an integrated circuit.

9. The audio device according to claim 1, wherein The sound output part (340) includes a plurality of speakers (340-4a, 340-4b, 340-4c), wherein the switch component (330-4a, 330-4b) comprises a plurality of switches (330-4a, 330-4b), the plurality of switches being configured to independently connect the plurality of speakers (340-4a, 340-4b) to the audio amplifier (320-4a), and The rectifier (410) is configured to output the switch control signal (EN / DIS) for controlling the plurality of switches (330-4a, 330-4b).

10. The audio device according to claim 9, further comprising a signal distributor (510), wherein the signal distributor (510) is configured to output a switch control signal for each of the plurality of switches (330-5a, 330-5b) through the switch control signal (EN / DIS) output by the rectifier (410-5a).

11. The audio device according to claim 9, further comprising a signal distributor (510), the signal distributor (510) being configured to output a switch control signal for each of the plurality of switches (330-5a, 330-5b) through the switch control signal (EN / DIS) output by the rectifier (410-5a), in, The plurality of input terminals (P 13 , P 30 ) any one of the input terminals (P 13 ) is electrically connected to the rectifier (410-5a).

12. The audio device according to claim 9, further comprising a signal distributor (510), the signal distributor (510) being configured to output a switch control signal for each of the plurality of switches (330-5a, 330-5b) through the switch control signal (EN / DIS) output by the rectifier (410-5a), in, The plurality of input terminals (P 13 , P 30 ) any one of the input terminals (P 30 ) is electrically connected to the processor (310-5).

13. The audio device according to claim 9, further comprising a signal distributor (510), the signal distributor (510) being configured to output a switch control signal for each of the plurality of switches (330-5a, 330-5b) through the switch control signal (EN / DIS) output by the rectifier (410-5a), in, The plurality of input terminals (P 13 , P 30 ) any one of the input terminals (P 30 ) is electrically connected to the audio amplifier (320-5a).

14. The audio device according to claim 10, wherein: The signal distributor (510) is a logic circuit configured to output a first switch control signal (EN) for enabling a first switch (330-5a) included in the plurality of switches (330-5a, 330-5b) and a second switch control signal (DIS) for disabling a second switch (330-5b) included in the plurality of switches through the switch control signal (EN / DIS) output by the rectifier (410-5a).

15. A method for controlling the output of an audio signal, the output of the audio signal being controlled by the electronic device (101) according to any one of claims 1 to 14, the method comprising: Obtaining an audio signal; amplifying the obtained audio signal; rectifying the obtained audio signal and outputting a switch control signal (EN / DIS) based on the rectified signal; as well as The amplified audio signal is output based on the switch control signal.

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