CROSS REFERENCE TO RELATED APPLICATIONS

This application is a National Phase Entry of PCT International Application No. PCT/KR2019/007514, which was filed on Jun. 21, 2019, and claims a priority to Korean Patent Application No. 10-2018-0072360, which was filed on Jun. 22, 2018, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

Embodiments of the disclosure relate to a technology for converting a digital audio signal into an analog audio signal.

BACKGROUND ART

With regard to miniaturization or internal structural improvement of a user terminal (e.g., a smart phone), a conventional earphone jack of 3.5 mm diameter provided on the user terminal is being replaced with a USB port. Accordingly, to connect an earphone including an audio plug of 3.5 mm diameter to the user terminal, an adapter supporting connection between the user terminal and the earphone is required.

DISCLOSURE

Technical Problem

When connecting between a user terminal including a USB port and an earphone including an audio plug of 3.5 mm diameter, there may be annoyance of having to always have an adapter for compatibility. Also, to use the earphone without the adapter, the earphone including a digital to analog converter (DAC) for converting a digital audio signal provided from the user terminal into an analog audio signal may be required.

Various embodiments of the disclosure may provide an electronic device, a method, and a system capable of converting the digital audio signal received from the user terminal by wire or wireless into the analog audio signal and providing the converted analog audio signal to an audio output device.

Technical Solution

An electronic device according to an embodiment of the disclosure includes a first connector electrically connectable to an external electronic device, a second connector electrically connectable to an external audio plug, a wireless communication circuit, and at least one processor, and the at least one processor receives, when the electronic device is connected to the external electronic device through the first connector, a first digital audio signal from the external electronic device through the first connector, converts the received first digital audio signal into a first analog audio signal, and outputs the converted first analog audio signal output through the second connector, and when the electronic device is connected to the external electronic device through the wireless communication circuit, receives a second digital audio signal from the external electronic device through the wireless communication circuit, converts the received second digital audio signal into a second analog audio signal having a sound quality lower than that of the first analog audio signal, and outputs the converted second analog audio signal through the second connector.

In addition, a method of outputting an audio signal by an electronic device according to an embodiment of the disclosure includes, when the electronic device is connected to an external electronic device through a first connector of the electronic device, receiving a first digital audio signal from the external electronic device through the first connector, converting the received first digital audio signal into a first analog audio signal, and outputting the converted first analog audio signal through a second connector of the electronic device, and when the electronic device is connected to the external electronic device through a wireless communication, receiving a second digital audio signal from the external electronic device through the wireless communication, converting the received second digital audio signal into a second analog audio signal having a sound quality lower than that of the first analog audio signal, and outputting the converted second analog audio signal through the second connector.

In addition, a system including an external electronic device, an electronic device connected to the external electronic device, and an audio output device connected to the electronic device, according to an embodiment of the disclosure includes, when the external electronic device and the electronic device are connected through a wired communication, that the external electronic device transmits a first digital audio signal to the electronic device through the wired communication, the electronic device converts the first digital audio signal into a first analog audio signal, and the electronic device outputs the converted first analog audio signal to the audio output device, and when the external electronic device and the electronic device are connected through a wireless communication, that the external electronic device transmits a second digital audio signal to the electronic device through the wireless communication, the electronic device converts the second digital audio signal into a second analog audio signal having a sound quality lower than that of the first analog audio signal, and the electronic device outputs the converted second analog audio signal to the audio output device.

Advantageous Effects

According to various embodiments of the disclosure, as an electronic device converts a digital audio signal received from a user terminal by wire or wireless into an analog audio signal and provides the analog audio signal to an audio output device, convenience of use of the audio output device may be improved.

In addition, according to various embodiments of the disclosure, when the electronic device and the user terminal are connected by wire, a battery of the electronic device is charged and a wireless communication circuit is turned off, thus efficient power management of the electronic device may be achieved.

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

