headphone device

Abstract

An earphone device comprises an earphone body, a C-type USB interface and a control circuit. The C-type USB interface is coupled to the earphone body and an external electronic device to function as asignal transmission interface between the earphone body and the external electronic device. The control circuit is coupled to the C-type USB interface, and compares the voltage of a first power source from the external electronic device with the reference voltage. When the voltage of the first power source is greater than the reference voltage, the control circuit sets the C-type USB interface tothe digital interface mode, so that the earphone body and the external electronic device transmit digital audio. When the voltage of the first power source is less than or equal to the reference voltage, the control circuit switches the C-type USB interface to the analog interface mode, so that the earphone body and the external electronic device transmit analog audio.

Description

technical field [0001] The invention relates to an earphone device, and in particular to an earphone device with a C-type USB interface equipped with an automatic switching mechanism between a digital interface mode and an analog interface mode. Background technique [0002] Generally speaking, most common headphone devices are headphone devices with an analog interface mode, and the signals received or output by the headphone device with an analog interface mode are all analog signals. However, with the development of science and technology, earphone devices with digital interface mode and analog interface mode have been developed, such as earphone devices with C-type USB interface. The signals are all digital signals. Generally speaking, the digital interface mode has the advantages of good sound effect and low noise interference, and is convenient for the application of other additional functions (such as heartbeat detection, body data monitoring, active noise cancellati...

AI Technical Summary

Problems solved by technology

Generally speaking, the digital interface mode has the advantages of good sound effect and low noise interference, and is convenient for the application of other additional functions (such as heartbeat detection, body data monitoring, active noise cancellation, etc.), but the digital interface mode must transmit better sound quality Therefore, how to further improve and perfect the user experience that is beneficial to consumers is an important technical issue and goal that related companies must continue to work hard to think about and break through.

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