It is provided a digital media playing device, comprising a storage for storing a media file; an audio decoder for generating digital signal for audio from the media file; a digital to analog converter for converting digital signal for audio to analog signal and providing the analog signal to a power amplifier; and the power amplifier for amplifying the analog signal; wherein,an optical coupler is added between the audio decoder and the digital to analog converter,and the optical coupler transmits the digital signal for audio from the audio decoder to the digital to analog converter by using light signal.

Digital media playing device

The utility model provides an audio player with a mobile storage function, which comprises a control module, a transmission interface module and a storage module The transmission interface module and the storage module are respectively connected with the control module, the storage module is used for storing data information received by the transmission interface module, and the control module is further connected with an audio decoding module and used for decoding audio data in the storage module Due to the transmission interface module, the audio player can be conveniently connected with external digital equipment to be in data transmission Due to the storage module, various types of data can be stored in the audio player In addition, the audio player is small in volume and convenient in carrying and has the mobile storage function

Audio player with mobile storage function

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Audio player with mobile storage function