Data processing method for audio data playback, audio data playback method and audio data playback device

An audio playing method in an audio playing unit connected to an application processor, comprising:

• (a) transmitting n-th audio data stored in an m-th buffer to a digital analog converter (DAC) and outputting the n-th audio data through a speaker at a subsequent stage;
• (b) checking whether audio data is stored in a subsequent buffer which outputs the audio data in the next time;
• and
• (c) increasing n by 1 and performing the step of (a) again when the audio data is stored in the subsequent buffer, and ending the method when the audio data is not stored,
• wherein n is a natural number of 1 or more, m is equal to n mode M, M is the number of buffers in the audio playing unit, and m is equal to M when a remainder is 0.

An audio player comprising:

• a plurality of buffers that store audio data transmitted from an application processor at a previous stage;
• a digital-analog converter (DAC) that converts the audio data into analog data and outputs the analog data to a speaker at a subsequent stage;
• and
• a processor that sequentially transmits the audio data stored in the buffers in an output order to the DAC,
• wherein the processor (a) transmits n-th audio data stored in an m-th buffer to the DAC and outputs the n-th audio data through a speaker at a subsequent stage,
• (b) checks whether audio data is stored in a subsequent buffer which outputs the audio data in the next time, and
• (c) increases n by 1 and performs the step of (a) again when the audio data is stored in the subsequent buffer, and
• wherein n is a natural number of 1 or more, m is equal to n mode M, M is the number of buffers in the audio player, and m is equal to M when a remainder is 0.

An audio player comprising:

• an input unit that receives a user command;
• a storage unit that stores one or more audio files;
• a RAM that temporarily stores audio data to be decoded;
• an audio playing unit that includes a plurality of buffers storing decoded audio data and that sequentially converts the decoded audio data into an analog signal and outputs the analog signal;
• a speaker that externally outputs the analog signal output from the audio playing unit;
• and
• an application processor that sequentially reads audio data of the one or more audio files stored in the storage unit in accordance with a user command, decodes the read audio data in cooperation with the RAM, and transmits the decoded audio data to the audio playing unit,
• wherein the audio playing unit includes M buffers,
• wherein the application processor reads and decodes n-th audio data, which is read at the n-th time, by a data amount corresponding to the storage capacity of an m-th buffer, and
• wherein M is a natural number of 2 or more, n is equal to n mod M, mod is a remainder function, and m is equal to M when a remainder is 0.