KR100669283B1 - Operational method of automobile audio system - Google Patents

Abstract

An operating method of an audio device for a vehicle is provided to be capable of using a free run-type timer so that a random play function is available even in a vehicular audio which artificially makes a playing sequence by being mounted with a CD(Compact Disk) player which does not support the random play function. Timer data is extracted from a free run-type timer(101). The timer data is divided by the number of overall songs of a compressed music file recorded on a storage medium, and the remainder is calculated(102). The compressed music file having a sequence equivalent to a value generated by adding 1 to the remainder is selected as a played song(103). It is decided whether the played song is a previously played compressed music file(104). If not, the played song is confirmed(107).

Description

Operational method of automobile audio device

1 is a block diagram briefly showing a configuration of a typical car audio;

2 is a flowchart illustrating a method of operating a vehicle audio according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: input unit 20: CD reader

30: display unit 40: audio control unit

50: signal controller 60: controller

The present invention relates to a vehicle audio playback method that supports the MP3 file format, and more particularly, to a vehicle in which a CD player that does not support a random playback function using a free-run type timer is installed to artificially create a playback order. The present invention relates to a method for reproducing vehicle audio, which enables random reproduction in audio.

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Recently, with the development of electronic technology, in order to improve the performance of automobiles, many rely on the control of electronic devices. In particular, the development of such electronic devices is applied to not only actual driving of a vehicle but also various safety devices for driving a driver, various additional devices for driving convenience, and a traveling device.

In particular, an audio system is installed for the driver's convenience and comfortable operation, and a radio for listening to various information and music transmitted from a broadcasting station, and a cassette recorder or CD player for listening to a cassette tape or a CD.

In addition, recently, an MP3 playback device capable of playing MP3 files that can be acquired through a computer or the like as well as a general audio CD in a vehicle has been installed in a vehicle, so that music in MP3 file format can be listened to in a vehicle.

In general, MP3 (MPEG Audio Layer-3) is a file format that compresses a large amount of music files into a very small size. As described above, an apparatus for reproducing the compressed music file through a computer or the like has been developed and used. Moreover, ultra-compact and lightweight MP3 players for playing the MP3 files have been developed and widely used.

The MP3 player stores music files in a storage medium such as a memory or a CD-Rom. In recent years, the MP3 player has been reduced in size and increased in capacity, so that a large number of MP3 music files can be stored.

Here, in the conventional car audio device, a car audio device equipped with a CD player supporting a random play function and a CD player not supporting a random play function are mounted to artificially create a playback order in the control unit of the car audio device. There are two types of audio devices.

In this case, the on-vehicle audio device equipped with a CD player that does not support the random play function enables the user to predict the play order by calculating a song in a control unit according to a predetermined formula, thereby providing a user who requires the random play function. There is a problem that cannot be met.

The present invention has been made to solve the above problems of the prior art, the object of the vehicle is to support a random playback function that the user can not predict even in the car audio equipped with a CD player that does not support the random playback function by itself A method of playing audio.

According to another aspect of the present invention, there is provided a method of reproducing a vehicle audio apparatus for reproducing compressed music files recorded on a storage medium, the method comprising: extracting timer data from a free run type timer; A second step of calculating the remainder by dividing the timer data by the total number of pieces of the compressed music file recorded on the storage medium; and a third step of selecting the compressed music file in the order corresponding to the remaining one plus one; And a fourth step of determining whether the reproduced song is a previously reproduced compressed music file, and if the reproduced song has not been reproduced, is determined as a reproduced song.

In addition, if the playback song is reproduced, the first to fourth steps are repeated a predetermined number of times or more.

At this time, the compressed music file is characterized in that the MP3 format.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the configuration of a typical car audio.

Referring to FIG. 1, a search for a sound or audio data list to be output, one of the audio data is selected or played, and an input unit 10 and an MP3 file for controlling the operation of an audio device may be used. A CD reader 20 for reading a CD title in which music data is recorded, and an audio controller for receiving and playing music data recorded in the CD title and extracting and reproducing the selected audio data according to the input output signal. 40, a display unit 30 which receives the operation state of the audio control unit 40 and the audio data list stored in the CD title and outputs the file name as a file name, and compresses the audio data output through the audio control unit 40. And the analog voltage signal output through the signal processor 50 and the signal processor 50 for converting into an analog voltage signal and outputting it. It receives the output comprises a device 60 for converting and outputting a sound signal.

2 is a flowchart illustrating a method of operating a vehicle audio according to the present invention.

Referring to FIG. 2, the operation of the in-vehicle audio device of the present invention will be described. First, when the random function of the audio device starts, the time of the music files recorded in the CD title such as the MP3 file format by the free run timer of Micom A first step 101 of extracting data, a second step 102 of calculating the remainder by dividing the time data extracted from the free-run type timer by the total number of music files recorded on the CD title, The corresponding song RDM1 is the first song RDM1, which corresponds to the standard of the random reproducing method of the in-vehicle audio device of the present invention.

Next, a third process 103 is performed to set the song corresponding to the number calculated by adding 1 to the number corresponding to the first playback song RDM1 to the next target song RDM2 according to the present invention.

In this case, whether or not the target song RDM2 has been reproduced from the audio device is determined through a fourth process 104. If the target song RDM2 is not played, the selection of the song is completed through a process 107 of determining the next song to be randomly played according to the present invention.

In addition, if playback is not performed from the audio device before the target song RDM2, a process 105 is performed to determine whether the first to fourth processes are repeated three or more times. In this case, if the determining process 105 is repeated three or more times, the selection of the song is completed through the process of determining the target song 107, and if not, the fourth process 104 starts from the first process 101 again. ) Is repeated a predetermined number of times.

The random play method of the car audio device according to the present invention is applicable to all MP3 file formats recorded on a storage medium such as a CD title, and is applied to car audio equipped with all CD players that do not support the random play function. It is possible.

As described above, the operation method of the audio device for an automobile according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, and the scope of the technical idea of the present invention is protected. The application is possible by those skilled in the art within.

The operating method of the vehicle audio according to the present invention constituted as described above is a random method that is reproduced by a certain formula using a free-run type timer even in a vehicle audio equipped with a CD player that does not support the random play function. Rather, it has the effect of supporting a random music playback function that the user does not expect at all.

Claims (3)

In the playback method of a vehicle audio device for playing compressed music files recorded on a storage medium, Extracting timer data from a free run type timer; A second step of dividing the timer data by the total number of songs of the compressed music file recorded on the storage medium to calculate a remainder; A third step of selecting the compressed music files in the order corresponding to the remaining ones as the reproduction songs; And a fourth step of determining whether the reproduced song is a previously reproduced compressed music file, and if the reproduced song has not been reproduced, determine the reproduced song as the reproduced song. The method of claim 1, If the playback song has been played, And repeating the first to fourth steps more than a predetermined number of times. The method of claim 1, The compressed music file is a playback method of a vehicle audio device, characterized in that the MP3 format.

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