KR101287086B1 - Apparatus and method for playing multimedia - Google Patents

Abstract

The present invention relates to an apparatus and method for playing two multimedia through one stereo plug.
According to an embodiment of the present invention, there is provided a multimedia playback device including a control unit and a stereo plug. The control unit processes the first multimedia data to generate a first audio signal, and processes the second multimedia data to generate a second audio signal. The stereo plug delivers the first output signal to the left channel of the audio output device and the second output signal to the right channel of the audio output device.
Therefore, when two or more users use one stereo plug, it is possible to select multimedia according to the taste of each user.

Description

Multimedia playback device and method {APPARATUS AND METHOD FOR PLAYING MULTIMEDIA}

The present invention relates to multimedia playback, and more particularly, to an apparatus and method for playing two multimedia through a stereo plug.

Recently, the audio device market, including the mp3 (MPEG Audio layer-3) player, is changing dramatically. Audio devices, combined with mobile phones or digital multimedia broadcasting televisions (DMB TVs), radios, etc., have evolved into multi-function multimedia playback devices, and the hardware of multimedia playback devices has also rapidly developed to be dual-core. Products include high performance multitasking processors such as processors.

However, the existing multimedia reproducing apparatus limits the number of sound sources output through the stereo plug to one or reproduces the plurality of sound sources without separating them.

Therefore, when two or more users are using a single stereo plug, for example, when one or more earphones are split into two left and right sides, only one piece of music can be selected and listened to.

The present invention provides a method and apparatus for delivering different multimedia to the left channel and the right channel of one stereo plug to solve the above problems.

According to an embodiment of the present invention, there is provided a multimedia playback device including a control unit and a stereo plug. The control unit processes the first multimedia data to generate a first audio signal, and processes the second multimedia data to generate a second audio signal. The stereo plug delivers the first output signal to the left channel of the audio output device and the second output signal to the right channel of the audio output device.

The controller may include a first processor and a second processor. The first processor processes the first multimedia data to generate a first audio signal, and the second processor processes the second multimedia data to generate a second audio signal. The first processor and the second processor may be mp3 file (MPEG audio layer-3 file) decoders, and the first multimedia data and the second multimedia data may be different mp3 files.

The first multimedia data or the second multimedia data is multi-channel data, and the controller may convert the first multimedia data or the second multimedia data into one-channel data.

The multimedia reproducing apparatus may include a digital multimedia broadcasting (DMB) receiving apparatus, and the first multimedia data or the second multimedia data may be a digital multimedia broadcasting application format (DMB-AF) file.

The multimedia player may include a radio receiver, and the first multimedia data or the second multimedia data may be a radio signal.

The multimedia playback device may include a volume control device. The volume control device sets the same level of the first audio signal and the second audio signal.

According to an embodiment of the present invention, a method of reproducing multimedia data by a multimedia reproducing apparatus is provided. The method of reproducing the multimedia data may include generating a first audio signal by processing the first multimedia data, generating a second audio signal by processing the second multimedia data, and an audio output device connected to a stereo plug. Reproducing the first audio signal through a left channel of and reproducing the second audio signal through a right channel of the audio output device.

The generating of the first audio signal may be performed by a first processor, and the generating of the second audio signal may be performed by a second processor. The first processor and the second processor may be an MPEG audio layer-3 file decoder, and the first multimedia data and the second multimedia data may be different mp3 files.

The first multimedia data is multi-channel data, and the generating of the first audio signal may include converting the first multimedia data into one-channel data. .

The second multimedia data is multi-channel data, and the generating of the second audio signal may include converting the second multimedia data into one-channel data. .

The multimedia data reproduction method may further include setting the same level of the first audio signal and the second audio signal.

When two or more users use one stereo plug, it is possible to select multimedia according to the taste of each user.

1 is a block diagram illustrating a configuration of a multimedia player according to an embodiment of the present invention.
2 shows an example of two multimedia playback by a conventional multimedia playback apparatus.
Figure 3 shows an example of two multimedia playback by the multimedia playback device according to an embodiment of the present invention.
4 shows the structure of a stereo jack.
5 illustrates operations of the controller, the stereo plug, the stereo jack, and the earphone of the multimedia player.
6 is a flowchart of a method of reproducing multimedia data by a multimedia reproducing apparatus according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is a block diagram illustrating a configuration of a multimedia player according to an embodiment of the present invention.

Multimedia playback device is a device that allows listening to music, DMB TV, radio broadcasts by combining an audio output device such as earphones with a stereo plug.

Referring to FIG. 1, according to the present invention, the multimedia player 100 includes a controller 110, a memory 120, and a stereo plug 160.

The controller 110 processes multimedia data such as an audio / video file, a digital multimedia broadcasting application format (DMB-AF) file, a radio signal, and the like. The multimedia data is output by an audio output device such as an earphone through the stereo plug 160 according to the type of data, and the video signal is output by a display (not shown).

The control unit 110 may process one multimedia data like the control unit of the existing multimedia playback device, or may process two or more multimedia data. That is, a plurality of multimedia data can be processed simultaneously. To this end, it may include a dual-core processor or two processors.

When the controller 110 includes a dual-core processor or two single-core processors, they may be referred to as a first processor 111 and a second processor 112. The first processor 111 or the second processor 112 may be an mp3 file decoder for playing an mp3 file (MPEG Audio layer-3 file). Also, the processor may be a processor for watching DMB TV and listening to radio broadcast. The first processor 111 and the second processor 112 may process multimedia data independently of each other. That is, while the first processor 111 plays the mp3 file, the second processor 112 may process the DMB AF file or the radio signal. In addition, the first processor 111 and the second processor 112 may play different mp3 files.

2 shows an example of two multimedia playback by a conventional multimedia playback apparatus, and FIG. 3 shows an example of two multimedia playback by a multimedia playback apparatus according to an embodiment of the present invention.

When the stereo data is reproduced through one channel by an existing multimedia reproducing apparatus, an error occurs or an interference phenomenon occurs, so that the multimedia data is reproduced in a form not desired by the user. Therefore, using a multiplexer (MUX) or the like, the controller of the multimedia reproducing apparatus must convert the multi-channel data into a 1-channel audio signal. When the multimedia data is stereo data, that is, multi-channel data of two or more channels, the controller of the multimedia playback apparatus according to an embodiment of the present invention is a mono audio signal, that is, one-channel audio. Convert to a signal.

Referring back to FIG. 1, the multimedia playback apparatus 100 may include a DMB receiving apparatus 130 for watching a DMB TV and a radio receiving apparatus 140 for listening to a radio broadcast. The DMB receiving device 130 and the radio receiving device 140 are each connected to the control unit 110. The DMB receiving apparatus 130 receives a DMB-AF file from the outside and transmits the DMB-AF file to the controller 110, and the radio receiving apparatus 140 receives a radio signal from the outside and transmits the radio signal to the controller 110. The configuration of the DMB receiving apparatus 130 and the radio receiving apparatus 140 can be understood by those skilled in the art, so detailed description thereof will be omitted.

In addition, the multimedia player 100 may include a volume control device 150. The volume control device 150 equals the level of the first audio signal and the second audio signal generated by the controller 110. When the magnitudes of the first audio signal and the second audio signal are different, for example, when the magnitude of the first audio signal is large enough, but the magnitude of the second audio signal is small, the user who listens to the second multimedia may have a volume. Wants to increase the size. If the size of the second audio signal is increased for the user listening to the second multimedia, the size of the first audio signal may be excessively large, in which case the user listening to the first multimedia may be damaged. Accordingly, in order to solve the problem, the volume control device 150 may make the same when the first audio signal and the second audio signal have different magnitudes.

The memory 120 is connected to the controller 110 and stores various information for driving the controller 110. It may also serve as a storage device for storing mp3 files and the like. Memory 120 may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium, and / or other storage device.

The stereo plug 160 receives an audio signal from the controller 110 and sends the audio signal to an audio output device such as an earphone. Detailed structure and operation of the stereo plug 160 will be described with reference to FIGS. 2 and 3.

4 shows the structure of a stereo jack.

Plugs used for stereo headphones are called stereo plugs, and the jacks that receive them are called stereo jacks. The stereo jack is divided into three and four poles according to the number of poles. The stereo jack shown in FIG. 2 is three poles, and four poles have a microphone (MIC) pole added to the three poles.

Referring to FIG. 4, the end portion 210L of the stereo jack is called a left (+) pole and transmits an audio signal to a left channel of the audio output device. The middle portion 210R is called the right pole and carries the audio signal to the right channel. The lowest portion 210G is called the ground pole and serves as a common ground for the left (+) and right (+) poles.

Each part of the stereo jack 210 is connected in combination with the corresponding part of the stereo plug of FIG.

5 illustrates operations of the controller, the stereo plug, the stereo jack, and the earphone of the multimedia player.

The controller 110 of the multimedia player generates the first audio signal and the second audio signal by processing the first multimedia data and the second multimedia data. The stereo plug 160 transmits the first audio signal and the second audio signal to the left channel and the right channel, for example, the left earphone 200L and the right earphone 200R, respectively, through the stereo jack 210. To pass. Thus, two multimedia devices can be played using one multimedia playback device, so that two users can wear earphones on one side, and the desired multimedia, for example, different mp3 files, or one listens to music One can watch DMB TV.

6 is a flowchart of a method of reproducing multimedia data by a multimedia reproducing apparatus according to an embodiment of the present invention.

The method for reproducing multimedia data according to an embodiment of the present invention includes a first audio signal generation step S610, a second audio signal generation step S620, a signal level adjustment step S630, and a reproduction step S640. .

In the first audio generation step S610 and the second audio generation step S620, the controller of the multimedia player generates the first audio signal by processing the first multimedia data, and processes the second multimedia data to process the second audio. Generate a signal. The controller may include a first processor and a second processor, the first processor may process the first multimedia data to generate a first audio signal, and the second processor may process the first multimedia data to process the first audio. You can generate a signal. The first processor and the second processor may be mp3 file decoders for decoding the first multimedia data and the second multimedia data, which are different mp3 files.

In operation S610 and operation S620, when the multimedia data is multichannel data, the controller may convert the multimedia data into 1-channel data. That is, when the first multimedia data or the second multimedia data is multi-channel data, the controller may convert it to 1-channel data.

In the signal level adjusting step S630, when the magnitudes of the first audio signal and the second audio signal are different, the controller sets the same.

In the reproduction step S640, the first audio signal is reproduced through the left channel of the audio output device connected to the stereo plug, and the second audio signal is reproduced through the right channel.

In the exemplary system described above, while the methods are described on the basis of a flowchart as a series of steps or blocks, the present invention is not limited to the order of the steps, and some steps may be performed in a different order than the steps described above Can occur at the same time. In particular, step S610 and step S620 may occur in a different order or at the same time.

In addition, those of ordinary skill in the art to which the invention pertains are not exclusive to the steps shown in the flowchart, and other steps may be included or one or more steps in the flowchart may be deleted without affecting the scope of the present invention. You will understand.

In addition, when the embodiment is implemented in software, the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function. The module may be stored in memory and executed by a processor.

Claims (13)

A first processor that converts a first mp3 (MPEG Audio layer-3) file into a one-channel mp3 file and decodes the converted first mp3 file to generate a first audio signal;
A second processor for converting a second mp3 file into a 1-channel mp3 file and decoding the converted second mp3 file to generate a second audio signal; And
A stereo plug for delivering the first audio signal to a left channel of an audio output device and the second audio signal to a right channel of the audio output device,
And the first mp3 file and the second mp3 file are different multi-channle mp3 files. delete In the multimedia data playback method by the multimedia playback device,
A first processor converting a first mp3 (MPEG Audio layer-3) file into a one-channel mp3 file and decoding the converted first mp3 file to generate a first audio signal ;
A second processor converting the second mp3 file into a 1-channel mp3 file and decoding the converted second mp3 file to generate a second audio signal;
Delivering, by the first processor, the first audio signal to a left channel of a stereo plug; And
Transmitting, by the second processor, the second audio signal to a right channel of the stereo plug,
And the first mp3 file and the second mp3 file are different multi-cahnnel mp3 files. delete delete delete delete delete delete delete delete delete delete

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