KR20040066000A - The advanced digital audio contents service system and its implementation method for mobile wireless device on wireless and wired internet communication network - Google Patents

Abstract

PURPOSE: An audio service system for a cellular phone using wired/wireless communication networks and a service system for realizing the audio service method are provided to convert audio files to store the converted audio files, and to transmit a desired audio file to a user cellular phone through a communication network, so that a user can listen to the audio file at any time. CONSTITUTION: A user(20) joins in a service operator(10). An Internet server system(100) of the service operator(10) writes subscription information on the user(20) in a user DB(120), and pre-assigns a personal storage space(110). The user(20) receives an audio file conversion generation system(310) from the service operator(10), installs the audio file conversion generation system(310) in an interactive computer(300), and directly converts a desired audio file by using the audio file conversion generation system(310).

Description

The audio service method for mobile phone using wired / wireless communication network and service system for implementation thereof {The advanced digital audio contents service system and its implementation method for mobile wireless device on wireless and wired internet communication network}

The present invention relates to an audio service system and method using a wired or wireless communication network, and more particularly, to an audio service method for converting and providing an audio file so that high quality audio can be heard even in a mobile phone suitable for an existing voice call.

According to the recent rapid technological development, a mobile phone ("mobile phone" in the present specification) is a personal information terminal having a wireless communication function, a computing function, and a network function, and includes a mobile phone, a PDA phone, a smartphone, etc. capable of wireless Internet. Therefore, the type of "mobile phone") and its spread are rapidly increasing.

Such mobile phones are increasingly being upgraded from simple voice call functions to information devices serving as personal computers. The development and change of these functions will be greatly affected by the recent development of wireless communication network technology such as wireless Internet and the development of various hardware (H / W) and software (S / W) constituting a mobile phone.

Now mobile phone users are not satisfied with simple phone functions and have a desire to obtain and share various information using mobile phones. In order to meet the needs of the users, the mobile communication service provider provides various contents related to music such as a ringtone or a karaoke dedicated to a mobile phone through a mobile phone, and the user can download and use it on his mobile phone.

Relatedly, codecs (coding / decoding), which are closely related to the playback of audio in existing mobile phones, are largely codecs that process MIDI data and "voice-only codecs" that process human speech during calls. Currently, mobile phones commercially available in Korea use the codec of "QCELP" or "EVRC", which is a CDMA method.)

However, the voice-only codec, which is optimized for voice calls, which is basically adopted in most mobile phones, emphasizes the frequency band in which the human voice is mainly located, and reduces the other areas. When using the voice-only codec, processing general audio data (hereinafter referred to as "audio file") having a frequency band different from that of human voice may be caused by distortion of the signal. There is a disadvantage in that noise is generated.

Therefore, the current mobile communication service provider only provides audio service based on the content of the ringtone type using MIDI.

In addition, the wireless Internet service using the existing mobile phone provided by the mobile communication service provider is given a function of simply selecting and downloading content provided by the service provider unilaterally, so that the user wants the information (for example, the user). Audio files created by the user) can not be played through their mobile phones, and due to the limitation of the internal memory capacity of the mobile phones, even if there is content that the user purchased and downloaded to the mobile phone, If you want to download, the user has to delete the existing content in order to secure the memory, there is an unreasonable point to repurchase the same amount when you want to download the same content in the future.

The present invention has been made in view of the above circumstances, and provides an audio service system and method for a mobile phone using a new type of wired / wireless communication network. The objectives are as follows.

To provide a new audio service method and system that enables users to listen to high-quality audio even in a mobile phone suitable for the current voice call,

The present invention aims to provide a new audio service method and system that allows users to create and store their own audio files and listen to them at any time.

1 is a view illustrating an audio service method and a service system for a mobile phone using a wired or wireless communication network according to the present invention;

2 is a view for explaining an audio file conversion and generation system for a mobile phone according to the present invention.

Explanation of symbols on the main parts of the drawings

10: service operator 20: user

30: Internet communication network 40: Wireless Internet data communication network

100: Internet server system 110: user storage space

120: user DB

200: wireless Internet server system 210: content DB for sale

220: virtual storage space 230: billing processing system

300: interactive computer for users

310: audio file conversion generation system for mobile phones

320: Audio file conversion generation server system for mobile phones

311: digital audio data (MP3, WAV files, etc.)

312: Data for mobile voice codec

400: Portable information device for users

410: audio file playback system for mobile phones

420: Voice Codec for Mobile Phone

Audio service system for mobile phones according to the present invention for achieving the above object, audio file conversion means for converting a general audio file to be reproduced in a voice codec for mobile phones, and the audio file through the audio file conversion means Storage means for converting and storing the converted audio file, and server means for transmitting the audio file requested by the user from the converted audio file stored in the storage means to the user mobile phone through a communication network. ,

In addition, an audio service method for a mobile phone according to the present invention includes an authentication step of authenticating that a subscribed user is the user, and a user storage space by converting a file to be reproduced in a voice codec for a mobile phone. And transmitting to a user mobile phone according to a request of an authenticated user among the stored audio files.

In addition, another audio service method for a mobile phone according to the present invention comprises the steps of converting and storing an audio file so that it can be played in a voice codec for mobile phones through an audio file conversion program, and when the user accesses the server, the conversion is performed. Transmitting an audio file playing program capable of playing the audio file to the user; and if the user selects any one of the converted audio files, transmitting the selected audio file to the user mobile phone. do.

Hereinafter, exemplary embodiments of an audio service system and a service method for a mobile phone according to the present invention will be described in detail with reference to the accompanying drawings.

In addition, the terms used in the present invention was selected as a general term widely used as possible now, but in certain cases, the term is arbitrarily selected by the applicant, in which case the meaning is described in detail in the description of the invention, The present invention is to be understood as the meaning of terms rather than names.

The present invention aims at converting an existing audio signal to enable high-quality audio to be listened to even in a mobile phone having a voice-only codec. A method of converting a specific audio signal will first be described in detail with reference to FIG. 2. The overall service method and system of the present invention using the audio file conversion generation method will be described later with reference to FIG.

2 is a view for explaining an audio file conversion and generation system according to the present invention.

All the sounds that make up the audio are composed of different frequencies of the harmonics of the fundamental frequency in addition to the fundamental frequency, and most of the frequencies are within 8 kHz based on human voice and music. . In the case of the voice-only codec 420 embedded in the mobile phone, the codec produced based on the 4 kHz voice call uses a 8 kHz sampling method to reduce the quantization error, and emphasizes the frequency corresponding to the voice region. The frequency domain is configured to be able to selectively listen only to the voice during a call by reducing.

Therefore, when the audio is reproduced through the voice-only codec 420 for the mobile phone, frequency-specific gain and harmonic distortion are generated, and even in the case of voice, the sound is output in a somewhat distorted sound quality from the original tone. Therefore, the present invention utilizes a correction means 313 for inverting the distortion portion for each frequency by inverting the processing process of the voice-only codec 420 for mobile phones based on the characteristics of the reproduction frequency and corrected through the correction means 313. By encoding the data through the encoding means 314, it is possible to reproduce similarly to the original audio sound, because it is audible and immersed in the reproduction of the final result.

In detail, the correction means 313 may include a compressor and a frequency-specific gain that reduce the overall gain of the digital audio within the dynamic range of the earphone or speaker which is the final output terminal of the audio. It consists of an equalizer that compensates for the difference. However, in the use of the compressor, it is possible to change the gain, attack, release, threshold, ratio, and pre-delay value according to the music genre and characteristics so that the music of the same genre is of the same type. It should not be tried because it is not composed only of songs, it is preferable to use only purely in the sense of volume control.

That is, the core of the audio signal correction means 313 of the present invention is an equalizer, and a gain through an equalizer for each frequency band according to a modulation scheme for each frequency band of the voice-only codec 420. The control method converts audio data to be reproduced similar to the original audio.

In addition to this, ancillary techniques for improving sound quality may be used, but it may be included in an equalizer in the concept of basically correcting audio based on a sound range.

In particular, when audio is transmitted through the voice network of the wireless Internet, such as ARS and call connection sound, audio disconnection may occur due to factors such as frame rate, packet rate loss, etc. When the audio is transmitted through the data network, the above disconnection does not occur, so it will be more efficient.

In the present invention, the above-described correction means 313 and the encoding means 314 are combined and referred to as an audio file conversion generation server system 320. The audio file conversion generation server system 320 may be configured by hardware. However, the software is usually programmed to implement the function.

Hereinafter, the entire audio service method and system of the present invention using the above-described method of converting an audio file will be described in detail.

1 illustrates an audio service method for a mobile phone using a wired / wireless communication network according to the present invention, and a service system for implementing the same.

First, the user 20 may subscribe to a service to the service operator 10. At this time, the Internet server system 100 of the service operator 10 writes the subscription details of the user 20 in the user DB 120, and allocates the personal storage space 110 of an appropriate size to the user in advance by referring to this. Do it.

In addition, the user 20 receives the audio file conversion generation system 310 for the mobile phone from the service operator 10 and installs it in his interactive computer 300 for the user, and the audio file conversion generation system 310 for the installed mobile phone By using it, you can directly convert and create the desired audio file.

The audio file conversion generation system 310 provided from the service operator 10 is a program that operates in the same manner as the audio file conversion generation server system 320 existing in the server system 100 in the service operator 10. The above-described correction means 313 and encoding 314 means will be programmed.

At this time, the audio file conversion generation system 310 may be installed (downloaded) and used in the interactive computer 300 of the user 20. However, even without such installation, the service server 10 may be installed in the Internet server system 100. It will be apparent that the audio file conversion generation server system 320 can be used to directly convert and generate the audio file.

That is, the user 20 accesses the Internet server system 100 of the service operator 10 through the Internet communication network 30 and the user storage space 110 provided by the service operator 10 for the converted file. ), And then the user 20 accesses the wireless Internet server system 200 of the service operator 10 through his mobile phone 400 and converts the stored information into his personal storage space 110. The downloaded audio file can be downloaded or streamed for playback.

That is, the audio file conversion generation server system 320 provided by the service operator 10 refers to a kind of program for converting an existing audio file so that it can be listened to with high sound quality even in a general voice dedicated codec. 2 has already been described above.

In addition, the user 20 may listen to the music that he / she wants to listen to after directly converting and generating the audio file through the above process, but may directly purchase and use content sold by the service operator 10. This process is described in detail as follows.

When a user 20 having a mobile phone 400 having a voice-only codec accesses the service operator 10 of the present invention and wants to use the service of the present invention, first, the audio file for the mobile phone from the service operator 10 is used. The playback system 410 is downloaded. The audio file reproducing system 410 for a mobile phone will mean a kind of programmed dedicated player capable of reproducing the audio file converted by the present invention. Therefore, the user who has downloaded the mobile phone audio file playback system 410 once will not have to download it again in future use unless the system 410 is deleted.

Therefore, the user 20 searches for the sales content DB 210, in which the service operator 10 has already converted and stored the audio file, purchases the desired audio file, and purchases the purchased audio file in his mobile phone 400 At this time, the audio file playback system 410 for mobile phones, which has been downloaded and installed previously, can be used to listen to the converted audio files purchased by the downloaded or streamed at high quality. Will be.

In other words, the method and system of the ADIUS service of the present invention provided through FIG. 1 may exist in two cases. First, a user directly converts an audio file that he / she wants to a storage means operated by the service operator 10. After storing, and then using the mobile phone 400 to listen to the stored audio file to play, and secondly, the user is directly connected to the service operator 10, which is provided by the service operator 10 converted It will be the case that you want to listen to the audio file you want from the contents DB for sale.

In addition, the wireless Internet server system 200 of the service operator 10 is primarily charged to the user 20 by using the billing processing system 230, the user 20 to the user DB 120 Will update your purchase history. That is, when the same user 20 is connected to the wireless Internet server system 200 through the user's mobile phone 400, the wireless Internet server system 200 is provided by the mobile phone 400 of the user 20 Refer to unique information (mobile phone number, mobile phone model, etc.) or user personal information recorded by the user registration procedure, and internally authenticate the same user 20, and then check the contents of contents purchased by the authenticated user. By showing through the virtual storage space 220 allows for already purchased content can be used without a repurchase procedure.

The virtual storage space 220 is not a storage device that is physically allocated for each user 20, unlike the user storage space 110 described above, the user 20 is a user mobile phone 400. When the user 20 accesses the content, the user 20 purchases the contents by referring to the user DB 120 and the content for sale DB 210 as if they are stored in the storage space. Because of the insufficient memory capacity of the user's mobile phone 400, you will enjoy the benefit of being provided with a virtual storage space 220 to solve the problem that could not be stored all, from the perspective of the service operator 10 does not allocate physical storage devices It can provide a useful benefit to the user without reducing the cost and can increase the satisfaction of the user (20).

1 and 2 have been described with reference to the preferred embodiment of the present invention, those skilled in the art can be variously modified and changed within the scope without departing from the spirit or prospects of the present invention. It should be understood that such modified embodiments should fall within the appended claims of the present invention.

First, when the user wants to receive various audio services through a mobile phone, the user can use the technology of the present invention to receive an improved audio quality through a dedicated voice codec suitable for an existing voice call.

Second, through the present invention, the user can directly listen to the various audio files that he / she wants to listen to on the mobile phone, and can increase the user's convenience because the user can continue to use the purchased content.

Claims (8)

Audio file converting means for converting a general audio file and reproducing the audio codec for mobile phones; Storage means for converting the audio file through the audio file converting means and storing the converted audio file; And a server means for transmitting the audio file requested by the user among the converted audio files stored in the storage means to the user mobile phone through a communication network. The method of claim 1, And the storage means is a content DB for sale that sells the converted audio file to a user. The method of claim 2, When the user purchases an audio file from the content DB for sale, the server means automatically creates a virtual storage space for the user using the unique information of the user at the time of purchase, and transmits the corresponding file purchased by the user to the user. By inputting the information of the file in the virtual storage space for the user, the audio for the mobile phone, characterized in that the user authenticated to access the corresponding virtual storage space to download or stream the desired file without repurchase procedure Service system. The method of claim 1, The audio file converting means includes correction means for correcting the audio so that the audio signal can be reproduced similarly to the original audio in a voice-only codec for a mobile phone; And audio encoding means for encoding the corrected audio signal into data in a form recognizable by a voice-only codec for a mobile phone. The method of claim 4, wherein The correction means is an audio service system, characterized in that for correcting the distortion portion for each frequency on the basis of the processing process of the voice-only codec for mobile phones and the nature of the reproduction frequency. The method of claim 1, The converted audio file stored in the storage means, the audio service system for a mobile phone, characterized in that the user directly converts the audio file through the audio file conversion means and stored. An authentication step of authenticating that the registered user is himself, Converting the audio file purchased by the authenticated user so that the audio file can be played in a voice codec for a mobile phone and storing the same in a storage space; And a transmitting step of transmitting the stored audio file to a user mobile phone according to a request of an authenticated user. Converting the audio file so that it can be played in a voice codec for a mobile phone through an audio file conversion program, and storing the same; Transmitting an audio file playing program for playing the converted audio file to the user when the user connects to the server; And when the user selects any one of the converted audio files, transmitting the selected audio file to the user mobile phone.