KR100818746B1 - System and method for providing karaoke service through communication network - Google Patents

Abstract

The present invention comprises a terminal having a client-server structure and a karaoke server through a communication network, and receiving a song data requested by a user from a karaoke server in a terminal for providing a karaoke service through a communication network in a karaoke service. The karaoke server includes a plurality of MIDI files having a low capacity MIDI file which reduces the size of the command field by removing the unnecessary index fields and unnecessary command fields from the standard MIDI standard for song data, lyrics data, and title data. The karaoke data is stored in a database stored in the database, the terminal is karaoke through a wireless communication network equipped with a karaoke player program for decoding and playing the song data consisting of a low-capacity MIDI file received from the karaoke server A service providing system and a karaoke service providing method using the system are provided.

Karaoke, Network, MIDI File

Description

System and method for providing karaoke service through telecommunication network {System and method for providing karaoke service via a network}

1 is a schematic configuration diagram of a system for providing karaoke service through a wireless communication network according to the present invention.

FIG. 2 is a block diagram of the karaoke server shown in FIG. 1.

FIG. 3 is a block diagram of the portable terminal shown in FIG. 1.

4 is a functional block diagram of a karaoke player program mounted on the portable terminal shown in FIG.

FIG. 5 illustrates a MIDI file format according to a general standard MIDI standard. FIG.

6 is a diagram illustrating a MIDI file format applied to a system and a method according to the present invention.

7 is an exemplary view comparing the music data of the MIDI file and the music data of the MIDI file according to the standard MIDI standard applied to the present invention.

8A to 8C are exemplary views comparing file sizes of a MIDI file according to a MIDI file and a standard MIDI standard applied to the present invention.

9 is a flowchart illustrating an operation of a karaoke service by a terminal device in a karaoke service providing system through a communication network according to the present invention.

10 is an exemplary view illustrating a karaoke service execution screen menu implemented in a terminal in a karaoke service providing system through a communication network according to the present invention.

FIG. 11 is a flowchart showing in more detail the song data decoding step shown in FIG.

FIG. 12 is a detailed flowchart illustrating the background image output step shown in FIG. 9.

<Explanation of symbols for the main parts of the drawings>

10: terminal 11: karaoke server

12: communication network 20: communication unit

21: user authentication unit 22: song search unit

23: file transfer unit 25: database (DB) unit

24: encoding unit 30: communication unit

      31: central control unit 32: storage unit

      33: audio output driver 34: speaker

35: display driver 36: display

37: audio input driver 38: microphone

The present invention relates to a system and method for providing a karaoke service in real time to a portable client terminal (hereinafter referred to as a "terminal") connected to a karaoke server via a wired communication network and / or a wireless communication network.

Recently, karaoke has become a popular entertainment for all ages, regardless of class or status. However, in order to use karaoke, you need to pay a certain amount of money by visiting a store that can use karaoke equipment. In addition, a karaoke system has been developed for home use and commercial use by using a disc medium such as a compact disc or by using a sound source chip module. However, each time a new song is released, the karaoke system continues to be used. There is a hassle to buy.

On the other hand, as the wired communication technology is developed and the Internet is widely used as a wired communication network, using a wired terminal such as a computer capable of internet communication, it is connected to a karaoke server having a database of various karaoke song data, and conveniently provides karaoke services. It became available. However, in this case, there is a limitation that the karaoke service can be used only in a limited space where a wired terminal capable of internet communication is installed.

In order to overcome these spatial limitations, a technique has been proposed to use a karaoke service by accessing a karaoke server through a wireless communication network using a mobile terminal.

As described above, in a karaoke service through a wireless communication network or a karaoke service through a wired communication network, a song data stored in a karaoke song data database of a karaoke server is composed of a MIDI file based on a standard MIDI standard. Song data is provided to the terminal. The MIDI file according to the standard MIDI standard contains unnecessary command fields and has a problem in that the file size is large because the size of the command fields is unnecessarily large.

As such, when the size of the MIDI file provided to the wired terminal and the portable terminal is increased, there is a disadvantage in that the database capacity is increased on the karaoke server side, and there is a disadvantage in that traffic increases on the communication network side. In addition, the terminal side has a disadvantage that it takes a long time to download the song data of the MIDI file requested to the karaoke server.

In particular, since data communication through a wireless communication network using a mobile terminal usually pays the communication fee in units of data packets, the user should pay separately from the karaoke service fee when the song data of the MIDI file is large in size. There is a problem that the communication usage fee is high. This has become a factor to limit the activation of karaoke service through a wireless communication network.

Accordingly, the present invention has been made to solve the above-mentioned problems, and in the implementation of karaoke service in the terminal by receiving song data from the karaoke server through a wired communication network and / or a wireless communication network using a terminal, It is an object of the present invention to provide a system and method for providing a karaoke service through a communication network that can reduce the database capacity and reduce the traffic of the communication network.

In addition, the present invention is to provide a system and method for providing a karaoke service through a communication network that can shorten the time it takes to download the song data requested to the karaoke server via a wired communication network and / or a wireless communication network using a terminal There is a purpose.

In addition, the present invention is a system and method for providing karaoke service through a communication network that can reduce the communication usage fee for the song data provided to the terminal in accordance with the selection request to the karaoke server through the wired and / or wireless communication network using the terminal Its purpose is to provide another.

In order to achieve the above object, a system for providing a karaoke service through a communication network according to the present invention includes a terminal having a client-server structure and a karaoke server through a communication network, and transmits song data requested by a user from a karaoke server to a terminal. In the karaoke service providing system through a communication network providing a karaoke service received, the karaoke server to remove the unnecessary index field and unnecessary command field in the standard MIDI standard for the song data, lyrics data and title data, and to reduce the size of the command A plurality of song data consisting of a low-capacity MIDI file having a small command field size is reduced and stored in a database. The terminal decodes song data consisting of a low-capacity MIDI file received from the karaoke server. The Karaoke player program to is characterized in that mounted.

In order to achieve the above object, a method of providing a karaoke service through a communication network includes a terminal having a client-server structure and a karaoke server through a communication network, and receives song data requested by a user from a karaoke server at a terminal. In the karaoke service providing system through a communication network that provides a system, unnecessary index fields and unnecessary command fields are removed from the standard MIDI standard for song data, lyrics data, and title data, and the command field size is reduced by reducing the size of the command field. A first step of databaseting song data comprising a low-capacity MIDI file on the karaoke server; A second step of requesting and downloading predetermined song data of a low capacity MIDI file from the terminal to the karaoke server; And a third step of decoding the downloaded song data of the low-capacity MIDI file by the karaoke player program, audio output of the song data, and screen output of lyrics data and title data.

Here, the unnecessary index field includes an index field indicating that the lyrics data starts, an index field indicating that the song data starts, and an index field indicating that the title data starts, and the unnecessary command field is 0 seconds. Contains a delay command field to run the next command.

Hereinafter, a preferred embodiment of a system and method for providing a karaoke service through a communication network according to the present invention will be described in detail with reference to the accompanying drawings.

In the following embodiments, only the karaoke service method through a wireless communication network is described using a portable terminal for the purpose of simplicity of explanation. However, the present invention uses a wired terminal such as a personal computer to perform karaoke through a wired communication network such as the Internet. Applicability to the service method as well will be readily understood by those skilled in the art from the following description. Therefore, in the following description, description of the karaoke service method through the wired communication network using the wired terminal will be omitted.

1 is a schematic configuration diagram of a system for providing karaoke service through a wireless communication network according to the present invention.

As shown in the figure, the karaoke service providing system through a wireless communication network according to the present invention is composed of a plurality of mobile terminals (10, 10-1), karaoke server 11 and a wireless communication network (12).

The wireless communication network 12 is a wireless data communication network such as a wireless LAN network or a wireless broadband network.

The karaoke server 11 is standardized to a lower capacity than the song data of the MIDI file according to the existing standard MIDI standard as the karaoke song data (hereinafter referred to as "low-capacity MIDI file") developed by the inventor of the present invention. Storing and managing various song data in a database, and converting the song data of the low-capacity MIDI file requested by the mobile terminal 10 or 10-1 according to a desired communication standard and carrying the corresponding mobile data through the wireless communication network 12. Provided to the terminals 10 and 10-1.

In addition, the karaoke server 11 stores a dedicated karaoke player program for accessing the karaoke server 11 from the mobile terminal 10, 10-1, selecting a desired song, and playing a low-capacity MIDI file downloaded accordingly. In response to a download request from the mobile terminals 10 and 10-1, the dedicated karaoke player program is provided to the mobile terminals 10 and 10-1.

The portable terminals 10 and 10-1 are portable wireless communication terminals, such as PDAs (Personal Digital Assistants) or cellular phones, which can be connected to the wireless communication network. The portable terminals 10 and 10-1 are equipped with a dedicated karaoke player program downloaded from the karaoke server 11. This dedicated karaoke player program is driven by a user's operation to communicate with the karaoke server 11, and the user desires song data among song data of low-capacity MIDI files built in a database of the karaoke server 11. The mobile terminal provides a karaoke service by decoding a low-capacity MIDI file provided according to the music selection request.

FIG. 2 is a detailed configuration diagram of the karaoke server 11 shown in FIG. 1. The karaoke server 11 of the present invention has a communication unit 20, user authentication unit 21, song search unit 22, file transfer unit 23, encoding unit 24 and database unit 25 in terms of functionality It is configured to include.

The communication unit 20 establishes a connection with the wireless terminals 10 and 10-1 through the wireless communication network 12 in response to a request from the wireless terminals 10 and 10-1 and the wireless terminals 10 and 10-1. And disconnect when all work is done. The communication unit 20 is in charge of matters for communication with the wireless terminals 10 and 10-1.

When the user accesses the karaoke server 11 using the wireless terminals 10 and 10-1, the user authentication unit 21 is pre-registered in the database unit 25 to select only the user who has received service authentication. The user authentication is performed so that the user can use the karaoke service only for the registered user.

The song search unit 22 is pre-stored in the database unit 25 which is divided into song number, song title, and singer information for the song list request requested by the user using the wireless terminal 10, 10-1. Reads the song information list and transmits to the wireless terminal of the user through the communication unit 20.

The file transmission unit 23 reports the song information list provided to the wireless terminal 10, 10-1, and as the user requests selection of a predetermined song, the song data of the low-capacity MIDI file corresponding to the selected song is requested. Reads from the database unit 25 and transmits to the wireless terminal of the user through the communication unit 20. In addition, if there is a request for downloading a dedicated karaoke player program from the wireless terminals 10 and 10-1, the corresponding karaoke player program is read from the database unit 25 and transmitted to the wireless terminal of the user through the communication unit 20. It also plays a role.

The encoding unit 24 encodes a song in order to provide song data of a low-capacity MIDI file provided to the karaoke service of the present invention as a wireless terminal and stores the song data of the encoded low-capacity MIDI file in the database unit 25. It is a configuration to be stored in. Encoding process in the encoding unit 24 according to the present invention receives the song data, lyrics data and title data according to the standard MIDI standard constituting a single song, while following the existing standard MIDI standard while the existing standard MIDI Song data included in one song, while removing unnecessary command fields from the song data and lyrics data according to the standard, and also reducing the size (byte) of the command inserted into the used command field (that is, reducing the command field size). Converts lyrics data and title data into a single MIDI file.

The database unit 25 stores the song data encoded by the encoding unit 24 in a database, and stores and manages the song information list for the stored song data and subscribes to a karaoke service according to the present invention. User authentication information for one user and a dedicated karaoke player program mounted on the terminal 10 for configuring a user interface for the karaoke service according to the present invention are also stored and managed.

Meanwhile, the karaoke server 11 according to the present invention compresses the song data, the song information list, the dedicated karaoke player program, etc. by a general-purpose compression algorithm, and transmits them to the wireless terminal 10 through the wireless communication network 12 as necessary. It may be configured.

FIG. 3 is a block diagram of the portable terminal shown in FIG. 1. As shown in the figure, the portable terminal 10, 10-1 according to the present invention is the communication unit 30, the central control unit 31, the storage unit 32, the audio output driver 33, the speaker 34 And a display driver 35, a display 36, an audio input driver 37, a microphone 38, and a key input unit 39.

The communication unit 30 is a configuration for establishing a connection with the karaoke server 11 through the wireless communication network 12 and performing communication according to the communication standard of the communication network, the wireless communication network 12 is a wireless LAN In the case of the Internet network, it may be configured as a wireless LAN communication module, and in the case where the wireless communication network 12 is a portable Internet network, it may be configured as a WiBro communication module.

The central control unit 31 may be configured as a central processing unit (MCU) of the terminal, and as the dedicated karaoke program according to the present invention is driven by the user's operation from the karaoke server 11 by the dedicated karaoke program Control processing such as decoding the received song data is performed.

The storage unit 32 stores an operation program for operating the terminal and the dedicated karaoke player program, and temporarily stores song data received from the karaoke server 11 through the communication unit 30. In addition, the storage unit 32 may be exposed as a background screen on the screen 80 (see FIG. 10) of the karaoke player (see FIG. 10) displayed on the display 36 when the karaoke player program is driven in the corresponding terminal. Still image data and / or moving image data may be stored. The still image data and / or video data stored in the storage unit 32 may be set to be displayed on the karaoke player's screen 80 (see FIG. 10) through the environment setting of the karaoke player.

The audio output driver 33 outputs the song data extracted from the song data decoded by the central controller 31 to the speaker 34 under the control of the karaoke player program.

The display driving unit 35 causes the central control unit 31 to display the karaoke player (see FIG. 10) on the display 36, and further includes lyrics data extracted from song data decoded by the central control unit 31. Title data (which may include song name, writer name, composer name, singer name, etc.) is displayed on the screen 80 (see FIG. 10) of the karaoke player (see FIG. 10) displayed on the display 36 under the control of the karaoke player program. The lyrics data and title data are displayed together with the preset background screen according to the environment setting.

The audio input driver 37 receives the converted electrical signal through the microphone 38 and transmits the converted electrical signal to the central controller 31. The voice signal input through the microphone 38 (that is, the song input signal input by the user) is recorded with the song or scores the song score according to the environment setting by the karaoke player program installed in the central controller 31. Are utilized.

The key input unit 39 includes key buttons of the wireless terminals 10 and 10-1 operated by the user, driving the karaoke player program installed in the central control unit 31 by the user, and environment of the karaoke player. It is used for operation of setting, selection, and execution.

Accordingly, the wireless terminal 10, 10-1 selects a desired song, requests data of the selected song to the karaoke server 11, and receives and stores song data received from the karaoke server 11 and plays the role. Do this.

4 is a functional block diagram of a karaoke player program mounted on the portable terminal shown in FIG. As shown in the figure, the karaoke player program is a software form that is downloaded from the karaoke server 11 through the communication network 12 and installed in the central control unit 31 of the wireless terminals 10, 10-1. In order to use the karaoke service, a song can be searched for and selected, and a player can play the song data provided by the karaoke server 11.

The karaoke player program includes a communication module 40, a processing module 41, a decoding module 42, a recording / score output module 43, a song search module 44, a lyrics output module 45, a song playing module ( 46).

The communication module 40 has a function of accessing and communicating with the karaoke server 11 through the communication unit 30 with the access information (for example, URL and IP address) for the karaoke server 11. The processing module 41 performs the overall control function of the driven karaoke player, and performs control according to a command input by the user. The decoding module 42 restores the song data of the low-capacity MIDI file received from the karaoke server 11 into song data, lyrics data, and title data through a decoding process. The recording / score output module 43 receives a song that the user calls through the microphone 38 in accordance with the reproduction of the song data of the song data received from the karaoke server 11 according to the user's selection, and inputs it to the storage unit 32. A function of storing a song score with the corresponding song data or comparing the song voice signal input through the microphone 38 with the song data currently being played by a normal karaoke score scoring algorithm to score a song score and display the score on the display. In charge of. When the song search module 44 requests a song search through the user's key input unit 39, the song search module 44 searches for a song number, a singer's name, a favorite song, and a newest song with respect to the song information list received from the karaoke server 11. It is in charge of the function to search for the desired song by the user. The lyrics output module 45 causes the lyrics data decoded by the decoding module 42 to be displayed on the screen 80 (see FIG. 10) of the karaoke player (see FIG. 10), and may be displayed according to a user's preference. It is in charge of converting font and color of lyrics data. The music playing module 46 plays the song data decoded by the decoding module 42 to be output through the speaker, and converts the volume, key, tempo, etc. of the song data to be output according to the user's preference. In charge of the function.

FIG. 5 is a diagram illustrating a MIDI file format according to a general standard MIDI standard, and FIG. 6 is a diagram showing a MIDI file format applied to a system and a method according to the present invention.

5 is a file structure (hereinafter, referred to as a 'standard MIDI file' 50) showing a standard MIDI format defined by the Japan Midi Standard Committee (JMSC) in Japan and the Midi Manufacture's Association (MMA) in the United States. The standard MIDI file structure consists of a header 58 and one or more tracks 59. In the standard MIDI file structure, the song data, title data, and lyrics data for one song are divided into individual tracks.

Here, the header start indication field (MThd) 51 is an index field indicating that the header starts. In other words, it can be seen that the contents of the header 58 start after the header start indication field MThd 51. The header data length field 52 indicates the length of the header data. The header data 53 includes a timebase for displaying the number of tracks 59, a format format according to the number of tracks, and a beat for a musical instrument, that is, four notes. The track start indication field (MTrk) 54 is an index field indicating that the track 59 starts. That is, after the track start command field MTrk 54, the contents of the track 59 are started. The track data length field 55 indicates the length of the track data 56 in the track. The track data 56 includes song data, title data and lyrics data for one song.

Referring to FIG. 6, the low capacity midi file 60 according to the present invention includes a header 68 and song data 69.

The header 68 indicates a timebase field 61 indicating a beat (ie, four notes) for the musical instrument, and a position of a title data area providing information of a song title, singer, and songwriter / songwriter. Title data position information field 62, title data length field 62-1 indicating the length of the title data area, lyrics data position field 63 indicating the position of the lyrics data area, length of the lyrics data area A song data length field 63-1, a song data position field 64 indicating the position of the song data area, and a song data length field 64-1 indicating the length of the song data area.

The song data 69 may include a title data area 65 providing information such as a title, a singer and a songwriter / composer in a text format, a language and type used for lyrics, a width / height of a character, A lyrics data area 66 including lyrics information such as the color of letters and the lyrics processing sequence, and a song data area 67 separately recording sound sources of the corresponding instrument for the song.

As described above, the MIDI file 60 according to the present invention integrates the song data 69 by encoding into a single file and deletes the repeated track start indication field MTrk of the standard MIDI file 50. When decoding, unnecessary repetition of the operation can be eliminated.

7 is an exemplary view comparing music data of a low capacity MIDI file and music data of a MIDI file according to a standard MIDI standard according to the present invention.

The song data of the MIDI file contains the data of the sound source of the corresponding instrument for the song separately. Delay time 1 (70), Sysex event (71), Delay time 0 (70-1), Tempo (72), Delay It consists of a repetitive configuration of commands of time2 70-2, MIDI event 73, and the like.

The Delay Times 70, 70-1, and 70-2 are located in front of each command to execute the corresponding command after a predetermined time elapses. For example, if Delay time 1 (70) having a delay time of 1 second comes before the instruction Sysex event (71), it means that the instruction Sysex event (71) is executed after 1 second. On the other hand, Delay time 0 (70-1) is to perform the next command after 0 seconds 0 seconds means nothing, but the standard MIDI file 50 is mandatory to use.

The Sysex event 71 divides the MIDI event 73, which is the actual sound source of the song data 67, into blocks, and temporarily stores the MIDI event 73, which is divided into blocks, into a buffer, and performs the music playing module. Command to transmit to (46).

The Tempo 72 commands to set the speed of the song data 67.

The MIDI event 73 represents the sound of the corresponding instrument for the song, and the more data of the MIDI event 73, the richer the tones can be produced. Also, the MIDI event 73 must be transmitted to the music player module 46 by the Sysex event 71 before the sound is output.

7A is a standard MIDI file 50, in which all delay times 70, 70-1, and 70-2 are included. Delay time has a small size, but cannot accumulate in the structure of repeated data.

On the contrary, b of FIG. 7 is music data of a low-capacity MIDI file according to the present invention. In this case, Delay time 0 (70-1) is deleted in such a manner as to maximize the inefficient use of delay time. It reduces the size occupied and at the same time reduces the time spent processing instructions by encoding and decoding.

In addition, the instruction structure for processing lyrics data according to the present invention is configured differently compared to a general MIDI file including a standard MIDI file 50. In other words, the structure is reduced by deleting unnecessary commands.

For example, the end instruction of the lyrics data in the standard MIDI file 50 composed of the Hex code is "FF 2F", but the end instruction of the lyrics data of the low capacity MIDI file 60 of the present invention composed of the Hex code is ED. The file size is reduced. In addition, the Delay command of the lyrics data in the standard MIDI file 50 exists for each instruction and the Hex code is composed of "00 FF 2F", while the lyrics data of the low-capacity MIDI file 60 of the present invention has a delay time. Delay instruction exists only if it is greater than 0. The hex code consists of "ED". Therefore, even in the case of the lyrics data of the low-capacity MIDI file 60 of the present invention, the unnecessary Delay0 command is deleted, and the size of the Delay command and the termination command is significantly smaller.

Accordingly, it can be seen that the low-capacity MIDI file according to the present invention has a smaller size of the overall song data 67 and the lyrics data 66 as compared with the conventional standard MIDI file.

8A to 8C are exemplary views comparing file sizes of a mid-size file and a mid-size file according to a standard MIDI standard applied to the present invention. Here, since the file format illustrated in FIGS. 8A to 8C is the same as the file format illustrated in FIGS. 5 and 6, duplicate description thereof will be omitted.

FIG. 8A is an exemplary diagram showing the structure and data size encoded by the low-capacity MIDI file 60 and the standard MIDI file 50 of the present invention for the song "Eternity" of the singer "Finkle". Here, the standard MIDI file 50 has a format 1 or 2 structure in which a plurality of tracks 59 are used to include titles, songs, and lyrics data. While the header (Timebase, Title data position, Title data length, Lyrics data position, Lyrics data length, Song data position, Song data length) of the low-capacity MIDI file 60 according to the present invention is 26 bytes, standard The header of the MIDI file 50 (MThd, header data length, header data, MTrk, title data length, MTrk, lyrics data length, MTir, song data length) is 36 bytes. Since the MTrk of the standard MIDI file 50 is repeated continuously each time the track starts, the size of the header is increased than the header 68 of the standard MIDI file 60. In addition, the time required for the decoding module 42 to process data for restoration in the terminal for the increased header field (eg, 'MTrk') is increased.

In addition, the title data, the lyrics data, and the song data of the low-capacity MIDI file 60 according to the present invention are deleted as compared to the standard MIDI file as described above. Comparing the size with the title data, lyrics data, and song data, the difference is 13 bytes, 145 bytes, and 2411 bytes, respectively, indicating that the size of the low-capacity MIDI file 60 according to the present invention is smaller. The song data with the largest data size in the entire file has many commands used, and accordingly many inefficient commands are deleted, so that the difference in the overall size is larger than the title data and the lyrics data. The difference between the entire files including the headers 58 and 68 is 2579 bytes. Thus, it can be seen that the inventive MIDI file 60 has a smaller file size than the standard MIDI file 50.

8B is an exemplary diagram showing the structure and data size encoded by the low-capacity MIDI file 60 and the standard MIDI file 50 of the present invention for the song "cool" by the singer "Maya". As described above, when only the music data occupying the largest file area in the standard MIDI file 50 and the low-capacity MIDI file 60 according to the present invention is compared, it represents a difference of 2002 bytes. It can be seen that the low-capacity MIDI file 60 is reduced by 2260 bytes compared to the standard MIDI file 50. The title data, lyrics data, and song data of the song 'eternity' and 'cool' song of FIG. 8a differ from each other because the length of the lyrics, the length of the song, and the number of instruments used are different. to be.

8C is an exemplary diagram showing the structure and data size of the song "Diamon" of the singer "Dana" encoded in the low-capacity MIDI file 60 and the standard MIDI file 50 of the present invention. As shown in FIG. 8A or FIG. 8B, when only the music data occupying the largest file area in the low-capacity MIDI file 60 according to the present invention is compared, a difference value of 3597 bytes is represented. Note that 3879 bytes are reduced compared to the standard MIDI file 50.

That is, referring to FIGS. 8A to 8C, the low-capacity MIDI file 60 according to the present invention reduces the size of the entire file by deleting an inefficient command and decreasing the command size. In addition, it will be appreciated that the longer the song is, the more the musical instrument is used, the greater the difference between the MIDI file 60 and the standard MIDI file 50 of the present invention.

9 is a flowchart illustrating an operation of a karaoke service performed by a terminal in a karaoke service providing system through a wired / wireless communication network according to the present invention. In the following description, descriptions of well-known technologies will be omitted.

9, a user connects to a karaoke server 11 through a wireless communication network 12 using a wireless terminal 10 to use a karaoke service, and requests a download of a dedicated karaoke player program. A dedicated karaoke player program is downloaded to the wireless terminal 10 and installed and stored in the storage unit 32 (step s100).

Then, if the user requests the execution of the installed dedicated karaoke player program, the central control unit 31 executes the karaoke player program stored in the storage unit 32 (step s101). Here, as the karaoke player program is executed by the central controller 31, the karaoke player as shown in FIG. 10 is displayed on the display 36.

Here, the karaoke player displayed on the screen as shown in Figure 10, the screen unit 80, the title data and lyrics data is displayed along with the background image, the user can select the desired song, the list of songs according to it is displayed in advance to reserve the song Song reservation section 81 to display a list of reserved songs, set the background image to be displayed, set the font and color of the lyrics data, etc. Recording file storage location path so that the user can record the song Environment setting unit 82 that can be set, the volume of the speaker 34 and the volume control of the microphone 38 and the function of adjusting the height and tempo of the song data to enable the user to select a song rhythm 83 And a playback unit 84 for playing, stopping, and recording song data.

Subsequently, the user inputs login information (for example, a user ID and password) for logging in to the karaoke server 11 to use the karaoke service by the user, and then enters the karaoke server 11. Request to access the karaoke service (step s102). Accordingly, the user is authenticated by the karaoke server 11 by the login information.

Thereafter, as a user who has received user authentication requests a song search through the key input unit 39, the central control unit 31 requests a song search from the karaoke server 11 by the song search module 44 of the karaoke player program. . Accordingly, the song search unit 22 of the karaoke server 11 transmits the song information list registered in the DB unit 25 classified into a song number, a singer name, a favorite song, and a newest song to the wireless terminal. The transmitted song information list is output for the user to view through the display 36 (step s103).

Thereafter, when the user finishes the song search using the song information list and selects the song through the key input unit 39 and plays the corresponding song by the playback unit 84, the central processing unit 31 performs the song search module (the karaoke player program). In step 44, the song data request signal including the information on the selected song is transmitted to the karaoke server 11 (step s104).

Accordingly, the file transfer unit 23 of the karaoke server 11 finds the song data corresponding to the song information included in the song data request signal in the database unit 25 and transmits the song data to the corresponding wireless terminal using the communication network 12. As a result, the song data is downloaded through the communication unit 30 of the wireless terminal and temporarily stored in the storage unit 32 (step s105). At this time, the song data registered in the database unit 25 is composed of one file of title data, lyrics data, and song data, and consists of a low capacity MIDI file in which unnecessary information is deleted.

Thereafter, the central processing unit 31 analyzes the header included in the song data of the low-capacity MIDI file temporarily stored in the storage unit 32 by the decoding module 42 of the karaoke player program, thereby reproducing the original song data and lyrics. The data and the title data are decoded (step s106).

Subsequently, the central processing unit 31 analyzes the decoded song data by the music playing module 46 of the karaoke player program and plays the music data based on each song playing command, and transmits the playing signal through the audio output driver 33. Control to output to the speaker 34 (step s107).

In addition, the central processing unit 31 analyzes the decoded lyrics data and title data by the lyrics output module 45 of the karaoke player program and generates and displays a text image signal based on the instructions contained in the title data and the lyrics data. Control to output to the display 36 via the drive unit 35 (step s108).

In addition, the central processing unit 31 checks whether the background image is preset and controls to output the background image to the display 36 through the display driver 35 according to the confirmed setting (step s109). The lyrics data / title data and the background image are synthesized and displayed on the screen 80 of the karaoke player shown in FIG. 10.

Thereafter, when the user sings in accordance with the song output through the speaker 34 while watching the lyrics displayed on the screen 80 of the karaoke player, the user's voice signal is input to the audio input driver 37 through the microphone 38. The audio data properly signal-processed by the audio input driver 37 is transmitted to the central controller 31. Accordingly, the central control unit 31 scores the song score through the known karaoke score algorithm by the recording / score output module 43 of the karaoke player program and outputs the scored score to the display 36 at the time when the song is finished. To control (S111). Accordingly, the song score is displayed on the screen 80 of the karaoke player.

The song is terminated or stopped during the performance is automatically deleted from the storage unit 32, if there is a reserved song immediately downloads the next song from the karaoke server 11 and repeats steps s106 to s111. If there is no reserved song, it waits for the next song input at the request of the user.

11 is a flowchart illustrating the song data decoding step of FIG. 9 in more detail.

Referring to FIG. 11, the decoding process is as follows. First, the song data 60 transmitted through the communication network 12 is temporarily stored in the storage unit 32, the central processing unit 31 is temporarily stored in the storage unit 32 by the decoding module 42 of the karaoke player program. The decoding process of the song data 60 of the stored low capacity MIDI file is performed.

The decoding module 42 reads the header 68 information of the song data 69 (step s200). The header 68 includes positional information and size information of the timebase 61, the title data 65, the lyrics data 66, and the song data 67 constituted as one file.

Thereafter, the decoding module 42 reads the position of the title data 65 based on the header 68 information, extracts information about a song title, singer, songwriter / composer, and extracts the extracted information from the lyrics output module ( And data processing to be performed (step S201).

Subsequently, the decoding module 42 extracts the lyrics data 66 by reading the position and length of the lyrics data based on the header 68 information. The decoding module 42 then reads the lyrics data 66 and calculates the delay time, the total size of the lyrics, and the like. The lyrics data 66 is converted into Unicode and then tabulated according to the delay time. The decoding module 42 then transfers the tabled lyrics data 66 to the lyrics output module 45 for processing (step s202).

Thereafter, the decoding module 42 reads the position and length of the song data based on the header 68 information to extract the song data 67. The composition of the tune data 67 is the same as that of b of FIG. 7, and the delay time 0-70-1 is deleted. By the sysex event 71, the song data in block units is sequentially stored in the buffer, and the block data temporarily stored in the buffer is transmitted to the music player module 46 (step s203). The title data 65 and the lyrics data 66 are output to the display 36 and the song data 67 are output through the speaker 34. At this time, the lyrics data 66 has the same delay time as the song data 67, and the decoding module 42 simultaneously outputs the lyrics data arranged in the table according to the delay time of the output song data. Fit.

12 is a flowchart illustrating the background image output step of FIG. 9 in more detail.

First, the karaoke player program of the central processing unit 31 checks whether the background image is set in the environment setting related to the background screen preset by the user (step s300).

If it is determined in step s300 that the background image is not set, the karaoke player program of the central processing unit 31 may display the lyrics data and the title data on the display 80 of the karaoke player displayed on the display 36 without the background image. The display driver 35 is controlled (step s305). Here, if it is determined that the background image is not set, the karaoke player program of the central processing unit 31 reads the default background image from the storage unit 32 and displays the karaoke player displayed on the display 36 together with the lyrics data and the title data. The display driver 35 may be controlled to be displayed on the screen 80.

If it is determined in step S300 that the background image is set, the karaoke player program of the central processing unit 31 checks whether the image input from the camera (not shown) mounted in the wireless terminal is set as the background image (step s301). ).

If it is confirmed in step 301 that the video input from the camera (not shown) is set as the background image, the karaoke player program of the central processing unit 31 is a video signal input from the camera (not shown) lyrics data and title data In addition, the display driving unit 35 is controlled to be displayed on the screen 80 of the karaoke player displayed on the display 36 (step s302).

On the other hand, if it is determined in step 301 that the image input from the camera (not shown) is not set as the background image, the karaoke player program of the central processing unit 31 stores the image data preset by the user 32. In step S303, the display driving unit 35 is controlled to be displayed on the screen 80 of the karaoke player, which is read out from the lyric data and the title data together with the lyrics data and the title data.

In addition, this invention is not limited to the above-mentioned specific Example, It can implement | transform and modify in various ways within the range which does not deviate from the summary of this invention. Especially. In the specific embodiment described above, the karaoke service method through a wireless communication network will be described using a portable terminal. However, the present invention is similarly applied to a karaoke service method through a wired communication network such as the Internet using a wired terminal such as a personal computer. It can be easily understood by those skilled in the art from the following description.

In addition, the scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described above, according to the present invention, when the song data is received from the karaoke server through a wired communication network and / or a wireless communication network using a terminal, and the karaoke service is implemented in the terminal, the song data and lyrics data constituting a single song In addition to removing unnecessary index fields and unnecessary command fields from the standard MIDI standard for the title data, and reducing the size of the command field by reducing the size of the commands, the song data composed of a mid-size MIDI file compared to the existing standard MIDI standard is stored in the karaoke server. By the database, the database capacity of the karaoke server side can be reduced, and the traffic of the communication network can be reduced.

In addition, according to the present invention, by using the low-capacity song data as described above, it is possible to shorten the time it takes to download the song data requested to the karaoke server via the wired communication network and / or wireless communication network, and also in the terminal Decoding time can be shortened by removing unnecessary index fields and unnecessary command fields during the decoding process.

In addition, according to the present invention, by using the low-capacity song data as described above, by using the terminal to request a selection of songs to the karaoke server through the wired communication network and / or wireless communication network to the communication usage fee for the song data provided to the terminal Can be reduced.

Claims (10)

In the karaoke service providing system comprising a terminal having a client-server structure and a karaoke server through a communication network, receiving the song data requested by the user from the karaoke server in the terminal to provide a karaoke service, The karaoke server includes a plurality of songs composed of a low-capacity MIDI file that reduces the size of the command field by removing the unnecessary index fields and unnecessary command fields from the standard MIDI standard for song data, lyrics data, and title data. Data is stored and managed in a database. The terminal is a karaoke service providing system through a communication network, characterized in that the karaoke player program for decoding and playing the song data consisting of a low-capacity MIDI file received from the karaoke server. The method of claim 1, The unnecessary index field includes an index field indicating that the lyrics data starts, an index field indicating that the song data starts, and an index field indicating that the title data starts, The unnecessary command field comprises a delay time command field to perform the next command after 0 seconds. The method according to claim 1 or 2, The communication network is a wireless data communication network, the terminal is a karaoke service providing system through a communication network, characterized in that the portable terminal that is accessible to the wireless data communication network. The method of claim 3, The wireless data communication network is a wireless LAN network or wireless Internet network (Wireless Broadband Internet) karaoke service providing system through a communication network, characterized in that. The method according to claim 1 or 2, The karaoke player program, A communication module for communicating with the karaoke server having access information to the karaoke server; A processing module for controlling the overall karaoke service function and performing control according to a command input by a user; A decoding module for restoring the song data of the low-capacity MIDI file received from the karaoke server into original song data, lyrics data, and title data through a decoding process; A score output module for receiving a song that the user calls according to the song data of the song data and scoring the song score by the karaoke score scoring algorithm to display the score; A song search module for performing a function of searching for a desired song by the user; A lyrics processing module for displaying lyrics data decoded by the decoding module; Karaoke service providing system through a communication network comprising a music playing module configured to play and output the song data decoded by the decoding module. The method of claim 5, The terminal is equipped with a camera, The karaoke player program, if it is set to use the input image from the camera as a background image in a predetermined configuration, characterized in that the screen to display the title data and lyrics data with the image input from the camera Karaoke service provision system. In the karaoke service providing system comprising a terminal having a client-server structure and a karaoke server through a communication network, receiving a song data requested by the user from the karaoke server in the terminal to provide a karaoke service, For song data, lyrics data, and title data, song data consisting of low-capacity MIDI files that reduce the size of the command field by reducing the size of the command by removing unnecessary index fields and unnecessary command fields from the standard MIDI standard is provided to the karaoke server. A first step of making a database; A second step of requesting and downloading predetermined song data of a low capacity MIDI file from the terminal to the karaoke server; And a third step of decoding the downloaded song data of the low-capacity MIDI file by the karaoke player program, audio outputting the song data, and outputting the lyrics data and the title data. How to provide karaoke service through. The method of claim 7, wherein The unnecessary index field includes an index field indicating that the lyrics data starts, an index field indicating that the song data starts, and an index field indicating that the title data starts, The unnecessary command field comprises a delay time command field to perform the next command after 0 seconds. The method according to claim 7 or 8, The communication network is a wireless LAN network or a wireless Internet network (Wireless Broadband Internet), The terminal is a karaoke service providing method through a communication network, characterized in that the portable terminal connected to the communication network. The method of claim 9, The terminal is equipped with a camera, In the third step, if the karaoke player program is set to output the input image from the camera as a background image in a preset configuration, the karaoke player program outputs the title data and lyrics data together with the image input from the camera. Karaoke service providing method through a communication network, characterized in that.

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