JP2014026183A - Karaoke synchronization performance system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system having a function of performing music selection reservation by using a personal portable terminal owned by a user, in which at least two karaoke performance terminals connected to a network are synchronized to start a performance of the same karaoke music almost at the same time.SOLUTION: In a karaoke synchronization performance system, a relay server 40 transmits music selection reservation information received from any one of personal portable terminals 60 of a recruiter and an applicant for a synchronization performance to karaoke performance terminals 80 shifted to a synchronization performance mode by synchronization performance mode transition means 102. Data arrival time measurement storage means 48 measures and stores a data arrival time of each of the karaoke performance terminals 80, and music selection reservation information relay means 47 transmits a performance start signal to each of the karaoke performance terminals 80 on the basis of a difference between the respective data arrival times. Once each of the karaoke performance terminals 80 receives the performance start signal, it starts a performance of a karaoke music based on the selection reservation information.

Description

  The present invention relates to a karaoke synchronized performance system, and in particular, uses a personal portable terminal as a remote controller for music selection reservation, and synchronizes at least two karaoke performance terminals connected to a network so that the same karaoke music can be played. The present invention relates to a system that can be played almost simultaneously.

  In a plurality of karaoke performance terminals connected to a network, a technique has been developed that enables the same karaoke music to be played at the same time (see, for example, Patent Document 1 and Patent Document 2). The technique described in Patent Document 1 connects a plurality of karaoke apparatuses with built-in computers to a host computer, and the computer includes a communication control device, a CPU, a scoring unit, and an I / O interface. The device is connected. In addition, a music selection device, an amplifier, a speaker, a microphone, and a display are connected to the playback device. The karaoke device is connected to the CPU via the communication control device of the host computer, and the scoring result storage unit, the access control unit, the scoring table creation unit, and the synchronous performance control unit are connected to the CPU via the I / O interface. Thus, the scoring results are compared between karaoke devices.

  The technique described in Patent Document 2 is a technique aimed at alleviating the uncomfortable feeling of performance due to communication delay in a network session. The session terminal described in Patent Document 2 includes performance playback means for playing back performance information, communication means for communicating with other session terminals, and back performance instruction means for instructing playback of back performance information. The back performance information instructed to be reproduced by the back performance instruction means is transmitted to another session terminal through the communication means, and corresponds to a communication delay time with another session terminal after the reproduction is instructed. A back performance control means for causing the performance playback means to start playback of the back performance information when the monitor delay time has elapsed, a user performance input means for inputting user performance information based on the user performance, and a user performance input means The input user performance information is transmitted to another session terminal through communication means, and the user performance information and other And a user playing control means for reproducing the play reproducing means other user's performance information received via the communication means from the cushion terminal.

Japanese Patent Laid-Open No. 7-210182 JP 2011-242560 A

  However, in a system in which a personal portable terminal is used as a remote control device for music selection reservation, in order to perform at least two karaoke performance terminals connected to the network synchronously and perform the same karaoke music at the same time, It is necessary to expand the music selection reservation function in the paired personal portable terminal, and no technology for such music selection reservation and synchronous performance start has been developed. Furthermore, for example, in order to enjoy the singing by simultaneously performing duet songs on separate karaoke performance terminals, the performance start timings at the respective karaoke performance terminals are substantially the same so that users of each karaoke performance terminal do not feel uncomfortable. It is necessary to let

  Also, in a plurality of karaoke performance terminals connected via a network, for example, even if performance start signals are transmitted simultaneously from a server for instructing performance start, the performance start signals may not reach each karaoke performance terminal at the same time. is there. That is, the performance start signal arrives in accordance with the traffic on the communication line between the server and each karaoke performance terminal, the data processing capability of the network environment (for example, LAN device) to which each karaoke performance terminal is connected, etc. It is common for time to change.

  The technique described in Patent Document 2 is intended to eliminate communication delay in each session terminal in a network session system, but it is assumed that a personal portable terminal is used as a remote controller for music selection reservation. In addition, there is no description about performing synchronized performance by matching recruiters and applicants for synchronized performance in at least two karaoke performance terminals connected to the network, so that this technique can be directly applied to the present invention. Can not. Furthermore, the data arrival time in the network is generally converted momentarily according to the traffic on the communication line, etc., but the technique described in Patent Document 2 does not consider this point at all.

  The present invention has been proposed in view of the above-described circumstances, and uses at least two karaoke performance terminals connected to a network in consideration of data arrival time in a network using a personal portable terminal as a remote controller for music selection reservation. It is an object of the present invention to provide a system capable of performing the same karaoke music composition at substantially the same time in synchronization.

  The karaoke synchronized performance system of the present invention has the following features in order to achieve the above-described object. That is, the karaoke synchronized performance system of the present invention has a function of making reservation selection of karaoke music at each karaoke performance terminal by relaying music selection reservation information input from a personal portable terminal possessed by the user with a relay server. In addition, a synchronized performance mode is provided in which at least two karaoke performance terminals connected to the network are synchronized so that the same karaoke music piece can be played simultaneously.

  This karaoke synchronized performance system includes synchronized performance recruitment information transmitting means, synchronized performance recruitment information registering means, browsing request signal transmitting means, browsing request signal receiving means, synchronized performance recruitment information transfer means, and synchronized performance recruitment information reception. Means, synchronous performance application information transmission means, synchronous performance information transmission means, synchronous performance information display means, synchronous performance mode transition means, synchronous performance information acquisition means, music selection reservation information transmission means, and music selection reservation information relay Means and data arrival time measurement storage means.

  Synchronous performance recruitment information transmission means, browsing request signal transmission means, synchronous performance recruitment information reception means, synchronous performance application information transmission means, synchronous performance information acquisition means, and music selection reservation information transmission means are functions of a personal portable terminal. As realized. Synchronous performance solicitation information registration means, browsing request signal reception means, synchronous performance solicitation information transfer means, synchronous performance information transmission means, data arrival time measurement storage means, and music selection reservation information relay means are functions of the relay server. Realized. The synchronized performance information display means and the synchronized performance mode transition means are realized as functions of the karaoke performance terminal.

  Synchronous performance recruitment information transmitting means includes a request for a synchronous performance from the recruiter's personal mobile terminal to the relay server, and includes the identification information of the karaoke performance terminal linked to the personal mobile terminal. It is a means for transmitting information. The synchronous performance recruitment information registration means is means for receiving the synchronous performance recruitment information and registering (storing) it in a predetermined storage area.

  The browsing request signal transmission means is a means for transmitting a browsing request signal for synchronous performance recruitment information from the applicant's personal portable terminal to the relay server. Upon receiving the synchronous performance recruitment information browsing request signal, the synchronous performance recruitment information transfer means sends the registered synchronous performance recruitment information to the personal mobile terminal of the applicant who has transmitted the synchronous performance recruitment information browsing request signal. It is a means for transferring.

  The synchronous performance solicitation information receiving means is means for receiving the synchronous performance solicitation information from the relay server. Synchronized performance application information transmission means is linked to the fact that the applicant wishes to participate in the synchronized performance based on the synchronized performance recruitment information from the personal portable terminal to the relay server, and is associated with the personal portable terminal. This is means for transmitting synchronized performance application information including identification information of a karaoke performance terminal.

  The synchronized performance information transmitting means, when receiving the synchronized performance application information, indicates that the synchronized performance is to be performed on the karaoke performance terminal associated with the recruiter's personal portable terminal, and is associated with the applicant's personal portable terminal. Synchronized performance information including identification information of the attached karaoke performance terminal is transmitted, and the executor's personal mobile terminal is instructed to perform synchronous performance on the karaoke performance terminal linked to the applicant's personal mobile terminal. It is a means for transmitting the synchronous performance information containing the identification information of the karaoke performance terminal linked | related to.

  The synchronized performance information display means is a means for displaying the synchronized performance information at each karaoke performance terminal when the synchronized performance information is received. The synchronized performance mode transition means is a means for causing each karaoke performance terminal that has received the synchronized performance information to transition to the synchronized performance mode. The synchronized performance information acquisition means is means for acquiring the displayed synchronized performance information and storing it in a predetermined storage area.

  The music selection reservation information transmission means is the karaoke linked to the personal portable terminal and the synchronized performance information stored in the predetermined storage area from the personal portable terminal of either the recruiter or the applicant to the relay server. This is means for transmitting music selection reservation information including the identification information of the performance terminal and the music ID of the music selection music.

  The data arrival time measurement storage means transmits a data arrival time confirmation signal to each karaoke performance terminal and measures a time until a response signal for the data arrival time confirmation signal is returned from each karaoke performance terminal. And it is a means for memorize | storing the data arrival time in each karaoke performance terminal based on the said measurement time. The data arrival time measurement storage means preferably confirms the data arrival time at the karaoke performance terminal at every predetermined timing (for example, every time music selection reservation information is received).

  The music selection reservation information relay means delays the transmission timing sequentially from the karaoke performance terminal having the longest data arrival time in descending order according to the difference time between the longest data arrival time and the other data arrival times among the data arrival times. Thus, the music selection reservation information is transmitted to each karaoke performance terminal having identification information included in the received music selection reservation information.

  In addition to the configuration described above, the karaoke synchronized performance system of the present invention includes synchronized performance applicant presence information transmission means, synchronized performance applicant presence information display means, synchronized performance permission information transmission means, and synchronized performance information transmission permission means. Can be further provided.

  The synchronized performance applicant presence information transmission unit and the synchronized performance information transmission permission unit are realized as functions of the relay server. The synchronized performance permission information transmitting means is realized as a function of the personal portable terminal. The synchronized performance applicant presence information display means is realized as a function of the karaoke performance terminal.

  When the synchronized performance applicant presence information transmitting means receives the synchronized performance application information from the applicant's personal portable terminal, the synchronized performance applicant presence information transmitting means transmits the synchronized performance applicant presence information to the karaoke performance terminal linked to the recruiter's personal portable terminal. It is a means for transmitting. The synchronized performance applicant presence information display means is a means for displaying synchronized performance applicant presence information on the karaoke performance terminal linked to the recruiter's personal portable terminal. The synchronized performance permission information transmitting means is means for transmitting the synchronized performance permission information to the relay server when the recruiter instructs permission of participation in the synchronized performance based on the synchronized performance applicant presence information.

  The synchronized performance information transmission permission means is a means for permitting transmission of the synchronized performance information in the synchronized performance information transmitting means when the synchronized performance permission information is received.

  According to the karaoke synchronized performance system of the present invention, a personal portable terminal is used as a remote control device for music selection reservation, and a reservation operation is performed on either the personal portable terminal of the recruiter or applicant of the synchronized performance. The karaoke performance terminals of both the applicant and the applicant can make a reservation for selecting the same karaoke music and can start playing the karaoke music almost simultaneously in consideration of the data arrival time in the network.

  In other words, by using the karaoke synchronized performance system of the present invention, at least two karaoke performance terminals connected to the network are synchronized, and when the same karaoke piece is played simultaneously, the difference in data arrival time in the network is eliminated. By doing so, the performance start timing in each karaoke performance terminal can be made to correspond substantially so that the user of each karaoke performance terminal may not feel uncomfortable. Thereby, for example, duet music can be played simultaneously on separate karaoke performance terminals to enjoy singing.

The block diagram which shows the structure of the karaoke synchronous performance system which concerns on embodiment of this invention. The timing chart which shows the procedure of the synchronous performance in the karaoke synchronous performance system which concerns on embodiment of this invention.

  Hereinafter, an embodiment of a karaoke synchronized performance system of the present invention will be described with reference to the drawings. 1 and 2 show a karaoke synchronized performance system according to an embodiment of the present invention, FIG. 1 is a block diagram of the karaoke synchronized performance system, and FIG. 2 is a timing chart showing a procedure of synchronized performance.

  The karaoke synchronized performance system according to the embodiment of the present invention includes a synchronized performance recruitment information transmitting means 65 and a synchronized performance as a means for setting the synchronized performance applicant and executing the synchronized performance, as shown in FIG. Recruitment information registration means 43, browsing request signal transmission means 66, browsing request signal reception means 44, synchronous performance recruitment information transfer means 45, synchronous performance recruitment information reception means 67, synchronous performance application information transmission means 68, Synchronous performance information transmission means 46, synchronous performance information display means 101, synchronous performance mode transition means 102, synchronous performance information acquisition means 69, music selection reservation information transmission means 61, music selection reservation information relay means 47, data arrival A time measurement storage means 48.

  Synchronous performance recruitment information transmission means 65, browsing request signal transmission means 66, synchronous performance recruitment information reception means 67, synchronous performance application information transmission means 68, synchronous performance information acquisition means 69, and music selection reservation information transmission means 61 This is realized as a function of the personal portable terminal 60.

  Synchronous performance recruitment information registration means 43, browsing request signal reception means 44, synchronous performance recruitment information transfer means 45, synchronous performance information transmission means 46, music selection reservation information relay means 47, and data arrival time measurement storage means 48 This is realized as a function of the relay server 40.

  The synchronized performance information display means 101 and the synchronized performance mode transition means 102 are realized as functions of the karaoke performance terminal 80.

  Further, as shown in FIG. 1, the karaoke synchronized performance system 10 of the present embodiment includes a synchronized performance applicant presence information transmitting unit 49, a synchronized performance applicant presence information display unit 103, and a synchronized performance permission information transmitting unit 70. Further, it is possible to further include synchronized performance information transmission permission means 50.

  The synchronized performance applicant presence information transmitting means 49 and the synchronized performance information transmission permitting means 50 are realized as functions of the relay server 40, and the synchronized performance permission information transmitting means 70 is realized as a function of the personal portable terminal 60. The applicant presence information display means 103 is realized as a function of the karaoke performance terminal 80. In the present embodiment, the synchronous performance applicant presence information transmission means 49, the synchronous performance information transmission permission means 50, the synchronous performance permission information transmission means 70, and the synchronous performance applicant presence information display means 103, which are additional means, are shown in FIG. In the block diagram of FIG. The function of each means will be described in detail later.

<Karaoke synchronized performance system>
As shown in FIG. 1, in the karaoke synchronized performance system 10 according to the embodiment of the present invention, the relay server 40 and a plurality of karaoke performance terminals 80 are connected to each other via the communication network 20 (the Internet in this embodiment). Has been. The communication network 20 can use a public telephone line, a dedicated telephone line, an optical communication line, a LAN, etc., but it is difficult for a third party to infiltrate the network, to listen to and alter data, and to not monopolize the bandwidth. It is preferable to use a VPN constituted by the Internet because it is an inexpensive communication network.

<Relay server>
The relay server 40 is a relay server 40 that performs music selection reservation using the personal portable terminal 60 and relays information related to the synchronized performance. As shown in FIG. 1, the server control means 41, the transmission / reception means 42, the synchronized performance recruitment information. A registration means 43, a browsing request signal receiving means 44, a synchronized performance recruitment information transfer means 45, a synchronized performance information transmission means 46, a music selection reservation information relay means 47, and a data arrival time measurement storage means 48 are provided. Furthermore, in this embodiment, it is possible to provide a synchronous performance applicant presence information transmission unit 49 and a synchronous performance information transmission permission unit 50 as functional units of the relay server 40. Note that a server having another function may have a function as the relay server 40. In this case, server virtualization technology or the like can be used.

<Server control means / transmission / reception means>
The server control means 41 is a means for comprehensively controlling the relay server 40, and is configured to include a CPU and its peripheral devices. The control function is achieved when the CPU or the like operates according to a program stored in a ROM or the like. It comes to show. The transmission / reception means 42 is means for transmitting / receiving various data to / from each karaoke performance terminal 80, and is constituted by a communication circuit and a program for maintaining the consistency of the communication system in the communication network 20 (Internet). The

<Synchronous performance recruitment information registration means>
The synchronous performance solicitation information registration means 43 includes a program for receiving synchronous performance solicitation information from the recruiter's personal portable terminal 60 and registering it in a predetermined storage area. That is, the synchronous performance recruitment information registration means 43 receives the synchronous performance recruitment information transmitted from the personal portable terminal 60 of the user (recruiter) who desires the synchronous performance, and stores the synchronous performance recruitment information in a predetermined storage. Register (store) in an area (for example, HDD). Further, when the synchronous performance recruitment information registration means 43 receives the synchronous performance recruitment information, the synchronous performance recruitment information may be disclosed in a predetermined public area. For example, it is possible to set a synchronous performance recruitment page in the relay server 40, and display information or the like for recruiting users to shift to the synchronous performance mode on the synchronous performance recruitment page.

<Browsing request signal receiving means>
The browsing request signal receiving means 44 includes a program for receiving a browsing request signal for synchronous performance recruitment information from the applicant's personal portable terminal 60. That is, the user who becomes an applicant can confirm the presence of the recruiter of the synchronous performance by transmitting the browsing request signal for the synchronous performance recruitment information to the relay server 40, and recruit the synchronous performance. If there is a person, the information can be acquired.

<Synchronous performance recruitment information transfer means>
When the synchronous performance solicitation information transfer means 45 receives the browsing request signal for the synchronous performance solicitation information, the synchronous performance solicitation information transfer means 45 registers the synchronous performance solicitation for the applicant's personal portable terminal 60 that has transmitted the synchronous performance solicitation information browsing request signal. Consists of a program for transferring information. That is, when a browsing request signal is received from an applicant who wishes to participate in the synchronized performance, the applicant can transfer the synchronized performance solicitation information to the personal portable terminal 60 of the applicant so that the applicant can perform the synchronized performance. Various information regarding recruitment can be obtained.

<Synchronous performance information transmission means>
When the synchronized performance information transmitting means 46 receives the synchronized performance application information, the synchronized performance information transmitting means 46 performs the synchronized performance on the karaoke performance terminal 80 linked to the recruiter's personal mobile terminal 60 and the applicant's personal mobile phone. Synchronous performance information including identification information (mobile terminal ID) of the karaoke performance terminal 80 associated with the terminal 60 is transmitted, and synchronized with the karaoke performance terminal 80 associated with the applicant's personal portable terminal 60. It consists of a program for transmitting synchronized performance information including the performance information and identification information (mobile terminal ID) of the karaoke performance terminal 80 linked to the personal mobile terminal 60 of the recruiter. That is, the synchronized performance information includes information indicating that the synchronized performance is performed and identification information (mobile terminal ID) of the karaoke performance terminal 80 linked to the personal mobile terminal 60 of the recruiter or applicant. When a music selection reservation is made using the personal portable terminal 60 of the user (applicant or user) who acquired the synchronized performance information, the karaoke performance terminal 80 of the user (applicant or user) participating in the synchronized performance is used. Synchronized performance can be performed.

<Data arrival time measurement storage means>
The data arrival time measurement storage means 48 transmits a data arrival time confirmation signal to each karaoke performance terminal 80, and until a response signal for the data arrival time confirmation signal is returned from each karaoke performance terminal 80. It consists of a program for measuring and storing the data arrival time at each karaoke performance terminal 80 based on the time. In other words, this data arrival time measurement storage means 48 is used for communication line traffic between the relay server 40 and each karaoke performance terminal 80, or in a network environment (for example, a LAN device) to which each karaoke performance terminal 80 is connected. This is a means for grasping the data arrival time that changes according to the data processing capability and the like.

  Specifically, an ICPM packet “Echo Request” for echo request is transmitted from the relay server 40 to the IP address of each karaoke performance terminal 80 by so-called pinging processing. Each karaoke terminal 80 that has received the ICPM packet “Echo Request” returns an ICPM packet packet “ICPM Echo Reply Message” for an echo response to the IP address of the relay server 40. The relay server 40 starts the time count when “Echo Request” is transmitted, and ends the time count when “ICPM Echo Reply Message” is received. Thereby, in the relay server 40, the data arrival time between each karaoke performance terminal 80 can be measured.

  The data arrival time obtained by sending and receiving the ICPM packet is the time that the ICPM packet reciprocates between the relay server 40 and each karaoke performance terminal 80. Therefore, the data arrival time used in the present embodiment is ½ of the data arrival time obtained by transmission / reception of the ICPM packet.

  Moreover, the traffic of the communication line between the relay server 40 and each karaoke performance terminal 80 changes every moment. Therefore, it is preferable to check the data arrival time at every predetermined timing. For example, the data arrival time may be confirmed every time the music selection reservation information is transmitted.

<Music selection reservation information relay means>
The music selection reservation information relay means 47 sequentially delays the data arrival time in descending order from the karaoke performance terminal having the longest data arrival time in accordance with the difference time between the longest data arrival time and the other data arrival times. The program includes a program for transmitting the music selection reservation information to each karaoke performance terminal 80 having identification information (performance terminal ID) included in the received music selection reservation information.

  That is, in the relay server 40, the function of the data arrival time measurement storage means 48 stores the arrival delay time between each karaoke performance terminal 80 that has shifted to the synchronous performance mode, and the music selection reservation information is stored in each karaoke performance terminal. When the performance is relayed to 80, the performance start timing is shifted in each karaoke performance terminal 80 in accordance with the data arrival time with each karaoke performance terminal 80, thereby shifting to the synchronous performance mode. In all karaoke performance terminals 80, the performance of karaoke music can be started substantially simultaneously.

  For example, the karaoke performance terminal (1) and the karaoke performance terminal (2) are in the synchronous performance mode, the data arrival time of the karaoke performance terminal (1) is 10 msec (ping response time is 20 msec), It is assumed that the data arrival time of the terminal (2) is 20 msec (ping response time is 40 msec). In this case, the difference time of the data arrival time is 10 msec between the karaoke performance terminal (1) and the karaoke performance terminal (2).

  Therefore, first, a performance start signal is transmitted to the karaoke performance terminal (2) having the longest data arrival time, and after 10 msec from the timing at which the performance start signal is transmitted, to the karaoke performance terminal (1). A performance start signal is transmitted. Thereby, in a karaoke performance terminal (1) and a karaoke performance terminal (2), a karaoke can start the performance of a music substantially simultaneously. Even when there are a plurality of karaoke performance terminals 80, by performing the same processing, it is possible to start the performance of karaoke music at almost the same time on all the karaoke performance terminals 80 that have shifted to the synchronous performance mode.

<Synchronous performance applicant presence information transmission means>
When the synchronized performance applicant presence information transmitting means 49 receives the synchronized performance application information from the applicant's personal portable terminal 60, the synchronized performance applicant presence information transmitting means 49 applies the synchronized performance application to the karaoke performance terminal 80 linked to the recruiter's personal portable terminal 60. It consists of a program for sending information. By the function of the synchronous performance applicant presence information transmission means 49, when there is an applicant for the synchronous performance, the applicant is notified of the existence of the applicant, and the applicant participates in the synchronous performance. Information for determining whether to permit or not can be provided.

<Synchronous performance information transmission permission means>
The synchronized performance information transmission permission means 50 is composed of a program for permitting the synchronized performance information transmitting means 46 to transmit the synchronized performance information when the synchronized performance permission information is received from the recruiter's personal portable terminal 60. That is, the synchronized performance information transmission permission means 50 is a means that functions in cooperation with the synchronized performance applicant presence information transmission means 49, the synchronized performance applicant presence information display means 103, and the synchronized performance permission information transmission means 70, and is described above. As described above, it is a means that functions when the applicant for the synchronous performance determines whether or not to allow the applicant to participate in the synchronous performance.

<Karaoke performance terminal>
As shown in FIG. 1, the karaoke performance terminal 80 includes a karaoke main body 81, a speaker 82, a microphone 83, a display device 84, and a mixing amplifier 85. Note that the karaoke performance terminal 80 according to the embodiment of the present invention uses the personal portable terminal 60 as a remote control device for music selection reservation, but a dedicated karaoke remote control device 86 for users who do not use the personal portable terminal 60. May be provided. In this embodiment, an input / output display unit (not shown) attached to the karaoke remote control device 86 can function as a display device 84 for displaying synchronized performance information.

<Karaoke body>
As shown in FIG. 1, the karaoke main unit 81 includes a network transmission / reception unit 91, a central control unit 92, a ROM 93, a RAM 94, an HDD 95, a local transmission / reception unit 96, a reservation management unit 97, a music playback control unit 98, an A / D converter 99, Video reproduction control means 100, synchronous performance information display means 101, and synchronous performance mode transition means 102 are provided. Moreover, the karaoke main body 81 of the present embodiment further includes a synchronized performance applicant presence information display means 103.

<Central control means>
The central control means 92 is a means for comprehensively controlling the karaoke main body 81 and is constituted by, for example, a CPU and its peripheral devices, and is controlled by the CPU or the like operating according to a program stored in the ROM 93 or the like. The function can be demonstrated.

<ROM / RAM>
The ROM 93 is a device for storing program data and numerical data for controlling each device constituting the karaoke main body 81, and is composed of, for example, a semiconductor memory. The RAM 94 functions as a temporary storage area for temporarily storing programs and various data, and is constituted by, for example, a semiconductor memory. Instead of configuring the RAM 94 with a physical semiconductor memory, the virtual RAM 94 may be configured using a hard disk storage device or the like. In the present embodiment, a reservation queue 94 a is stored in the RAM 94.

<Reservation queue>
The reservation queue 94a is a data table in which song IDs are arranged in order of performance for karaoke songs reserved for music selection. The reservation queue 94a may include data such as a song name and a song selector in addition to the song ID.

<HDD>
The HDD 95 functions as a large-capacity storage device, and stores a music database 95a and a video database 95b. Note that a mass storage device such as a DVD capable of rewriting data may be used instead of the HDD 95 or together with the HDD 95.

<Music database / video database>
The music database 95a is a database configured by associating music performance data (MIDI standard data) and lyrics rendering data in association with music IDs. The performance control data is digital data for controlling the performance of each musical piece, and the lyric rendering data includes display timing data and color change data of lyric characters synchronized with the performance. The video database 95b is a database that stores a predetermined number of background videos corresponding to karaoke songs to be played as video files corresponding to the song IDs of the karaoke songs.

<Transmitting / receiving means>
The local transmission / reception means 96 includes an electronic circuit and a program for transmitting / receiving data between the karaoke main body 81 and the karaoke remote control device 86. In the present embodiment, data is transmitted and received between the karaoke main body 81 and the karaoke remote control device 86 by infrared communication. The network transmission / reception means 91 includes an electronic circuit and a program for transmitting / receiving data between the karaoke main body 81 and the relay server 40.

<Reservation management means>
The reservation management unit 97 includes a program for arranging the music IDs of the music pieces reserved for music selection in the order of performance to generate a reservation queue 94a, and storing and managing the reservation queue 94a in the RAM 94. When the music selection reservation is made by the karaoke remote control device 86, the reservation management means 97 arranges the music IDs of the songs selected by the user using the music selection function of the karaoke remote control device 86 in the order of performance, and the reservation queue. 94a is generated.

<Music playback control means>
The music reproduction control means 98 is an electronic circuit for digitally reproducing the sound source data based on the performance control data extracted from the music database 95a based on the music ID and converting it to analog and outputting it to the mixing amplifier 85. As described above, the mixing amplifier 85 mixes the singing voice signal of the singer inputted from the microphone 83 and the performance voice signal sent from the music reproduction control means 98, and amplifies the amplified voice signal by the amplifier function to the speaker 82. It is a device for outputting more.

<Video playback control means>
The video reproduction control means 100 synchronizes the background video data extracted from the video database 95b and the lyric rendering data (telop data) included in the music database 95a with the performance data of the karaoke music during the performance of the karaoke music. And a program for outputting to the display device 84.

<Synchronous performance information display means>
The synchronized performance information display means 101 is composed of a program for displaying the synchronized performance information received from the relay server 40 at each karaoke performance terminal 80. Synchronous performance information is information that is generated when there is an applicant who wants to participate in the synchronized performance with respect to the synchronized performance recruitment information from the recruiter. The identification information (performance terminal ID) of the karaoke performance terminal 80 linked to the mobile phone 60 or the identification information (performance terminal ID) of the karaoke performance terminal 80 linked to the applicant's personal mobile phone 60 is included. The synchronized performance information can be displayed as a two-dimensional barcode on the display screen of the display device 84.

  As will be described in detail later, the recruiter and applicant for the synchronized performance acquire the synchronized performance information by the function of the synchronized performance information acquisition means 69 of the personal portable terminal 60, thereby including the synchronized performance information in the music selection reservation information. Can be made.

<Synchronized performance mode transition means>
The synchronized performance mode transition means 102 is composed of a program for causing each karaoke performance terminal 80 that has received the synchronized performance information to transition to the synchronized performance mode. That is, when the karaoke performance terminal 80 receives the synchronized performance information, each karaoke performance terminal 80 connected to the network shifts to the synchronized performance mode by the function of the synchronized performance mode transition means 102. Only the music selection reservation from the personal portable terminal 60 linked at 80 is accepted, no music selection reservation is accepted during the performance of the music, and each karaoke performance terminal 80 is in a period when the performance is not performed at each karaoke performance terminal 80. Since the performance of the karaoke music based on the music selection reservation information received from the personal portable terminal 60 associated with is started, the performance of the same karaoke music can be started almost simultaneously.

  Thereby, in each karaoke performance terminal 80 paired with the personal mobile terminal 60 of the synchronous performance recruiter and applicant, the performance reservation information transmitted from any of the personal mobile terminals 60 is transmitted via the relay server 40. By simultaneously transmitting to each karaoke performance terminal 80 connected to the network, the same karaoke musical piece starts to be played simultaneously, so that the user of each karaoke performance terminal 80 can enjoy a duet or the like.

<Synchronous performance applicant presence information display means>
The synchronous performance applicant presence information display means 103 is a means that functions when the recruiter is given the authority to decide whether or not to allow the applicant to participate. That is, the synchronized performance applicant presence information display means 103 transmits the synchronized performance application information from the applicant's personal portable terminal 60 to the relay server 40, and the synchronized performance application information is paired with the recruiter's personal portable terminal 60. When transmitted to the ringed karaoke performance terminal 80, the program includes a program for displaying the synchronous performance application information on the display screen of the display device 84. Thereby, the recruiter can recognize that the applicant has requested to participate.

<Microphone>
The microphone 83 is a device for inputting singing voice. The singing voice signal inputted from the microphone 83 is inputted to the mixing amplifier 85, mixed with the performance voice signal sent from the music reproduction control means 98, amplified and outputted to the speaker 82. The singing voice signal input from the microphone 83 is digitally converted by the A / D converter 99 and transmitted to another karaoke performance terminal 80 via the relay server 40 or the like in the synchronous performance mode. Thereby, in the other karaoke performance terminal 80 which performs a synchronous performance, it can sing simultaneously.

<Display device>
The display device 84 is a device for displaying a background video, lyrics telop, and the like related to karaoke music, and is configured by a liquid crystal display, for example. In the present embodiment, the synchronized performance information is displayed on the display screen of the display device 84.

<Personal mobile terminal>
The personal portable terminal 60 has a music selection reservation function by downloading the music selection application software 111 stored in the mobile WWW relay server 110 using the data communication function and installing the music selection application software 111. Can do. When the music selection application software 111 is installed in the personal portable terminal 60, the personal portable terminal 60 is provided with a program that functions as the music search means 64 and can select music.

  Further, the personal portable terminal 60 includes a music selection reservation information transmission means 61, a memory 62 for storing the music ID 62a and the synchronous performance information 62b of the selected music, and a transmission / reception means for transmitting / receiving data via the mobile phone network 30. 63, music search means 64, synchronous performance recruitment information transmission means 65, browsing request signal transmission means 66, synchronous performance recruitment information reception means 67, synchronous performance application information transmission means 68, and synchronous performance information acquisition means 69. Further, the personal portable terminal 60 of the present embodiment can include a synchronized performance permission information transmitting unit 70.

  The mobile WWW relay server 110 connected to the personal mobile terminal 60 via the mobile phone network 30 stores the music selection application software 111 and the music index database 112. The music search means 64 of the personal mobile terminal 60 includes With the function, music can be searched with reference to the music index database 112. Instead of storing the music index database 112 in the mobile WWW relay server 110, the music index database 112 may be downloaded to the personal portable terminal 60 and searched for music locally.

<Music search means / music index database>
The music search means 64 includes a program for searching for music by referring to the music index database 112 based on a user instruction. The song index database 112 is a database describing attribute information of karaoke songs to be played on the karaoke performance terminal 80. For example, the song ID, song name, singer name, lyrics of the singing part, popular season, music This includes various attribute information such as genre classification and whether or not it is a duet song.

<Music selection reservation information transmission means>
The music selection reservation information transmission means 61 sends the synchronized performance information 62b stored in a predetermined storage area (memory 62) from the personal portable terminal 60 of either the recruiter or applicant of the synchronized performance to the relay server 40. And a program for transmitting music selection reservation information including the music ID 63a of the music selection music. The music selection reservation information transmitted from the music selection reservation information transmitting means 61 is transmitted to the relay server 40 via the communication network (cellular phone network 30) of the personal portable terminal 60 and the Internet 20.

<Synchronous performance recruitment information transmission means>
The synchronous performance recruitment information transmitting means 65 is solicited from the recruiter's personal portable terminal 60 to the relay server 40 that the synchronous performance recruiter is recruited, and the identification information of the karaoke performance terminal 80 linked to the personal portable terminal 60. It consists of a program for transmitting synchronous performance recruitment information including (performance terminal ID). That is, a user who desires a synchronized performance can recruit applicants for the synchronized performance by transmitting synchronized performance recruitment information. The music selection reservation information transmitted from the music selection reservation information transmitting means 61 is transmitted to the relay server via the communication network (mobile phone network 30) of the personal portable terminal 60 and the Internet 20.

  This synchronized performance recruitment information transmitting means 65 can be configured to be a functional means of the personal portable terminal 60 by installing the music selection application software 111 in the personal portable terminal 60. Similarly, other functional means for performing a synchronized performance (browsing request signal transmitting means 66, synchronized performance recruitment information receiving means 67, synchronized performance application information transmitting means 68, synchronized performance information acquiring means 69, synchronized performance permission information transmitting means. 70) can also be realized by installing the music selection application software 111.

  In order to perform the synchronized performance by preparing the application software having the synchronized performance function separately and installing the application software in the personal portable terminal 60, instead of including the synchronized performance function in the music selection application software 111. The functional means may be realized.

<Browsing request signal transmission means>
The browsing request signal transmission means 66 includes a program for transmitting a browsing request signal for synchronous performance recruitment information from the applicant's personal portable terminal 60 to the relay server 40. That is, a user who wants to participate in a synchronized performance can acquire information on the synchronized performance being recruited by browsing the synchronized performance recruitment information.

<Synchronous performance recruitment information receiving means>
The program includes a program for receiving the synchronized performance recruitment information registered in the relay server 40 in the synchronized performance recruitment information receiving means 67 and the personal portable terminal 60 of the applicant. That is, a user who wants to participate in a synchronized performance can participate in the synchronized performance by receiving desired synchronized performance recruitment information from the browsed synchronized performance recruitment information.

<Synchronous performance application information transmission means>
The synchronized performance application information transmitting means 68 sends an application for the synchronized performance to the relay server 40 from the personal portable terminal 60 of the applicant who wishes to participate in the synchronized performance based on the synchronized performance recruitment information, and to the personal portable terminal 60. It consists of a program for transmitting synchronized performance application information including identification information (performance terminal ID) of the linked karaoke performance terminal 80. In the relay server 40, based on the synchronized performance application information received from the recruiter's personal portable terminal 60 and the synchronized performance application information received from the applicant's personal portable terminal 60, information (synchronized performance information) for performing a synchronized performance is received. ) Can be generated.

<Synchronous performance information acquisition means>
The synchronous performance information acquisition means 69 acquires the synchronous performance information 62b displayed on the display device 84 or the like by the function of the synchronous performance information display means 101 of the karaoke performance terminal 80, and stores it in a predetermined storage area (memory 62). For the program. Synchronous performance recruiters and applicants can use the synchronized performance information 62b to cause each karaoke performance terminal 80 to perform synchronously.

  Specifically, in a karaoke performance terminal 80 paired with each personal portable terminal 60 of users (recruiters and applicants) who are applicants for synchronized performance, a two-dimensional barcode is displayed on the display screen of the display device 84. The synchronized performance information 62 b is displayed, and the synchronized performance information acquisition means 69 acquires the synchronized performance information 62 b using a bar code reader (not shown) attached to the personal portable terminal 60 and stores it in the memory 62. To do. When the synchronized performance information 62b includes a predetermined number of digits, the user who views the display screen of the display device 84 inputs the number using a numeric keypad attached to the personal portable terminal 60 or the like. Thus, the synchronized performance information 62b may be acquired.

<Synchronous performance permission information transmission means>
The synchronized performance permission information transmitting means 70 is a means that functions when the recruiter is given the authority to determine whether or not to permit the participation request from the applicant. In other words, the synchronized performance permission information transmitting means 70 is a recruiter when the function of the synchronized performance applicant presence information transmitting means 49 of the relay server 40 notifies the recruiter that an applicant exists. However, it is composed of a program for transmitting synchronous performance permission information to the relay server 40 when instructing permission to participate in synchronous performance based on the synchronous performance application information from the applicant.

<Synchronized performance of karaoke music>
Next, with reference to FIG.1 and FIG.2, the synchronous performance of the karaoke music in the karaoke synchronous performance system 10 of this embodiment is demonstrated.

  In order to perform the synchronized performance of the karaoke music, as shown in FIG. 2, the user (recruiter) who desires the synchronized performance is synchronized by the function of the synchronized performance recruitment information transmitting means 65 of the personal portable terminal 60 owned by the user. The performance solicitation information is transmitted to the relay server 40 (S11). The synchronous performance solicitation information includes information indicating that it is desired to shift to the synchronous performance mode and identification information (performance terminal ID) of the karaoke performance terminal 80 linked to the personal portable terminal 60.

  In the relay server 40 that has received the synchronous performance recruitment information, the synchronous performance recruitment information is registered and managed by the function of the synchronous performance recruitment information registration means 43 (S12). Another user (applicant) who wishes to participate in the synchronized performance transmits a browsing request signal to the relay server 40 by the function of the browsing request signal transmitting means 66 of the personal portable terminal 60 owned by the user (applicant) ( S13). The relay server 40 that has received the browse request signal from the applicant's personal portable terminal 60 (S14) transmits the synchronized performance recruitment information that is registered and managed to the applicant's personal portable terminal 60 (S15). When the applicant's personal portable terminal 60 receives the synchronized performance recruitment information (S16), the applicant can recognize the recruitment status of the synchronized performance.

  And when an applicant desires to participate in a synchronous performance, the function of the synchronous performance application information transmission means 68 of the said personal portable terminal 60 of the said applicant makes the synchronous performance which desires participation with respect to the relay server 40. The recruitment information is specified, and synchronous performance application information including identification information (performance terminal ID) of the karaoke performance terminal 80 linked to the personal portable terminal 60 is transmitted (S17). The performance application information is received (S18).

  Here, when the recruiter determines whether or not to accept the participation request from the applicant, the function of the synchronous performance applicant presence information transmitting means 49 of the relay server 40 allows the recruiter's personal mobile phone. Synchronized performance applicant presence information is transmitted to the karaoke performance terminal 80 linked to the terminal 60 (S50). The karaoke performance terminal 80 that has received the synchronized performance applicant presence information displays the synchronized performance applicant presence information on the display screen of the display device 84 (S51), and notifies that there is an applicant for the synchronized performance.

  When the recruiter accepts the participation request from the applicant, the function of the synchronized performance permission information transmitting means 70 of the recruiter's personal portable terminal 60 transmits the synchronized performance permission information to the relay server 40. (S52). The relay server 40 that has received the synchronized performance permission information (S53) permits the transmission of the synchronized performance information by the function of the synchronized performance information transmission permission means 50. When the transmission of the synchronized performance information is permitted, the function of the synchronized performance information transmitting means 46 allows the recruiter and applicant's personal portable terminals 60 and the karaoke performance terminals 80 linked to the personal portable terminals 60 to be used. Then, the synchronized performance information for performing the synchronized performance is transmitted (S19). If the recruiter is not allowed to determine whether or not to accept the participation request from the applicant, the above-described processes (S50 to S53) are omitted, and the personal mobile terminal 60 of the recruiter and the applicant is used. Synchronized performance information for performing synchronized performance is transmitted to the karaoke performance terminal 80 paired with (S19).

  In the karaoke performance terminal 80 associated with the personal mobile terminal 60 of the recruiter and applicant who received the synchronized performance information from the relay server 40, the synchronized performance information is displayed on the display screen of the display device 84 (S20-1, S20). -2), each karaoke performance terminal 80 is shifted to the synchronous performance mode (S21-1, S21-2). Further, the recruiter and the applicant acquire the displayed synchronized performance information 62b by the function of the synchronized performance information acquisition means 69 of the personal portable terminal 60 (S22-1 and S22-2) and store them in the memory 62. To do. Thereby, in each karaoke performance terminal 80 which changed to the synchronous performance mode, the music selection reservation information from a recruiter or an applicant can be received and a synchronous performance can be started.

  That is, the music selection reservation information is transmitted to the relay server 40 from any of the personal portable terminals 60 linked to each karaoke performance terminal 80 that has shifted to the synchronous performance mode by the function of the music selection reservation information transmission means 61. Then (S23), the relay server 40 receives the music selection reservation information (S24).

  Further, the relay server 40 transmits a data arrival time confirmation signal to each karaoke performance terminal 80 by the function of the data arrival time measurement storage means 48 (S25). Each karaoke performance terminal 80 that has received the data arrival time confirmation signal (S26-1, S26-2) transmits a data arrival time response signal to the relay server 40 (S27-1, S27-2). The relay server 40 receives the data arrival time response signal (S28), and measures and stores the data arrival time of each karaoke performance terminal (S29).

  Then, by the function of the music selection reservation information relay means 47, the karaoke performance terminal having the longest data arrival time is sequentially arranged in descending order according to the difference time between the longest data arrival time and the other data arrival times among the data arrival times. The transmission timing is delayed, and the music selection reservation information is transmitted to each karaoke performance terminal having the identification information included in the received music selection reservation information (S30).

  In each karaoke performance terminal 80 that has shifted to the synchronous performance mode, when the music selection reservation information is received by the function of the music selection reservation information receiving means 106 (S31-1, S31-2), the performance of the karaoke music based on the music selection reservation information is started. (S32-1, S32-2).

  In the above-described embodiment, in order to facilitate the explanation, there are one applicant for the synchronous performance and one applicant for each, but there may be a plurality of applicants and applicants for the synchronous performance. In addition, by the functions of each means described above, a plurality of applicants can apply for an arbitrary applicant's desire for synchronized performance.

<Other embodiments>
The devices and means constituting the karaoke synchronized performance system 10 of the present invention and its peripheral devices are not limited to those described above. Depending on the purpose of use, only the necessary devices and means may be configured, or other devices or Means can be added. Further, each unit may be configured as a unit in which a plurality of functions are integrated, instead of being configured separately.

10 Karaoke synchronized performance system 20 Communication network (Internet)
DESCRIPTION OF SYMBOLS 30 Mobile telephone network 40 Relay server 41 Server control means 42 Transmission / reception means 43 Synchronous performance recruitment information registration means 44 Browse request signal reception means 45 Synchronous performance recruitment information transfer means 46 Synchronous performance information transmission means 47 Music selection reservation information relay means 48 Data arrival time Measurement storage means 49 Synchronous performance applicant presence information transmission means 50 Synchronous performance information transmission permission means 60 Personal portable terminal 61 Music selection reservation information transmission means 62 Memory 62a Music ID
62b Synchronized performance information 63 Transmission / reception means 64 Music search means 65 Synchronous performance recruitment information transmission means 66 Browse request signal transmission means 67 Synchronous performance recruitment information reception means 68 Synchronous performance application information transmission means 69 Synchronous performance information acquisition means 70 Synchronous performance information acquisition means 70 Means 80 Karaoke performance terminal 81 Karaoke main body 82 Speaker 83 Microphone 84 Display device 85 Mixing amplifier 86 Karaoke remote control device 91 Network transmission / reception means 92 Central control means 93 ROM
94 RAM
94a Reservation queue 95 HDD
95a Music database 95b Video database 96 Local transmission / reception means 97 Reservation management means 98 Music reproduction control means 99 A / D converter 100 Video reproduction control means 101 Synchronous performance information display means 102 Synchronous performance mode transition means 103 Synchronous performance applicant presence information display means 110 Mobile WWW Relay Server 111 Application Software for Music Selection 112 Music Index Database

Claims (3)

At least two karaoke devices connected to the network having a function of reserving music selection of karaoke music at each karaoke performance terminal by relaying music selection reservation information input from a personal portable terminal possessed by the user with a relay server A karaoke synchronized performance system having a synchronized performance mode capable of synchronizing the performance terminals and simultaneously playing the same karaoke music,
Synchronous performance recruitment information transmission means, synchronous performance recruitment information registration means, browsing request signal transmission means, browsing request signal reception means, synchronous performance recruitment information transfer means, synchronous performance recruitment information reception means, and synchronous performance application information Transmission means, synchronized performance information transmission means, synchronized performance information display means, synchronized performance mode transition means, synchronized performance information acquisition means, music selection reservation information transmission means, data arrival time measurement storage means, music selection reservation information A relay means,
The synchronous performance recruitment information transmission means, the browsing request signal transmission means, the synchronous performance recruitment information reception means, the synchronous performance application information transmission means, the synchronous performance information acquisition means, and the music selection reservation information transmission means are: , Realized as a function of the personal portable terminal,
The synchronous performance recruitment information registration means, the browsing request signal reception means, the synchronous performance recruitment information transfer means, the synchronous performance information transmission means, the data arrival time measurement storage means, and the music selection reservation information relay means , Realized as a function of the relay server,
The synchronized performance information display means and the synchronized performance mode transition means are realized as functions of the karaoke performance terminal,
The synchronous performance solicitation information transmitting means is a synchronization including the fact that the recruiter's personal portable terminal recruits synchronous performance applicants to the relay server and the identification information of the karaoke performance terminal linked to the personal portable terminal. Send performance recruitment information,
The synchronous performance recruitment information registration means receives the synchronous performance recruitment information, registers it in a predetermined storage area,
The browsing request signal transmission means transmits a browsing request signal for the synchronous performance recruitment information from the applicant's personal portable terminal to the relay server,
When the synchronous performance solicitation information transfer means receives the browsing request signal for the synchronous performance solicitation information, it transmits the registered synchronization to the personal portable terminal of the applicant who has transmitted the browsing request signal for the synchronous performance solicitation information. Transfer performance recruitment information,
The synchronous performance recruitment information receiving means receives the synchronous performance recruitment information from the relay server,
The synchronized performance application information transmitting means is configured to apply to the relay server from the applicant's personal portable terminal who wishes to participate in the synchronized performance based on the synchronized performance recruitment information, and to the personal portable terminal. Send synchronized performance application information including identification information of linked karaoke performance terminals,
When the synchronized performance information transmitting means receives the synchronized performance application information, the synchronized performance information transmitting means performs the synchronized performance on the karaoke performance terminal linked to the recruiter's personal portable terminal and the applicant's personal Transmitting synchronous performance information including identification information of the karaoke performance terminal associated with the mobile terminal, and performing the synchronous performance on the karaoke performance terminal associated with the applicant's personal mobile terminal and Send synchronized performance information including identification information of the karaoke performance terminal linked to the personal mobile terminal of the recruiter,
When the synchronized performance information display means receives the synchronized performance information, each synchronized karaoke performance terminal displays the synchronized performance information,
The synchronized performance mode transition means causes each karaoke performance terminal that has received the synchronized performance information to transition to the synchronized performance mode,
The synchronized performance information acquisition means acquires the displayed synchronized performance information and stores it in a predetermined storage area,
The music selection reservation information transmitting means transmits the synchronized performance information stored in the predetermined storage area from the personal mobile terminal of either the recruiter or the applicant to the relay server, and the personal mobile terminal. Sending the song selection reservation information including the identification information of the linked karaoke performance terminal and the song ID of the song selection song,
The data arrival time measurement storage means transmits a data arrival time confirmation signal to each karaoke performance terminal and returns a response signal to the data arrival time confirmation signal from each karaoke performance terminal. Measure the time, memorize the data arrival time in each karaoke performance terminal based on the measurement time,
The music selection reservation information relay means sequentially delays the data arrival time in descending order from the karaoke performance terminal having the longest data arrival time according to the difference time between the longest data arrival time and the other data arrival time among the data arrival times. Transmitting the music selection reservation information to each karaoke performance terminal having identification information included in the music selection reservation information,
Karaoke synchronized performance system characterized by that. Synchronous performance applicant presence information transmission means, synchronous performance applicant presence information display means, synchronous performance permission information transmission means, and synchronous performance information transmission permission means,
The synchronized performance applicant presence information transmission means and the synchronized performance information transmission permission means are realized as a function of the relay server, and the synchronized performance permission information transmission means is realized as a function of the personal portable terminal, and the synchronization The performance applicant presence information display means is realized as a function of the karaoke performance terminal,
When the synchronized performance applicant presence information transmitting means receives the synchronized performance application information from the applicant's personal portable terminal, the synchronized performance applicant is sent to the karaoke performance terminal linked to the recruiter's personal portable terminal. Send presence information,
The synchronous performance applicant presence information display means displays the synchronous performance applicant presence information in a karaoke performance terminal linked to the recruiter's personal mobile terminal,
The synchronous performance permission information transmitting means transmits the synchronous performance permission information when the recruiter instructs the permission to participate in the synchronous performance based on the synchronous performance applicant presence information,
The synchronous performance information transmission permission means permits transmission of the synchronous performance information in the synchronous performance information transmission means when the synchronous performance permission information is received.
The karaoke synchronized performance system according to claim 1.   3. The karaoke synchronized performance system according to claim 1, wherein the data arrival time measurement storage unit measures and stores a data arrival time at the karaoke performance terminal at each predetermined timing.

Images