JP2005078014A - Computer system, online karaoke system, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To recover the information, when damaged. <P>SOLUTION: The karaoke machine A obtains data 1 from the host A (S1) and data 2 from the outer media DVD (S2). The file management record inside the karaoke A becomes as shown by (b). Then, the karaoke machine B acquires data 1 (S3) and data 2 (S4) from the karaoke A, and the file management records inside the karaoke B becomes as shown by (c). Although the acquisition history 2 becomes the copied content of the acquisition history 1 from the karaoke A, the attribute of the DVD used to obtain the data becomes Ver1.27, when the acquisition history 2 of the data 2 is the copied acquisition history 1 of the record obtained from the karaoke B, the acquisition attribute 2 of the data 2 is deleted (S5), because the karaoke B has no interface for the outer media. Each karaoke machine checks the CRC of the data and recovers them, according to the acquisition history in the file management record, if damages are detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a computer system capable of restoring damaged data in a computer system that acquires and stores data.

  Conventionally, in a computer system, data acquired via a communication line or the like is stored (stored) in a storage device, and various processes are performed using the data stored in the storage device to realize a predetermined function. Systems that do this are known. For example, an example of such a computer system is a communication karaoke system. The communication karaoke system is configured such that a host computer and a plurality of karaoke apparatuses can communicate with each other via a telephone line, etc., and the karaoke apparatus acquires music information such as musical sound data from the host computer by communication, and from the user. When the request is accepted, the karaoke device plays and plays the musical sound data. In addition, in order to reduce communication costs and improve response to requests, each communication karaoke device is provided with a storage device such as an HDD, and once obtained music information is stored in a storage device such as an HDD for performance. Also known is a communication karaoke system that reads out and reproduces musical tone data corresponding to a request from an HDD or the like. For example, if there are multiple karaoke rooms in a karaoke store, each karaoke device installed in each karaoke room is connected to a telephone line, and each karaoke device individually communicates with a host computer to record song information. There is a communication karaoke system to acquire. In this communication karaoke system, since data is received for each karaoke device, there is a problem that a telephone fee is charged for the number of karaoke devices. Therefore, in order to solve these problems, in recent years, a telephone line is connected to at least one karaoke device among a plurality of karaoke devices installed in a certain store, and the karaoke device is connected to a host computer in the same manner as described above. There is a communication karaoke system configured to receive song information from the karaoke device via a line connected to the karaoke device via a LAN or the like, although other karaoke devices receive the song information. For example, when the size of song information exceeds the amount that can be acquired by communication, the karaoke device is provided with (or connected to) a reading device for external media (eg, DVD, CD-ROM, etc.). There is also a method of reading data recorded on an external medium and transferring it to a storage device provided in the karaoke apparatus.

Separately from this, there is known a karaoke apparatus that records a history of errors and transmits the recorded contents or displays them on a display in accordance with an instruction (see, for example, Patent Document 1). .
JP-A-8-44379

  By the way, the data stored in the storage device provided in the computer system may be destroyed. For example, storage devices such as HDDs are vulnerable to vibrations and power interruptions, and may cause damage to stored data. For example, when the computer system is a communication karaoke system, musical tone data in a storage device such as an HDD used by each karaoke control device that has received musical piece information such as musical tone data to store the musical piece information is stored. When the music is damaged, when a music corresponding to the damaged music data is requested by the user, an abnormal sound is output at the time of performance. In this case, the system provider generally replaces the HDD with a normal HDD as soon as possible.

  However, in such a configuration, there is a problem that data once damaged cannot be used until the system provider replaces a storage device such as an HDD. For example, in the above-described karaoke apparatus, when the musical sound data is damaged, there is a problem that the music corresponding to the musical sound data is not normally played and the karaoke user feels dissatisfied. Further, there is a problem that even if the data is damaged, the damaged data cannot be known unless the data is actually used due to performance or the like.

  In view of the above problems, an object of the present invention is to construct a computer system that can restore damaged data in a computer system that acquires and stores data.

  According to the computer system according to claim 1 made to solve the above-described problem, the data is acquired, the acquired data is stored, and it is determined whether or not the stored data is damaged. Further, the acquisition source specifying information, which is information for specifying the acquisition source of the acquired data, is stored in association with the acquired data, and when it is determined that the stored data is damaged, The acquisition source is specified based on the acquisition source specifying information stored correspondingly, and the data is acquired again from the specified acquisition source and stored again. Therefore, damaged data can be restored.

  Note that data acquisition may be performed via a network or from a recording medium, for example, as shown in claim 2. For example, it may be configured to acquire from another computer connected to the network, or may be configured to include a recording medium reading unit and read from the reading unit.

  Whether or not the stored data is damaged is determined by storing error detection information calculated based on the contents of the data and storing the stored error detection information. It may be determined whether or not the data is damaged based on the information and the stored data. For example, as the error detection information, a CRC value of data can be used. For example, the presence or absence of an error can be detected by comparing the CRC value stored as error detection information with the CRC value calculated based on the stored data.

  The error detection information may be included in the data to be acquired in advance as shown in claim 4, for example, or may be generated based on the acquired data as shown in claim 5. Good.

  Further, as shown in claim 6, the stored data may be distributed to other computer systems. As data to be distributed, for example, as shown in claim 7, stored data and acquisition source specifying information of the data may be used.

  And as for acquisition of data, as shown in claim 8, data and acquisition source specific information of other computers corresponding to the data are acquired from other computer systems via the network, and the acquired other computers New acquisition source identification information obtained by adding the other computer as acquisition source information to the acquisition source identification information may be generated and stored. In this way, the acquisition source history is generated as new acquisition source identification information. Therefore, damaged data can be reacquired based on this history.

  In addition, when the acquisition source specific information includes an acquisition destination that cannot be acquired from its own computer system, it may be configured not to acquire from the acquisition source. For example, it may be determined whether or not acquisition is possible from its own computer system, and if acquisition is impossible, acquisition from the acquisition destination may not be performed. For example, as shown in claim 9, when acquisition source identification information that cannot be acquired from its own computer system is included in the acquisition source identification information of another computer, the acquisition source that cannot be acquired. After the specific information is deleted, the new acquisition source specific information may be generated.

By the way, it is possible to construct a computer system in which a plurality of computer systems according to claims 1 to 9 are combined.
For example, as shown in claim 10, a first computer system that is the computer system according to claim 7 and a second computer system that is the computer system according to any one of claims 1 to 9 are provided. It is good to comprise as a computer system, and the acquisition means in a 2nd computer system is good to have the function to acquire the said data distributed by the distribution means in said 1st computer system at least. In this way, in the second computer, when the data acquired and stored from the first computer is damaged, the data can be acquired again from the first computer and stored again. .

  In addition, as shown in Claim 11, when each means in the computer system in any one of Claims 1-10 is implement | achieved by a computer, it can be provided as a program executed with a computer, for example. In the case of such a program, for example, the program is recorded on a computer-readable recording medium such as a flexible disk, a magneto-optical disk, a CD-ROM, a hard disk, a ROM, and a RAM, and loaded into a computer for execution as necessary. Each means can be realized by loading and executing via a network.

  Moreover, such a computer system can be mounted on various devices. For example, as shown in claim 12, the karaoke system can be provided. According to such a karaoke system, for example, when data stored in a storage device such as an HDD used for storing song information is damaged, the data is automatically re-acquired to restore the data. Is done. Therefore, it is not necessary for the system provider to replace the HDD or the like.

  Embodiments to which the present invention is applied will be described below with reference to the drawings. Needless to say, the embodiments of the present invention are not limited to the following examples, and can take various forms as long as they belong to the technical scope of the present invention.

  1 shows a configuration of a karaoke system including a host computer 2, a communication network 3, karaoke apparatuses 1a, 1b, and 1c (hereinafter, collectively referred to as karaoke apparatus 1) as a computer system of the present embodiment, and a LAN 30. FIG.

  The host computer 2 stores various files (for example, song information (lyric information, music information, image information, etc.)) and has a function of transmitting via a communication network 3 such as a public telephone line or ISDN. . For example, these files are transmitted to the karaoke apparatus 1a and the karaoke apparatus 1b.

  Since the karaoke apparatuses 1a, 1b, and 1c have the same basic configuration, only the karaoke apparatus 1a is illustrated as an internal configuration. However, the karaoke device 1a and the karaoke device 1b include a communication device 19 connected to the CPU 14, and the communication device 19 is connected to the host computer 2 via the communication network 3, whereas the karaoke device 1c is a communication device. The device 19 is not provided and is not connected to the communication network 3. The karaoke apparatus 1 a includes an external media interface 28 connected to the CPU 14, whereas the karaoke apparatus 1 b and the karaoke apparatus 1 c do not include the external media interface 28. Other configurations are the same in the karaoke apparatuses 1a, 1b, and 1c.

  That is, an input device 10 such as an operation panel for reserving music, a CPU 14 for controlling the entire karaoke device 1, a RAM 15 for temporarily storing various information, and a sound source reproducing device 18 for reproducing a performance based on music information. , An amplifier 20 that amplifies an electrical signal applied to music information and a user's singing sound, a speaker 22 that inputs an electrical signal from the amplifier 20 and plays an accompaniment and a user's singing sound, a user's singing sound, and the like Is input to the amplifier 20 (hereinafter simply referred to as a microphone) 23, EEPROM 12, hard disk 13 storing karaoke music information, image information and other various information, and image information is reproduced (reproduced). Video playback device 24 for display, a display device 26 for displaying the reproduced background image and lyrics, and a network for connection to the LAN 30 And an interface 17. Among these, the input device 10, the EEPROM 12, the hard disk 13, the RAM 15, the network interface 17, the sound source playback device 18 and the video playback device 24 are connected to the CPU 14. The program stored in the hard disk 13 is configured to be loaded from the hard disk 13 to the RAM 15 and executed by the CPU 14.

  The communication device 19 is a modulation / demodulation device that modulates and demodulates signals. The communication device 19 is configured to be accessible to the host computer 2 through the communication network 3 under the control of the CPU 14, and is sent from the host computer 2 through the communication network 3. It can receive incoming files and transmit data to the host computer 2.

  The input device 10 is operated by the user, and can be used to select an arbitrary song, adjust the key of the performance sound, adjust the volume balance between the performance and the song, and perform various adjustments such as echo, volume, and tone. An operation unit for performing the operation and a display unit (not shown) for displaying the selected song number and the like are provided. The user can reserve and register the music to be reproduced in the karaoke apparatus 1a by operating the operation unit.

The EEPROM 12 stores a boot program, a system program, setting data necessary for various settings, and the like.
The hard disk 13 stores music information, a performance program for causing the CPU 14 to execute karaoke performance, log data such as performance records, and the like as files. When a song is selected via the operation unit of the input device 10, the CPU 14 calls a lyric information file, an image information file, and a music information file corresponding to the selected song from the hard disk 13, and Performance processing is performed by outputting the video playback device 24 and the sound source playback device 18 in synchronization with each other. The hard disk 13 stores each piece of music information (lyric information, music information, image information, etc.) corresponding to the music number, and the file to be called is specified and called by the music number.

  The performance data output from the CPU 14 is converted into an analog performance sound signal in the sound generator 18 and then sent to the amplifier 20 to be electrically amplified. The amplifier 20 mixes the singing sound signal of the user (singer) input via the microphone 23 with an appropriate ratio. The mixed singing sound signal and the performance sound signal are sent from the amplifier 20 to the speaker 22. And output as sound and performance sound from the speaker 22 to the outside.

  On the other hand, the video reproduction device 24 reproduces an image based on the image information file read from the hard disk 13 under the control of the CPU 14. Thereby, the lyrics data output by the CPU 14 is synthesized with the video data to be the background video in the video playback device 24, and the lyrics telop is displayed together with the background video on the screen of the display device 26.

Due to such a configuration, the user can sing using the microphone 23 in accordance with the karaoke performance flowing from the speaker 22 while referring to the lyrics telop displayed on the display device 26.
The karaoke devices 1 a and 1 b have a function of the CPU 14 controlling the communication device 19 to acquire music information and the like from the host computer 2 via the communication network 3 and store them in the hard disk 13. In the karaoke apparatus 1a, the CPU 14 controls the external media interface 28, and the music information and the like from the external media 6 (for example, DVD, CD-ROM, FD, etc.) via the playback device (not shown) of the external media 6. Is acquired and stored in the hard disk 13. In this case, for example, if the external medium 6 that records the song information of the additional song is distributed, it can be easily obtained even if the size of the song information per song exceeds the amount that can be obtained by communication. Also, an external medium 6 containing so-called local songs and indie songs can be purchased as an option and stored in the hard disk 13. Furthermore, the karaoke apparatus 1 has a function of acquiring music information and the like from other karaoke apparatuses 1 via the LAN 30 and storing them in the hard disk 13. In this case, since it is acquired via the LAN 30, there is no communication cost, less time is required compared with the case of acquiring from the external medium 6, and the data transfer speed of the LAN 30 is faster, so that per song Even if the size of the song information is large, the acquisition is completed in a short time. When acquiring the song information, a CRC value, which is error detection information for the song information, is received from the acquisition destination of the song information and stored in the hard disk 13 in association with each piece of song information. Further, information on the attribute of the acquisition destination (host name, karaoke identification, etc.) is also stored in the hard disk 13 in association with the song information. Information for restoring the song information such as the CRC value, the acquisition destination and the acquisition destination attribute associated with the song information is collected and stored in the hard disk 13 as a file management table.

  Further, the CPU 14 performs a process for checking whether there is any damaged data in the hard disk 13, and when the damaged data is detected in this process, the acquisition destination and the acquisition destination attribute described in the file management table. The acquisition destination is determined according to the history, and the song information is restored by re-acquisition from the determined acquisition destination. That is, a re-distribution request for the corresponding music information is transmitted to the host computer 2 via the communication network 3, a re-distribution request for the corresponding music information is transmitted to the other karaoke apparatus via the LAN 30, or the external In the case of media, by requesting insertion of the media indicated by the attribute, the corresponding song information is reacquired, and the restoration of the song information is completed.

2A, 2B, and 2C are explanatory diagrams showing examples of file management tables of the karaoke apparatuses 1a, 1b, and 1c, respectively.
The file management table 50 is a collection of file management records. The file management table is composed of records corresponding to the number of data (files). Each record has a file name 51 of data, availability 58 indicating availability of data, CRC value 52 for judging validity of data, It consists of an acquisition history composed of a list of acquisition destinations 53 and attributes 54. The latest acquisition history is the acquisition history 1 and the acquisition history 3 is the oldest. That is, the acquisition history 1 is information on an acquisition destination when the device acquires data. The CRC value 52 is acquired and stored from the host computer 2 that is the acquisition destination, another karaoke apparatus 1, or the external medium 6. Note that the CPU 14 calculates and stores a CRC for a file created inside the karaoke apparatus 1. As acquisition sources, there are HOST, LAN, DVD, CD-ROM, FD, and LOCAL as shown in FIG. HOST indicates that it has been acquired from the host computer 2, LAN indicates that it has been acquired via the LAN 30, DVD indicates that it has been acquired from the DVD as the external medium 6 via the external media interface 28, and CD-ROM Indicates that it has been acquired from the CD-ROM as the external medium 6 via the external media interface 28, FD indicates that it has been acquired from the FD as the external medium 6 via the external media interface 28, and LOCAL is the internal The data created in.

  As shown in FIG. 2D, the attribute of the file management table is the name of the host computer 2 when the acquisition destination is HOST, the identifier of the karaoke device when the acquisition destination is LAN, the acquisition destination is DVD, In the case of CD-ROM and FD, it is a media identifier (here, a version number), and in the case of internally created data, it is the type of restoration method. In the example of FIG. 2, karaoke device 1a is karaoke A, karaoke device 1b is karaoke B, and karaoke device 1c is karaoke C as karaoke device identifiers.

FIG. 3 is a flowchart showing the flow of processing when music information is acquired from the acquisition destination and stored in the hard disk 13.
In S21 of FIG. 3 (step 21, the same applies hereinafter), the actual music information data is written to the hard disk 13. In subsequent S22, it is determined whether or not the file written in S21 is an internally created file. In the case of an internally created file (S22: Yes), the process proceeds to S23, the CRC value is calculated (S23), the internally created (LOCAL) is set as the acquisition destination information, and the restoration method (recreation type) is set as an attribute. Is set (S24), a record is added to the file management table, and this process ends. On the other hand, if the file is not an internally created file (S22: No), a file management record is acquired from the acquisition destination (S22). In other words, the file management record of the file is requested to the acquisition destination apparatus, and the acquisition destination apparatus transmits the file management record of the file stored in the apparatus to the request source, and is received and acquired by the request source apparatus. To do. In subsequent S27, the unnecessary history is deleted while shifting the acquisition history by one. That is, the acquisition history 2 is transferred to the acquisition history 3 and the acquisition history 1 is transferred to the acquisition history 2, respectively. If there is an acquisition destination that cannot be acquired by the acquisition history acquisition destination, it is deleted. If the acquisition destination of the acquisition history is internally created (LOCAL), it is deleted. In subsequent S28, the acquisition destination and attribute of this time are set in the acquisition history 1. In subsequent S29, a record is added to the file management record. As a result, the “acquisition destination” and “attribute” of the acquisition destination from which the song information has been acquired this time are inserted into the acquisition history 1, and the acquisition destination from which the acquisition destination has acquired the song information is acquired in the acquisition history 2. And the attribute will be entered. In this way, the acquisition source and attribute are stored as a history.

FIG. 4 is a diagram for explaining the music information check and restoration processing.
This process is executed periodically. In S70 of FIG. 4, it is determined whether or not all data (files such as music information) has been checked. If all the data has been checked (S70: Yes), this process ends. On the other hand, if there is data that has not been checked yet (S70: No), the process proceeds to S71. In S71, the CRC value of the actual data is calculated. In subsequent S72, a record corresponding to the data is obtained from the file management table. For example, the music selection number or file name is acquired as a key. In subsequent S73, it is determined whether or not the CRC value calculated in S71 is the same as the CRC value of the record acquired in S72. If both CRC values are the same (S73: Yes), the data to be checked is set to the next data, and the process returns to S70. On the other hand, when both CRC values are different (S73: No), the process proceeds to S74. In S74, data (a file such as song information) is reacquired according to the acquisition information of acquisition history 1 (acquisition information is an acquisition destination and an attribute; the same applies hereinafter) (see FIG. 2). In continuing S75, it is determined whether the reacquisition in S74 was successful. If the re-acquisition is successful (S75: Yes), the process proceeds to S81, the acquisition history is changed, the data to be checked is set as the next data, and the process returns to S70. On the other hand, when the reacquisition fails (S75: No), the process proceeds to S76. In S76, data (a file such as song information) is reacquired according to the information of acquisition history 2 (see FIG. 2). In continuing S77, it is determined whether the reacquisition in S76 was successful. If the re-acquisition is successful (S77: Yes), the process proceeds to S81, the acquisition history is changed, the data to be checked is set as the next data, and the process returns to S70. On the other hand, when the reacquisition fails (S77: No), the process proceeds to S78. In S78, data (a file such as song information) is reacquired according to the information of the acquisition history 3 (see FIG. 2). In subsequent S79, it is determined whether or not the reacquisition in S78 is successful. If the reacquisition is successful (S79: Yes), the process proceeds to S81, the acquisition history is changed, the check target data is set to the next data, and the process returns to S70. On the other hand, when the reacquisition fails (S79: No), the process proceeds to S80. In S80, the data is not available at this time. That is, the availability of the corresponding record in the file management table is set to “No”. Then, the check target data is set to the next data, and the process returns to S70. In the case of the present embodiment, since data is reacquired using the acquisition histories 1 to 3, the probability of success increases.

Next, the detailed processing flow in S74, S76, and S78 described above will be described in S100 to S112 of FIG.
In S100 of FIG. 5, it is determined whether an acquisition destination is set in the acquisition information. When nothing is set as the acquisition destination (S100: No), the re-acquisition fails. On the other hand, when the acquisition destination is set, the process proceeds to S101.

  In S101, it is determined whether or not the acquisition source is HOST. When the acquisition destination is HOST (S101: Yes), the process proceeds to S102. In S102, connection is made to the host indicated by the attribute of the file management table, and the corresponding data is acquired. In the subsequent S103, it is determined whether or not the data can be reacquired in S102. If the data can be reacquired (S103: Yes), the process proceeds to S112. On the other hand, when the reacquisition cannot be performed (S103: No), the reacquisition fails and ends.

In S100, when the acquisition destination is not HOST (S101: No), the process proceeds to S104.
In S104, it is determined whether the acquisition destination is a LAN. When the acquisition destination is the LAN (S104: Yes), the process proceeds to S105. In S105, connection is made to the karaoke apparatus indicated by the attribute of the file management table, and the corresponding data is acquired. In the subsequent S106, it is determined whether or not the data can be reacquired in S105. If the data can be reacquired (S106: Yes), the process proceeds to S112. On the other hand, when the reacquisition cannot be performed (S106: No), the reacquisition fails and ends.

In S104, when the acquisition destination is not a LAN (S104: No), the process proceeds to S107.
In S107, it is determined whether the acquisition destination is an external medium. When the acquisition destination is an external medium (S107: Yes), the process proceeds to S108. In S108, the user is requested to insert the external media 6 indicated by the attribute of the file management table into the playback device (for example, the request is made by controlling the video playback device 24 and displaying it on the display device 26). Corresponding data is acquired from the external medium 6. In the subsequent S109, it is determined whether or not the data can be reacquired in S108. If the data can be reacquired (S109: Yes), the process proceeds to S112. On the other hand, if the reacquisition cannot be performed (S109: No), the reacquisition failure ends.

  In S107, if the acquisition destination is not an external medium (S107: No), the process proceeds to S110. In S110, data is recreated by the restoration method indicated by the attribute of the file management table, and the process proceeds to S112.

In S112, the file management record is changed to the above-described reacquired or recreated, and the reacquisition is completed successfully.
Next, how each karaoke apparatus 1a-1c (karaoke A-C) performs the process mentioned above demonstrates and demonstrates a mode that data is acquired or re-acquired.

Fig.6 (a) is a figure which shows the step of acquisition and reacquisition of the data of karaoke AC.
First, as shown in FIG. 6A, karaoke A acquires data 1 from the host A (S1), and acquires data 2 from the external media DVD (S2). Thereby, the file management record in Karaoke A becomes as shown in FIG. That is, a record with the file name “Data 1”, the availability is “Yes”, the CRC value is “1234”, the acquisition destination of the acquisition history 1 is “HOST”, the attribute is “Host A”, and the file name is “Data” 2 ”,“ Yes ”for availability,“ 5678 ”for CRC value,“ DVD ”for acquisition history 1 and“ Ver 1.27 ”for attribute are stored in the file management table.

  Next, as shown in FIG. 6A, karaoke B acquires data 1 (S3) and data 2 (S4) from karaoke A. The file management record in Karaoke B at this time is as shown in FIG. That is, the file name is “data 1”, the availability is “possible”, the CRC value is “1234”, the acquisition history 1 is acquired from “LAN”, the attribute is “karaoke A”, and the acquisition history 2 is received from karaoke A The record of the acquisition destination “HOST” and the attribute “Host A”, which is a transfer of the record acquisition history 1 of the record, the file name “Data 2”, the availability “Yes”, the CRC value “5678”, and the acquisition The record 1 of the history 1 is “LAN” and the attribute is “Karaoke A”. The acquisition history 2 of the data 2 is the acquisition destination “DVD” and the attribute is “Ver 1.27” when the acquisition history 1 of the record received from the karaoke B is transferred, but the external media interface 14 is included in the karaoke B. Since there is no data, the acquisition attribute 2 of the data 2 is deleted (S5).

  Next, as shown in FIG. 6A, karaoke C acquires data 1 (S6) and data 2 (S7) from karaoke B. The file management record in karaoke C at this time is as shown in FIG. That is, the file name is “data 1”, the availability is “possible”, the CRC value is “1234”, the acquisition history 1 is acquired from “LAN”, the attribute is “karaoke B”, and the acquisition history 2 is received from karaoke B The record of the acquisition destination “LAN” and the attribute “Karaoke A”, which is a transfer of the acquisition history 1 of the record, the file name is “Data 2”, the availability is “Yes”, the CRC value is “5678”, and the acquisition is The acquisition destination of the history 1 is “LAN” and the attribute is “Karaoke B”, and the acquisition history 2 is the content of the acquisition destination “LAN” and the attribute “Karaoke A”, which is a transcription of the acquisition history 1 of the record received from the karaoke B. It is a record. The acquisition history 3 of the data 1 is the acquisition destination “HOST” and the attribute is “host A” when the acquisition history 2 of the record received from the karaoke B is transferred, but the karaoke C cannot communicate with the host computer 2. The acquisition attribute 3 of data 2 is deleted (S8).

  FIG. 6 (e) shows the file management record in karaoke C when the acquisition from karaoke B succeeds (S10) after an error occurs in data 1 in karaoke C and acquisition from karaoke B fails (S9). FIG. Since karaoke C has no connection means with the host, the acquisition history 2 of data 1 is deleted (S11).

Thus, according to the karaoke apparatuses 1a, 1b, and 1c of the present embodiment, the following effects can be obtained, and various modifications can be considered.
(1) When the music information stored in the hard disk 13 of the karaoke apparatus 1a, 1b, or 1c is damaged due to vibration or a momentary power interruption, the damaged data can be detected, and the damaged data Can be reacquired and data can be restored according to the acquisition history.

(2) In the present embodiment, three histories of acquisition history 1 to acquisition history 3 are stored, but this number can be any number.
(3) In the above embodiment, music information used for karaoke performance and music information such as image information are subject to error check. However, for example, an error check is performed on an application program (performance program) for the CPU 14 to execute karaoke performance processing. It may be a target. Of course, other information may be used.

  (4) In the above embodiment, all pieces of music information stored in the hard disk 13 are subject to error checking, but not all data may be included. For example, the presence / absence of necessity of error detection is stored in the hard disk 13 corresponding to the song information, and error check (and data restoration) is performed only for the song information stored when there is a need for error detection. You may make it perform. Moreover, it is good also considering only the music information with much request frequency.

  (5) Further, as the data, for example, application program data for performing karaoke performance may be included. If the application program data is damaged, the karaoke performance process itself is not normally executed even if the musical tone information is normal. Therefore, it may be considered that such an application program is information with a higher need for error detection.

  (6) Moreover, not only a karaoke apparatus but another information processing apparatus is realizable. For example, when there is a request from a user or the like, a device that executes processing using processing execution information stored in information storage means such as a hard disk executes processing using damaged data. If this happens, it is impossible to provide appropriate information to the user. Therefore, error checking as described above and data restoration as necessary are effective countermeasures.

(7) In the above embodiment, the CRC value is adopted as the error detection information. However, other information that can contribute to error detection, such as using a sum value such as a checksum, may be used.
(8) In the above embodiment, the karaoke devices 1a, 1b are connected to the host computer 2, but all the karaoke devices 1a, 1b, 1c may be connected to the host computer 2, or the karaoke device. Only 1a may be connected to the host computer 2. Further, the external media interface 28 may be configured to be provided in all of the karaoke apparatuses 1a, 1b, and 1c.

It is a block diagram which shows the structure of a karaoke system. It is explanatory drawing of the file management table which collected the information for restoring music information. It is explanatory drawing showing the process at the time of storing music information in a hard disk. It is explanatory drawing showing the check and restoration process of music information. It is explanatory drawing showing the re-acquisition process of music information. It is explanatory drawing which shows the example of acquisition and re-acquisition of music information, and the state of the file management table in this example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1a, 1b, 1c ... Karaoke apparatus, 2 ... Host computer, 3 ... Communication network, 10 ... Input device, 12 ... EEPROM, 13 ... Hard disk, 14 ... CPU, 15 ... RAM, 17 ... Network interface, 18 ... Sound source reproduction apparatus , 20 ... an amplifier, 22 ... a speaker, 23 ... a microphone, 24 ... a video reproduction device, 26 ... a display device.

Claims (12)

An acquisition means for acquiring data;
Storage means for storing data acquired by the acquisition means;
In a computer system comprising determination means for determining whether or not the data stored in the storage means is damaged,
The acquisition unit stores acquisition source identification information, which is information for specifying an acquisition source of acquired data, in association with the acquired data in the storage unit,
When it is determined by the determination means that the data stored in the storage means is damaged, the acquisition source is specified based on the acquisition source identification information stored in the storage means corresponding to the data, and specified acquisition A computer system comprising re-acquisition means for re-acquiring the data from the beginning and storing the data again in the storage means. The computer system of claim 1,
The computer system characterized in that the acquisition means acquires the data via a network or from a recording medium. The computer system according to claim 1 or 2,
The storage means stores error detection information calculated based on the content of the data,
The computer system according to claim 1, wherein the determination unit determines whether or not the data is damaged based on error detection information stored in the storage unit and data stored in the storage unit. The computer system according to claim 3.
The error detection information is included in advance in the data acquired by the acquisition means,
The acquisition unit stores data including the error detection information in the storage unit. The computer system according to claim 3 or 4,
The acquisition unit generates the error detection information based on the acquired data, and stores the data and the error detection information in the storage unit. In the computer system according to any one of claims 1 to 5,
A computer system comprising distribution means for distributing data stored in the storage means to another computer system. The computer system according to claim 6.
The distribution unit distributes the data stored in the storage unit and the acquisition source identification information of the data to the other computer system. The computer system according to any one of claims 1 to 7,
The acquisition unit acquires data and acquisition source identification information of the other computer corresponding to the data from another computer system via a network, and acquires the acquired other computer from the storage unit A new acquisition source identification information obtained by adding the other computer as acquisition source information to the original identification information is generated and stored. The computer system according to claim 8.
In the case where the acquisition source identification information that cannot be acquired from the own computer system is included in the acquisition source identification information of the other computer, after the acquisition source identification information that cannot be acquired is deleted, A computer system that generates new acquisition source identification information by adding acquisition source information to the other computer. In a computer system provided with the 1st computer system which is the computer system of Claim 7, and the 2nd computer system which is the computer system in any one of Claims 1-9,
The acquisition unit in the second computer system has a function of acquiring at least the data distributed by the distribution unit in the first computer system.   A program for realizing each means in the computer system according to claim 1 by a computer.   The karaoke system provided with the computer system in any one of Claims 1-10.

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