JP2003244598A - Video archive device and multimedia archive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device that can store data of a large capacity, such as image data which users desire to store, safely and by distributing them on the network. <P>SOLUTION: This video archive device comprises an image signal recording part which inputs image signals and records them as digital moving picture data on a hard disc, a recorder which records the digital moving picture data, and a distribution archive processing part which divides the digital moving picture data in the recorder into a plurality of parts, stores them in a plurality of servers over the network, fetches the stored data through the network, and restores them to the original state in the recorder. The device also comprises an image signal reproduction part which reproduces and displays the digital moving picture data in the recorder and a network interface part which interfaces with the networks. This video archive device is characterized by the function to store digital moving picture data in a plurality of servers on the network. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed data archive system and a network terminal device having a function of storing data downloaded from the Internet or the like in a plurality of data storage locations existing on a network.

[0002]

2. Description of the Related Art Currently, a service is provided for downloading content data such as music data to a user's computer or the like via the Internet. However, since the moving image / audio data has a large data size, the user cannot store many downloaded contents in his / her computer or the like due to the limitation of the hard disk capacity of his / her computer or the like.

BS digital broadcasting has started, and devices for recording TV programs in the form of digital data without deterioration of image quality have come on the market. The recorded data is recorded and stored on a video tape or the like, but if the number of recorded images increases, it becomes difficult to secure a storage place for the video tape, and management becomes complicated.

On the other hand, as a backup technology for valuable digital data, international publication number WO 01/46808 A1 "Distributed data archive device and system" has been filed by the same applicant as the present application. WO 01/46808 A1 discloses a portable recording medium reading / writing means, an authentication means, and a division encryption means for dividing and encrypting target data to be stored,
What is claimed is: 1. A distributed data archive device comprising decryption integration means for performing the reverse process, data management means for managing stored data, and network communication means, the data being held by the portable recording medium. According to the storage location information and data storage procedure information, the target digital data,
The data is divided and stored in a plurality of servers on the network, and is divided and stored in a plurality of servers on the network according to the data storage location information and the data storage procedure information held by the portable recording medium. There is disclosed a distributed data archive device which decrypts and synthesizes target data, and provides it to a user.

In WO 01/46808 A1, data storage location information and data storage procedure information regarding storage data are recorded in a predetermined location in the device or in a portable recording medium such as an IC card. In the latter case, if this portable recording medium is available, the stored data can be accessed on a distributed data archive device that is different from the distributed data archive device used when the data was stored. is there.

However, WO 01/46808 A1 was invented as a device or system for the purpose of solving the problem of general data storage, and has a large capacity of video or multimedia expected to be used in the future. It is not intended for the case where the content data of is mainly stored and managed privately.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of such problems, and distributes a large amount of data such as video data that a user wants to store in a safe form on a network. It is an object of the present invention to provide a device that can be stored by storing it.

[0008]

A first invention for solving the above-mentioned problems is a video archive device characterized in that digital moving image data can be stored and managed in a plurality of servers on a network, and its most basic A first aspect of the present invention is a video signal recording unit that inputs a video signal and records it as digital moving image data in a recording device such as a hard disk; a recording device that records the digital moving image data created by the video signal recording unit; A distributed archive process that divides the digital video data recorded in the device into multiple parts and stores them in multiple servers on the network, and also retrieves the stored data through the network and restores it to the original state on the recording device. Section, a video signal reproducing section for reproducing and displaying digital moving image data on the recording device, and a network. It is characterized in further comprising a network interface unit for taking interface.

Due to the function of the distributed archive processing unit, it is not necessary to record and store a large amount of data such as video data in an external recording medium such as a magnetic tape, and a storage space for the recording medium is not required, so that storage management is possible. No worries.

According to a more preferred second embodiment of the first invention, in the video archive apparatus of the first aspect, the distributed archive processing section comprises a dividing means for dividing the digital moving image data to be stored into a plurality of parts. , An integrated restoration means for restoring the divided and stored data to the original single data file, a network communication means for transferring the data file by the communication protocol defined between the data server storing the stored data, and a new A data management means for recording data storage location information and a method for dividing data to be stored when data is stored, and a data management means for recording the data storage procedure information. It is a video archive device that is composed of.

If data is divided and stored in a plurality of servers, it is difficult to steal valuable data. According to the data storage location information and the data storage procedure information recorded in the built-in memory device, the video archive device divides the target digital data into a plurality of servers on the network for each divided portion and transfers it. In addition to storing, according to the recorded data storage location information and data storage procedure information, take out the target data that is divided and stored in multiple servers on the network, synthesize and restore it to the original file, By providing it to the user, a large amount of data can be stored without being restricted by the storage capacity of the video archive device installed at home.

The user can retrieve the stored data from the network at any time, restore the original data and reproduce it by designating the stored data file in which the data storage location information and the data storage procedure information are recorded. it can.

Further, the dividing means can divide the target data and then encrypt the divided data, or can generate a plurality of divided data to be divided and stored after encryption. Whether the encryption key information necessary for encryption / decryption is recorded in the data storage procedure information, and the integrated restoration means decrypts the stored divided data according to the data storage procedure information and then integrates the divided data. Alternatively, if the video archive device is configured to restore the original data by first integrating it and then decoding it, a stronger effect can be obtained.

If individual divided data are encrypted, it is difficult to know the original data, and even if the data is stored on an open network such as the Internet, there is a substantial risk of being stolen when the data is retrieved. There is no reason. Therefore, it is possible to archive data such as personal images recorded with a digital video camera with confidence.

Further, the dividing means can add the dummy data according to a certain rule before or after dividing the target data, encrypting the divided data, or encrypting the data and then dividing the data. The means records the dummy data addition rule in the data storage procedure information,
According to the data storage procedure information, the integrated restoration means removes the dummy data before or after performing the integration of the divided data stored, or the integration after the decoding, or the integration and the decoding after the integration. With this configuration, even if the data is stolen and decrypted, it cannot be completely restored. Therefore, even if the stored data is stolen, the security is further enhanced.

Further, by storing the divided data in a plurality of data servers with redundancy, even if one of the data servers goes down, the original data can be recovered only from the data of other normal servers. The video archive device can also be configured for restoration. Considering that the data server itself goes down, such a distributed data archive mechanism is safer.

In addition, when the data to be distributed and stored is compressed and stored using a reversible data compression algorithm in the set of dividing means and integrated restoring means in the video archive apparatus of the first invention, integrated restoration is performed. It may have a configuration in which a processing step of decompressing the compressed and recorded data is added.

A second invention for solving the problem is to provide a video signal recording section for inputting a video signal and recording it as digital moving image data in a recording device such as a hard disk, and an audio signal for recording it as digital audio data in the recording device. An audio signal recording unit, a media drive device for reading out video, audio, and still image data recorded on a storage medium, data created by the video signal recording unit and the audio signal recording unit, or data read by the media drive device. The recording device for recording the data and the data recorded on the recording device are divided into a plurality of parts and stored in a plurality of servers on the network, and the stored data is taken out through the network and the original data is recorded on the recording device. The distributed archive processing unit that restores the state and the moving image data or still image data on the recording device. By providing a video signal reproducing unit for reproducing and displaying as an image signal, an audio signal reproducing unit for reproducing and displaying audio data on the recording device, and a network interface unit for interfacing with a network, multimedia data can be networked. It is a multimedia archive device that can be stored and managed in the above multiple servers.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. First, in order to promote a correct understanding of the present invention, a distributed data archive apparatus which is one embodiment of WO 01/46808 A1 which is the basis of the present invention will be first described, and then an embodiment according to the present invention will be described. I will describe a video archive device.

FIG. 1 is an overall configuration diagram of a distributed data archive system. 3 is a distributed data archive device. The distributed data archive device 3 includes a plurality of data servers 2 (2a, 2a in FIG.
b), 2c, ...) to form a distributed data archive system 1. The network 9 may be the Internet. The distributed data archive device 3 can be said to be the core device of the system 1. The distributed data archive device 3 includes a download means 11, a division / encryption means 13, and a decryption / integration means 1.
4, data management means 15 and network means 16 are provided. On the other hand, the data server 2 includes a server body 20 and an external storage 21.

The user obtains content data such as music data from the server 8 on the network 9 by designating a URI (Uniform Resource Identifier) through the download means 11. The obtained data can be divided and encrypted by the function of the dividing / encoding means 13 and can be stored in the plurality of data servers 2 in pieces. When data is saved, the data management means 15 works to create management data that records the data save location and save procedure.

The user activates the decryption / integration means 14 by designating the management data file for the data once stored in the data server 2, and restores the stored data to the original data. You can
The decryption / integration means 14 decrypts the once stored data if it is encrypted, and restores the original state by connecting the divided pieces of data into one.

The distributed archive device 3 includes a download means 11 and a division / encryption means 1 in a computer body.
3, the decoding / integration means 14, the data management means 15, and the network means 16 can be realized by incorporating software program modules for realizing the respective functions. Therefore, although not shown in FIG. 1, a storage device such as a hard disk device is incorporated. The download means 11 uses a WWW (World Wide Web) browser incorporated in the computer main body together with the OS or available from the Internet. Depending on the data format of the content data to be downloaded, another program may be required, but such a program is usually available from the Internet for a fee or free of charge. The division / encryption means 13, the decryption / integration means 14, the data management means 15, and the network means 16 will be described later. 19
Is management data, and is a distributed data archive device 3
It is recorded in the built-in storage device.

FIG. 2 is a diagram for explaining the management data 19. The management data 19 is stored in the built-in hard disk device,
It is recorded in a folder prepared for each data file to be distributed and stored under a management folder that exists only for each user. In FIG. 2, there are folders corresponding to file1, file2, and file3 in the management folder of user A. Therefore, it can be seen that these three files have been stored and processed by the distributed data archive device 3. Management data 19 which is information necessary for restoring the file in each of the folders, that is, a file division method, an encryption method, an order of division / encryption, an identification character, a number or a condition indicating a redundant storage method. A list of formula and archive server addresses (URIs) is created and recorded. The management folder of user A stores the password of user A, and the password is required when opening the management folder.

FIG. 7 is a diagram for explaining another aspect of the method of configuring the management folder and management data 19 for each user.
As shown in FIG. 2, the contents of the management data 19 are directly written to
And instead of recording in each folder of file3,
Information for accessing management data 19 (URI, etc.)
Is a way to have. Therefore, in the case of FIG. 7, not only the data file to be saved but also the contents of the management data of the data file are stored in the data server 2 on the network.
Recorded in. The advantage of the method of indirectly recording the contents of the management data 19 in this way is that the storage space of the management folder for each user can be saved.

FIG. 3 is a flowchart showing the flow of operation of the distributed data archive device 3. The operation of the distributed data archive device 3 will be described below according to the flow of FIG. In the following description of the flow, it is assumed that the configuration of the management folder and the management data 19 for each user is the case of FIG.

When the user tries to open his / her own management folder, the user requests the password set in the folder (S
1). Only when the correct user password is entered here, the contents of the management folder of the user is read out by the function of the data management means 15, the name of the data file stored in the past in the outside is displayed, and the operation menu is also displayed. Display (S5). Next, the operator waits for interactive operation input (S7).

When the operator selects new storage from the operation menu, the operator selects the distributed data archive device 3
The target file is designated by a command operation of the OS of the computer (S11). Next, the file division method is designated from the menu screen (hereinafter the same) provided by the data management means 15 (S13). File division methods include a case where the effective data amount in one divided file is fixed, and a method in which the effective data amount is determined by a mathematical formula for each divided file and then dummy data is filled. In either case, it is assumed that the split file created has a fixed length. The number of divided files, the effective data length of each divided file, and the size of the divided files thus determined are determined.
Next, decide the encryption method. This is for each split file,
Whether to encrypt or not, if yes, an encryption method and an encryption key are set (S17).

Next, the redundant storage method is designated (S1).
9). As the redundant storage method, two methods, which are generally used in RAID disks and the like, and mirror file creation and parity file creation can be selected. In the case of mirroring, each divided file is stored in two different primary and secondary servers, and no special parameter specification is required. on the other hand,
In the case of creating a parity file, a block length, which is a unit for dividing data into a plurality of files, and a division number parameter indicating how many files are to be divided are specified.

Next, the division / encryption means 13 is called, the division encryption is performed according to the method specified so far, and the division file is created (S23). In the case of redundant storage using the parity file creation method, a plurality of split files created by the split / encryption means 13 are simply joined together to form one data file, and this is set according to the previously specified parameters. Divide into multiple recording files and create one parity file for data restoration.

Next, secure a storage server (S29),
Transfer one split file to the storage server (S3
1). In the case of redundant storage by the mirroring method, the divided files are transferred to two different primary and secondary servers. In the case of redundant storage using the parity file creation method, the transfer targets are the plurality of recording files and one parity file described above.

This transfer is performed by the network means 16 by a file transfer protocol (hereinafter referred to as FT) which is a standard technology of the Internet.
It is executed according to P). Specifically, for example, a setting file in which about 10 URIs of the FTP server for storage are recorded is prepared in advance in the external storage device of the distributed data archive device 3 and is described in the URI list of this setting file. One of the FTP servers is properly selected, the divided data file is transferred, and if it is successfully transferred, the next divided file is transferred to the next FTP server in the URI list. Good. If the transfer fails for some reason, change to the next FTP server in the URI list and transfer the divided data file again. In this way, steps S29 and S31 are executed. This is repeated until the necessary number of divided files have been transferred. Finally, the data management means 1
By the function of 5, the management data 19 in which the stored data file name, the data storage procedure (division method, encryption method, redundant storage method) and the URI list of the transfer destination FTP server are recorded in order, is created for the user. The data file is recorded in the folder with the file name of the data file to be outsourced under the personal folder (S37). This completes the archiving of one data file. The process returns to step S5 and waits for the next event.

When the operator designates the extraction of the stored data, first, the contents of the management folder of the operator are displayed, and the management data file existing in the folder corresponding to the data file desired to be read is read (S41). ), The URI of the storage server of the target file and the data storage procedure information are obtained. Next, the divided file of the target file (recording file when redundantly stored by the parity file creation method) is read from the storage server and decrypted by the decryption / integration means 14 (S43). Similarly, by the function of the decryption / integration means 14, unnecessary dummy data is removed from the divided files from the description of the file division method, and the files are correctly joined and restored into one file, which is the same as the management data 19 being stored. Place the restored file in the folder (S51). The data thus stored can be browsed again by the user. The information required for data restoration is recorded in the management data file 19 of the target file, and the distributed data archive device 3 automatically performs the decryption integration processing, so the user needs to restore it from the plurality of divided files. There is no need to be aware of it.

When the operator selects the end from the menu in step S5, the files restored up to that point are erased (S53), and the operation of the distributed data archive device 3 ends.

Incidentally, in FIG. 3, the flow is such that after the extracted divided files are decrypted (S43), the whole is integrated (S47), but the order of division and encryption is included in the data storage procedure information. If the information indicating is recorded, the decoding / integration means 14 can be configured to perform the decoding at which stage according to the target data in accordance with this information.

Further, the dividing / encoding means 13 can add the dummy data according to a certain rule before or after dividing the target data, encrypting the divided data, or encrypting and then dividing the data. If the storage procedure parameter is designated in the management procedure 19, the dummy data removal processing is also performed in steps S23 and 43.

The distributed data archive device 3 has been described above in detail. By the functions of the division / encryption unit 13, the decryption / integration unit 14, and the data management unit 15, the data file downloaded from the server 8 through the Internet 9 can be divided and stored in a plurality of data servers 2 on the network. The user does not need to have a storage space of a capacity necessary for storing a large number of download files and the like on the distributed data archive device 3. The user only needs to manage the management data 19, and the complexity of managing a large amount of data is released.

Next, as an embodiment of the present invention, a video data archive device to which a mechanism for dividing the data in the distributed data archive device 3 and distributing and storing the data on the network is applied will be described. FIG. 4 is an overall configuration diagram of the video data archive device 4. The video data archive device 4 is a dedicated device that uses the distributed archive function of the distributed data archive device 3 to specialize in storage management of video image data. In FIG. 4, 30 is a video signal recording unit. Terrestrial or BS analog broadcasting TV signals received by a TV antenna are converted into digital signals, or digital broadcasting TV signals or digital video signals from digital video cameras are received, and MPEG system compression encoding is performed. , The video data is recorded on the hard disk 70 as digital data. Video signal recording unit 30
Is an A / that converts the signal from the analog broadcast receiver into an AD signal.
D conversion unit 31, frame synchronization unit 33 that captures a video signal as one frame of still image data, MPEG encoding unit 34 that performs MPEG encoding compression encoding, signal from digital broadcast receiver or image from digital video camera A DV decoding unit 32 that receives a signal and converts the signal into a data format that can be processed by the MPEG encoding unit 34 is provided.

Reference numeral 40 is a video signal reproducing section. The video data file compressed and encoded in the MPEG format recorded on the hard disk 70 is read and decoded into the original form, and further converted into an analog signal to be a video signal to be output to the TV monitor. The video signal reproducing section 40 is
An MPEG decoding unit 41 and a D / A conversion unit 42 are provided.

Reference numeral 70 is a hard disk. The minimum capacity required to store one movie content data such as a movie is required.

Reference numeral 50 is a distributed archive processing section. The details are shown in FIG. Division / encryption means 53, decryption / integration means 54, data management means 55, network means 5
6 is the distributed data archive device 3 described above,
The functions of the division / encryption means 13, the decryption / integration means 14, the data management means 15, and the network means 16 are the same.

Reference numeral 60 is a network interface section. It is a part that takes a physical and electrical interface with the Internet 9. 90 is a control unit. A menu that receives a command from the user's remote controller or the like to the sensor 92, controls the operations of the video signal recording unit 30, the video signal reproducing unit 40, and the distributed archive processing unit 50, and prompts the user to operate the remote controller. Alternatively, a simple text character is displayed on the small liquid crystal display 91 dedicated to the video archive device.

FIG. 6 is a flow chart for explaining the procedure for using the video data archive device 4. First, the user records a TV program or data from a digital video camera by operating a remote controller or the like (S100). In the case of terrestrial broadcasting or BS analog broadcasting, connect the cable from the TV receiver to the terminal 38, and in the case of digital broadcasting or digital video camera, connect the cable of the TV receiver or the digital video camera to the terminal 39 and input the signal. , MP
The EG encoded data is created, given an appropriate name, and recorded on the hard disk 70.

Next, the distributed archive processing section 50 works to store the created video data file in several servers on the Internet (S110). At this time, the management file 59 of the video data file is created by the function of the data management means 55, and is recorded in the storage area managed by the distributed archive processing section 50 (actually, the hard disk 70 is sufficient). The data storage parameter at this time may be determined in advance by remote control operation or the like, and may be set in accordance with it, or may be set each time. It is assumed that the data management means 55 reads out the data storage parameter and displays it on the display 91, or displays the data storage parameter prompting the user to select and reads and sets the selection result.

By selecting the management file 59 of the archived video data file, the user can re-read and assemble the saved data through the Internet 9 and reproduce it as the original video data file on the hard disk 70 at any time. Yes (S120).
Then, the reconstructed video data file is reproduced to enjoy the image (S130). When the playback is finished, the video data file is deleted. The hard disk 70 may theoretically have a space that can accommodate a video data file for one moving image content.

The video archive device 4 has been described above as the embodiment of the first invention. Next, an embodiment of the multimedia archive device according to the second invention will be described.

FIG. 8 is a block diagram showing an embodiment of the multimedia archive device. Reference numeral 80 is an audio signal recording unit. The audio compression encoding unit 81 that compresses and encodes the digital audio signal is built in, and the audio signal is recorded in the hard disk 70 as digital data. Reference numeral 93 is a media drive device. CD, DVD
A storage medium such as the above may be read and the video / audio may be reproduced through the video signal reproducing unit 40 or the audio signal reproducing unit 88, or may be temporarily recorded in the hard disk 70. The audio signal reproducing unit 88 converts digital data of only audio into an analog audio signal and outputs it to the audio signal output terminal 48. The other components are the same as those of the video archive device 4. After all, the multimedia archive device 5 includes the audio signal recording unit 80, the media drive device 93, and the audio signal reproducing unit 8 in addition to the video archive device 4.
8 is added.

The multimedia archive device 5 is a TV
It is possible not only to archive programs and digital videos, but also to archive stored media data and archive them as audio-only data. Since the distributed archive processing unit 50 is the same as that of the video archive device 4,
The function itself of the distributed archive is the same as that of the video archive device 4.

The multimedia archive device 5 has been briefly described above. Here, the distributed archive processing unit 50 commonly used will be supplemented. When the division / encryption means 13 creates the division file in step S23 of FIG. 3, it is possible to include a process of compressing the division file by using a reversible compression algorithm at the end thereof.
In that case, the decryption / integration means 14 must first perform the processing step of decompressing when decrypting the divided files in step S43 of FIG. The compression algorithm used at this time may be any algorithm as long as it can be reversibly compressed. So you can't expect dramatic compression, but you can save some archive space.

[0050]

As described above, according to the video data archive device or the multimedia archive device of the present invention, a large amount of content data is distributed and stored in other servers on the network. Does not need to have a large storage capacity, as long as there is a management file for the stored content data, the stored data can be restored and played back at any time, so there is no need to worry about storing a large amount of video tapes or organizing. There is a remarkable effect. Since the stored data can be stored in multiple servers with redundancy, it is highly safe. The stored data can be encrypted and stored as needed, so there is no need to worry if it is eavesdropped when the data is retrieved from the storage server on the Internet. If desired, the archive space can be saved by compressing and storing it. In addition, the storage server is F, which is an Internet standard protocol.
If you can connect by TP, no special tricks are required, so you can choose the storage location quite freely, which is very convenient.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a distributed data archive device 3.

FIG. 2 is a diagram showing a configuration of a management folder and management data.

FIG. 3 is an operation flowchart of the distributed data archive device 3.

FIG. 4 is a configuration diagram of a video archive device 4 according to an embodiment of the present invention.

FIG. 5 is a detailed explanatory diagram of a distributed archive processing unit 50.

FIG. 6 is a flow chart of use of the video archive device 4.

FIG. 7 is a diagram showing another aspect of the configuration of a management folder and management data.

FIG. 8 is a configuration diagram of a multimedia archive device 5 according to an embodiment of the present invention.

[Explanation of symbols]

1 distributed data archive system 2 data server 3 Distributed data archive device 4 Video archive device 5 multimedia archive device 8 content server 9 network 11 Downloading means 13 Division / encryption means 14 Decryption and integration means 15 Data management means 16 Network means 19 Management data 30 Video signal recording section 31 A / D converter 32 DV decoding unit 33 frame synchronization section 34 MPEG Encoding Unit 38 Analog video signal input terminal 39 Digital video signal input terminal 40 Video signal playback unit 41 MPEG decoding unit 42 D / A converter 49 Video signal output terminal 50 Distributed Archive Processing Unit 53 Division / encryption means 54 Decryption / Integration Means 55 Data management means 56 Network means 59 Management data 60 Network interface section 70 Hard disk drive 80 Audio signal recording section 88 Audio signal playback unit 90 Control unit 91 LCD monitor 92 Remote control signal sensor 93 Media Drive Device

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Claims (8)

[Claims] 1. A video signal recording unit for inputting a video signal and recording it as digital moving image data in a recording device such as a hard disk, a recording device for recording the digital moving image data created by the video signal recording unit, and recording in the recording device. A distributed archive processing unit that divides the digital moving image data into a plurality of parts and stores them in a plurality of servers on the network, retrieves the stored data through the network, and restores the original state on the recording device. A video signal reproducing section for reproducing and displaying the digital moving image data on the recording device,
A video archive device characterized by being able to store and manage digital moving image data in a plurality of servers on the network by including a network interface unit for interfacing with a network. 2. The video archive device according to claim 1, wherein the distributed archive processing section divides the digital moving image data to be stored into a plurality of parts.
Integrated restoration means to restore the divided and stored data to the original single data file, network communication means to transfer the data file by the communication protocol defined between the data server storing the stored data, and new data A video archive device comprising: a data management means for recording data storage procedure information, which records a data storage location and a method of dividing the data to be stored when the data is stored. 3. The dividing means can divide the target data and then encrypt the divided data, or can generate a plurality of divided data to be divided and stored after encryption. Whether the encryption key information necessary for encryption / decryption is recorded in the data storage procedure information, and the integrated restoration means decrypts the stored divided data according to the data storage procedure information and then integrates the divided data. 3. The video archive device according to claim 2, wherein the original data is restored by integrating the data first or decoding the data first. 4. The dividing unit can add dummy data according to a certain rule before or after dividing the target data, and the data managing unit adds the dummy data adding rule to the data storage procedure information. The video archive device according to claim 2, wherein the integrated restoration means removes the dummy data before or after integrating and storing the divided data stored therein, according to the data storage procedure information. 5. The dividing unit can add dummy data according to a certain rule, before or after dividing the target data, encrypting the divided data, or encrypting the data and then dividing the data. The means records the dummy data addition rule in the data storage procedure information, and the integrated restoration means integrates or divides the stored divided data according to the data storage procedure information, and then integrates, or 4. The video archive device according to claim 3, wherein the dummy data is removed before or after the integration and the decoding. 6. By dividing data to be stored and storing the data in a plurality of data servers on the network with redundancy, even if one of the data servers goes down, the data of another normal server is stored. The video archive device according to claim 1, wherein the original data can be restored only from the video archive device. 7. A set of dividing means and integrated restoring means according to claim 3, wherein the data to be distributed and stored is compressed and stored using a reversible data compression algorithm. Video archive device characterized by. 8. A video signal recording unit for inputting a video signal and recording it as digital moving image data in a recording device such as a hard disk, an audio signal recording unit for inputting an audio signal and recording it as digital audio data in the recording device, and a storage medium. A media drive device for reading out video, audio, and still image data recorded in a recording device, and a recording device for recording data created by the video signal recording part and the audio signal recording part or data read out by the media drive device; A distributed archive processing unit that divides the data recorded in a recording device into a plurality of parts and stores them in a plurality of servers on the network, and retrieves the stored data through the network and restores the original state on the recording device. And a video image that reproduces and displays video data or still image data on the recording device as a video signal. By providing an image signal reproducing unit, an audio signal reproducing unit for reproducing and displaying the audio data on the recording device, and a network interface unit for interfacing with a network, multimedia data can be transmitted to a plurality of servers on the network. A multimedia archive device that can be stored and managed.