JP2006270846A - Data distribution server, system, and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data distribution server capable of preventing deterioration in the quality distribution data by avoiding congestion even when a plurality of accesses are concentrated to a data distribution facility of a data distribution company, and provide a data distribution system and a data distribution method. <P>SOLUTION: The data distribution system includes: a data distribution company facility 2 of a data distribution company for distributing data via the Internet 4; a user terminal 1 of a user subscribed to a service; and a data distribution server 3 with a storage means 6 for storing data to particular storage areas. The data distribution company facility 2 transmits data to the data distribution server 3, and the data distribution server 3 applies copy processing to the received data to store a plurality of the same data to storage areas of the storage means 6, selects the corresponding data among the stored data in accordance with contents of a data distribution request access from the user terminal 1, and distributes the selected data to the user terminal 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data distribution server, a data distribution system, and a data distribution method in a system for distributing data from a data distribution server to a user terminal via a communication network such as the Internet.

  As a typical video distribution method for distributing video to a user via a communication network such as the Internet, a so-called streaming technique for downloading video data (video content) from a video distribution server on the communication network and simultaneously reproducing the video is provided. There is a delivery method used. The streaming technology includes three points: an encoder that creates (encodes) streaming-compatible data, a distribution server that distributes data, and a player that receives and reproduces data. This video distribution method is widely recognized, and many video distribution software such as Real (registered trademark) and QuickTime (registered trademark) adopt streaming technology.

  In the video distribution method using streaming technology, video playback on the user terminal is executed simultaneously with the video data distribution. Therefore, when access from the user terminal is concentrated and Internet traffic is congested, network transmission over the communication network In a communication environment where a sufficient bandwidth is not secured, the playback video is distorted or frozen due to a transmission delay, and the quality of the delivery video is degraded. For this problem, various measures are taken according to the network transmission band. For example, a measure is taken to perform processing for distributing video with an optimal encoding speed in accordance with an available network transmission band.

  More specifically, the user terminal, for example, the amount of video data (packet loss amount) that could not be accurately received from the video distribution system due to partial transmission loss of the video data, or temporal fluctuation of the video data arrival ( Information on the amount of delay fluctuation) or information on the amount of video data (buffering amount) before reproduction that has already arrived at the user terminal is returned to the video distribution system. When the video distribution system estimates the degree of congestion of the communication network between the video distribution system and the user terminal from these pieces of information and determines that the video network is congested, the video distribution system transmits the video data transmission bandwidth to the user terminal. Is reduced by one step.

  As a result, the necessary network transmission bandwidth is reduced, so that the video quality is deteriorated due to the decrease in the encoding speed, but the video is distorted due to video data loss (packet loss), freeze, sound cuts, etc. It is possible to avoid a serious quality deterioration phenomenon. For example, as disclosed in Patent Document 1, a streaming media server is proposed in which a connection speed parameter suitable for an actual communication environment can be automatically set in a streaming reception application for each client.

Various countermeasures have been proposed in addition to the countermeasures against the video quality deterioration described above. However, when access from user terminals is concentrated and congested, or in a communication environment where the network transmission band on the communication network is not sufficiently secured, the countermeasure is often not sufficient. Currently, various technological developments are in progress. In addition, in recent years, for the purpose of quality assurance of continuous media communication such as audio and video using a network, a mechanism for realizing bandwidth guarantee, delay time guarantee, etc. in the network has become available. However, if this mechanism is used to completely guarantee the bandwidth usage for all users, the network construction cost is enormous at present and the situation is not realistic.
JP 2002-94603 A

  However, as described above, in video distribution employing streaming technology, a plurality of video data (video content) held by video distribution equipment of a video distribution provider (ISP: Internet Service Provider) In a communication environment where access is concentrated or in a communication environment where the network transmission band is not sufficiently secured on the communication network, playback video distortion and freeze due to transmission delays occur, and various countermeasures have been proposed. Nevertheless, there has been a problem that it is difficult to completely eliminate the quality degradation of the distribution video. In addition, there is a problem in that it is not realistic to construct a countermeasure for quality degradation of distribution video in the entire communication network from the viewpoint of complexity of the entire system and cost increase due to technology introduction.

  In the present invention, in view of the above problems, even when a plurality of video distribution request accesses are concentrated on a video distribution facility of a video distribution company by installing a video distribution server on a communication network, An object of the present invention is to provide a data distribution server, a data distribution system, and a data distribution method capable of avoiding congestion and preventing deterioration of distribution video quality.

  The invention according to claim 1 is a data distribution provider facility owned by a data distribution provider that distributes data via the Internet, a user terminal of a user who subscribes to a data distribution service provided by the data distribution provider, A data distribution system comprising a data distribution server having storage means for storing data held by the data distribution company in a specific storage area, wherein the data distribution company equipment is connected to the data distribution server. The data distribution server transmits the data held by the data distribution company, the data distribution server duplicates the transmitted data, and stores a plurality of the same data in the storage area by the storage unit of the data distribution server. The corresponding data is selected from the stored data according to the content of the data distribution request access from the user terminal. Te, and characterized in that a data distribution system for distributing to the user terminal.

  According to the second aspect of the present invention, the data distribution server is on the Internet, and a use band necessary for data distribution is ensured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution system according to claim 1, wherein the data distribution system is installed at an installed location.

  According to a third aspect of the present invention, the data distribution server performs a duplication process on the data transmitted from the data distribution provider equipment as many as necessary based on a viewing request from a user, and stores the data in the data distribution server. The data distribution system according to claim 1 or 2, wherein the data distribution system stores the data separately in the storage area for each user by means.

  In the invention according to claim 4, the data distribution server provides a personal storage area in the storage area, and transmits data transmitted from the data distribution provider facility or data uploaded from the user for each user. The data distribution system according to any one of claims 1 to 3, wherein the data distribution system stores the data separately.

  The data distribution system according to any one of claims 1 to 4, wherein the data is data composed of at least one of video data, program data, and sound data. It is characterized by that.

  The invention according to claim 6 is a data distribution provider facility owned by a data distribution provider that distributes data via the Internet, a user terminal of a user who subscribes to a data distribution service provided by the data distribution provider, A data distribution method for a data distribution system, comprising: a data distribution server having storage means for storing data held by the data distribution company in a specific storage area, wherein the data distribution company equipment includes the data A step of transmitting data held by the data distribution company to a distribution server; and the data distribution server performs a copy process on the transmitted data, and a plurality of identical data are stored by a storage unit of the data distribution server. A step of accumulating in a storage area of the data distribution server, and the data distribution server includes data from the user terminal When receiving a communication request access, the data distribution method of the data distribution system includes a step of selecting corresponding data from the accumulated data and distributing the selected data to the user terminal. .

  According to the seventh aspect of the invention, the data distribution server is on the Internet, and a use band necessary for data distribution is ensured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution method of the data distribution system according to claim 6, wherein the data distribution method is installed at a set installation location.

  In the invention according to claim 8, the data distribution server performs a duplication process on the data transmitted from the data distribution provider facility in a necessary number based on a viewing request from a user, and stores the data in the data distribution server. The data distribution method of the data distribution system according to claim 7 or 8, wherein the data is stored separately in the storage area for each user by means.

  According to the ninth aspect of the present invention, the data distribution server provides a personal storage area in the storage area, and transmits data transmitted from the data distribution provider facility or data uploaded from the user for each user. The data distribution method of the data distribution system according to any one of claims 6 to 8, wherein the data distribution method stores the data separately.

  The data distribution system according to any one of claims 6 to 9, wherein the data is data composed of at least one of video data, program data, and sound data. The data distribution method is characterized by the above.

  The invention described in claim 11 duplicates the data transmitted from the data distribution company facilities owned by the data distribution company that distributes the data via the Internet, and stores a plurality of the same data in the storage area by the storage means. Then, according to the content of the data distribution request access from the user terminal of the user who has subscribed to the data distribution service provided by the data distribution company, the corresponding data is selected from the accumulated data, and the user A data distribution server for distributing to terminals is characterized.

  The invention according to claim 12 is a receiving means for receiving data, storage means for storing the data copied by the data distribution server in different storage areas for each piece of copied data, and data from the user terminal In response to a distribution request access, a distribution unit that selects and distributes corresponding data from the data stored in the storage unit, and a data distribution request access to the same data as the data during the data distribution In this case, the data distribution server includes distribution control means for distributing the plurality of data from a storage area different from the storage area of the data being distributed.

  The invention according to claim 13 is the data distribution server according to claim 12, characterized in that the distribution means distributes the selected data to a distribution destination designated by the user terminal.

  The invention according to claim 14 includes: a receiving unit that receives data; a storage area that is preset for each user and that can store the received data; and the data that is replicated by a data distribution server, A data distribution server comprising storage means for storing each in the storage area corresponding to the user, and distribution means for selecting and distributing the corresponding data from the storage area in response to a data distribution request access from a user terminal It is characterized by that.

  According to a fifteenth aspect of the present invention, in the data distribution according to the fourteenth aspect, the storage unit duplicates data belonging to an attribute that matches an attribute designated by a user and stores the data in the storage area corresponding to the user. It is a server.

  The invention according to claim 16 is characterized in that the attribute is the data distribution server according to claim 15 registered in advance for each user.

  The data distribution server may copy the data based on a user request when the receiving means receives the data, and the storage means corresponds to the user. The data distribution server according to claim 14, wherein the data distribution server is stored in each storage area.

  In the invention according to claim 18, the data distribution server performs a duplication process on the data transmitted from the data distribution facility equipment in a necessary number based on a viewing request from a user, and stores the data in the data distribution server. The data distribution server according to any one of claims 11 to 17, wherein the data distribution server stores the data separately in the storage area for each user by means.

  According to a nineteenth aspect of the present invention, the data distribution server is on the Internet, and a use band necessary for data distribution is ensured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution server according to any one of claims 11 to 18, wherein the data distribution server is installed at an installed location.

  In the invention according to claim 20, the data distribution server provides an area of personal storage in the storage area, and transmits data transmitted from the data distribution provider facility or data uploaded from the user for each user. 20. The data distribution server according to claim 11, wherein the data distribution server is stored separately.

  The invention according to claim 21 is the data distribution server according to any one of claims 11 to 20, wherein the data is data composed of at least one of video data, program data, and sound data. It is characterized by that.

  According to the present invention, the installation of the data distribution server on the communication network avoids congestion even when a plurality of data distribution request accesses are concentrated on the data distribution facility of the data distribution company, and the distribution data It is possible to provide a data distribution server, a data distribution system, and a data distribution method that can prevent deterioration in quality.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention is that a data distribution company equipment owned by a data distribution company that distributes data via the Internet and a user of a user who has subscribed to a data distribution service provided by the data distribution company In a data distribution system provided with a terminal and a data distribution server having storage means for storing data held by the data distribution company in a specific storage area, the data distribution company equipment The data distribution company transmits the data held by the data distribution company, the data distribution server duplicates the transmitted data, accumulates the same data in a storage area by the storage means of the data distribution server, and distributes data from the user terminal Depending on the content of the requested access, select the corresponding data from the stored data and distribute it to the user terminal Configured to the over data delivery system.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise described, the present invention is not limited to these embodiments. Also, in the following embodiments, video data that is assumed to have a particularly large data capacity is taken as an example, and a video distribution server, a video distribution system, and a video distribution method for handling these are described. The invention is not limited to video data, but is applied to a data distribution server, a data distribution system, and a data distribution method corresponding to all data handled by a computer such as program data, text data, and sound (sound) data. Is.

(Embodiment 1)
A schematic configuration of the video distribution system of the present embodiment will be described below with reference to FIG. FIG. 1 is a schematic configuration diagram of a video distribution system according to the present embodiment. As shown in FIG. 1, a plurality of user terminals 1, a video distribution provider facility 2, and a video distribution server 3 are configured. The user terminal 1 is a terminal owned by a user who desires a video distribution service and subscribes to a video distribution service provided by a video distribution company.

  The user terminal 1 is a computer, a mobile terminal, a mobile phone or the like that can use the Internet 4. The video distribution provider facility 2 is a facility owned by the video distribution provider in order to distribute various video contents to a user who desires a video distribution service. The video distribution server 3 includes a receiving unit 5, a storage unit 6, a distribution unit 7, a distribution control unit 8, and a storage area 9. The video distribution server 3 is provided on the Internet 4 and is a feature of the video distribution system of this embodiment. Component.

  Next, the contents of the video distribution in the video distribution system of the present embodiment will be described below with reference to FIGS. Here, although not shown, conventionally, when a video distribution business facility owned by a video distribution company receives a video distribution request access from a user terminal owned by a video distribution service subscriber, it uses the above-described streaming technology. In addition, video distribution has been performed directly to user terminals via the Internet. However, in this video distribution method, as described above, when receiving a video distribution request access from a plurality of user terminals at the same time, or in a communication path (communication environment) between the video distribution business facility and any user terminal, When the video data usage band is not sufficiently secured, the data processing load may become larger than the processing capability of the video distribution business facility, resulting in transmission delay of the video data.

  Therefore, in the video distribution system of the present embodiment, as shown in FIG. 1, the video distribution server 3 is installed on the Internet 4 in order to eliminate the above-described transmission delay of video data. As shown in FIG. 1, the video distribution server 3 has video data storage means 6. By this storage means 6, it is possible to store a plurality of video contents as video data in the storage area 9 of the video distribution server 3. The video distribution server 3 is installed at a location where the bandwidth of video data is sufficiently guaranteed in the communication path between the video distribution server 3 and a plurality of user terminals 1 serving as service subscribers. To do.

  Then, the video data (video content) held by the video distribution business facility 2 is transmitted to the video distribution server 3 in advance, and the video distribution server 3 duplicates the transmitted video data to obtain a plurality of the same video data. In the storage area. Then, the video delivery request access from the user terminal 1 is not received by the video delivery business facility 2 as in the conventional case, but the system is constructed so that the video delivery server 3 receives it.

  Next, more specifically, the contents of video distribution in the video distribution system of the present embodiment will be described below with reference to FIGS. FIG. 2 is a diagram showing the storage area 9 of the video distribution server in the video distribution system of the present embodiment. In the storage area 9 of the video distribution server shown in FIG. 2, the same or different video data (video contents A, B, C...) Are different by the storage means 6 of the video distribution server 3 shown in FIG. It is stored in each storage area (storage areas X, Y, Z, W...).

  First, as shown in FIG. 1, when video data (for example, video content A shown in FIG. 2) held in the video distribution business facility 2 is transmitted from the facility 2 to the video distribution server 3 in advance, the video distribution is performed. The receiving means 5 of the server 3 receives the video content A (video data). Then, the video distribution server 3 duplicates the video content A. A plurality of video contents A obtained as a result are stored in different storage areas (for example, storage areas X, Y, Z, W, etc.) in the storage area 9 shown in FIG. 2 by the storage means 6 of the video distribution server 3 shown in FIG. ...) are stored respectively.

  Subsequently, when a video distribution request access of the video content A from a specific user terminal 1 is made to the video distribution server 3, the distribution control means 8 of the video distribution server 3 is stored in the storage area 9 shown in FIG. For example, the video content A stored in the storage area X is selected. Then, the distribution unit 7 of the video distribution server 3 distributes the video content A selected by the distribution control unit 8 to the user terminal 1 described above.

  Subsequently, when a video distribution request for the video content A is accessed from another user terminal 1 (one or more) during the distribution of the video content A to the user terminal 1 described above, the video distribution server 3 distribution control means 8, video content A stored in a storage area (for example, storage areas Y, Z, W...) Different from storage area X of video content A that is already being distributed (in the case of a plurality of distributions). Are selected from different storage areas). Then, the distribution unit 7 of the video distribution server 3 distributes the video content A selected by the distribution control unit 8 to the other user terminals 1 described above.

  The system may be constructed such that the distribution destination of the video content A distributed by the distribution means 7 is distributed to a specified distribution destination in advance by designation from the user terminal 1. In this case, for example, when the user makes a video distribution request access to the video content A from the user terminal 1 at home, the user can go out of the office by specifying the distribution destination of the video content A as the portable terminal owned by the user. Thus, since the video content A can be viewed using the mobile terminal, the convenience of the system is improved.

  As described above, in the present video distribution system, a plurality of the same video data is stored in advance in the video distribution server 3, so that the video distribution request access of the same video data is concentrated from the plurality of user terminals 1. Even in this case, it is not necessary to execute the video data duplication process, and the distribution load of the video data can be reduced. Further, as described above, the communication path from the video distribution server 3 to the user terminal 1 has a sufficiently guaranteed bandwidth for using video data.

  Therefore, the distribution of the video data from the video distribution server 3 to the user terminal 1 can be executed without causing deterioration of the video quality. Therefore, according to the video distribution system of the present embodiment, even when the amount of data processing increases due to the concentration of a large number of video distribution request accesses, the transmission delay of the video data is prevented and the deterioration of the video quality is avoided. The effect that it becomes possible can be acquired.

(Embodiment 2)
The video distribution system of this embodiment is an application example of the first embodiment. Hereinafter, the present embodiment will be described with reference to FIGS. 3 and 4, but description of parts common to the first embodiment will be omitted. As shown in FIG. 3, the present video distribution system is stored in the storage area 6 of the video distribution server 3 in that a plurality of video distribution servers 3 are installed on the Internet 4 as compared with the first embodiment. Different video data is stored for each user.

  In the video distribution system of the present embodiment, an appropriate number of video distribution servers 3 are installed corresponding to the number of subscribers. This is because the data processing capability of the video distribution server 3 is taken into consideration to limit the number of users handled by one video distribution server 3. When the number of subscribers of this system increases or decreases, the number of installed video distribution servers 3 is appropriately adjusted according to the increase or decrease of the number of users. This restricts the concentration of video distribution request access due to an increase in the number of users, prevents transmission delay in video distribution to the user terminal 1 of the video distribution server 3, and avoids deterioration of video quality.

    As shown in FIG. 4, in the storage area 9 of the video distribution server 3, video data (video content) to be distributed is stored in advance for each user. For example, the user has previously received a notification of the title list information of the video distribution content held by the system from the video distribution company by e-mail or the like, and selects and selects the video content that is a candidate for viewing from among these The title information of the video content is returned to the video distributor by e-mail or the like.

  Then, the video distribution company can store the video content (video data) for each user in the storage area 9 of the video distribution server 3 based on the title information of the video content desired by the user. 3 can ensure only appropriate video content corresponding to the user's viewing request. Therefore, it is possible to eliminate waste of occupying the storage area 9 of the video distribution server 3 with video content that does not correspond to the user's viewing request. Further, the storage area of the storage area 9 of the video distribution server 3 can be secured for each user, and the storage area secured for each user can be used as a user's post office box.

  Furthermore, the user operates the user terminal 1 to specify attributes such as sports, music, entertainment, etc. that he / she wishes to view, and transmits this to the video distributor by e-mail or the like. Is also possible. In such a case, the video distribution server 3 stores the video data (video content) corresponding to the attributes such as the category designated by each user in the storage area 9 so that the video distribution server 3 The video distribution server 3 can be instructed.

  As described above, the storage area 9 of the video distribution server 3 is secured for each user and used as a user's post office box. The effect that the video data can be smoothly distributed without time can be obtained.

(Embodiment 3)
The video distribution system of this embodiment is an application example of the second embodiment. The video distribution system according to the present embodiment will be described below with reference to FIG. 5, but the description common to the second embodiment will be omitted. As shown in FIG. 5, the video distribution system according to the present embodiment is characterized in that a personal storage 10 is provided in the storage area 9 of the video distribution server 3 in addition to the second embodiment. In the storage area of the personal storage 10, video content supplied from the video distribution system and stored in the information distribution server 3 or video content uploaded from the subscriber's user terminal 1 (videos owned by the system). Video data such as, but not limited to content) can be stored for each user.

  According to the present embodiment, a user who is a system subscriber can store video data other than video content supplied by a video distribution company in the personal storage 10, and a storage location for personal video data. It can be used as a so-called personal picture box. The video data stored in the personal storage 10 can be viewed at any time in response to a video distribution access request from the user.

In the video distribution systems of the first to third embodiments described above, a specific system operation as a business model will be supplementarily described below.
First, the user is subscribed to the system by transmitting a system registration request from the terminal of a user who desires to provide the system service to the video distribution business facility 2 of the video distribution company. . The video distribution provider facility 2 on the video distribution provider side executes a system subscription procedure for the system use applicant based on the system registration request transmitted to the video distribution provider facility 2 and the user registration information transmitted simultaneously.

  When the video distribution provider facility 2 completes the user registration procedure, it sends a registration procedure completion notification and a user ID used for user authentication required for system use to the user terminal 1. Can do. Thereafter, the user can view the video data and use the personal storage 10 on the assumption that user authentication is performed using a user ID or the like when using the system.

  In this system, it is also possible to monitor download so that the user is prohibited from downloading video data for free. In addition, as a system configuration, setting of a storage period of video data in the video distribution server 3, regular updating of video contents after the end of the storage period of video data, and notification of update information using an e-mail to a user terminal, etc. be able to.

  In addition, when using the system, the video distribution company can adopt an appropriate accounting method for the user. A basic monthly fee, personal storage usage fee, etc. can be set, and a fee system according to the number of times video data is used can be adopted. In addition, if there is a desire to download video data, the user can be given permission to download video data and collect an additional fee, or an additional fee will be required for the expansion of the storage capacity of the personal storage 10 You can also

It is a schematic block diagram of the video delivery system in 1st Embodiment. It is the figure which showed the storage area of the video delivery server of the video delivery system in 1st Embodiment. It is a schematic block diagram of the video delivery system in 2nd Embodiment. It is the figure which showed the memory area of the video delivery server in the video delivery system of 2nd Embodiment. It is a figure for demonstrating the characteristic of the video delivery server in the video delivery system of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 User terminal 2 Video distribution business equipment 3 Video distribution server 4 Internet 5 Receiving means 6 Storage means 7 Distribution means 8 Distribution control means 9 Storage area 10 Personal storage

Claims (21)

Data distribution company facilities owned by data distribution companies that distribute data via the Internet,
A user terminal of a user who has subscribed to a data distribution service provided by the data distribution company;
A data distribution system comprising a data distribution server having storage means for storing data held by the data distribution company in a specific storage area,
The data distribution provider equipment transmits data held by the data distribution provider to the data distribution server, the data distribution server performs a copy process on the transmitted data, and a plurality of the same data, The data is stored in the storage area by the storage means of the data distribution server, and the corresponding data is selected from the stored data according to the content of the data distribution request access from the user terminal and distributed to the user terminal. A data distribution system characterized by:   The data distribution server is installed on the Internet at an installation location where a use band necessary for data distribution is secured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution system according to claim 1.   The data distribution server duplicates the data transmitted from the data distribution provider equipment as many as necessary based on the viewing request from the user, and the storage unit of the data distribution server stores the data in the storage area. The data distribution system according to claim 1 or 2, wherein the data distribution system stores the data separately for each time.   The data distribution server is characterized in that a personal storage area is provided in the storage area, and data transmitted from the data distribution provider facility or data uploaded from a user is sorted and stored for each user. The data distribution system according to any one of claims 1 to 3.   5. The data distribution system according to claim 1, wherein the data is data including at least one of video data, program data, and sound data. 6. Data distribution company facilities owned by data distribution companies that distribute data via the Internet,
A user terminal of a user who has subscribed to a data distribution service provided by the data distribution company;
A data distribution method for a data distribution system comprising a data distribution server having a storage means for storing data held by the data distribution company in a specific storage area,
The data distribution provider equipment transmitting the data held by the data distribution provider to the data distribution server;
A step of replicating the transmitted data and storing a plurality of identical data in a storage area of the data distribution server by storage means of the data distribution server;
The data distribution server, when receiving a data distribution request access from the user terminal, selecting the corresponding data from the accumulated data and distributing the selected data to the user terminal. A data distribution method for a data distribution system.   The data distribution server is installed on the Internet at an installation location where a use band necessary for data distribution is secured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution method of the data distribution system according to claim 6.   The data distribution server duplicates the data transmitted from the data distribution provider equipment as many as necessary based on the viewing request from the user, and the storage unit of the data distribution server stores the data in the storage area. The data distribution method of the data distribution system according to claim 7 or 8, wherein the data distribution is performed separately for each data storage.   The data distribution server is characterized in that a personal storage area is provided in the storage area, and data transmitted from the data distribution provider facility or data uploaded from a user is sorted and stored for each user. The data distribution method of the data distribution system according to any one of claims 6 to 8.   10. The data distribution system according to claim 6, wherein the data is data including at least one of video data, program data, and sound data. Method.   The data transmitted from the data distribution company equipment owned by the data distribution company that distributes the data via the Internet is replicated, a plurality of the same data is accumulated in the storage area by the storage means, and the data distribution company's According to the contents of the data distribution request access from the user terminal of the user who subscribes to the data distribution service to be provided, the corresponding data is selected from the accumulated data and distributed to the user terminal. Data distribution server. Receiving means for receiving data;
Storage means for storing the data replicated by the data distribution server in different storage areas for each replicated data;
A delivery means for selecting and delivering corresponding data from the data stored in the storage means in response to a data delivery request access from a user terminal;
Distribution control means for distributing the plurality of data from a storage area different from the storage area of the data being distributed when a data distribution request access is made to the same data as the data during the distribution of the data; A data distribution server comprising:   The data distribution server according to claim 12, wherein the distribution unit distributes the selected data to a distribution destination designated by the user terminal. Receiving means for receiving data;
A storage area that is preset for each user and capable of storing the received data;
Storage means for storing the data copied by the data distribution server in the storage area corresponding to each user;
A data distribution server comprising: distribution means for selecting and distributing corresponding data from the storage area in response to a data distribution request access from a user terminal.   The data distribution server according to claim 14, wherein the storage unit duplicates data belonging to an attribute that matches an attribute specified by a user and stores the data in the storage area corresponding to the user.   The data distribution server according to claim 15, wherein the attribute is registered in advance for each user. The data distribution server, on the occasion that the receiving means receives the data, duplicates the data based on a user request,
15. The data distribution server according to claim 14, wherein the storage unit stores each in the storage area corresponding to the user.   The data distribution server duplicates the data transmitted from the data distribution provider equipment as many as necessary based on the viewing request from the user, and the storage unit of the data distribution server stores the data in the storage area. The data distribution server according to any one of claims 11 to 17, wherein the data distribution server is sorted and stored every time.   The data distribution server is installed on the Internet at an installation location where a use band necessary for data distribution is secured in a communication path (communication environment) between the user terminal and the data distribution server. The data distribution server according to claim 11, wherein the data distribution server is a data distribution server.   The data distribution server is characterized in that a personal storage area is provided in the storage area, and data transmitted from the data distribution provider facility or data uploaded from a user is sorted and stored for each user. The data distribution server according to any one of claims 11 to 19.   The data distribution server according to any one of claims 11 to 20, wherein the data is data including at least one of video data, program data, and sound data.

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