JP4480362B2 - Server apparatus and program - Google Patents

Description

  The present invention relates to technology for preventing unauthorized exchange and unauthorized copying of content.

  With the modernization of network technology, it has become possible to distribute not only text data but also high-quality video and still image data. However, along with the availability of such rich media, unauthorized exchange and unauthorized copying of copyrighted content such as movies and music by users has become popular. Therefore, several DRMs (Digital Right Management), that is, copy prevention means have been announced as methods for dealing with such illegal copying. For example, there are known means for encrypting content before or at the time of distribution and using a decryption key with a business rule at the time of reproduction to enable conditional viewing or to prevent leakage due to unauthorized copying. There is also known a means for disabling a keyboard for a screen shot in order to disable a screen shot function provided as a standard in a personal computer (hereinafter referred to as “PC”) (for example, Patent Document 1). reference). Furthermore, there is also known a technique for monitoring an application running on a user terminal, stopping display of content when an unauthorized copy software is activated, and forcibly terminating the unauthorized copy tool (for example, patents). (Ref. 2 and 3).

  However, in the conventional copy prevention means, one copy prevention means is associated with one content, and the content and the copy prevention means always have a one-to-one relationship. For this reason, when it is assumed that predetermined copy prevention means is executed for all of a plurality of contents, the copy prevention means must be associated with each content, which is not efficient. In addition, there are a variety of methods for illegally exchanging and copying content by users, and it is no longer possible to use one type of copy prevention means, so multiple types of copy prevention means are associated with one content. Therefore, there is an increasing need to improve security strength.

JP 2001-75696 A

JP 2001-222405 A JP 2001-325154 A

  The present invention has been made in view of the above points, and by associating a plurality of copy prevention means in a hierarchy with a plurality of contents, the copy prevention means corresponding to each content can be made to function synergistically. It is an object to provide a copy prevention system.

In one aspect of the present invention, a server device capable of transmitting / receiving data to / from a terminal device via a network is determined based on a user input to the terminal device, and is information related to a page including one or more contents. Content that is acquired based on page information acquisition means for acquiring certain page information from the terminal device, and content request information for requesting content included in the page, determined from user input to the terminal device. Request information acquisition means, a basic prevention program that is executed on the terminal device and prevents unauthorized use of content, and is a prevention program associated with the page, and each content included in the page Prevention program storage for storing prevention programs associated with In addition, the basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and the prevention program corresponding to the content indicated by the content request information is acquired. Transmitting means for transmitting to the terminal device.

The server device configured as described above stores in advance a prevention program that is executed when a page is displayed on the terminal device. Here, the prevention program is a program for preventing unauthorized exchange and unauthorized copying of content by the user. Specifically, the server device stores a basic prevention program, which is a prevention program associated with a page, and a prevention program associated with each content included in the page. When the server device acquires the page information from the terminal device, the server device acquires a basic prevention program corresponding to the page indicated by the page information and transmits it to the terminal device. Further, when the server device acquires content request information for requesting the content included in the page from the terminal device, the server device acquires a prevention program corresponding to the content indicated by the content request information and transmits it to the terminal device. This basic prevention program is stored in the terminal device, and is executed when the user displays a page on the terminal device. According to this, even if the page contains copyrighted content, the basic prevention program is always executed when the user displays the page on the terminal device. And unauthorized copying can be prevented. Further, when content included in a page is requested, a prevention program corresponding to the content is also executed. In this way, the prevention program that is always executed when displaying a page regardless of the content is set at the lowest layer, and the prevention program that is executed when reproducing the content constituting the page is set at the upper layer, that is, In addition, by layering the prevention programs and associating them with the contents, the prevention programs corresponding to the respective contents can be efficiently set and function effectively and synergistically.

In one aspect of the server device, the page includes the one or more contents and a reproduction display area that is an area other than an area in which the content is displayed. The basic prevention program is stored in association with the reproduction display area.

In another aspect of the server device, the prevention program storage unit stores a plurality of prevention programs for specific content, and the transmission unit stores the plurality of prevention programs for the specific content. Send. According to this, it is possible to easily set a plurality of prevention programs for one content or add another prevention program later.

In another aspect of the server device described above, priorities are set for the plurality of prevention programs for the specific content, and the transmission unit includes the priorities for the specific content including the priorities. Send prevention program. According to this, even when a plurality of prevention programs are set for one content, and the plurality of prevention programs are in a competitive relationship, the terminal apparatus can appropriately A prevention program can be executed. Note that the competitive relationship refers to a relationship in which when one of the prevention programs is executed, another type of prevention program cannot be executed successfully.

In another aspect of the present invention, a server device capable of transmitting / receiving data to / from a terminal device via a network is determined on the basis of a user input to the terminal device, and is information related to a page including one or more contents. Page information acquisition means for acquiring certain page information from the terminal device, content specifying means for specifying content included in the page based on the page information, and unauthorized use of content executed on the terminal device As a prevention program for preventing, a prevention program storage means for storing a basic prevention program that is a prevention program associated with the page, and a prevention program associated with each content included in the page, The basic corresponding to the page indicated by the page information from the prevention program storage means And transmits to obtain the stop program to the terminal device, characterized in that it comprises a transmitting means for transmitting to the terminal device acquires and prevention program corresponding to the content the content identification means has identified.

The server device configured as described above stores in advance a prevention program that is executed when a page is displayed on the terminal device. Here, the prevention program is a program for preventing unauthorized exchange and unauthorized copying of content by the user. Specifically, the server apparatus stores a basic prevention program that is a prevention program associated with the page, and a prevention program associated with each content included in the page. When the server device acquires the page information from the terminal device, the server device acquires a basic prevention program corresponding to the page indicated by the page information. In addition, the server device specifies content included in the page indicated by the page information, and acquires a prevention program corresponding to the content. Then, the server device transmits the acquired basic prevention program and prevention program to the terminal device. The basic prevention program and the prevention program are stored in the terminal device and executed when the user displays a page on the terminal device. According to this, even if the page contains copyrighted content, the basic prevention program is always executed when the user displays the page on the terminal device. And unauthorized copying can be prevented. In addition, the terminal device does not need to transmit a request for the content to the server device each time the content is reproduced to display the web page. Therefore, the number of accesses to the server device by the terminal device can be greatly reduced, and the load on the server device can be reduced.

In another aspect of the present invention, a program executed by a server device including a computer and capable of transmitting / receiving data to / from a terminal device via a network is determined based on a user input to the terminal device, and is Page information acquisition means for acquiring page information, which is information related to a page including a plurality of contents, from the terminal device, and content request information for requesting the content included in the page, determined based on a user input to the terminal device Content request information acquisition means for acquiring from the terminal device, as a prevention program for preventing unauthorized use of content executed on the terminal device, a basic prevention program that is a prevention program associated with the page, and Protection associated with each content included in the page A preventive program storage means for storing a program, a basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and also corresponds to the content indicated by the content request information The computer is caused to function as transmission means for acquiring a prevention program to be transmitted and transmitting it to the terminal device.

In another aspect of the present invention, a program executed by a server device including a computer and capable of transmitting / receiving data to / from a terminal device via a network is determined based on a user input to the terminal device, and On the terminal device, page information acquisition means for acquiring page information, which is information relating to a page including a plurality of contents, from the terminal device, content specifying means for specifying content included in the page based on the page information, As a prevention program for executing unauthorized use of content, a basic prevention program that is a prevention program associated with the page and a prevention program associated with each content included in the page are stored. From the prevention program storage means, the prevention program storage means, A transmission unit that acquires a basic prevention program corresponding to the page indicated by the page information and transmits the basic prevention program to the terminal device, and acquires a prevention program corresponding to the content specified by the content specifying unit and transmits the prevention program to the terminal device; The computer is operated as follows.

  By executing the above program by a computer, the above-described server device can be realized. Moreover, each aspect of the above-mentioned server apparatus is realizable similarly.

  According to the present invention, a plurality of copy prevention means are associated with a plurality of contents in a hierarchy, whereby the copy prevention means corresponding to each content can function effectively and synergistically.

  Preferred embodiments of the present invention will be described below with reference to the drawings. The present invention effectively executes a copy protection program corresponding to each content by associating a hierarchical copy protection program with a plurality of contents constituting a web page that can be displayed on a terminal device. It is possible.

[Copy protection system]
First, a copy prevention system according to the present invention will be described. FIG. 1 shows a schematic configuration of a copy prevention system. When the user displays a predetermined web page on the terminal device, the copy prevention system shown in FIG. 1 executes a copy prevention program associated with a plurality of contents constituting the page, so that the content by the user Prevent unauthorized exchange and unauthorized copying.

  As shown in FIG. 1, the copy protection system 100 is configured by connecting a user terminal device 21, a web server 22, and a content server 23 through a network 20. One preferred example of network 20 is the Internet.

  First, an outline of a content copy prevention method using this system will be described. In order to display a predetermined web page on the terminal device 21, the user transmits information regarding the page to the web server 22. The web server 22 acquires information on a plurality of contents constituting the page as page configuration information based on the received information. Further, the web server 22 obtains the most basic copy prevention program (hereinafter referred to as “prevention program”) associated with the content constituting the page, and the terminal device together with the page configuration information. To 21. Although details will be described later, it is assumed that the prevention program has a hierarchical structure, and the most basic prevention program is set at the lowest layer. The terminal device 21 stores the received basic prevention program in a memory and makes it resident at the back end. Further, the terminal device 21 designates content to be displayed based on the page configuration information, and requests the web server 22 for the content. The web server 22 transmits to the terminal device 21 a prevention program associated with the requested content and content information that is information related to the content server 23 necessary for acquiring the content. The terminal device 21 stores the received prevention program in a memory, and acquires the corresponding content from the content server 23 based on the content information. When the terminal device 21 reproduces the content, the prevention program associated with the content stored in the memory and the basic prevention program resident in the back end are executed, thereby preventing the content. The system 100 can prevent unauthorized exchange and unauthorized copying of content by a user.

  Next, each element will be described individually. First, the web page will be described. The web page is composed of a plurality of contents such as moving images, still images, and 3DCG, and can be displayed on the screen of the terminal device 21. Here, the prevention program is hierarchically associated with the contents constituting the web page. FIG. 2A shows a conceptual diagram of the layered prevention program associated with the contents constituting the web page. As shown in FIG. 2A, the web page includes a playback display area 50 and a plurality of contents 51 to 53 as constituent elements. In this example, the content 51 is a still image, the content 52 is a moving image, and the content 53 is 3DCG. In addition, the entire area that is reproduced to display the page on the terminal device 21 including a part other than the content such as text on the web page is referred to as a reproduction display area 50. Then, hierarchical prevention programs 54 to 57 are associated with the reproduction display area 50 and the contents 51 to 53.

  Specifically, the entire reproduction display area 50 is associated with the prevention program A54, the still picture content 51 is associated with the prevention program C55, the moving picture content 52 is associated with the prevention program D56, and the 3DCG content 53 is associated with the prevention program E57. That is, in the terminal device 21, for example, the prevention program A54 is always executed when the reproduction display area 50 is reproduced, and the prevention program C55 is always executed when the still image content 51 is reproduced.

  Here, the prevention program relative table is shown in FIG. The prevention program relative table represents an area in which a vertical item is played back to display a web page, and a horizontal item is a prevention program executed at the time of playback. For example, when only the reproduction display area is reproduced without reproducing the contents 51 to 53, specifically, when only the text is displayed without displaying the image on the web page, only the prevention program A54 is executed. When the still image content 51 is reproduced, the prevention program A54 and the prevention program C55 are executed. Further, when reproducing the moving image content 52, the prevention program A54 and the prevention program D56 are executed. Further, when the 3DCG content 53 is reproduced, the prevention program A54 and the prevention program E57 are executed.

  In this way, the prevention programs A set in the lowermost layer are executed regardless of whether the contents 51 to 53 are reproduced by hierarchically associating the prevention programs. That is, even when a plurality of contents are reproduced and a predetermined web page is displayed, it is possible to efficiently set the plurality of contents by associating a hierarchical prevention program. In addition, an optimal prevention program can be set for each content. Therefore, the prevention program can be executed synergistically and effectively.

  The prevention program according to the present invention is, for example, a screen shot function (a function for saving an image displayed on the display as an image file or copying it to the clipboard) while a page is displayed on the terminal device 21. Such as a program that invalidates the content, a program that encrypts content data between the server and the client, and the like. In addition, as the prevention program, any program that realizes automatic watermarking, monitoring a copy tool, preventing data copying to a memory, and the like can be applied to the present invention.

  Next, the web server 22 will be described in detail. FIG. 4 shows an internal configuration of the web server 22 in the copy protection system 100 of the present invention. The web server 22 is connected to a page configuration database (hereinafter referred to as “DB”) 27 and a prevention program DB 28. As illustrated in FIG. 4, the web server 22 includes an information reception function 221, a page configuration information extraction function 222, a prevention program extraction function 223, and an information transmission function 224.

  The information receiving function 221 is a function of receiving information related to a web page and information related to a content request from the terminal device 21. The page configuration information extraction function 222 is a function that extracts information on the content that constitutes the page from the page configuration DB 27 based on the information about the web page received by the information reception function 221. The prevention program extraction function 223 is a function for extracting a corresponding prevention program from the prevention program DB 28 based on information on contents constituting the web page. The information transmission function 224 transmits to the terminal device 21 the page configuration information acquired by the page configuration information extraction function 222, the prevention program extracted by the prevention program extraction function, and the content information related to the content server 23 necessary for acquiring the content. It is a function to do.

  First, the page configuration DB 27 will be described. FIG. 5A is a diagram schematically showing the data structure of the page configuration DB 27. As shown in FIG. 5A, the page configuration DB 27 stores the type of content that constitutes a page and the content ID using the page ID as a key. The information reception function 221 of the web server 22 receives a page ID that is identification information of a web page that the user wants to display as page information from the terminal device 21. Then, the page configuration information extraction function 222 extracts the type of content constituting the page from the page configuration DB 27 based on the received page ID, and sets it as page configuration information. Further, the information transmission function 224 transmits page configuration information to the terminal device 21. The information reception function 221 of the web server 22 receives a content request selected by the user based on the page configuration information. Then, the page configuration information extraction function 222 extracts a content ID, which is content identification information selected by the user based on the content request, from the page configuration DB 27 and transmits the content ID to the terminal device 21 as content information.

  Next, the prevention program DB 28 will be described. FIG. 6 is a diagram schematically showing the data structure of the prevention program DB 28. Note that the item 60 surrounded by a broken line is omitted for convenience in order to be described in a first modification described later. As illustrated in FIG. 6, the prevention program DB 28 stores a range of the effect of the prevention program and the prevention program in association with each other. Specifically, the prevention program extraction function 223 of the web server 22 is set at the lowest layer as a hierarchical prevention program based on the information of the contents constituting the web page, as will be described in detail later. The prevention program A which is the “reproduction display area” is extracted as a basic prevention program. Further, the prevention program extraction function 223 extracts the prevention program D whose effective range is “still image only” when the content requested by the user is only a still image based on the page configuration information, for example. . On the other hand, when the content requested by the user based on the page configuration information is, for example, a still image and 3DCG, the prevention program extraction function 223 includes a prevention program D whose effect range is “still image only”, and an effect Both of the prevention programs E whose range is only “3DCG” are extracted.

  Next, the content server 23 will be described. The content server 23 is connected to the content DB 29 as shown in FIG. FIG. 7 is a diagram schematically showing the data configuration of the content DB 29. As shown in FIG. 7, the content DB 29 stores data of content itself in association with a content ID that is content identification information. When the content server 23 receives the content information from the terminal device 21, the content server 23 extracts the corresponding content from the content DB 29 based on the content ID included in the content information. Then, the content server 23 transmits the extracted content to the terminal device 21.

[Copy prevention processing]
Next, a copy prevention process executed by the copy prevention system 100 will be described. FIG. 8 is a flowchart of the copy prevention process.

  First, the user transmits the page ID of a web page to be displayed on the terminal device 21 to the web server 22 as page information (step S1). The web server 22 that has received the page information extracts content information constituting the web page from the page configuration DB 27 based on the page ID included in the page information, and sets it as page configuration information (step S2). Further, the web server 22 extracts from the prevention program DB 28 the lowest prevention program, that is, the most basic prevention program in the hierarchical prevention program as a basic prevention program (step S3). Specifically, the web server 22 extracts the prevention program A whose effect range is the “reproduction display area” from the prevention program DB 28 shown in FIG. This is because the prevention program A is always executed even when any of the contents constituting the web page is reproduced, and is the prevention program located at the lowest layer in the hierarchical prevention program. Then, the web server 22 transmits the page configuration information extracted in step S2 and the basic prevention program extracted in step S3 to the terminal device 21 (step S4).

  The terminal device 21 that has received the page configuration information and the basic prevention program first stores the basic prevention program in the memory and makes it resident in the back end (step S5). Then, the terminal device 21 selects content to be reproduced based on the page configuration information, and requests the content from the web server 22 (step S6). At this time, the terminal device 21 transmits information such as “still image only” or “still image and 3DCG” to the web server 22 as a content request. The web server 22 extracts a corresponding prevention program from the prevention program DB 28 based on the received content request (step S7). Specifically, when the web server 22 receives information “still image only” as a content request from the terminal device 21, the prevention range of the effect is “still image only” from the prevention program DB 28 shown in FIG. 6. Program D is extracted. Further, the web server 22 extracts the content ID of the content that the user wants to reproduce from the page configuration DB 27 based on the page information and the content request received from the terminal device 21, and sets it as the content information. Then, the web server 22 transmits the prevention program extracted in step S7 and the content information to the terminal device 21 (step S8).

  The terminal device 21 that has received the prevention program and the content information stores the prevention program in the memory and transmits the content information to the content server 23 (step S9). The content server 23 extracts the corresponding content data from the content DB 29 based on the content ID included in the received content information, and transmits it to the terminal device 21 (step S10). The terminal device 21 reproduces the received content. At this time, since the prevention program associated with the content is stored in the memory in step S9, the prevention program is executed with the reproduction of the content (step S11). Since the basic prevention program is stored in the memory in step S5 and is resident at the back end, the basic prevention program is also executed as the content is played back. According to this, since both the basic prevention program and the prevention program associated with the content are executed when the content is played back, it is possible to realize strong security corresponding to unauthorized exchange and unauthorized copying by the user. it can.

  In the above embodiment, for example, when the content request is “still image and 3DCG”, the prevention program D and the prevention program E are stored in the memory of the terminal device 21 in step S9. When still image content and 3DCG content are reproduced in step S11, prevention program A and prevention program D are executed for still image content, and prevention program A and prevention program E are executed for 3DCG content. Is done. If a plurality of copy prevention programs are associated with a plurality of contents in a hierarchical manner as in the present invention, a copy prevention program corresponding to each content can be set efficiently and function effectively and synergistically.

  In the above embodiment, as shown in FIG. 8, the web server 22 transmits the prevention program to the terminal device 21 each time based on the content request. However, the present invention is not limited to this, and the web server 22 refers to the page configuration DB 27 and the prevention program DB 28 when the user receives the page information of the web page that the user wants to display on the terminal device 21. All the prevention programs associated with the contents constituting the page may be transmitted to the terminal device 21. At this time, the web server 22 needs to transmit to the terminal device 21 information as to which prevention program should be executed when reproducing which content. According to this, the terminal device 21 does not need to transmit a content request to the web server 22 each time the content is reproduced in order to display the web page. This is because all the prevention programs associated with the content to be reproduced for displaying the page can be stored in the memory in advance. Therefore, the number of accesses to the web server 22 by the terminal device 21 can be greatly reduced, and the load on the web server 22 can be reduced.

  In the above embodiment, as shown in FIG. 8, the page configuration information and the content information are transmitted from the web server 22 to the terminal device 21 at different timings, but the present invention is not limited to this. Alternatively, the content ID may be extracted from the page configuration DB 27 together with the content constituting the page in step S2 and transmitted to the terminal device 21 collectively as page configuration information. Also in this case, before acquiring the content from the content server 23, the terminal device 21 needs to receive the prevention program corresponding to the content from the web server 22 and store it in the memory.

  In the above embodiment, as shown in FIG. 6, the prevention program DB 28 stores the prevention program in association with each range where the effect of the prevention program reaches. In other words, except for the playback display area, the prevention program is stored in association with each type of content such as a moving image or a still image. However, the present invention is not limited to this, and even for the same moving image, for example, different prevention programs are stored in association with each other in the 3DCG content with the page ID “P01” and the 3DCG content with the page ID “P02”. Is also possible. That is, when the prevention program is stored in the prevention program DB 28, not only based on information for identifying the type of content such as a moving image or a still image, but also based on identification information of the content itself such as which content constituting which page It is also possible to apply a method of storing the information.

  In the above embodiment, as shown in FIG. 8, the terminal device 21 transmits the page ID of the web page to be displayed to the web server 22 and receives the page configuration information from the web server 22. However, the present invention is not limited to this, and the information on the content constituting the web page may be described in advance in HTML (Hyper Text Markup Language). According to this, since the web server 22 can recognize the page configuration of the web page to be displayed on the terminal device 21 by analyzing the HTML, it is necessary to have the page configuration DB 27 shown in FIG. Absent.

  In the above embodiment, as shown in FIG. 1, the web server 22 and the content server 23 are separate servers. However, the present invention is not limited to this, and even a single server may be used. I do not care.

[First modification]
In the above embodiment, one prevention program is associated with each content as shown in FIG. 2 (a), but the present invention is not limited to this, as shown in FIG. 2 (b). There may be a plurality of prevention programs associated with each content. For example, in FIG. 2B, the moving image content 52 is associated with two types of prevention programs such as a prevention program B58 and a prevention program C56. The prevention program B58 and the prevention program C56 may be executed step by step as a hierarchical type as shown in FIG. 2B, or both are always executed when moving image content is played back. Also good. That is, it can be set arbitrarily. Specifically, the prevention program B58 is a program that encrypts content data and checks the execution status of a tool that performs unauthorized copying, and the prevention program C56 monitors the reproduction conditions such as the reproduction date and time, the number of times, and the like. In other words, the program can be reproduced only when the reproduction condition is satisfied. According to this, it is possible to easily set a plurality of prevention programs for one content or add another prevention program later.

  Furthermore, when a plurality of prevention programs are set for one content as in the first modification and the plurality of prevention programs are in a competitive relationship, the prevention program DB 28 shown in FIG. It is also possible to set the priority order in. Here, the competitive relationship means a relationship in which when one of the prevention programs is executed, another type of prevention program cannot be executed successfully. Specifically, in FIG. 6, the prevention program B and the prevention program C, both of which the effect range of the prevention program is “moving image only”, are assigned the priority “1” for the prevention program B in the item 60 surrounded by a broken line. ”And the priority“ 2 ”is set in the prevention program C. According to this, when the moving image content 52 is reproduced, only the prevention program B is executed in accordance with the priority order even when two types of prevention programs B and C that compete with the content are associated with each other. Can be made.

[Second modification]
In the above embodiment, for convenience of explanation, only one content DB 29 is included in the copy prevention system 100. Therefore, the terminal device 21 can acquire the corresponding content from the content DB 29 based on the content ID included in each page acquired by referring to the page configuration DB 27 as illustrated in FIG. it can. However, the present invention is not limited to this, and there is a case where there are a plurality of content DBs 29 constituting the copy prevention system 100, and a page is configured by a combination of contents stored in the plurality of content DBs 29. Even can be applied.

  FIG. 5B is a diagram schematically showing the data structure of the page configuration DB 27 used in this case. As shown in FIG. 5B, the page configuration DB 27 stores the type of content constituting the page and the path to the content using the page ID as a key. In the second modification, the information receiving function 221 of the web server 22 shown in FIG. 4 receives the page ID of the web page that the user wants to display as page information from the terminal device 21. Then, the page configuration information extraction function 222 extracts the type of content constituting the page from the page configuration DB 27 as shown in FIG. 5B based on the received page ID, and sets it as page configuration information. Further, the information transmission function 224 transmits page configuration information to the terminal device 21. The information reception function 221 of the web server 22 receives a content request selected by the user based on the page configuration information. Then, the page configuration information extraction function 222 extracts the path to the content selected by the user based on the content request from the page configuration DB 27 as shown in FIG. 5B, and transmits the content information to the terminal device 21.

  According to this, since the terminal device 21 receives the path to the content as the content information, even if the web page that the user wants to display is configured by a combination of content stored in the plurality of content DBs 29. In accordance with the path information, appropriate content can be easily acquired from the corresponding content DB 29.

  With this copy prevention system, it is possible to easily prevent unauthorized exchange and unauthorized copying of users with copyrighted content.

It is a figure which shows schematic structure of the copy prevention system by this invention. It is a figure which shows the conceptual diagram of a hierarchical copy prevention program. The prevention program relative table | surface in this invention is shown. FIG. 2 is a functional block diagram of a web server included in the copy prevention system shown in FIG. 1. It is a figure which shows typically the data structure of page structure DB in this invention. It is a figure which shows typically the data structure of prevention program DB in this invention. It is a figure which shows typically the data structure of content DB in this invention. It is a figure which shows the flowchart of a copy prevention process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 ... Network 21 ... Terminal device 22 ... Web server 23 ... Content server 27 ... Page structure DB
28 ... Prevention program DB
29 ... Content DB
100 ... copy protection system

Claims (10)

A server device capable of transmitting / receiving data to / from a terminal device via a network,
Page information acquisition means for acquiring, from the terminal device, page information which is determined based on a user input to the terminal device and which is information regarding a page including one or more contents;
Content request information acquisition means that acquires content request information that is determined based on user input to the terminal device and requests content included in the page from the terminal device;
As a prevention program for preventing unauthorized use of content executed on the terminal device, a basic prevention program, which is a prevention program associated with the page, and prevention associated with each content included in the page Prevention program storage means for storing the program,
A basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and a prevention program corresponding to the content indicated by the content request information is acquired and the terminal device. And a transmission means for transmitting to the server. The page includes the one or more contents and a reproduction display area that is an area other than an area in which the content is displayed.
The server apparatus according to claim 1, wherein the prevention program storage unit stores the basic prevention program in association with the reproduction display area. The prevention program storage means stores a plurality of prevention programs for specific content,
The server device according to claim 1, wherein the transmission unit transmits the plurality of prevention programs for the specific content. Priorities are set for a plurality of prevention programs for the specific content,
The server device according to claim 3, wherein the transmission unit transmits the plurality of prevention programs including the priority order for the specific content. A server device capable of transmitting / receiving data to / from a terminal device via a network,
Page information acquisition means for acquiring, from the terminal device, page information which is determined based on a user input to the terminal device and which is information relating to a page including one or more contents;
Content specifying means for specifying the content included in the page based on the page information;
As a prevention program for preventing unauthorized use of content executed on the terminal device, a basic prevention program, which is a prevention program associated with the page, and prevention associated with each content included in the page Prevention program storage means for storing the program,
A basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and a prevention program corresponding to the content specified by the content specifying means is acquired and the terminal A server device comprising: transmission means for transmitting to the device. A program comprising a computer and executed by a server device capable of transmitting and receiving data to and from a terminal device via a network,
Page information acquisition means for acquiring, from the terminal device, page information which is determined based on a user input to the terminal device and which is information relating to a page including one or more contents;
Content request information acquisition means for acquiring content request information that is determined based on a user input to the terminal device and that requests content included in the page from the terminal device;
As a prevention program for preventing unauthorized use of content executed on the terminal device, a basic prevention program, which is a prevention program associated with the page, and prevention associated with each content included in the page Prevention program storage means for storing the program,
A basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and a prevention program corresponding to the content indicated by the content request information is acquired and the terminal device. A program for causing the computer to function as transmission means for transmitting to a computer. The page includes the one or more contents and a reproduction display area that is an area other than an area in which the content is displayed.
The program according to claim 6, wherein the prevention program storage unit stores the basic prevention program in association with the reproduction display area. The prevention program storage means stores a plurality of prevention programs for specific content,
The program according to claim 6 or 7, wherein the transmission unit transmits the plurality of prevention programs for the specific content. Priorities are set for a plurality of prevention programs for the specific content,
The program according to claim 8, wherein the transmission unit transmits the plurality of prevention programs including the priority order for the specific content. A program comprising a computer and executed by a server device capable of transmitting and receiving data to and from a terminal device via a network,
Page information acquisition means for acquiring, from the terminal device, page information which is determined based on a user input to the terminal device and which is information relating to a page including one or more contents;
Content specifying means for specifying the content included in the page based on the page information;
As a prevention program for preventing unauthorized use of content executed on the terminal device, a basic prevention program, which is a prevention program associated with the page, and prevention associated with each content included in the page Prevention program storage means for storing the program,
A basic prevention program corresponding to the page indicated by the page information is acquired from the prevention program storage means and transmitted to the terminal device, and a prevention program corresponding to the content specified by the content specifying means is acquired and the terminal A program for causing a computer to function as a transmission means for transmitting to an apparatus.

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