JP3578101B2 - Content providing method and apparatus, content providing program, and storage medium storing content providing program - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
[0002]
The present invention relates to a content providing method and apparatus, a content providing program, and a storage medium storing the content providing program, and more particularly to a content providing method and apparatus for providing content such as music and video to a user via a network and The present invention relates to a content providing program and a storage medium storing the content providing program.
[0003]
[Prior art]
[0004]
In recent years, with the digitization of information and the spread of the Internet, distribution and provision of content such as video and music using a network have become possible. In addition, Internet users can exchange information and communicate with each other by e-mail, bulletin board, and chat. For example, when communicating on a topic about a certain music, the music itself that is a topic that is a digital content can also be transmitted to the other party.
[0005]
However, this situation poses a serious threat to copyright owners who are producing content. In other words, the copyright holder pays for producing the content, and sells the content in order to collect it, and earns money.The right is a legitimate right recognized by the copyright law. Nevertheless, it has become possible to copy and distribute digitized contents between users without permission.
[0006]
In order to solve such a problem, copy control and prevention techniques have been proposed. For example, a recorder for copying music content recorded on a compact disc to a digital recording medium such as a mini disc has a mechanism for restricting or prohibiting dubbing from digital to another digital recording medium. In this way, we are trying to guarantee the rightful revenue of the copyright owner.
[0007]
[Problems to be solved by the invention]
[0008]
However, the above-described conventional copy control and prevention techniques make it difficult for users to communicate about content. This is because communication via the Internet exchanges digital data. Such a situation is not pleasing to the user.
[0009]
Many users are looking for techniques that enhance their communication skills without violating copyright. Also, the copyright owner does not want to restrict communication between users without copyright infringement, but rather positively regards that sales promotion can be expected due to word-of-mouth effects etc. Seeking a guarantee of the price of
[0010]
Conventionally, there is no way to prevent content infringement at the same time as seeking for the content.
[0011]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a content providing method and apparatus, a content providing program, and a content providing program which enable communication in which content is discussed as a topic and at the same time protect the right of a copyright owner to be paid for. It is an object of the present invention to provide a storage medium having stored therein.
[0012]
[Means for Solving the Problems]
[0013]
FIG. 1 is a diagram for explaining the principle of the present invention.
[0014]
The present invention (claim 1) provides a content providing method for providing content to a user,
Acquiring the advertising information of the content, acquiring the content ID, the information of the acquisition source of the content, the DCD describing the information on the content and available services included in the advertising information (step 1),
A request, which is service request information from a user, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationGenerate RRDS (step 2),
From the service provider's location information stored in advance,Acquiring the location information of the service provider that provides the service corresponding to the request included in the RRDS (step 3), and, based on the location information of the service provider, information for the purchase settlement processing for the content purchased by the service provider; The user terminal ID uniquely assigned to the user terminal is transmitted (step 4),
Requested from service provider based on user terminal ID, encryptedcontentIn the user terminalTreated withThecontentUsing a decryption module in a tamper-resistant device having a tamper-resistant configuration having a tamper-resistant configuration.contentDecryptAnd store (Step 5),
DecryptedcontentIs stored in the index table as a set of the storage location information and DCD stored therein (step 6),
StoredcontentWhen the user inputs a DCD for playing back, Based on the DCDIndex tableSearchAnd the DCD based on the storage location information corresponding to DIs read and reproduced (step 7).
[0015]
The present invention (claim 2) provides a content providing method for providing content to a user,
Acquiring the advertising information of the content, acquiring the content ID, the information of the acquisition source of the content, the DCD describing the information on the content and available services included in the advertising information,
User terminalcontentBetween the user terminal and a tamper-resistant memory device having a configuration that cannot be tampered with and a tamper-resistant memory device that can be connected,
A request, which is service request information from a user, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationGenerate RRDS,
From the service provider's location information stored in advance,Obtain location information of a service provider that provides a service corresponding to the request included in the RRDS,
Based on the location information of the service provider, transmit information for purchase settlement processing for the content to be purchased to the service provider, and a memory device ID uniquely assigned to the memory device,
The encrypted data requested by the service provider based on the memory device IDcontentIn the user terminalContent handled byUsing a decryption module in a memory device connected to a tamper-resistant device having a tamper-resistant configurationcontentDecrypts
DecryptedcontentIs stored in the index table as a set of the storage position information and DCD stored therein,
StoredContent ContentWhen a user inputs a DCD for reproducingBased on the DCDIndex table in memory deviceSearchAnd the DCContent decrypted based on storage location information corresponding to DIs read and played.
[0016]
FIG. 2 is a diagram illustrating the principle of the present invention.
[0017]
The present invention (claim 3) is a content providing device for providing content to a user,
Over the networkcontentCommunication means 10 for transmitting and receiving data;
A request from the user and an input of DCD describing information on contents and available services are received, and the reproducedcontentInterface means 20 for outputting to the user
A tamper-resistant device having a memory and having a configuration in which data cannot be tampered with;
Obtain advertising information for the content and include the information in the advertising information.Uniquely assigned to each contentDCD acquisition means 30 for acquiring a content ID, information on a content acquisition destination, information on the content and a DCD describing available services,
Interface means20Request, which is service request information input from a user via the terminal, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD.InformationRRDS generation means 40 for generating RRDS;
Provider location information acquisition means 50 for acquiring location information of a service provider that provides a service corresponding to a request based on RRDS from location information of a service provider stored in advance;
A settlement unit 60 that transmits information for purchase settlement processing for content purchased by the service provider based on the location information of the service provider, and a user terminal ID uniquely assigned to the user terminal;
Requested from service provider based on user terminal ID, encryptedcontentAnd decrypted using the decryption module in the previous tamper-resistant device, andcontentDecoding means 70 for storing
DecryptedcontentIndex storage means 80 for recording the storage position information and DCD as a set in the index table,
StoredcontentIs input by the user via the interface means,Based on the DCDIndex tableSearchAnd the DCDBased on the location information corresponding to theAnd reproducing means 90 for reading out and reproducing.
[0018]
The present invention (claim 4) is a content providing device for providing content to a user,
Over the networkContent handled on the deviceCommunication means for transmitting and receiving data; and
A request from the user and an input of DCD describing information on contents and available services are received and the reproducedcontentInterface means for outputting to the user,
A tamper-resistant device having a configuration that prevents data tampering,
A memory device having a configuration that disables tampering of data that can be connected to the tamper-resistant device;
DCD acquisition means for acquiring advertising information of the content, and acquiring a DCD describing information on a content ID, an acquisition destination of the content, information on the content, and available services included in the advertising information;
Authentication means for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request, which is service request information input from the user via the interface means, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationRRDS generation means for generating RRDS;
Provider location information acquisition means for acquiring location information of a service provider that provides a service corresponding to a request based on the RRDS from location information of a service provider held in advance;
Payment means for transmitting information for purchase payment processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device;
Requested based on memory device ID, encrypted from service providerContent ContentAnd decrypted using the decryption module in the memory device connected to the tamper-resistant device in the user terminal,contentDecoding means for storing
DecryptedcontentIndex storage means for recording the storage position information and DCD as a set in an index table in the memory;
StoredcontentWhen a user inputs a DCD for reproducingBased on the DCDIndex tableSearchAnd the DCDContent decrypted based on the location information corresponding toAnd reproducing means for reading out and reproducing from the memory device.
[0019]
The present invention (claim 5) is a content providing program for providing content to a user,
On the computer,
DCD acquisition for acquiring the advertising information of the content and acquiring the DCD that describes the content ID, the information of the acquisition source of the content, the information on the content and the available services included in the advertising informationStepsWhen,
Authentication for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminalStepsWhen,
IA request, which is service request information input from a user via the interface means, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationRRDS generation to generate RRDSStepsWhen,
Provider location information acquisition for acquiring service provider location information that provides a service corresponding to a request based on the RRDS from service provider location information stored in advanceStepsWhen,
Payment for transmitting information for purchase payment processing for content purchased by the service provider and a memory device ID uniquely assigned to the memory device based on the location information of the service providerStepsWhen,
Requested based on memory device ID, encrypted from service providercontentAnd decrypted using the decryption module in the memory device connected to the tamper-resistant device in the user terminal,contentStore decryptionStepsWhen,
DecryptedcontentIs stored as an index in the index table in the memory in combination with the storage position information in which DC is stored and the DCDStepsWhen,
StoredcontentWhen a user inputs a DCD for reproducingBased on the DCDIndex tableSearchAnd the DCDDecrypted content based on the storage location information corresponding toRead from the memory device and played backStepsAndLet it run.
[0020]
The present invention (claim 6) is a content providing program for providing content to a user,
On the computer,
DCD acquisition for acquiring the advertising information of the content and acquiring the DCD that describes the content ID, the information of the acquisition source of the content, the information on the content and the available services included in the advertising informationStepsWhen,
Authentication for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminalStepsWhen,
IA request, which is service request information input from a user via the interface means, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationRRDS generation to generate RRDSStepsWhen,
Provider location information acquisition for acquiring service provider location information that provides a service corresponding to a request based on the RRDS from service provider location information stored in advanceStepsWhen,
Payment for transmitting information for purchase payment processing for content purchased by the service provider and a memory device ID uniquely assigned to the memory device based on the location information of the service providerStepsWhen,
Requested based on memory device ID, encrypted from service providerContent ContentAnd decrypted using the decryption module in the memory device connected to the tamper-resistant device in the user terminal,contentStore decryptionStepsWhen,
DecryptedcontentIs stored as an index in the index table in the memory in combination with the storage position information in which DC is stored and the DCDStepsWhen,
StoredcontentWhen a user inputs a DCD for reproducingBased on the DCDIndex tableSearchAnd the DCDBased on the storage location information corresponding to Decrypted contentRead from the memory device and played backStepsAndLet it run.
[0021]
The present invention (claim 7) is a storage medium storing a content providing program for providing content to a user,
On the computer,
DCD acquisition for acquiring the advertising information of the content and acquiring the DCD that describes the content ID, the information of the acquisition source of the content, the information on the content and the available services included in the advertising informationStepsWhen,
Authentication for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminalStepsWhen,
A request, which is service request information input from the user via the interface means, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationRRDS generation to generate RRDSStepsWhen,
Provider location information acquisition for acquiring the location information of the service provider that provides the service corresponding to the request based on the RRDS from the location information of the service provider held in advanceStepsWhen,
Payment for transmitting information for purchase payment processing for content purchased by the service provider and a memory device ID uniquely assigned to the memory device based on the location information of the service providerStepsWhen,
Requested based on memory device ID, encrypted from service providerContent Content ContentAnd decrypted using the decryption module in the memory device connected to the tamper-resistant device in the user terminal,contentStore decryptionStepsWhen,
DecryptedcontentIs stored as an index in the index table in the memory in combination with the storage position information in which DC is stored and the DCDStepsWhen,
StoredcontentWhen a user inputs a DCD for reproducingBased on the DCDIndex tableSearchAnd the DCDDecrypted content based on the storage location information corresponding toRead from the memory device and played backStepsAndStores the program to be executed.
[0022]
The present invention (claim 8) is a storage medium storing a content providing program for providing content to a user,
On the computer,
DCD acquisition for acquiring the advertising information of the content and acquiring the DCD that describes the content ID, the information of the acquisition source of the content, the information on the content and the available services included in the advertising informationStepsWhen,
Authentication for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminalStepsWhen,
A request, which is service request information input from the user via the interface means, a system profile, which is information indicating the level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and a DCD are combined.InformationRRDS generation to generate RRDSStepsWhen,
Provider location information acquisition for acquiring service provider location information that provides a service corresponding to a request based on the RRDS from service provider location information stored in advanceStepsWhen,
Payment for transmitting information for purchase payment processing for content purchased by the service provider and a memory device ID uniquely assigned to the memory device based on the location information of the service providerStepsWhen,
Requested based on memory device ID, encrypted from service providercontentAnd decrypted using the decryption module in the memory device connected to the tamper-resistant device in the user terminal,contentStore decryptionStepsWhen,
DecryptedcontentIs stored as an index in the index table in the memory in combination with the storage position information in which DC is stored and the DCDStepsWhen,
StoredcontentWhen a user inputs a DCD for reproducingBased on the DCDReferring to the index table, the DCDDecrypted content based on the storage location information corresponding toRead from the memory device and played backStepsAndStores the program to be executed.
[0023]
As described above, according to the present invention, a user can perform communication about a content by using information representing a content called DCD. Also, directly from the DCDcontentCan be purchased and played back, and DCD functions as a convenient symbol for content.
[0024]
Also purchased using DCDcontentIs encrypted and transmitted, and can be decrypted only by a module in a tamper-resistant device such as an IC card in a user terminal. by this,contentWill not be able to see directly, and it is impossible to infringe on the copyright owner's right to pay for money, such as illegal copying.
[0025]
In addition, in a memory device that is portable and can be connected to various terminalscontentRecords that the user purchasedcontentCan be reproduced and used on various terminals, and the convenience is improved.
[0026]
In addition, in the memory device owned by the user on another user's terminal,contentCan be played back, which is useful not only for communication on a network but also for face-to-face communication that has been conventionally used.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
[0028]
Prior to the following description, terms used in the following description will be described.
[0029]
The “content ID” indicates a number that uniquely indicates the content.
[0030]
"Service"contentRefers to the function of the processing performed on Specifically, it refers to individual functions such as content delivery and format conversion.
[0031]
“Service provider” refers to a server that provides a service.
[0032]
“Request” is service request information presented by the user, and is described in a service description method. Specifically, it is "want to see" or "want to listen".
[0033]
The “user policy” is information indicating a condition specified by the user to restrict the service. For example, charge conditions and location conditions. Specifically, "service can be provided at a charge of XX yen or less", "domestic service provider only", "payment method using no credit card" And so on.
[0034]
An “application” is software or hardware that runs on a user terminal and is used to receive a service, or both.
[0035]
The “system profile” is information indicating a function level of a terminal, an operating system, an application, or the like. For example, the type of the user terminal, communication speed, processing speed, display function, operating system, registered application information, and the like.
[0036]
“DCD (distributed content Descriptor: distribution content identifier)” refers to a content ID and a set of service descriptors representing services for the content specified by the content ID (this is called service list information) and a subset of attribute information It is data including.
[0037]
First, a content providing system on which the present invention is based will be described.
[0038]
FIG. 3 shows an outline of a configuration of a content providing system which is a premise in one embodiment of the present invention.
[0039]
The content providing system shown in FIG. 1 includes a content-related information providing apparatus 100 which is a server to which RRDS is input, a user terminal 200, and a service provider 300.
[0040]
It is assumed that the user terminal 200 has a DCD obtained in some form, such as manual input by the user or download from the World Wide Web (WWW). Represented by the content ID described in the DCDContentA user who desires delivery inputs the request as a request.
[0041]
The DCD handler 230 is a mechanism that operates on the user terminal 200, and receives DCD and a request as inputs. The DCD handler 230 has a user policy and a system profile. The DCD handler 230 generates an RRDS by combining a DCD, a request, a user policy, and a system profile, and transmits the RRDS to the content-related information providing apparatus 100.
[0042]
The content-related information providing apparatus 100 includes an attribute information database 110 and a service provider information database 120. The content-related information providing apparatus 100 searches the attribute information database 110 for attribute information of the content corresponding to the DCD in the RRDS,contentTo obtain the service provider information that is the delivery source of. Further, a service provider that satisfies the conditions described in the content attribute information, the request (content distribution request) information in the RRDS, the user policy, and the system profile is selected. The selected service provider information and the attribute information of the content are transmitted to the user terminal 200 as a resolve result.
[0043]
When the DCD handler 230 of the user terminal 200 acquires the resolve result including the service provider information and the content attribute information from the content-related information providing apparatus 100, the DCD handler 230 presents the resolve result to the user. The DCD handler 230 waits for an input from the user, performs the same processing again according to the input, and inquires the content-related information providing apparatus 100 for information. Alternatively, when the service provider 300 is uniquely specified, the application corresponding to the service provider 300 is started, and necessary information such as attribute information of the content is passed to the application.
[0044]
The application makes a service request to the service provider 300 specified above, and the service provider 300 responds to the service request.contentTo the application. This allows the user to access from the service provider through the applicationcontentCan be received.
[0045]
FIG. 4 is a sequence chart showing an outline of an operation of the content providing system which is a premise in one embodiment of the present invention.
[0046]
Step 101) The user terminal 200 receives a DCD and a request input from a user. In addition, DCD can be acquired by downloading from WWW or the like besides the user.
[0047]
Step 102) The RRDS is generated by the DCD handler 230 of the user terminal 200 by combining the DCD, request, user policy, and system profile.
[0048]
Step 103) The RRDS generated by the DCD handler 230 is transmitted to the content-related information providing apparatus 100.
[0049]
Step 104) The content-related information providing apparatus 100 determines the number of pieces of information corresponding to DCD in the RRDS.EachOf the attribute information from the attribute information database 110,contentAnd obtains service provider information that satisfies the conditions described in the content distribution request information, the user policy, and the system profile.
[0050]
Step 105) The search result is transmitted to the user terminal 200 together with the content attribute information as a resolve result.
[0051]
Step 106) The user terminal 200 presents the result of the resolve to the user, and when the DCD or the request is received again from the user, performs the same processing as the processing from the above step 101. If the service provider is uniquely determined in step 104, the application corresponding to the service provider is started.
[0052]
Step 107) The application in the user terminal 200 issues a service request to the specified service provider 300.
[0053]
Step 108) The service provider 300 responds to the service request.contentTo the user terminal 200.
[0054]
Thereby, the user terminal 200contentCan be presented to the user.
[0055]
[First Embodiment]
FIG. 5 shows a system configuration according to the first embodiment of the present invention.
[0056]
The system shown in FIG. 1 includes, on a network 400, a service provider 300 that provides content, a content-related information providing apparatus 100 that stores attribute information on the content, and a user terminal 200.
[0057]
FIG. 6 shows a configuration of a user terminal according to the first embodiment of the present invention.
[0058]
The user terminal 200 shown in FIG. 1 includes a tamper-resistant device 210, a local resolver 220 that receives a request for introducing attribute information about DCD from a user, a DCD handler 230 for handling DCD, and a communication processing unit 240 that performs communication processing. You.
[0059]
It is assumed that the tamper-resistant device 210 is an IC card (having logic hidden in a chip) having a structure in which it is difficult to analyze internal logic and data.
[0060]
The tamper-resistant device 210 exchanges data with components other than the tamper-resistant device 210 in the user terminal 200, and controls an external interface 211 that performs control to convert the data into a data format usable by the tamper-resistant device 210. Memory device 212 for storing content, for reproducing contentcontentPlayback device 213 and encryptioncontentIs composed of a decoding module 214 for decoding. Further, the tamper-resistant device 210 holds a user terminal ID for uniquely identifying the user terminal 200.
[0061]
The outline of the operation of the above system will be described below.
[0062]
FIG. 7 is a sequence chart showing an outline of the operation in the first embodiment of the present invention.
[0063]
Step 201) The service provider 300 that provides content registers attribute information on the content to be provided in the content-related information providing apparatus 100.
[0064]
Step 202) The content-related information providing apparatus 100 issues an identifier uniquely indicating the content called a content ID, and at the same time creates data called DCD in which the content ID is a part of the attribute information, and sends it to the service provider. Send to 300.
[0065]
Step 203) The service provider 300 distributes the advertisement information of the content through various media such as magazines, newspapers, radios, televisions, and WWW (World Wide Web). At this time, the content is advertised by adding the DCD to the advertisement information.
[0066]
Step 204) The user obtains the DCD based on the advertisement information of the content. By operating the obtained DCD with the DCD handler 230, it is possible to know the attribute information of the content and to receive the service related to the content.
[0067]
Step 205) The user is indicated by DCDContentWhen purchasing, a purchase request is input to the DCD handler 230 together with the DCD. As a result, the DCD handler 230 combines the DCD, the request, the system profile, and the user policy to generate data called RRDS.
[0068]
Step 206) The DCD handler 230 sends the RRDS to the local resolver 220.
[0069]
Step 207) The local resolver 220 (in some cases, the content-related information providing apparatus 100 on the network 400 via the communication processing unit 240) acquires the location information on the network of the service provider 300 that sells the content. Then, this is returned to the DCD handler 230.
[0070]
Step 208) The DCD handler 230 performs purchase settlement processing with the service provider 300 (possibly accompanied by a user operation). At this time, the DCD handler 230 reads the user terminal ID via the external interface unit 211 of the tamper-resistant device 210 and sends it to the service provider 300.
[0071]
Step 209) The service provider 300 ensures that the decryption can be correctly performed only in the tamper-resistant device 210 of the user terminal 200 obtained by the purchase settlement processing with the user terminal 200.contentTo encrypt.
[0072]
Step 210) The service provider 300 sends the encryptedcontentIs transmitted to the user terminal 200 that has performed the purchase settlement processing.
[0073]
Step 211) The user terminal 200 is encrypted through the external interface 211.contentIs sent to the decryption module 214 in the tamper-resistant device, and thecontentIs decrypted.
[0074]
Step 212) decryptedcontentIs stored in the memory device 212. At this time, in any place in the memory device 212,contentIs stored in the index table in the memory device 212 in combination with the DCD, which indicates whether or not is stored.
[0075]
Step 213) Here, the user has purchasedcontentIf you want to play back theTo 0Upon input, the DCD handler 230 sends the RRDS to the local resolver 220. As a result, the local resolver 220 checks via the external interface 211 whether index information corresponding to the content ID described in the DCD exists in the index table in the memory device 212. The index information is returned to the DCD handler 230. The DCD handler 230 sends the index information to the content player 213,contentRequest playback of. As a result, the content player 213 reads from the memory device 212 based on the index information.contentAnd read it out.
[0076]
[Second embodiment]
FIG. 8 shows a configuration of a user terminal according to the second embodiment of the present invention. 6, the same parts as those of FIG. 6 are denoted by the same reference numerals, and the description thereof will be omitted.
[0077]
The user terminal 200 includes a DCD handler 230 for operating the DCD, a local resolver 220 for receiving an attribute information introduction request from the user for the DCD, a communication processing unit 240 for performing communication processing, and a tamper-resistant device 210. .
[0078]
The tamper-resistant device 210 includescontent213 for exchanging data with the tamper-resistant device 210 and components in the user terminal 200 excluding the tamper-resistant device 210, and the input data can be used by the tamper-resistant device 210. There is an external interface 211 for controlling the conversion to a format, and a removable memory device 215 is connected to the tamper-resistant device. In addition, the memory device 215 itself is tamper-resistant hardware that does not allow data tampering, and can be connected to another type of user terminal or another user's user terminal. It has a memory device ID that uniquely identifies the memory device.
[0079]
FIG. 9 is a sequence chart showing an outline of the operation in the second embodiment of the present invention.
[0080]
Step 301) The service provider 300 that provides content registers attribute information on the content to be provided in the content-related information providing apparatus 100.
[0081]
Step 302) The content-related information providing apparatus 100 issues an identifier uniquely indicating the content called a content ID, and at the same time creates data called DCD in which the content ID is made up of a part of the attribute information. Send to 300.
[0082]
Step 303) The service provider 300 distributes the advertising information of the content through various media such as a magazine, a newspaper, a radio, a television, and a WWW (World Wide Web). At this time, the content is advertised by adding the DCD to the advertisement information.
[0083]
Step 304) The user acquires the DCD based on the advertisement information of the content. By operating the obtained DCD with the DCD handler 230, it is possible to know the attribute information of the content and to receive the service related to the content.
[0084]
Step 305) When the user selects the content indicated by DCDcontentWhen the user purchases the purchase request, the purchase request is input to the DCD handler 230 together with the DCD. As a result, the DCD handler 230 combines the DCD, the request, the system profile, and the user policy to generate data called RRDS.
[0085]
Step 306) The DCD handler 230 sends the RRDS to the local resolver 220.
[0086]
Step 307) The local resolver 220 (or the content-related information providing apparatus 100 on the network 400 via the communication processing unit 240 in some cases) acquires the location information on the network of the service provider 300 that sells the content. Then, this is returned to the DCD handler 230.
[0087]
Step 308) The DCD handler 230 reads the memory device ID via the external interface unit 211 of the tamper-resistant device 210 and sends the memory device ID to the service provider 300 together with the content ID (possibly with the operation of the user). The purchase settlement processing is performed with the provider 300.
[0088]
Step 309) The service provider 300 prevents decryption correctly unless the memory device ID in the tamper-resistant device 210 of the user terminal 200 obtained by the purchase settlement processing with the user terminal 200 is used.contentTo encrypt.
[0089]
Step 310) The service provider 300 sends the encryptedcontentIs transmitted to the user terminal 200 that has performed the purchase settlement processing.
[0090]
Step 311) The user terminal 200 is encrypted through the external interface 211.contentIs transmitted to the decryption module 214 in the tamper-resistant device 210, and thecontentIs decrypted.
[0091]
Step 312) DecryptedcontentIs stored in the memory device 212. At this time, in any place in the memory device 212,contentIs stored in the index table in the memory device 212 in combination with the DCD, which indicates whether or not is stored.
[0092]
Step 313) Here, the user has purchasedcontentIs to be reproduced, a reproduction request is input to the DCD handler 230, and the DCD handler 230 sends an RRDS to the local resolver 220. As a result, the local resolver 220 stores the index information corresponding to the content ID described in the DCD via the external interface 211 in the memory device 212 connected to the tamper-resistant device 210.indexIt checks whether it exists in the table, and if so, returns the index information to the DCD handler 230. The DCD handler 230 sends the index information to the content player 213,contentRequest playback of. As a result, the content player 213 reads from the memory device 212 based on the index information.contentAnd read it out.
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0093]
[First Embodiment]
First, a content providing system according to the present embodiment will be described with reference to FIG.
[0094]
The content providing system according to the present embodiment includes a user terminal 200 operated by a user, a service provider 300 operated by a content provider, and a database of attribute information related to the content. The content-related information providing apparatus 100 assigns a content ID that is a unique identifier.
[0095]
FIG. 10 is a diagram for explaining content attribute registration, content ID issuance, and DCD issuance according to the first embodiment of this invention.
[0096]
The service provider 300 sends attribute information (including information such as the name, type, creator name, price, and sales location) of the content to be provided to the content-related information providing apparatus 100, and requests registration of the attribute information. .
[0097]
In response to the request, the content-related information providing apparatus 100 issues a content ID, which is information for uniquely identifying the content, and sets the content ID and the transmitted attribute information as a set in the content-related information providing apparatus 100. Register in the attribute information database 110.
[0098]
Next, information called DCD, which is a part of the content ID and the attribute information, is issued and returned to the service provider 300.
[0099]
FIG. 11 is a diagram for explaining a content advertising method according to the first embodiment of the present invention.
[0100]
The service provider 300, which has obtained the DCD of the content provided by itself, transmits the advertisement information of the content through various media such as a magazine, a newspaper, a television, a street poster, and WWW. At this time, DCD is attached to the advertisement. As a method of attaching DCD, which is digital information, to analog media such as a poster or the like, a method using a digital watermark technique, a barcode, or the like is used. The user terminal acquires the DCD distributed together with the advertising information in such a manner, and stores the DCD in the storage unit.
[0101]
Here, a method of embedding a digital watermark using a digital watermark technique will be described with reference to FIG.
[0102]
In the case of a document as shown in FIG. 12, an ID of a digital watermark as shown in FIG. 12 is embedded in the entire background of the document, and the “Table A” is inserted in a portion corresponding to “Table A”. A digital watermark indicating the ID of the image is embedded in a portion corresponding to the image in FIG.
[0103]
The document data in which the digital watermark is embedded in this way isEntersWhen the user operates the digital watermark, the digital watermark is read and attribute information (DCD) is obtained. The user who has acquired the document data reads the document data as an image using an input device constituting image reading means such as a digital camera, a video camera, a scanner, etc., and converts the data from analog data to digital data. Then, the digital data converted document data is subjected to digital watermark reading processing, andEmbeddingThe digital watermark (DCD) included in the document is read, and each DCD embedded in the above document or chart is extracted.
[0104]
Next, the user terminal 200 will be described with reference to FIG.
[0105]
The user terminal 200 includes a DCD handler 230 for operating the DCD, a local resolver 220 for receiving a request for introducing attribute information about DCD from a user, a communication processing unit 240 for performing communication processing, and a tamper-resistant device ( For example, Mori.r .: "Protected Module" 210 (The Institute of Electronics, Information and Communication Engineers, Proceedings of the Symposium on Cryptography and Information Security, SCIS90-6B, pp.1-10 (1990)) 210.
[0106]
The tamper-resistant device 210content, And exchanges data with other components in the user terminal 200 other than the tamper-resistant device 210, and performs control to convert the data into a data format usable by the tamper-resistant device 210. There is an external interface 211, and the tamper-resistant device 210 has a user ID for uniquely identifying a user terminal. Further, it has a decryption module 214 for decrypting the encrypted data.
[0107]
The tamper-resistant device 210 has a structure such that information and mechanisms in the tamper-resistant device 210 cannot be externally accessed. Done through.
[0108]
The operation of the above configuration will be described below.
[0109]
(1)  When the user obtains information / service related to the content from the obtained DCD, the DCD and a request indicating what kind of information / service the user wants to obtain from the DCD are input to the DCD handler 230.
[0110]
(2)  In the DCD handler 230, there are information called a system profile representing the specifications of the user terminal 200 and information called a user policy which is information such as a priority specified by the user in advance. It creates information called RRDS and sends it to the local resolver 220.
[0111]
(3)  Similar to the content-related information providing apparatus 100, the local resolver 220 has an attribute information database (not shown) related to the content. If there is information that matches a request specified by the RRDS, the local resolver 220 transmits the information to the DCD handler 230. To return. When the user terminal 200 is connected to the network 400, the user terminal 200 transmits the RRDS to the content-related information providing apparatus 100 via the communication processing unit 240 via the network 400, and requests a search for information corresponding to the request. . In addition, information that satisfies the user's request can be searched cooperatively among more content-related devices. As a method for that, the following method has been proposed.
[0112]
The user has the content ID: nk. x. In order to request some service based on the DCD including m, the DCD and the request are sent to the DCD handler 230. The DCD handler 230 generates an RRDS. First, the local resolver 250 checks whether there is attribute information corresponding to the content ID, and sends the RRDS to the content-related information providing apparatus 100.
[0113]
The content-related information providing device that has received the RRDS sends the RRDS to another content-related information providing device 100, and finally, the RRDS reaches the nkth content-related information providing device 100. The nkth content-related information providing device attempts to connect to the user terminal 200 having the xth local resolver with reference to the content ID. If the user terminal 200 having the nkth local resolver 250 and the xth local resolver 250 of the content-related information providing device cannot communicate with each other, a resolve result indicating that the resolve could not be performed is returned. If the user terminal 200 having the nk-th content-related information providing device and the x-th local resolver 250 can communicate, the nk-th content-related information providing device sends the RRDS to the x-th local resolver. Since the x-th local resolver has attribute information corresponding to a plurality of content IDs, it generates a resolve result based on the attribute information, and finally returns this to the DCD handler 230 that first generated the RRDS. .
[0114]
(4)  As for the information or the request that matches the request, the resolve result is sent to the DCD handler 230 and presented to the user.
[0115]
(5)  This allows the user to obtain the content title, author name, content type (moving image, music, still image, game, etc.), genre (rock, enka, etc.), performer, performer, original creator, viewing service, etc. It is possible to obtain a great deal of information and enjoy services such as related contents (for music, a television program with the theme song). In other words, it functions as one symbol representing content. Therefore, communication regarding contents can be performed between users using the DCD. And by this DCD operation,contentYou can also buy and play.
[0116]
next,contentWill be described.
[0117]
FIG. 13 shows a first embodiment of the present invention.contentIt is a figure for explaining settlement processing of.
[0118]
According to the above information acquisition procedure from DCDcontentAfter the location of the service provider 300 that sells the service provider 300 is determined, the DCD handler 230 performs purchase settlement processing with the service provider 300 via the network 400 via the communication processing unit 240.
[0119]
Next, transmission and reception of user terminal ID information in the content purchase settlement processing will be described.
[0120]
FIG. 14 is a diagram showing exchange of user terminal ID information during content purchase settlement processing according to the first embodiment of the present invention.
[0121]
The DCD handler 230 reads, via the external interface 211, the user terminal ID held in the tamper-resistant device 210 during the purchase settlement processing with the service provider 300, and reads this through the communication processing unit 240. To the service provider 300 via the Internet.
[0122]
Next, a content encryption process in the service provider 300 will be described.
[0123]
FIG. 15 is a diagram illustrating a service provider according to the first embodiment of the present invention.contentIt is a figure showing an encryption processing procedure. FIG. 2A shows a method of acquiring a corresponding public key from a user terminal ID sent from the user terminal 200, and FIG.contentFIG.
[0124]
The service provider 300contentEavesdropping on the communication path of the user and decoding can be performed correctly only with the user terminal 200 of the purchased user.contentTo encrypt. Various methods are conceivable as an encryption method. For example, as shown in FIG. 2A, the tamper-resistant device 210 holds a secret key in a public key cryptosystem in the memory device 212 and stores the corresponding public key in the memory device 212. Assuming that there is an environment in a PIK (Public Key Infrastructure) that can be obtained by anyone using the user terminal ID, the corresponding public key is obtained from the user terminal ID sent from the service provider 300, and make use ofcontentTo encrypt.
[0125]
Also, as shown in FIG.contentAnd obtain the public key andcontentThere is a method of encrypting.
[0126]
Next, encryption at the user terminal 200contentWill be described.
[0127]
FIG. 16 is a diagram illustrating an operation of receiving the encrypted content according to the first embodiment of this invention. Purchased by purchase settlement processingcontentIs a service providerDaIt is encrypted as described above by 300 and sent to the user terminal 200. The user terminal 200 is encryptedcontentIs received by the communication processing unit 240 and sent to the decoding module 214 in the tamper-resistant device 210 via the external interface 211. At this time, the DCD corresponding to the purchased content is also transmitted from the DCD handler 230 to the decryption module 214 of the tamper-resistant device 210 at the same time. The decryption module 214 of the tamper-resistant device 210 performs encryption using its own secret key held in the memory 212.contentDecryptscontentAnd this is recorded in the memory device 212.
[0128]
Here, the memory device 212 will be described.
[0129]
FIG. 17 shows the configuration of the memory device according to the first embodiment of the present invention. Shown in the figurememoryThe device 212 includes a data area 217 in which actual data is recorded, and an index information table 216 which is a database of index information indicating a correspondence between which data is in which location on the data area 217. Decrypted by the above receiving procedurecontentIs recorded at a certain location on the data area 217, and the memory device 212 stores the DCD given at the same time,contentThe index information is created by combining the recording locations of the two, and is added to the index information table 216.
[0130]
Next, the user purchasedcontentWill be described.
[0131]
FIG. 18 shows the first embodiment of the present invention.contentIt is a figure showing the reproduction processing of.
[0132]
(1)  User wants to playcontentIs specified using DCD, and is input to the DCD handler 230 together with a reproduction request indicating a reproduction request.
[0133]
(2)  The DCD handler 230 generates an RRDS and sends it to the local resolver 220.
[0134]
(3)  The local resolver 220 can refer to the index information table 216 of the memory device 212 via the external interface 211, and searches whether the DCD including the content ID in the DCD included in the RRDS exists in the index information table 216. Corresponding to DCDcontentObtain information on the recording location.
[0135]
(4)  The local resolver 220 sends the index information obtained by the search to the DCD handler 230.
[0136]
(5)  The DCD handler 230 sends the index information to the content player 213 of the tamper-resistant device 210 via the external interface 211,contentRequest playback of.
[0137]
(6)  The content reproducing device 213 sends a message from the memory device 212 based on the index information.contentIs read and reproduced, and the reproduced content is output to the outside.
[0138]
Finally, an example of communication regarding content using DCD will be described.
[0139]
FIG. 19 is a diagram illustrating an example of DCD sharing according to the first embodiment of this invention.
[0140]
When communicating between users by e-mail, WWW, bulletin board, chat, etc.contentInstead, DCDs representing contents are transmitted and received.
[0141]
As described above, according to the present embodiment, when purchasing a content, the user knows what the content is from various aspects by using a DCD obtained in advance from a declaration regarding the content. be able to.
[0142]
In addition, the purchased content is encrypted so that only the purchaser can reproduce it, thereby solving the problem of unauthorized copying.
[0143]
Furthermore, regarding communication between users regarding content as a topic, various attribute information and information on services are described in the DCD, and there are many communications that can be established using only such information. For example, in a case where "a topic of a television program watched yesterday is shared between friends", communication is established even if the television program cannot be watched on the spot. At this time, it is more convenient if various information regarding the content is obtained from DCD which is a symbol representing the content. In addition, DCD for topic sharing functions as a common interface for various operations related to content, such as content promotion, content purchase, and content playback.Cage, High convenience. Copying and distribution of the DCD itself is free and can be used for communication between users.contentIn addition to the service provider's problem of securing value revenue, it has the secondary effect of improving the content advertising effect through word-of-mouth, and also allows users to operate content. There are advantages for both in terms of convenience of use and expansion of communication means.
[0144]
[Second embodiment]
This embodiment is the same as the first embodiment except for the following points.
[0145]
In the present embodiment, the memory device of the anti-tambar device 210 in the user terminal 200 is different from that of the first embodiment.
[0146]
First, the configuration of the user terminal 200 will be described with reference to FIG.
[0147]
The user terminal 200 includes a DCD handler 230 for operating the DCD, a local resolver 220 that receives a request from the user for introducing DCD attribute information, a communication processing unit 240 that performs communication processing, and a tamper-resistant device 210. .
[0148]
In the tamper-resistant device 210,contentFor playingcontentThere is an external interface 211 for controlling exchange between the reproducing device 213 and the outside of the tamper-resistant device 210, and has a detachable memory device 215 connectable to the tamper-resistant device 210.
[0149]
FIG. 20 shows the configuration of the memory device according to the second embodiment of the present invention.
[0150]
The memory layer 215 shown in the figure includes a data area 222 for recording actual data, an index information table 221 which is a database of index information indicating correspondence between which data is located in the data area 222, and a memory. It has a memory device interface 223 for controlling communication with the outside of the device 215. Also, a memory device ID for uniquely identifying the memory device is provided inside.
[0151]
The memory device 215 is hardware (for example, an IC card) having a function of making data tampering impossible, and can be connected to another user terminal or a user terminal of another user.
[0152]
encryptioncontentIs decrypted in the memory device 215 connected to the tamper-resistant device 210 via the external interface 211 and recorded in a location on the data area 222, and the memory device 215 is encrypted.contentAt the same time as the given DCD,contentIs created as a set of recording locations, and this is added to the index information table 221.
[0153]
Next, the connection between the tamper-resistant device 210 and the memory device 215 will be described.
[0154]
FIG. 21 shows the connection between the tamper-resistant device and the memory device according to the second embodiment of the present invention. When the tamper-resistant device 210 and the memory device 215 are physically connected, first, mutual authentication is performed between the devices, and the devices have terminal IDs registered in advance, and data cannot be tampered with. By judging whether or not the device has a function to make the tamper-resistant device and the memory device correct, it is authenticated. After the authentication is completed, the memory device 215 is held in the memory device 215 via the memory device interface 223 in response to a request from the tamper-resistant device 210.contentReference is made to internal information such as, or a vacant area in the memory device 215 is checked, and data writing is permitted when authentication is performed by mutual authentication.
[0155]
Next, transmission and reception of memory device ID information during content purchase processing will be described.
[0156]
FIG. 22 shows the transfer of the memory device D during the content purchase settlement processing according to the second embodiment of the present invention.
[0157]
The DCD handler 230 converts the memory device ID held in the memory device 215 connected to the tamper-resistant device 210 through the external interface 211 and the memory device interface during the purchase settlement processing with the service provider 300. This is read and sent to the service provider 300 via the communication processing unit 240.
[0158]
Next, an encryption process performed by the service provider 300 will be described.
[0159]
FIG. 23 shows the service provider according to the second embodiment of the present invention.contentThe following describes an encryption processing procedure. FIG. 2A shows a method of obtaining a corresponding public key from a memory device ID sent from a user terminal, and FIG.contentHere is a method for encrypting.
[0160]
The service provider 300contentEavesdropping on the communication path of the user and correct decoding only in the memory device 215 connected to the user terminal 200 of the purchased user.contentTo encrypt. As a method for this, various methods are conceivable. For example, as shown in FIG. 2A, the memory device 215 stores therein a secret key in a public key cryptosystem, and the corresponding public key is If there is an environment in a PKI (Public Key Infrastructure) that can be obtained by anyone using the memory device ID, a corresponding public key is obtained from the memory device ID sent from the service provider 300 and used.contentTo encrypt.
[0161]
Also, as shown in FIG.contentAnd obtain the public key andcontentThere is a method of encrypting.
[0162]
Next, encryption at the user terminal 200contentWill be described.
[0163]
FIG. 24 is a diagram illustrating reception of encrypted content in the user terminal according to the second embodiment of this invention.
[0164]
Purchased by purchase settlement processingcontentIs encrypted by the service provider 300 as described above and sent to the user terminal 200.
[0165]
The user terminal 200 is encryptedcontentIs received by the communication processing unit 240 and sent to the tamper-resistant device 210 via the external interface 211. At this time, the DCD corresponding to the purchased content is also sent from the DCD handler 230 to the tamper-resistant device 210 at the same time. The tamper-resistant device 210 sends the above two pieces of information to the memory device 215 via the memory device interface 223. The memory device 215 encrypts data using its own private key held inside.contentDecryptscontentAnd records it in the data area 222. At this time, as mentioned earlier, the encryptedcontentAt the same time as the given DCD,contentIs created as a set of recording locations, and this is added to the index information table 221.
[0166]
Next, the user purchasedcontentWill be described.
[0167]
FIG. 25 shows a second embodiment of the present invention.contentFIG. 6 is a diagram showing reproduction of a.
[0168]
(1)  User wants to playcontentIs specified using DCD, and is input to the DCD handler 230 together with a reproduction request indicating a reproduction request.
[0169]
(2)  The DCD handler 230 generates an RRDS and sends it to the local resolver 220.
[0170]
(3)  The local resolver 220 refers to the index information table 221 of the memory device 215 via the external interface 211 and the memory device interface 223 of the memory device 215, and converts the DCD including the content ID in the DCD included in the RRDS into the index information table. 221 is searched for and corresponds to DCDcontentObtain information on the recording location.
[0171]
(4)  The local resolver 220 sends the index information obtained by the search to the DCD handler 230.
[0172]
(5)The DCD handler 230 sends index information to the content player 213 in the tamper-resistant device 210 via the external interface 211,contentRequest playback of.
[0173]
(6)  The content reproducing device 213 is connected to the content reproducing device 213 via the memory device interface 223 based on the index information.contentRequest for reading.
[0174]
(7)  The memory device is located in the tamper-resistant device 210 that has been properly authenticated.contentIn response to a read request from the playback device 213,contentIs read.
[0175]
(8)  contentThe playback device 213 is connected to the memory device 215contentIs read out and reproduced, and reproduced and output to the outside.
[0176]
As described above, according to the present embodiment, in addition to the effects realized in the above-described first embodiment, the present invention can be implemented in a memory device that is portable and can be connected to various terminals.contentRecords that the user has purchasedcontentCan be reproduced and used on various terminals, and the convenience is improved.
[0177]
In addition, in the memory device owned by the user on another user's terminal,contentCan be played while preventing unauthorized copying, and it is possible to not only communicate on the network but also share contents as a topic in face-to-face communication, especially in the past, which aimed only at copy controlFor up toUser convenience is improved as compared to the content providing system.
[0178]
Further, it is also possible to construct the functions of the user terminal in the above description as a program and install it in the CPU of a computer used as the user terminal, or distribute the program via a network.
[0179]
Further, the constructed program may be stored in a portable storage medium such as a hard disk, a floppy disk, or a CD-ROM connected to a computer used as a user terminal, and installed when the present invention is implemented. Thereby, the present invention can be easily realized.
[0180]
It should be noted that the present invention is not limited to the embodiments described above, and various modifications and applications are possible within the scope of the claims.
[0181]
【The invention's effect】
[0182]
As described above, according to the present invention, it is possible to perform communication between users who talk about content by using DCD including a content ID and attribute information.
[0183]
In addition, the user purchased using DCDcontentIs encrypted and decrypted by tamper-resistant hardware (such as an IC card), thereby protecting the copyright and protecting the right of the creator of the content to be paid.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining the principle of the present invention.
FIG. 2 is a principle configuration diagram of the present invention.
FIG. 3 is a configuration diagram of a content providing system serving as a premise in one embodiment of the present invention.
FIG. 4 is a sequence chart showing an outline of an operation of a content providing system which is a premise in one embodiment of the present invention.
FIG. 5 is a system configuration diagram according to an embodiment of the present invention.
FIG. 6 is a configuration diagram of a user terminal according to the first embodiment of the present invention.
FIG. 7 is a sequence chart showing an outline of an operation according to the first embodiment of the present invention.
FIG. 8 is a configuration diagram of a user terminal according to the second embodiment of the present invention.
FIG. 9 is a sequence chart showing an outline of an operation according to the second embodiment of the present invention.
FIG. 10 is a diagram for explaining content attribute information, content ID issuance, and DCD issuance according to the first embodiment of this invention.
FIG. 11 is a diagram for explaining a content advertising method according to the first embodiment of the present invention.
FIG. 12 is a diagram for explaining a digital watermark embedding technique according to the first embodiment of the present invention.
FIG. 13 illustrates a first embodiment of the present invention.contentIt is a figure for explaining settlement processing of.
FIG. 14 is a diagram showing exchange of user terminal ID information in a content purchase / payment process according to the first embodiment of the present invention.
FIG. 15 is a diagram illustrating a service provider according to the first embodiment of the present invention.contentIt is a figure showing an encryption processing procedure.
FIG. 16 is a diagram illustrating an operation of receiving encrypted content according to the first embodiment of this invention.
FIG. 17 is a configuration diagram of a memory device according to a first embodiment of the present invention.
FIG. 18 shows the first embodiment of the present invention.contentIt is a figure showing the reproduction processing of.
FIG. 19 is a diagram illustrating an example of DCD sharing according to the first embodiment of this invention.
FIG. 20 is a configuration diagram of a memory device according to a second embodiment of the present invention.
FIG. 21 is a diagram showing a connection between a tamper-resistant device and a memory device according to a second embodiment of the present invention.
FIG. 22 is a diagram illustrating exchange of a memory device ID during content purchase settlement processing according to the second embodiment of this invention.
FIG. 23 shows the service provider according to the second embodiment of the present invention.contentIt is a figure showing an encryption processing procedure.
FIG. 24 is a diagram illustrating reception of encrypted content in the user terminal according to the second embodiment of this invention.
FIG. 25 shows a second embodiment of the present invention.contentFIG. 6 is a diagram showing reproduction of a.
[Explanation of symbols]
10 Communication means
15 Memory
20 Interface means
30 DCD acquisition means
40 RRDS generation means
50 Provider location information acquisition means
60 Payment means
70 Decoding means
80 Index storage means
90 Reproduction means
100 Content-related information providing device
110 Attribute information database
120 Service provider information database
200 user terminal
210 Tamper resistant device
211 External interface
212 Memory device
213contentRegenerator
214 decryption module
215 Memory device
216 Index information table
217 Data area
220 Local resolver
221 Index information table
222 data area
223 Memory device interface
230 DCD handler
240 communication processing unit
300 Service Provider
310 Services
320content
400 network

Claims (8)

In a content providing method for providing content to a user,
Acquiring the advertising information of the content, acquiring a content ID included in the advertising information, information of an acquisition source of the content, DCD describing information on the content and available services,
A request that is service request information from a user, a terminal, an operating system, a system profile that is information indicating the level of a function including an application, a user policy that is a condition for a service, and an RRDS that is information obtained by combining the DCD,
From the location information of the service provider held in advance, obtain the location information of the service provider that provides the service corresponding to the request included in the RRDS,
Based on the location information of the service provider, transmit information for purchase settlement processing for content to be purchased to the service provider and a user terminal ID uniquely assigned to the user terminal,
Obtain the encrypted content requested from the service provider based on the user terminal ID, and decrypt the content in the user terminal in a tamper-resistant tamper-resistant device having a configuration that cannot be falsified. Decrypting the encrypted content using a module,
Store the decrypted content,
The storage location information where the decrypted content is stored and the DCD are grouped and recorded in an index table,
When a DCD for reproducing the stored content is input from the user, the index table is searched based on the DCD, and the decoded content is searched based on storage location information corresponding to the DCD. A content providing method characterized by reading and reproducing. In a content providing method for providing content to a user,
Acquiring the advertising information of the content, acquiring a content ID included in the advertising information, information of an acquisition source of the content, DCD describing information on the content and available services,
Between the user terminal and a tamper-resistant memory device connectable to a tamper-resistant device having a configuration in which the content of the user terminal cannot be falsified, perform authentication at the time of connection,
A request that is service request information from a user, a terminal, an operating system, a system profile that is information indicating the level of a function including an application, a user policy that is a condition for a service, and an RRDS that is information obtained by combining the DCD,
From the location information of the service provider held in advance, obtain the location information of the service provider that provides the service corresponding to the request included in the RRDS,
Based on the location information of the service provider, transmit information for purchase and settlement processing for content purchased by the service provider, and a memory device ID uniquely assigned to the memory device,
A decryption module in the memory device connected to a tamper-resistant device having a configuration in which the content in the user terminal cannot be falsified by acquiring the encrypted content requested based on the memory device ID from the service provider. Decrypts the encrypted content using
The storage location information where the decrypted content is stored and the DCD are recorded as a set in an index table,
When a DCD for reproducing the stored content is input from the user, the index table in the memory device is searched based on the DCD, and the decoding is performed based on storage position information corresponding to the DCD. A content providing method, comprising reading and playing back the selected content. A content providing device for providing content to a user,
Communication means for transmitting and receiving content and data via a network,
Interface means for receiving a request from a user, input of DCD describing information on contents and available services, and outputting reproduced content to the user;
A tamper-resistant device having a memory and having a configuration in which data cannot be tampered with;
A DCD that acquires advertising information of a content and acquires a DCD that includes information of a content ID uniquely assigned to each content, information of an acquisition source of the content, information about the content, and available services included in the advertising information. Acquisition means;
A request which is service request information input from a user via the interface means, a system profile which is information indicating a function level including a terminal, an operating system, and an application, a user policy which is a condition for a service, and the DCD are combined. RRDS generation means for generating RRDS which is information,
Provider location information acquisition means for acquiring location information of a service provider that provides a service corresponding to the request based on the RRDS from location information of a service provider stored in advance;
Payment means for transmitting information for purchase payment processing for content purchased by the service provider based on the location information of the service provider, and a user terminal ID uniquely assigned to the user terminal;
A decryption unit that acquires the encrypted content requested from the service provider based on the user terminal ID, decrypts the encrypted content using a decryption module in the tamper-resistant device, and stores the decrypted content;
Index storage means for recording in the index table a set of storage position information in which the decrypted content is stored and the DCD;
When a DCD for reproducing the stored content is input from the user via the interface means, the index table is searched based on the DCD, and based on position information corresponding to the DCD, Playback means for reading and playing back the decrypted content. A content providing device for providing content to a user,
Communication means for transmitting and receiving content and data via a network,
Interface means for receiving a request from a user, input of DCD describing information on contents and available services, and outputting reproduced content to the user;
A tamper-resistant device having a configuration that prevents data tampering,
A memory device having a configuration that disables falsification of data connectable to the tamper-resistant device;
DCD acquisition means for acquiring advertising information of the content, and acquiring a DCD containing information on the content ID, information on the acquisition source of the content, information on the content and available services included in the advertising information;
Authentication means for performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request which is service request information input from a user via the interface means, a system profile which is information indicating a function level including a terminal, an operating system, and an application, a user policy which is a condition for a service, and the DCD are combined. RRDS generation means for generating RRDS which is information,
Provider location information acquisition means for acquiring, from the service provider location information held in advance, location information of a service provider that provides a service corresponding to the request based on the RRDS,
Payment means for transmitting information for purchase and payment processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device,
Obtain the encrypted content requested from the service provider based on the memory device ID, decrypt the content using a decryption module in the memory device connected to the tamper-resistant device in the user terminal, and decrypt the content. Decrypting means for storing the content
An index storage unit configured to record storage position information in which the decrypted content is stored and the DCD as a set in an index table in the memory;
When a DCD for reproducing the stored content is input from the user, the index table is searched based on the DCD, and the decoded content is stored in the memory based on position information corresponding to the DCD. A content providing device comprising: a reproducing unit that reads out from the device and reproduces the content. A content providing program for providing content to a user,
On the computer,
A DCD obtaining step of obtaining advertisement information of the content and obtaining a DCD describing information on a content ID, an acquisition destination of the content, information on the content and available services included in the advertisement information;
An authentication step of performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request, which is service request information input from a user via an interface means, a system profile, which is information indicating a level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and information obtained by combining the DCD. An RRDS generation step of generating an RRDS that is:
A provider location information acquisition step of acquiring location information of a service provider providing a service corresponding to the request based on the RRDS from the location information of the service provider held in advance;
A settlement step of transmitting information for purchase settlement processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device;
Obtain the encrypted content requested from the service provider based on the memory device ID, decrypt the content using a decryption module in the memory device connected to the tamper-resistant device in the user terminal, and decrypt the content. Decrypting the stored content;
An index storing step of combining the storage position information where the decrypted content is stored and the DCD and recording them in an index table in the memory;
When a DCD for reproducing the stored content is input from the user, the index table is searched based on the DCD, and the decrypted content is searched based on storage location information corresponding to the DCD. And a reproducing step of reading and reproducing from the memory device. A content providing program for providing content to a user,
On the computer,
A DCD obtaining step of obtaining advertisement information of the content and obtaining a DCD describing information on a content ID, an acquisition destination of the content, information on the content and available services included in the advertisement information;
An authentication step of performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request, which is service request information input from a user via an interface means, a system profile, which is information indicating a level of a function including a terminal, an operating system, and an application, a user policy, which is a condition for a service, and information obtained by combining the DCD. An RRDS generation step of generating an RRDS that is:
A provider location information acquisition step of acquiring location information of a service provider providing a service corresponding to the request based on the RRDS from the location information of the service provider held in advance;
A settlement step of transmitting information for purchase settlement processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device;
Obtain the encrypted content requested from the service provider based on the memory device ID, decrypt the content using a decryption module in the memory device connected to the tamper-resistant device in the user terminal, and decrypt the content. Decrypting the stored content;
An index storing step of combining the storage position information where the decrypted content is stored and the DCD and recording them in an index table in the memory;
When a DCD for reproducing the stored content is input from the user, the index table is searched based on the DCD, and the decrypted content is retrieved based on the storage location information corresponding to the DCD. And a reproducing step of reading and reproducing from the memory device. A storage medium storing a content providing program for providing content to a user,
On the computer,
A DCD obtaining step of obtaining advertisement information of the content and obtaining a DCD describing information on a content ID, an acquisition destination of the content, information on the content and available services included in the advertisement information;
An authentication step of performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request which is service request information input from a user via the interface means, a system profile which is information indicating a level of a function including a terminal, an operating system, and an application, a user policy which is a condition for a service, and the DCD are combined. An RRDS generating step of generating RRDS that is information;
A provider location information acquisition step of acquiring location information of a service provider that provides a service corresponding to the request based on the RRDS from location information of a service provider held in advance;
A settlement step of transmitting information for purchase settlement processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device;
Obtain the encrypted content requested from the service provider based on the memory device ID, decrypt the content using a decryption module in the memory device connected to the tamper-resistant device in the user terminal, and decrypt the content. Decrypting the stored content;
An index storing step of combining the storage position information where the decrypted content is stored and the DCD and recording them in an index table in the memory;
When a DCD for reproducing the stored content is input from the user, the index table is searched based on the DCD, and the decoded content is retrieved based on storage location information corresponding to the DCD. A storage medium storing a content providing program, which stores a program for executing a reproducing step of reading and reproducing from a memory device. A storage medium storing a content providing program for providing content to a user,
On the computer,
A DCD obtaining step of obtaining advertisement information of the content and obtaining a DCD describing information on a content ID, an acquisition destination of the content, information on the content and available services included in the advertisement information;
An authentication step of performing authentication at the time of connection between the memory device connected to the tamper-resistant device and the user terminal;
A request which is service request information input from a user via the interface means, a system profile which is information indicating a level of a function including a terminal, an operating system, and an application, a user policy which is a condition for a service, and the DCD are combined. An RRDS generating step of generating RRDS that is information;
A provider location information acquisition step of acquiring location information of a service provider providing a service corresponding to the request based on the RRDS from the location information of the service provider held in advance;
A settlement step of transmitting information for purchase settlement processing for content purchased by the service provider based on the location information of the service provider, and a memory device ID uniquely assigned to the memory device;
Obtain the encrypted content requested from the service provider based on the memory device ID, decrypt the content using a decryption module in the memory device connected to the tamper-resistant device in the user terminal, and decrypt the content. Decrypting the stored content;
An index storing step of combining the storage position information where the decrypted content is stored and the DCD and recording them in an index table in the memory;
When the user inputs a DCD for reproducing the stored content, the user refers to the index table based on the DCD, and decodes the decoded content based on the storage location information corresponding to the DCD. A storage medium storing a content providing program, which stores a program for executing a reproducing step of reading and reproducing from a memory device.

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