JP2002288519A - Contents distribution method and device, contents distribution program, and storage medium for storing contents distribution program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To distribute an advertisement service relating to a contents service without separating the contents service when a user enjoys the service relating to the contents. SOLUTION: The link information and the access information to the advertisement service corresponding to each user of contents, and the application information are inseparatably added to a DCD representing the contents, whereby the user can not utilize the contents service without receiving the advertisement service in enjoying the service relating to the contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention 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 communication network such as the Internet and an information transmitting medium such as a magazine and a television. The present invention relates to a content providing method and apparatus for providing content and related information and services to content users, a content providing program, and a storage medium storing the content providing program.

[0002]

2. Description of the Related Art Today, services such as music and video are provided to users on the Internet and the like. These include, for example, music content data and information related thereto, such as WWW (World Wi-Fi).
de Web) pages, and users often download and use them as needed. In addition, there has been a form in which a content such as an analog photograph is provided to a user through an information transmission medium such as a magazine. In any of the above two information providing modes, it is difficult for a user to obtain a content data for a certain purpose and then use a service having another function related to the content data.
For example, a user who first wants to "listen to" a musician's music, searches for a service provider that provides the content data of the music by some means such as a search engine, downloads the content data from there, and downloads the music. If you want another service, such as "I want to see the video clip of this song", you can find the service provider that provides the video clip video content data again by some means. Occurs.

[0003] Alternatively, it is difficult to provide a service using a different information transmission medium, for example, in a case where a musician of a musician obtained from a magazine or the like is desired to be obtained as a digital content for listening to the music of the musician.

[0004] In order to solve these problems, unique identification information (content ID) is assigned to the content, the content ID is distributed together with the content data, and the user wants to obtain information related to the content data. Has proposed a method in which a user can enjoy contents and information and services related to the contents in accordance with a policy set by the user without concern for the state of his or her terminal or network.

[0005] In this method, information of a content data acquisition source (service provider) is distributed through a network in a data format (DCD) in which information relating to sound and available services are described, and a DCD for acquiring and analyzing the DCD is provided.
A D-handler is provided on a user terminal, and a content-related information providing device that provides information on contents and service provider information to the user terminal provides information in response to an inquiry from a user. In order for the user to obtain necessary information, the DCD handler on the user terminal receives a service request from the user, and stores the stored DCD, user information (user policy), and usage environment conditions (system profile) as contents. By transmitting the information to the related information providing device, the content related information providing device is inquired of the content related information and the available service provider information, and the service provider transmits the content based on the service provider information transmitted from the content related information providing device. It acquires data, performs necessary processing on the content data, and provides it to the user.

[0006]

However, the above-described method of providing content data to a user terminal by a DCD handler is based on the problem that when a pay content is distributed, a sponsor of the distribution service adds an advertisement to the content. Therefore, it is difficult to make the distribution service free of charge. For example, the above D
In the method using the CD handler, a service relating to the content is provided using a data set such as attribute information of the content called DCD as the data representing the content. When the service is provided to the content user, the DCD representing the content and the advertisement are provided. Since the services are separated, the content user can receive the content service without receiving the advertisement service, and there is a problem that the advertiser cannot provide the advertisement service to the user.

[0007] The present invention has been made in view of the above points, and when a user enjoys a service related to a content, it is possible to provide an advertising service related to the content service without separating the content service. It is an object to provide a content providing method and apparatus, a content providing program, and a storage medium storing the content providing program.

[0008]

FIG. 1 is a diagram for explaining the principle of the present invention.

According to the present invention (claim 1), in a content providing method for providing a user with information and a service for content and the content data, the user is authenticated by an arbitrary authentication method (step 1), and the content ID The digital signature attached to the DCD with advertisement obtained by adding the advertisement information to the DCD which is a data set such as attribute information of the content is verified by a verification method corresponding to the digital signature method, and the content of the DCD with advertisement is valid. Is confirmed (step 2), and a service request for DCD with advertisement is obtained from the user (step 3),
Data is transmitted / received to / from the content-related information providing device that provides the content-related information, service-related information on the content is acquired based on the service request (step 4), and the service-related information is presented to the user (step 5). And transmitting the service-related information selected by the user, the DCD with advertisement, and the user information on the user to the advertisement provider device (step 6), and
The advertisement information described on the CD and the user information to which the digital signature of the advertisement provider is given are acquired (Step 7),
The advertisement information described in the DCD is presented to the user (step 8), and the user information with the digital signature of the advertisement provider is verified by the digital signature method (step 9). The service request for the assigned user information and content is transmitted to the service provider device (step 10), and the content service acquired from the service provider device is provided to the user (step 11).

FIG. 2 is a diagram showing the principle of the present invention.

The present invention (Claim 2) is a content providing apparatus for providing a user with content and information or service for the content data, wherein the user authentication means 101 performs user authentication by an arbitrary authentication method. The digital signature attached to the DCD with advertisement in which the advertisement information is added to the DCD, which is a data set such as the content ID and the attribute information of the content, is verified by a verification method corresponding to the digital signature method. Data transmission / reception with a DCD verification unit 102 for confirming that the content is relevant, a service request obtaining unit 103 for obtaining a service request for a DCD with an advertisement from a user, and a content-related information providing apparatus for providing content-related information. To provide service-related information about the content based on the service request. And transmitting the service-related information presenting means 103 for presenting the service-related information to the user, the service-related information selected by the user, the DCD with advertisement, and the user information on the user to the advertisement provider device. Advertising information providing means 104 for obtaining, from the device, the advertising information described in the DCD and the user information to which the digital signature of the advertisement provider is attached, and presenting the advertising information described in the DCD to the user; User information verification means 105 for verifying the user information to which the digital signature of the provider has been added, and a service request for the user information and the content to which the digital signature of the advertisement provider has been added to the service provider device, and providing the service Content providing means 106 for providing the user with the content service acquired from the user device. The present invention (claim 3)
Is a content providing program for providing a user with information and services related to the content and the content data. The user authentication process performs user authentication by an arbitrary authentication method, and data such as a content ID and content attribute information. The digital signature attached to the DCD with advertisement obtained by adding the advertisement information to the DCD which is a set,
A DCD verification process for verifying with a verification method corresponding to the digital signature method and confirming that the content of the DCD with advertisement is valid, a service request obtaining process for obtaining a service request for the DCD with advertisement from the user, and A service-related information presentation process of transmitting and receiving data to and from a content-related information providing device that provides content-related information, acquiring service-related information about content based on a service request, and presenting the service-related information to a user; The service-related information selected by the user, the DCD with advertisement, and the user information related to the user are transmitted to the advertisement provider device, and the advertisement provider device transmits the DCD.
D, an advertisement information providing process of acquiring the user information to which the digital signature of the advertisement provider is given and the advertisement information described in the DCD to the user; A user information verification process for verifying the digital signature-attached user information by the digital signature method, and transmitting a service request for the digital signature-added user information and content of the advertisement provider to the service provider device; A content providing process for providing a user with a content service acquired from the service provider device.

[0012] The present invention (claim 4) is a storage medium storing a content providing program for providing a user with content and information or service for the content data, and performs user authentication by an arbitrary authentication method. A user authentication process and a digital signature attached to the DCD with advertisement obtained by adding advertisement information to the DCD, which is a data set such as content ID and content attribute information, are verified by a verification method corresponding to the digital signature method. D to confirm that the contents of the attached DCD are valid
A CD verification process, a service request acquisition process of acquiring a service request for a DCD with advertisement from a user,
A service-related information presentation process for transmitting / receiving data to / from a content-related information providing apparatus for providing content-related information, acquiring service-related information on content based on a service request, and presenting the service-related information to a user; Transmits the service-related information, the DCD with advertisement, and the user information on the user selected by the user to the advertisement provider device, and the advertisement information described in the DCD and the digital signature of the advertisement provider are given from the advertisement provider device. An advertisement information providing process of acquiring the user information and presenting the advertisement information described in the DCD to the user;
A user information verification process for verifying the user information to which the digital signature of the advertisement provider has been given by the digital signature method, and a service request for the user information and content to which the digital signature of the advertisement provider has been provided to the service provider device. Transmitting a content service obtained from the service provider device to the user.

In the present invention, the DCD representing the content is
Add link information, access information, application information, etc. to the advertising service according to each content user in an inseparable format using signature technology etc., and when users enjoy services related to content, be sure to This is realized by making the content service unavailable if the user does not receive the advertisement service. Thus, when the content user enjoys the content service, the DCD
The service provider checks whether the user has received the advertising service provided in an inseparable format from the user (receives the signal receiving the advertising service from the user), and the user receives the advertising service. Only in this case, the content service can be provided to the user.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to the following description, terms used in the following description will be explained.

The "contents" include, for example, a certain music (not a technical meaning such as a data format) such as "song XX", "TV drama △△", "game XX". Refers to individual literary works, such as TV dramas and certain games, that are specified in an interval.

"Content data" is data obtained by encoding content so that it can be handled on a computer.
More specifically, codes such as “song XX encoded by PCM”, “TV drama △△ encoded by MPEG2”, and “game program XX that runs on a specific game machine” Information.

"Content ID" refers to a number that uniquely indicates a content.

"Service" refers to the function of processing performed on content data. Specifically, it refers to individual functions such as content delivery and format conversion.

"Service provider" refers to a server that provides services.

The "content information" is a set of content data itself of a certain content, various information related to the content, service information that can be provided for the content, and the like.

The "content information DB" is a database in which content data of various file formats and encoding formats for each content, various information related to the content, descriptions of provided services, and the like are stored. The outline is shown in FIG.

"Request" is service request information presented by a user, and is described in a service description method. Specifically, it is "want to see" or "want to listen".

The "user policy" is information specified by a user and representing a condition for restricting a 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.

An “application” is software or hardware that runs on a user terminal and is used to receive a service, or both.

The "system profile" is information indicating the level of a function 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.

"DCD (distributed content descriptor)
r: distribution content identifier)] is data including a content ID, 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. . First, a system on which the present invention is based will be described.

FIG. 4 shows an outline of a configuration of a content providing system which is a premise in one embodiment of the present invention.

The content providing system shown in FIG.
It is composed of a content-related information providing device 100 which is a server to which RDS is input, a user terminal 200, and a service provider 300.

It is assumed that the user terminal 200 has a DCD obtained in some form such as manual input by the user 10 or download from the WWW (World Wide Web). A user who wishes to deliver the content data represented by the content ID described in the DCD requests the request.

The DCD handler 230 is connected to the user terminal 20
This is a mechanism that operates on 0, 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.

The content-related information providing apparatus 100 has 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,
The service provider information that is the delivery source of the content data is obtained. 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. User terminal 20
When the zero DCD handler 230 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 10. DCD handler 230
Waits for an input from the user 10, performs the same processing again in response thereto, and inquires of the content-related information providing apparatus 100 about information. Or service provider 30
If 0 is uniquely specified, the application corresponding to the 0 is activated and necessary information such as content attribute information is passed to the application.

The application makes a service request to the service provider 300 specified above,
The service provider 300 distributes content data to an application in response to a service request. This allows the user to receive the content data from the service provider through the application.

FIG. 5 is a sequence chart showing the outline of the operation of the content providing system which is the premise of the embodiment of the present invention.

Step 101) The user terminal 200
The input of the DCD and the request from the user 10 is received. In addition, regarding DCD, besides the user 10, WW
It can also be obtained by downloading from W or the like.

Step 102) D of the user terminal 200
The RRDS is set by the CD handler 230 by combining the DCD, the request, the user policy, and the system profile.
Generate

Step 103) DCD handler 230
RRDS generated by the content-related information providing device 1
Send to 00.

Step 104) The content-related information providing apparatus 100 searches the attribute information database 110 for attribute information corresponding to the DCD in the RRDS, obtains service provider information of the delivery source of the content data, and issues a content distribution request. A service provider that satisfies the conditions described in the information and the user policy and the system profile is searched.

Step 105) The search result is resolved together with the content attribute information as a resolve result by the user terminal 20.
Send to 0.

Step 106) The user terminal 200 presents the result of the resolve to the user 10, and when the DCD or the request is received again from the user, the same processing as the processing from the above-mentioned step 101 is performed. If the service provider is uniquely determined in step 104, the application corresponding to the service provider is started.

Step 107) The application in the user terminal 200 issues a service request to the specified service provider 300.

Step 108) Service provider 3
00 transmits the content data corresponding to the service request to the user terminal 200.

As a result, the user terminal 200 can present the content data to the user 10.

Hereinafter, the user terminal in the above system will be mainly described. Note that, in the configuration of FIG. 5 described above, the user terminal 200
RR, which is a set of DCD and request
Although an example of transmitting a DS is described, in the following description,
The description will be given on the assumption that the user terminal 200 obtains a request from a content user, transmits the content ID included in the request to the content-related information providing apparatus 100 in the DCD.

In the following, a system for providing a content provided with an electronic advertisement to a user will be described.

In the present invention, a content is provided by giving an electronic advertisement which is inseparable from the content to the user. For example, a signature of a content provider is given to a combination of advertising data and content data,
On the user terminal side, the digital signature is verified by a verification method corresponding to the digital signature method, and the advertisement data and the content data are not valid by the verification, that is,
If it is determined that erasure or tampering has been performed, the content data is not reproduced. Further, when it is found by verification that the advertisement data is valid advertisement data and content data, it can be realized by providing a mechanism that enables reproduction of the content data. for that reason,
The user terminal 200 requests advertisement information from the advertisement provider using the DCD which is a data set storing the content ID and its attribute, acquires the advertisement information and the signed ID of the advertisement provider, and Requesting the content data using the content.

FIG. 6 shows the configuration of a content providing system according to an embodiment of the present invention. The system shown in FIG. 1 includes a content-related information providing apparatus 100, a user terminal 200, a service provider 300, and an advertisement provider apparatus 4.
00 and a network (Internet) 500 connecting them.

The processing will be described below based on the configuration shown in FIG.

The DCD has the configuration shown in FIG. The DCD shown in the figure is called a DCD with advertisement, and information about an advertisement service (access information to an advertisement provider, an expiration date, and the like, hereinafter referred to as advertisement-related information) is added to the DCD shown in the configuration of FIG. Is described, and a digital signature of an advertisement provider or a service provider is given so that this part cannot be removed. Also,
In the system of the present invention, it is assumed that the content-related information providing apparatus 100 does not resolve (provide the content-related information) the DCD to which the advertisement provider or the service provider is not signed.

The operation of the system shown in FIG. 6 will be described.

FIG. 8 is a diagram showing the D in one embodiment of the present invention.
It is a flowchart of a process inside a CD handler.

Step 201) The content user
Interaction with the DCD handler 230 (user terminal) is performed, and first, user authentication is performed. As the authentication method, any authentication method such as authentication using user biometrics information, such as authentication using a password, can be used.

Step 202) DCD handler 230
Obtains a request from a content user and determines a service request for DCD as shown in FIG. Step 203) Here, the DCD handler 230
The digital signature of the DCD (the signature of the advertisement provider or the service provider) is checked to confirm the validity of the signature.

Step 204) If the verification result is correct, proceed to Step 206;
Move to step 205.

Step 205) As a result of the verification, the content user is notified that the DCD is incorrect.

Step 206) Next, the expiration date of the advertisement-related information added to the DCD is checked. If the DCD is valid and within the expiration date, the process proceeds to step 208. Moves to step 207.

Step 207) In addition to notifying that the validity period of the DCD has expired, the fact that the content service cannot be used is presented to the content user, and the user is prompted to obtain a new DCD. As a method for obtaining a new DCD, an existing method is used.

Step 208) DCD handler 230
Transmits the service ID, DCD, and user ID of the determined content to the advertisement provider device 400.

Step 209) DCD handler 230
Waits until receiving the signed user ID and the advertisement information from the advertisement provider device 400. Here, the advertisement provider device 400 selects advertisement information corresponding to the user from the DCD, the service ID, and the user ID received from the DCD handler 230, and converts the user ID received from the DCD handler 230 into the advertisement user. Digitally sign, and as a user ID with digital signature,
Reply to handler 230. The advertisement provider device 400
Will be described later.

Step 210) DCD handler 230
Receives the signed user ID and the advertisement information from the advertisement provider device 400.

Step 211) DCD handler 230
Presents the received advertisement information to the content user using an application or the like in the user terminal 200. Step 212) Then, the DCD handler 230
The service request for the content and the user ID with the digital signature received from the advertisement provider device 400 are transmitted to the service provider 300.

Step 213) In these processes,
The DCD handler 230 checks the user ID of the content user and the user ID with the digital signature one by one so that there is no change in the signed user ID.

Step 214) If the two user IDs do not match, the process is interrupted and terminated there.

Step 215) Service Provider 3
00 is the signed user I received from the user terminal 200
The validity period of D and the validity of the signature are checked, and if the user ID with digital signature is valid and within the validity period, the content service is provided to the content user.

Next, the processing of the advertisement provider device will be described.

FIG. 9 is a flowchart of the processing inside the advertisement provider device according to one embodiment of the present invention.

Step 301) DCD handler 230
From the DCD and the service ID.

Step 302) Advertisement information is selected from the user ID, DCD and service ID.

Step 303) Digitally sign the user ID to generate a signed user ID.

Step 304) The advertising information and the signed user ID are returned to the DCD handler 230.

Here, a general transaction ID can also be given to the digitally signed user ID in order to prevent the content user from reusing the digitally signed user ID.

[0071]

Embodiments of the present invention will be described below with reference to the drawings.

In the following embodiment, a content providing system using a game machine will be described.

FIG. 10 is a diagram showing an example in which the game device in one embodiment of the present invention is a user terminal.

A content providing system using a game device includes a game device 200, a content data viewing device 600 such as a PC or a TV, a content-related information providing device 100, a service providing device (provider) 300, and a network connecting them. (the Internet)
500.

The game device 200 includes a user interface unit 210, a game program 220, a DCD handler 230, and a communication processing unit 240.

The user exchanges data with the DCD handler 230 via the user interface unit 210 of the game device 200 to perform authentication.

Next, the DCD handler 230 acquires a request from the user via the user interface unit 210 and determines a service request for DCD. Here, the DCD handler 230 performs the digital signature of the DCD (the signature of the advertisement provider or the service provider).
And verify the signature. Next, the expiration date of the advertisement-related information added to the DCD is checked,
Is valid and within the validity period, the DCD handler 23
0 transmits the service ID, DCD, and user ID of the determined game to the advertisement provider device 400.

The DCD handler 230 waits until receiving the signed user ID and the advertisement information from the advertisement provider device 400. Here, the advertisement provider device 400 selects advertisement information corresponding to the user from the DCD received from the user and the service ID of the game, and the advertisement provider digitally signs the user ID received from the user. Then, a reply is sent to the DCD handler 230 of the game device 200 together with the advertisement information as a user ID with a digital signature.

The DCD handler 230 receives the signed user ID and the advertisement information from the advertisement provider device 400, and presents the received advertisement information to the user using an application or the like in the game device 200.

Thereafter, the DCD handler 230 transmits a service request relating to the game and the user ID with the digital signature received from the advertisement provider device 400 to the service provider 300.

In the course of these processes, if the verification of the validity of the signed user ID fails, the process is interrupted and terminated.

The service provider 300 checks the validity period of the signed user ID received from the DCD handler 230 of the game device 200 and the validity of the signature, and if the digital signed user ID is valid and within the valid period, the service provider 300 Provide the target game to the user.

Thus, the game device 200 receives the advertisement service provided in a format inseparable from the DCD with the advertisement information obtained from the advertisement provider device 400, and only receives the advertisement service, the service provider 30
From 0, the game will be offered.

Note that it is possible to construct the processing of the DCD handler 230 as a program and install it in the CPU in the user terminal or distribute it via a network.

Further, the constructed program is stored in a portable storage medium such as a hard disk, a floppy (registered trademark) disk, or a CD-ROM in the user terminal, and is installed when the present invention is carried out. The present invention can be easily realized.

The present invention is not limited to the above embodiment, but can be variously modified and applied within the scope of the claims.

[0087]

As described above, according to the present invention, in a service in which an advertisement is presented to a content user (user) to provide paid content free of charge, a general content providing system includes: It is possible to make the separated content distribution service and advertisement providing service inseparable. That is, in order to receive the content service, the content user must always obtain the advertisement information.

Further, according to the present invention, when a content user distributes an advertisement, when the advertisement is distributed to the content user, information relating to the content service desired by the content user is transmitted to the advertisement provider. From doing
An advertisement according to the taste of the content user can be provided.

[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 an example of a content information DB according to an embodiment of the present invention.

FIG. 4 is a configuration diagram of a content providing system according to an embodiment of the present invention.

FIG. 5 is a sequence chart showing an outline of an operation of the content providing system according to the embodiment of the present invention.

FIG. 6 is a configuration diagram of a content providing system according to an embodiment of the present invention.

FIG. 7 is an example of a DCD with advertisement according to an embodiment of the present invention.

FIG. 8 is a flowchart of a process inside the DCD handler according to the embodiment of the present invention.

FIG. 9 is a flowchart of a process inside the advertisement provider device according to the embodiment of the present invention.

FIG. 10 is a diagram showing an example in which a game device is a user terminal in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 User 100 Content-related information provision apparatus 101 User authentication means 102 Service request acquisition means 103 Service-related information presentation means 104 Advertising information provision means 105 User information verification means 106 Content provision means 110 Attribute information output 110 120 Service provider information output 200 User terminal , Game machine 210 user interface unit 220 game program 230 DCD handler 240 communication processing unit 300 service provider 400 advertisement provider device 500 Internet 600 PC / TV

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Tadashi Nakanishi 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Noboru Sonehara 2-3-2 Otemachi, Chiyoda-ku, Tokyo No. 1 Nippon Telegraph and Telephone Corporation F-term (reference) 5B085 BG07

Claims (4)

[Claims] 1. A content providing method for providing a user with information and a service for the content and the content data, wherein the user is authenticated by an arbitrary authentication method, and a data set such as a content ID and content attribute information is provided. The digital signature attached to the DCD with advertisement in which the advertising information is added to the DCD is verified by a verification method corresponding to the digital signature, the content of the DCD with advertisement is verified to be valid, and Obtaining a service request for the DCD with advertisement, transmitting the service request to a content-related information providing device that provides content-related information, receiving service-related information on content corresponding to the service request, To send the service related information selected by the user and The advertisement-added DCD and user information about the user are transmitted to an advertisement provider device, and the advertisement information assigned to the DCD and the user information to which the digital signature of the advertisement provider is attached are acquired from the advertisement provider device. Presenting the advertisement information attached to the DCD to the user; verifying the user information to which the digital signature of the advertisement provider has been given based on the method of performing the digital signature; A content providing method, comprising transmitting a service request for user information and content to which a digital signature has been added to a service provider device, and providing the content service acquired from the service provider device to the user. 2. A content providing apparatus for providing a user with content and information on the content data, and a user authentication unit for authenticating the user by an arbitrary authentication method, a content ID and an attribute of the content. The digital signature attached to the DCD with advertisement obtained by adding the advertisement information to the DCD, which is a data set of information or the like, is verified by a verification method corresponding to the digital signature method, and the content of the DCD with advertisement is valid. DCD verification means for confirming that the service request is obtained from the user, a service request obtaining means for obtaining a service request for the DCD with advertisement, and data transmission / reception to / from a content-related information providing apparatus for providing content-related information. Obtain service-related information on the content based on the request, and Service-related information presenting means for presenting the service-related information to the user; transmitting the service-related information selected by the user, the DCD with advertisement, and user information about the user to an advertisement provider device; From the advertisement information described in the DCD and the user information to which the digital signature of the advertisement provider is added, and an advertisement information providing means for presenting the advertisement information described in the DCD to the user; User information verifying means for verifying the digital information of the advertisement provider with the digital signature attached by the digital signature method; and a service request for the user information and the content of the advertisement provider with the digital signature. Transmit to the service provider device and provide the user with the content service acquired from the service provider device A content providing device, comprising: 3. A content providing program for providing a user with information and service for content and the content data, a user authentication process for authenticating the user by an arbitrary authentication method, a content ID and an attribute of the content. The digital signature attached to the DCD with advertisement in which the advertisement information is added to the DCD which is a data set of information and the like is verified by a verification method corresponding to the digital signature method, and it is confirmed that the DCD with advertisement is valid. A DCD verification process for performing the service request, a service request obtaining process for obtaining a service request for the DCD with the advertisement from the user, and data transmission / reception with a content-related information providing apparatus for providing content-related information. Service-related information on content based on A service-related information presenting process of presenting the service-related information to the user; transmitting the service-related information selected by the user, the DCD with advertisement, and user information about the user to an advertisement provider device; An advertisement information providing process of acquiring, from a provider device, advertisement information described in the DCD and user information to which a digital signature of an advertisement provider is attached, and presenting the advertisement information described in the DCD to the user; A user information verification process for verifying the digital information of the advertisement provider by using the digital signature method, and providing a service request for the user information and the content of the advertisement provider with the digital signature. Content service acquired from the service provider device. A content providing process for providing to a user. 4. A storage medium storing a content providing program for providing content and information or service for the content data to a user, comprising: a user authentication process for authenticating the user by an arbitrary authentication method; The digital signature attached to the DCD with advertisement in which the advertisement information is added to the DCD which is a data set such as ID and content attribute information is verified by a verification method corresponding to the digital signature method. A DCD verification process for confirming that the user is the user, a service request obtaining process for obtaining a service request for the DCD with advertisement from the user, and transmitting and receiving data to and from a content-related information providing apparatus that provides content-related information. The content based on the service request. A service-related information presentation process for acquiring service-related information and presenting the service-related information to the user; and providing the service-related information selected by the user, the DCD with advertisement, and user information about the user to an advertisement provider device. Transmitting, acquiring, from the advertisement provider device, the advertisement information described in the DC and the user information to which the digital signature of the advertisement provider is attached, and presents the advertisement information described in the DCD to the user; An advertisement information providing process; a user information verifying process for verifying the digital information of the advertisement provider by using the digital signature method; and a user information and a content of the advertisement provider with the digital signature. The service request is transmitted to the service provider device, and the content acquired from the service provider device is transmitted. A content providing process for providing a content service to the user.