JP2008271345A - Content browsing control system - Google Patents

Abstract

An object of the present invention is to provide a system capable of controlling browsing of high-quality paid content.
An IC card for storing an advertisement reproduction accumulated time and a content reproduction key received from a DVD player, and a reproduction key issuance request form including information for identifying the advertisement reproduction accumulated time and the content stored in the IC card are created. , A DVD player that transmits to the reproduction key distribution server device, receives the returned content reproduction key, decrypts the encrypted content, and reproduces it, and reproduces the advertisement included in the received reproduction key issue request This is a content browsing system including a reproduction key distribution server device that determines whether or not the accumulated time exceeds the reproduction permission reference time and returns a content reproduction key to the IC card.
[Selection] Figure 1

Description

The present invention relates to a system that permits browsing of contents of a package medium (= DVD).

2. Description of the Related Art Conventionally, in pay content playback and browsing, advertisers sometimes take charge (full amount or a part thereof) when a viewer views an advertisement.

For example, Patent Document 1 discloses a technique for accumulating points by looking at advertisements distributed over a communication line, and similarly paying the points as consideration when using paid content distributed over the communication line. Yes.
JP 2006-178890 A (paragraph 0029-paragraph 0037, FIG. 3)

By the way, in the technique of Patent Document 1, since there is a limit to the line capacity of a communication network that distributes content, for example, if high-image content is to be distributed, a long distribution time is required. is there.
Further, since the content is distributed via the communication network, there is a problem that the content cannot be browsed in a place where the communication environment is not established.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a system capable of controlling browsing of high-quality pay content.

The present invention solves the above problems by the following means. Specifically, the invention of claim 1 is a content browsing system comprising an IC card (100), a DVD player (300) connected via a network, and a reproduction key distribution server device (500), The IC card is an IC card having storage means for storing the accumulated advertisement reproduction time and the content reproduction key received from the DVD player (300), and the DVD player (300) reproduces the advertisement recorded on the DVD. A reproduction time measuring means for measuring time and an input of an instruction to obtain a content reproduction key, and a reproduction including the advertisement reproduction accumulated time stored in the (100) storage means of the IC card and information for identifying the content A key issuance request form is created and transmitted to the reproduction key distribution server device (500). A content reproduction key issuance requesting means for receiving the content reproduction key returned by the reproduction key distribution server device (500) when the permitted time has been exceeded and storing it in the storage means of the IC card (100); Receiving the instruction, the playback key receiving means for acquiring the playback key (591) of the corresponding content from the IC card and the received content playback key are used to decrypt the encrypted content for playback display. The reproduction key distribution server device (500) includes reproduction permission reference time data (593), content reproduction key data (591) associated with the content, Storage means for storing the advertisement re-stored in the storage means of the IC card included in the received reproduction key issue request A server comprising: determination means for determining whether or not the accumulated time exceeds the reproduction permission reference time (593); and reproduction key return means for returning the content reproduction key (591) corresponding to the content identification information to the IC card. It is a content browsing control system characterized by being an apparatus.

Here, when the total time of viewing the advertisement exceeds the reproduction permission reference time, a content reproduction key for reproducing and displaying the encrypted content can be obtained.

According to the invention of claim 2, the IC card (100) has the storage means that the IC card identification information (192), the decryption key information (194) associated with the IC card identification information, and the content received from the DVD player. An IC card having means for storing a reproduction key, receiving a reproduction key request transmitted by a DVD player, decrypting the corresponding encrypted content reproduction key with the decryption key information, and transmitting the decrypted key In the DVD player (300), the reproduction key issuance request means accepts an input for selecting content, and the IC card identification information (192) stored in the storage means of the IC card (100) and the advertisement reproduction cumulative number The time (197) and information for identifying the content reproduction key are transmitted to the reproduction key distribution server device (500), and the advertisement reproduction cumulative time is the content reproduction standard. What is claimed is: 1. A DVD player that receives a content reproduction key returned by the reproduction key distribution server device (500) when the allowable time is exceeded and stores the content reproduction key in a storage unit of the IC card, wherein the reproduction key In the distribution server device (500), the storage means includes a content reproduction permission reference time, a content reproduction key (591) associated with the content identification information, and an encryption key (595) associated with the IC card identification information. ) And the reproduction key return means selects a content reproduction key (591) corresponding to the content identification information included in the received reproduction key issue request from the storage means, and receives the received reproduction key. The encryption key associated with the IC card identification information included in the issuance request is selected from the storage means, and the content is regenerated using this encryption key (595). The key by encrypting a content viewing control system according to claim 1, characterized in that the server device to send back.

According to a third aspect of the present invention, in the reproduction key distribution server device, the reproduction key return means returns a subtraction time, and in the IC card, the cumulative time update means receives a DVD player from the reproduction key distribution server device. The content browsing control system according to claim 1 or 2, wherein the subtraction time is received via the subtraction time, and the subtraction time is subtracted from the advertisement reproduction cumulative time stored in the storage means.

According to the present invention,
(1) When a user views an advertisement recorded on a DVD, a key for decrypting the DVD content is recorded on the IC card, and the user can view the DVD content at any time using the IC card. It becomes.
(2) Once the advertisement is viewed, the content can be browsed repeatedly at a desired location.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a diagram illustrating an outline of a content browsing control system.
The content browsing control system 1 includes an IC card 100, a DVD player 300 connected via a network 900, and a reproduction key distribution server device 500.
The DVD player 300 includes an IC card reader. The DVD 700 used by the DVD player 300 stores advertisements and encrypted content, and the user views the advertisement recorded on the DVD for a certain period of time, thereby obtaining a key for decompressing the encrypted content. It can be obtained.

The IC card 100 is an electronic medium controlled by a computer program. The computer program of the IC card 100 can add functions in, for example, C ++ computer language.

Instead of the IC card 100, an RFID (= IC tag) may be used.

The DVD player 300 is a personal computer that includes a DVD drive device and is controlled by a computer program. The computer program of the DVD player 300 can add functions in, for example, C ++ computer language.

The reproduction key distribution server device 500 is a server computer controlled by a computer program. The computer program of the reproduction key distribution server device 500 may use an existing database management program. The computer program of the reproduction key distribution server apparatus 500 can add functions in, for example, C ++ computer language.

FIG. 2 shows the data format of the DVD 700. Data recorded on the DVD 700 includes at least one content 700a and an advertisement 700b. The content 700a is data including content identification information and a scrambled video (= encrypted video). The advertisement 700b is data including video and audio.

FIG. 3 is a detailed configuration diagram of the DVD player 300. The DVD player 300 includes a CPU 301, a communication unit 302, a DVD reading unit 303, an IC card reader 304, a memory (= storage means) 309, and a dedicated program.

Communication unit 302 is a network connection terminal (for example, a LAN connector). The DVD reading unit 303 is an optical pickup device. The IC card reader 304 is an antenna coil or a contact terminal plate. The memory 309 is a semiconductor memory or a magnetic memory.

The dedicated program includes a reproduction time measuring unit 310, a reproduction key issuing request unit 320, a reproduction key transfer unit 330, a reproduction key receiving unit 340, and a decryption / reproduction unit 350.

The reproduction time measuring means 310 and the reproduction time of the DVD advertisement are measured and transmitted to the IC card 100.

When the reproduction key issuance request unit 320 receives an input of a content reproduction key acquisition instruction from the user, the reproduction key issuance request is read out from the storage unit of the IC card 100 and includes the advertisement reproduction accumulated time and the content identification information. A reproduction key issuance request form is transmitted to the reproduction key distribution server apparatus 500.
The reproduction key distribution server device 500 receives the reproduction key issuance request form, and from the reproduction key issuance request form.

If the advertisement reproduction cumulative time is read and the predetermined time is exceeded, a predetermined content reproduction key is returned to the DVD player 300. Therefore, the reproduction key receiving server 340 returns the predetermined content reproduction key to the reproduction key distribution server device 500. Is recorded in the memory of the IC card.

The DVD player 300 receives an input of a content playback instruction from the user, and acquires the corresponding content playback key 591 from the IC card 100.
The decryption / playback unit 350 uses the content playback key 591 to decrypt and play back the encrypted content recorded on the DVD.

FIG. 4 is a detailed configuration diagram of the IC card 100. The IC card 100 includes a CPU 101, a communication unit 107, a memory 109, and a dedicated program.

The communication unit 107 is an antenna coil or a network connection terminal. The memory 109 is a semiconductor memory or a magnetic memory. The memory 109 stores the advertisement reproduction cumulative time 197.

The dedicated program includes an accumulated time update unit 120 and a reproduction key recording unit 130.

The accumulated time update means 120 adds the advertisement reproduction time when the DVD player 300 reproduces the advertisement recorded on the DVD to the advertisement reproduction accumulated time stored in the memory of the IC card 100, and stores it in the memory of the IC card 100. Update the stored advertisement playback cumulative time.
Alternatively, the accumulated time updating means 120 receives a predetermined amount from the advertisement reproduction accumulated time stored in the memory of the IC card 100 when the content reproduction key 591 is received from the reproduction key distribution server device 500 via the DVD player 300. The time (for example, reproduction permission reference time data 593, details will be described later) is subtracted.

The reproduction key recording unit 130 records the content reproduction key acquired by the DVD player 300 from the reproduction key distribution server device 500 in the storage unit of the IC card 100.

FIG. 5 is a detailed configuration diagram of the reproduction key distribution server device 500. The reproduction key distribution server device 500 includes a CPU 501, a communication unit 502, a memory 509, and a dedicated program.

Communication unit 502 is a network connection terminal (for example, a LAN connector).
The memory 509 stores reproduction permission reference time data 593 and content reproduction key data 591.

The content reproduction key data 591 is associated with the content identification information, and content reproduction key data is prepared for each content. Alternatively, a plurality of contents may correspond with one content reproduction key data.

The reproduction permission reference time data 593 indicates that the content recorded on the DVD can be viewed and the user can view the content on the DVD if the cumulative time that the user has viewed the advertisement recorded on the DVD is longer than the reproduction permission reference time. It shows the standard of advertisement viewing time to do. Specifically, by comparing the advertisement reproduction cumulative time 197 stored in the memory of the IC card with the reproduction permission reference time data 593, if the advertisement reproduction cumulative time 197 exceeds the reproduction permission reference time data 593, the content Reproduction key data 591 is issued.
The reproduction permission reference time data 593 may be different data for each content (= content identification information) or the same.

The dedicated program includes a determination unit 520 and a reproduction key reply unit 530.

The determination unit 520 receives the reproduction key issuance request document transmitted from the DVD player 300 and determines whether or not the advertisement reproduction accumulated time included in the reproduction key issuance request document exceeds the reproduction permission reference time 593. The reproduction key reply means 530 selects and returns the content reproduction key 591 corresponding to the content identification information included in the received reproduction key issue request. At this time, the reproduction key return means 530 returns the reproduction permission reference time 593 (or a predetermined time) at the same time.

FIG. 6 is a diagram for explaining the procedure of the content browsing control process.
(1) The reproduction time measuring means 310 of the DVD player 300 measures the reproduction time of the advertisement recorded on the DVD, and (step S110) the reproduction time transmitted to the IC card 100 and received by the accumulated time update means 120. Is added to the advertisement reproduction accumulated time in the memory of the IC card to update the advertisement reproduction accumulated time. (Step S111)

(2) The reproduction key issuance request unit 320 of the DVD player 300 receives an input of a content reproduction key acquisition instruction from the user, acquires the advertisement accumulated time from the IC card 100, and reproduces including the identification information of the corresponding content. A key issuance request form is created and transmitted to the reproduction key distribution server device 500. (Step S112)

(3) The determination unit 520 of the reproduction key distribution server device 500 determines the reproduction permission criteria recorded in the storage unit of the reproduction key distribution server device 500 in the advertisement reproduction cumulative time included in the reproduction key issue request received from the DVD player. It is determined whether or not the time 593 is exceeded. (Step S113)
(4) If the accumulated advertisement reproduction time exceeds the reproduction permission reference time 593, the reproduction key reply means 530 selects the content reproduction key 591 corresponding to the content identification information included in the reproduction key issuance request document, and the DVD The data is transmitted to the IC card 100 via the player 300. (Step S114)
(5) The reproduction key recording means 130 of the IC card 100 records the content reproduction key 591 sent from the reproduction key distribution server apparatus 100 via the DVD player 300 in the storage means. (Step S115)

(6) The DVD player 300 receives an input of a content playback instruction from the user, and acquires a playback key of the corresponding content from the IC card 100. (Step S116)
(7) The DVD player 300 decrypts the content encrypted by the decryption / reproduction means 350 using the content reproduction key acquired from the IC card 100, and reproduces and displays the content. (Step S117)

(Example)
An embodiment in the case of using encrypted content reproduction key data 591 will be described.

FIG. 7 is a detailed configuration diagram of the IC card 100. The hardware configuration of the IC card 100 is the same as that of FIG.

The memory 109 stores advertisement reproduction accumulated time 197, IC card identification information 192, and decryption key information 194. The decryption key information 194 is information associated with the IC card identification information.

The configuration of the dedicated program is the same as the configuration of the dedicated program in FIG.
The accumulated time update unit 120 receives the accumulated time transmitted by the DVD player 300 and records the IC card identification information 192 and the advertisement reproduction accumulated time 197 in the memory 109.
The reproduction key transmission unit 140 decrypts the encrypted content reproduction key 591 with the decryption key information 194 and transmits it to the DVD player 300. The functions of the other means of the dedicated program are the same as the functions of the means of FIG.

The detailed configuration of the DVD player 300 is the same as the detailed configuration of FIG. (Not shown)

When the reproduction key issuance request unit 320 of the dedicated program accepts the input of the content reproduction key acquisition instruction from the user, it acquires the IC card identification information 192 and the advertisement reproduction accumulated time 197 from the IC card 100, and the identification information of the content to be reproduced Is generated and transmitted to the reproduction key distribution server device 500.

The functions of the other means of the dedicated program are the same as the functions of the means of FIG.

FIG. 8 is a detailed configuration diagram of the reproduction key distribution server device 500.
The hardware configuration of the reproduction key distribution server device 500 is the same as the hardware configuration of FIG.
The memory 509 stores reproduction permission reference time data 593, content reproduction key data 591, and encryption key data 595. The encryption key data 595 is data associated with the IC card identification information.

The reproduction key reply means 530 of the dedicated program selects the content reproduction key 591 corresponding to the content identification information of the reproduction key issuance request and the encryption key 595 associated with the IC card identification information, and encrypts the content The reproduction key is encrypted and returned to the DVD recorder 300.

The functions of the other means of the dedicated program are the same as the functions of the means of FIG.

In this way, when the content reproduction key 591 stored in the reproduction key distribution server device 500 is transmitted to the IC card 100 attached to the DVD player 300, the content reproduction key 591 is encrypted, so that the other person It is possible to prevent the content reproduction key 591 from being stolen.

As explained in detail above, according to the present invention,
(1) When a user views an advertisement recorded on a DVD, a key for decrypting the DVD content is recorded on the IC card, and the user can view the DVD content at any time using the IC card. It became.
(2) Once the advertisement is viewed, the content can be browsed repeatedly at a desired location.

The figure explaining the outline of the content browsing control system DVD data format Detailed configuration diagram of DVD player 300 Detailed configuration diagram of the IC card 100 Detailed configuration diagram of reproduction key distribution server device 500 The figure explaining the procedure of content browsing control processing (Example) Detailed configuration diagram of the IC card 100 (Example) Detailed configuration diagram of reproduction key distribution server device 500

Explanation of symbols

1 Content Browsing Control System 100 IC Card 120 Cumulative Time Update Unit 130 Playback Key Recording Unit 140 Playback Key Reply Unit 192 IC Card Identification Information 194 Decryption Key Information 197 Advertisement Playback Accumulation Time 300 DVD Player 310 Playback Time Measurement Unit 320 Playback Key Issue Request Means 340 Reproduction key receiving means 350 Decryption reproduction means 500 Reproduction key distribution server device 520 Determination means 530 Reproduction key reply means 591 Content reproduction key data 593 Reproduction permission reference time data 700 DVD
700a content 700b advertisement 900 network

Claims (3)

A content browsing system comprising an IC card, a DVD player connected via a network, and a reproduction key distribution server device,
The IC card is
An IC card comprising storage means for storing an advertisement reproduction accumulated time and a content reproduction key received from a DVD player,
The DVD player
Playback time measuring means for measuring the playback time of an advertisement recorded on a DVD;
Upon receipt of an input instruction for obtaining a content reproduction key, a reproduction key issuance request form including an advertisement reproduction accumulated time stored in the storage means of the IC card and information for identifying the content is created, and the reproduction key distribution is performed. A content reproduction key that is transmitted to the server device, receives the content reproduction key returned by the reproduction key distribution server device when the accumulated advertisement reproduction time exceeds the content reproduction permission time, and stores the content reproduction key in the storage unit of the IC card Issuance request means;
A reproduction key receiving means for receiving an input of a content reproduction instruction and acquiring a reproduction key of the corresponding content from the IC card;
Decryption / playback means for decrypting and playing back the encrypted content using the received content playback key;
A DVD player comprising:
The reproduction key distribution server device
Playback permission reference time data,
Content playback key data associated with the content;
Storage means for storing
Determining means for determining whether or not the advertisement reproduction accumulated time stored in the storage means of the IC card included in the received reproduction key issue request exceeds a reproduction permission reference time;
A reproduction key return means for returning a content reproduction key corresponding to the content identification information to the IC card;
A content browsing control system, characterized by being a server device. The IC card is
The storage means stores IC card identification information, decryption key information associated with the IC card identification information, and a content reproduction key received from a DVD player,
An IC card comprising means for receiving a reproduction key request transmitted by a DVD player, decrypting a corresponding encrypted content reproduction key with decryption key information, and transmitting the decrypted content reproduction key.
The DVD player
The reproduction key issuance request means accepts an input for selecting content, and the IC card identification information, advertisement reproduction accumulated time, and information for identifying the content stored in the storage means of the IC card are stored in the reproduction key distribution server. The content reproduction key transmitted to the apparatus and returned by the reproduction key distribution server apparatus when the accumulated advertisement reproduction time exceeds the content reproduction permission reference time is received and stored in the storage means of the IC card. A DVD player,
The reproduction key distribution server device
The storage means stores a content reproduction permission reference time, a content reproduction key associated with the content identification information, and an encryption key associated with the IC card identification information;
The reproduction key reply means selects from the storage means a content reproduction key corresponding to the content identification information included in the received reproduction key issuance request document, and the IC card identification information included in the received reproduction key issuance request document 2. The content browsing according to claim 1, wherein the server is a server device that selects an encryption key associated with the storage means from the storage unit, encrypts the content reproduction key using the encryption key, and sends back the content reproduction key. Control system. In the reproduction key distribution server device,
The reproduction key reply means returns the subtraction time,
In the IC card,
The cumulative time update means receives the subtraction time from the reproduction key distribution server device via a DVD player, and subtracts the subtraction time from the advertisement reproduction cumulative time stored in the storage means. The content browsing control system according to claim 1 or 2.

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