JP2002373216A - License trading mediation method and license management device - Google Patents

Abstract

(57) [Summary] The present invention provides license discount information and additional information to a person who has sold a license or a person who has purchased a license, thereby facilitating the buying and selling of licenses and obtaining licenses in the market. SOLUTION: A license server 101 which manages licenses and additional information, a license transfer device 103 which extracts licenses from a recording medium A105, accumulates the licenses, records discount information on a recording medium A105, and moves the discount information to a recording medium B107. Is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a license management apparatus and a license management method for mediating the purchase and sale of a license for releasing the use restriction of use-restricted contents.

[0002]

2. Description of the Related Art In recent years, there has been proposed a system for securely charging a user of a digital content while protecting the copyright of a creator of the digital content, and for reusing and re-editing the digital content. ing. Details of this system are disclosed in Japanese Patent Application Laid-Open No. 2000-113066.

[0003] In addition, in order to copy or distribute contents while protecting the persons who have the right to the contents, the contents are separated from the right to use the contents (hereinafter referred to as "license"). There are license delegation systems that sell licenses from authors or license holders to others. Details of this system are disclosed in Japanese Patent Application Laid-Open No. H11-328033.

[0004]

When the content and the license of the content are separately distributed, it is conceivable to conduct a business of collecting and reselling the once sold license as in the case of the current second-hand dealer.

However, according to the prior art, once a license has been sold, it is not possible to grasp and manage the subsequent movement of the license. Therefore, once the sold license is distributed again, there arises a problem that the number of sold licenses sold by copyright holders and the like decreases.

Further, there is no means for confirming whether a proper delegation has been made by a license delegation device used for delegating a license from a license owner to a consumer. Therefore, by using unauthorized devices, etc., when transferring the license, the license is stolen, tampered with,
Problems such as privacy leaks occur.

[0007] It is an object of the present invention to provide a license trading mediation method and a license management device capable of promoting the distribution of licenses in the market.

[0008]

According to the present invention, a license is read from a first recording medium used by a first user, and the first user purchases another license on the first recording medium. And additional information relating to other contents issued by an administrator who manages the license.

Alternatively, according to the present invention, a license is read from a first recording medium used by a first user, and is read to a second recording medium used by a second user together with the license.
It writes discount information that can be used when the second user purchases another license, and additional information on other content issued by an administrator who manages the license.

[0010] Alternatively, according to the present invention, correspondence information between a type of content and a royalty amount is stored, movement information of a license moved by an intermediary is acquired, and based on the movement information and the correspondence information, Calculate royalties.

[0011]

FIG. 1 is a system configuration diagram of a license management system according to an embodiment of the present invention.

The license management system (content distribution management system) includes a license server 101 used by the license management company 100, a recording medium A105 used by the owner A105 (content user A), a reseller 102 (license transfer agent) ) Includes a license transfer device 103 and a recording medium B107 used by an owner B106 (content user B).

The license server 101 and the license transfer device 103 include an arithmetic processing device (CPU and the like), a storage device (main memory, a hard disk device and the like), and a communication control device. Further, the license server 101 and the license transfer device 103 may include a display device, an input device, and the like. Recording medium A105 and recording medium B107
(CD-ROM, DVD-ROM, semiconductor memory, etc.)
May include an arithmetic processing device, a communication control device, a display device, an input device, and the like. Further, the recording medium A105 and the recording medium B107 may record only the license, or may record the license and the content. The recording medium A105 and the recording medium B107 can use the content using the license (cancel the use restriction).
A function and a function of reproducing and displaying content may be provided.

In the present embodiment, the encrypted content is transmitted by a telecommunication line or broadcast or by a recording medium (CD).
-ROM, DVD-ROM, semiconductor memory, etc.) are distributed free of charge, and a decryption key for decrypting the encryption is provided by a telecommunication line or broadcast or on a recording medium (C
(D-ROM, DVD-ROM, semiconductor memory, etc.) and distributed for a fee (super distribution). However, the encrypted content may be distributed for a fee.

[0015] The content is preferably a literary work such as an electronic image, video, or music. Content leaks from the author who created the content. The content may be restricted by the author (content holder) or a third party (for example, a license management company or the like). Further, it is preferable that a person who imposes a use restriction on the content generates a license for releasing the use restriction. To restrict the use of the content, for example, the content is encrypted. The use restriction of the content may be such that the entire content cannot be reproduced or a part of the content cannot be reproduced. What plays a role of the license is preferably, for example, decryption key information (decryption program) used for decrypting the encrypted content. Owner A1
04 and the owner B106 may acquire the content whose use is restricted after acquiring the license, may acquire the license after acquiring the content whose use is restricted, or may use the content whose use is restricted. The license may be acquired simultaneously with the acquisition of the license.

The license management company 100 is a person who sells licenses, for example, manages licenses on behalf of content holders who are copyright holders of content. The content holder is the license management company 100
May also be used.

The license server 101 issues a license and certifies a license to be resold. The reseller 102 is a person who performs a business of purchasing a license from a license owner and reselling it to another person. Reseller 1
02 may also serve as the license management company 100. In this case, the license management company 100 uses the license transfer device 103. The license management company 100 and the reseller 102 are persons who have obtained a legitimate right to use the work.

The license transfer device 103 accumulates and transfers licenses, and also manages the license management company 10
0 is a device that communicates with and transmits and / or receives information.

The owner A104 has a recording medium A105 in which a license is stored. The recording medium A105 is
It is a recording medium having tamper resistance, for example, a multimedia card with a copyright protection function. Owner B106
Owns the recording medium B107 for storing the license.

The reseller 102 is the license transfer device 1
03 to purchase a license from owner A104,
After notifying the license management company 100 of the information of the sale,
The license is sold to the owner B106. Thereafter, the reseller 102 notifies the license management company 100 of the fact of the sale.
Notify.

The reseller 102 is the license transfer device 1
03 is connected to the license server 101 to perform mutual authentication. The license delegation device 103 becomes usable by being authenticated by the license server 101. The connection method between the license delegation device 103 and the license server 101 may be a logical connection via a network. When transmitting and receiving information between the license server 101 and the license transfer device 103, the information may be transmitted and received by encrypting the information using a public key encryption and a common key encryption.

The royalty request 108 represents a flow in which the license management company 100 requests a royalty according to the license resold to the reseller 102. The license transfer notification 109 is transmitted to the license transfer device 103
Indicates a flow of notifying the license server 101 of the license transfer 110. The license transfer 110 indicates a license transfer 110 from the recording medium A 105 to the license transfer device 103. The additional information transmission 111 indicates a flow of the additional information distributed together with the resale license transmitted from the license server 101 to the license transfer device 103. The additional information may include new content information related to the license to be resold, license related information, premium information provided only at the time of license resale, and the like. Royalty payment 112
Indicates that the reseller 102 pays a royalty to the license management company 100. As a payment method, a method of making a payment each time a license is transferred or a method of making a monthly payment in a lump can be considered. In addition, as a form of payment, methods such as electronic money, bank settlement, debit settlement, and credit card settlement can be considered. The license transfer 113 is executed by the license transfer device 10.
3 shows a flow of transferring a license from the third medium to the recording medium B107. At this time, the additional information 117 related to the license is also transmitted to the recording medium B107. The license purchase fee payment 114 indicates the flow of payment for the license purchased by the reseller 102 from the owner A104. Collection 115 is owned by reseller 102 by owner B10.
6 shows a flow in which the price of the license sold to No. 6 is collected from the owner B. In FIG. 1, the payment of the license-related consideration may be electronic money or the like.

FIG. 2 shows a functional block diagram of the license transfer device according to the embodiment of the present invention.

The control circuit 201 controls the license transfer device 1
Each of the circuits and devices in 03 is controlled. The recording medium interface 202 is a recording medium 1 on which a license is recorded.
05 is connected to the license transfer device 103. The communication device 203 is a license transfer device 103
And the license server 101 of the license management company 100
Used for communication with The operation device 204 is a device on which a user or the like is equipped with an operation panel and a status display for operating the license delegation device 103, and the like. The authentication circuit 205 performs mutual authentication between the license transfer device 103 and the license server 101 of the license management company 100. The encryption processing circuit 206
The information stored in the recording device 207 is encrypted. The recording device 207 stores the license and the information transmitted from the license management company 100. Note that the recording device 207
A configuration that can be detached from the license transfer device 103 can also be adopted. Also, the recording medium 105 and the recording device 20
7 may be used to transmit and receive information by using a public key encryption and a common key encryption when transmitting / receiving information to / from the server 7.
FIG. 2 is a functional block diagram of the license transfer device according to the embodiment of the present invention. The difference from FIG. 2 is that a recording apparatus 301 with a copyright protection function is provided instead of the encryption processing circuit 206.

FIG. 4 shows a processing flow chart of mutual authentication between the license transfer device and the license server according to the embodiment of the present invention.

The server of the license management company 100 and the license transfer device 103 are connected (communication is started) via a network or the like (401). License management company 1
00 and the license transfer device 103 perform mutual authentication (402). When the mutual authentication is completed, the control circuit 201 in the license transfer device 103 is activated, and the license transfer device 103 becomes usable. If the authentication fails, step 405 is executed (403). The license transfer device 103 receives various information such as setting information and license management information from the server of the license management company 100. At this time, the firmware of the control circuit 201 of the license transfer device 103 may be updated (404). If the authentication has failed, the license transfer device 103 performs an error process and ends the process (405).

FIG. 5 shows a processing flow chart of license transfer from the owner A to the reseller according to the embodiment of the present invention.

The owner A104 hands over the recording medium A105 to the reseller 102 and specifies a license to be sold (step 501). The owner A 104 and the reseller 102
As a method of transferring the recording medium between the resellers 102, a form in which a third party mediates, such as a store at the reseller 102 or mailing, may be used. Further, the reseller 102 establishes an online store using a network, and the owner A104 connects the recording medium A105 to an information terminal such as a portable terminal to communicate with the reseller 102 online, A
A method of transmitting / receiving only the information in 105 to / from the reseller 102 is also conceivable. Next, the reseller 102 records the recording medium A10
5 is connected to the license transfer device 103 (step 5).
02). The license transfer device 103 is a recording medium A 105
(Step 503).
Details of the processing will be described with reference to FIG. When the license transfer device 103 ends the process normally, the process proceeds to step 50.
Step 5 is executed. If the processing ends abnormally, step 506 is executed (step 504). The reseller 102 pays a license fee corresponding to the purchased license to the owner A 104 (step 505). As a method of paying the license fee, a method of increasing the paid license fee as the license issuance date and time is later can be considered. Next, the recording medium A105 is returned to the owner A104 (step 506). As a method of transferring the recording medium between the owner A 104 and the reseller 102, there is a format in which a third party mediates such as a store of the reseller 102, mailing, and the like. In addition, using the network, the reseller 10
2 establishes an online store, the owner A104 connects the recording medium A105 to an information terminal such as a portable terminal and communicates with the reseller 102 online,
A method of transmitting / receiving only the information in the recording medium A 105 to / from the reseller 102 is also conceivable.

FIG. 6 shows a recording medium A according to the embodiment of the present invention.
FIG. 7 is a processing flowchart of transferring a license from a license transfer device to a license transfer device.

The license is transferred from the recording medium A 105 to the license transfer device 103 (step 601).
Note that the recording medium A 105 and the license transfer device 103 may be connected via a network to perform processing. Further, the recording medium A 105 and the license transfer device 10
When 3 is connected, mutual authentication may be performed.
Next, the license delegation device 103 transmits information on the acquired license to the license server 101 (step 602). The license server 101 evaluates the validity of the license based on the license information (information having a function of evaluating the validity of the license) transmitted from the license transfer device 103 (step 603).
Step 603 may be executed by the license transfer device 103. If the license is valid, step 604 is executed. If the license is invalid, step 6
Execute 07. The license server 101 transmits the discount ticket information 116 related to the license information to the license transfer device 103 (step 604). Discount coupon information 1
No. 16 can hold this information at a price lower than the normal price (sale price to those who do not have discount ticket information) at the time of purchasing the license, or the conditions of use of the license possessed are better than before. It is useful information for information owners. It means that the terms of use of the license you have are better than before, if the license has an expiration date, if the expiration date is extended, or if the quality of the content (for example, sound quality, image quality, etc.) differs depending on the license The quality is improved. If the value of the discount ticket information 116 is high, it may be stored in the tamper-resistant area of the recording medium A105. The license transfer device 103 stores the discount ticket information 116 in the recording medium A 105 (step 60).
5). The license acquired by the license transfer device 103 is stored in the recording device 207 (step 606). It is preferable that the license transfer device 103 deletes the license from the recording medium A105 when the license is evaluated as valid.

FIG. 7 shows a processing flow chart for transferring a license from the reseller to the owner B according to the embodiment of the present invention.

The owner B106 transfers the recording medium B107 to the reseller 102 (step 701). In addition, owner B1
As a method of transferring the recording medium between the reseller 102 and the reseller 102, there is a format in which a third party mediates such as a store of the reseller 102 and mailing. Also, using the network, the reseller 102 opens an online store and the owner B10
6 connects the recording medium B107 to an information terminal such as a portable terminal, communicates with the reseller 102 online, and uses only the information in the recording medium B107 as the reseller 10.
A method of transmitting / receiving data to / from the terminal 2 is also conceivable. Next, reseller 10
2 searches and selects the license that the owner B106 wants to purchase from the license transfer device 103, and moves the license to the recording medium B107 (step 702). Note that the recording medium B 107 and the license transfer device 103 may be connected via a network to perform processing. When the recording medium B 107 and the license transfer device 103 are connected, mutual authentication may be performed. The license transfer device 103 performs a license transfer process to the recording medium B 107 (step 703). Details of the processing will be described with reference to FIG. The reseller 102 collects a license fee from the owner B 106 (step 704). Reseller 102 returns recording medium B107 to owner B106 (step 705).

FIG. 8 shows a processing flow of license transfer from the license transfer device to the recording medium B according to the embodiment of the present invention.

When the license transfer device 103 is the recording medium B1
The license is moved to 07 (step 801). still,
The recording medium B 107 and the license transfer device 103 may be connected via a network and perform processing. The recording medium B107 and the license transfer device 10
When 3 is connected, mutual authentication may be performed.
Next, the license transfer device 103 notifies the license server 101 that the license has been transferred to the recording medium B107.
(Step 802). License server 10
1 creates information related to the license transfer, for example, the transfer date and time, and stores it as a history in the license server 101 (step 803). This movement information preferably associates the type of content corresponding to the license with the date and time of movement of the license. In the movement information, it is preferable that the owner A104 and the owner B106 are associated with each other. The movement information further includes the owner A1
Amount of consideration for license paid to 04 and owner B10
And / or the amount of consideration for the license collected from 6.
Preferably, the difference between the price of the license paid to the owner A 104 and the price of the license collected from the owner B 106 is associated with each other. In addition, movement information,
When the license delegation device 103 acquires the license from the recording medium A 105, the license delegation device 103 may provide the license to the license server 101. When the license delegation device 103 provides the license to the recording medium B 107, the license delegation may be performed. The information may be provided from the device 103 to the license server 101. Owner A
It is preferable that the value of the license collected from the owner B 106 is larger than the value of the license paid to the license 104. The license server 101 transmits additional information (premier information) related to the license to the license transfer device 103 based on the license transfer information transmitted from the license transfer device 103 (step 804). The additional information includes new content information, content information related to the moved license, discount ticket information 116, and the like. License transfer device 1
03 stores the additional information received from the license server 101 in the recording medium B 107 (step 805). If the value of the additional information is high, the additional information may be stored in the tamper-resistant area of the recording medium B107. FIG. 9 shows a processing flow chart of the royalty payment from the reseller to the license management company according to the embodiment of the present invention. The method of claiming royalties is as follows.
However, there are methods for paying royalties to the license management company 100, methods for the license management company 100 to process the license transfer history at regular intervals, and for collectively charging the reseller 102 for royalties.

The license management company 100 counts license transfer information from the license transfer history in the license server 101 (step 901). The license server 101 determines at least one of the number of transferred licenses, the type of license, the selling price of the license, and the difference between the price of the license acquired by the owner A104 and the price of the license paid by the owner B106. And calculate the royalty. License server 101
The royalty amount corresponding to the license type or the royalty amount corresponding to the license sales price may be stored in advance as a royalty calculation table (corresponding information). The license server 101 specifies the type of content corresponding to the license included in the movement information,
The royalty corresponding to the type of the content is specified based on the royalty calculation table. When there are a plurality of specified royalties, the license server 101
The royalties are added to the royalties charged to the reseller. The license management company 100 requests the royalty from the reseller 102 (step 902).
In addition, as a method of claiming royalties, a method of holding down the price of an older license or changing the price according to the popularity of the license can be considered. In addition, the royalty may be set lower for the reseller 102 whose license resale frequency is larger than that of the reseller 102 whose license resale frequency is smaller. The reseller 102 pays the royalty to the license management company 100 (step 903). It should be noted that, in addition to bank transfer, electronic money, license management company 100 and reseller 102
It is also conceivable to use a token contracted between them. Note that a method of changing the additional information according to the royalty payment amount is also conceivable.

Each process of the embodiment of the present invention is preferably realized by either hardware or software (program). In the case of a program, a computer-readable recording medium (CD-R
OM, DVD-ROM, etc.) and can be transmitted over a network. That is, the program may be distributed by a recording medium or may be distributed through a network.

In the embodiment of the present invention, the license delegation device 103 is provided with a means for mounting a communication device with the license server 101 and moving the license between the recording medium A 105 and the recording medium B 107 while communicating with each other. . As a result, the license management company 100 having installed the license server 101
The license management company 100 can remotely control the license transfer device 103 by ascertaining the state of license transfer by the reseller 102 that has installed the license. Also, since a history of license transfer remains in the license server 101, the license management company 10
0 can charge the reseller a legitimate royalty.

Also, by using the embodiment of the present invention, the license transfer device 103 can handle the discount ticket information and the additional information related to the license, so that the owners of the recording media 105 and 107 recording the license can be used. 104,1
When 06 buys or sells a license through the reseller 102, discount ticket information, additional information, and the like can be obtained.
Thereby, the distribution of the license in the market can be promoted, and the resale of the license through the reseller 102 using the license transfer device 103 according to the embodiment of the present invention is activated. It is easier to manage.

Further, in the embodiment of the present invention, the communication device and the license server 1
01, the license delegation device 103 and the license server 101 can authenticate each other as legitimate devices, so that it is possible to prevent crimes caused by using unauthorized devices. .

According to the embodiment of the present invention, since the creator of the content or a person who has a legitimate right to use the literary work can grasp the transfer status of the license, the creator of the content or The interests of those who have a legitimate right to use the work can be protected.

[0041]

According to the present invention, by providing discount information and additional information of a license to a person who has sold a license or a person who has purchased a license, the purchase and sale of licenses are promoted, and the distribution of licenses in the market is promoted. It has the effect of promoting.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a license management system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of the license transfer device according to the embodiment of the present invention.

FIG. 3 is a functional block diagram of the license transfer device according to the embodiment of the present invention.

FIG. 4 is a processing flow chart of mutual authentication between the license transfer device and the license server according to the embodiment of the present invention.

FIG. 5 is a processing flow chart of license transfer from an owner A to a reseller according to the embodiment of the present invention.

FIG. 6 is a processing flowchart for transferring a license from the recording medium A to the license transfer device according to the embodiment of the present invention.

FIG. 7 is a processing flowchart for transferring a license from a reseller to an owner B according to the embodiment of this invention.

FIG. 8 is a processing flow section for transferring a license from the license transfer device to the recording medium B according to the embodiment of the present invention.

FIG. 9 is a processing flowchart of royalty payment from a reseller to a license management company according to the embodiment of this invention.

[Explanation of symbols]

100: License management company, 101: License server, 102: Reseller, 103: License transfer device, 104: Owner A, 105: Recording medium A, 106
... Owner B, 107 ... Recording medium B, 108 ... Loyalty request, 109 ... License transfer notification, 110 ...
License transfer, 111: Additional information transmission, 112: Royalty payment, 113: License transfer, 114
..Payment of license purchase costs, 115: Collection of license purchase costs, 116: Discount ticket information, 117: Additional information, 201: Control circuit, 202: Recording medium interface, 203 ..Communication device, 204 ... operation device, 205
... Authentication circuit, 206 ... Cryptographic processing circuit, 207 ... Recording device, 301 ... Recording device with copyright protection function

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Tsunehiro 1099 Ozenji Temple, Hitachi, Ltd.System Development Laboratory, Aso-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Nagamasa Mizushima 1099 Ozenji Temple, Aso-ku, Kawasaki City, Kanagawa Prefecture Inside Hitachi, Ltd.System Development Laboratory (72) Inventor Junichi Maruyama 1099 Ozenji Temple, Aso-ku, Kawasaki, Kanagawa Prefecture Inside Hitachi, Ltd.System Development Laboratory (72) Inventor Akira Kanehira 5-chome, Kamimizuhoncho, Kodaira, Tokyo No. 1 Hitachi, Ltd. Semiconductor Group (72) Inventor Kunihiro Katayama 5-20-1, Josuihonmachi, Kodaira-shi, Tokyo F-term in Hitachi Semiconductor Group 5B085 AC04 CA04

Claims (14)

[Claims] 1. A system for mediating the purchase and sale of a license for releasing the use restriction of the content whose use is restricted,
In the license buying and selling intermediation method using a computer, the license is read from a first recording medium used by a first user, and is used when the first user purchases another license on the first recording medium. A license trading mediation method for writing possible discount information and writing the license on a second recording medium used by a second user. 2. The system according to claim 1, wherein the discount information is read from the first recording medium, and the price paid by the first user is calculated based on the discount information by discounting the sales amount of the other license. The method according to claim 1, wherein the first user is charged for the price paid by the first user. 3. The method according to claim 1, wherein the discount information is obtained from a server that issues the license. 4. The method according to claim 1, wherein the license is deleted from the first recording medium. 5. The discount information includes information for extending the expiration date of the other license or information for improving the quality of content whose use restriction is released by the other license. Item 2. The license trading mediation method according to Item 1. 6. A system for mediating buying and selling of a license for releasing the use restriction of the content whose use is restricted,
In the license management device, a reading unit that reads the license from a first recording medium used by a first user; and a reading unit that is used when the first user purchases another license on the first recording medium. A license management device comprising: a writing unit for writing possible discount information; and a writing unit for writing the license to a second recording medium used by a second user. 7. A system for mediating buying and selling of a license for releasing the use restriction of the content whose use is restricted,
In the license buying and selling intermediation method using a computer, the license is read from a first recording medium used by a first user, and is read to a second recording medium used by a second user together with the license by the second user A license trading broker that writes discount information that can be used when purchasing another license. 8. A system for mediating buying and selling of a license for releasing the use restriction of the content whose use is restricted,
In the license management device, a reading unit that reads the license from a first recording medium used by a first user; and a second user together with the license to a second recording medium used by a second user. Writing means for writing discount information that can be used when purchasing another license. 9. A system for mediating buying and selling of a license for releasing the use restriction of the content whose use is restricted,
In the license buying and selling intermediation method using a computer, the license is read from a first recording medium used by a first user, and another content issued by an administrator who manages the license to the first recording medium. A license trading mediation method of writing additional information about the license and writing the license on a second recording medium used by a second user. 10. A license management apparatus for mediating the purchase and sale of a license for releasing the use restriction of the use-restricted content, wherein the license management apparatus stores the license from a first recording medium used by a first user. Reading means for reading, writing means for writing additional information relating to other contents issued by an administrator who manages the license to the first recording medium, and second recording medium used by a second user And a writing means for writing the license. 11. A method for mediating license purchase and sale by a computer for mediating the sale and purchase of a license for releasing the use restriction of use-restricted content, the method comprising the steps of: A license trading mediation method for reading the license and writing, along with the license, additional information regarding other content issued by an administrator who manages the license, to a second recording medium used by a second user. 12. A license management device for mediating the purchase and sale of a license for releasing the use restriction of the use-restricted content, the license management device rewriting the license from a first recording medium used by a first user. Reading means for reading, and writing means for writing, together with the license, additional information relating to other contents, issued by an administrator who manages the license, to a second recording medium used by a second user. License management device. 13. A license royalty calculation method for calculating a royalty paid from an intermediary for buying and selling a license for releasing the use restriction of the content whose use is restricted to a license manager for managing the license. The correspondence information between the type of the content and the amount of the royalty is stored, and the movement information of the license moved by the intermediary is acquired, and the royalty is obtained based on the movement information and the correspondence information. A license royalty calculation method comprising a calculation means for calculating. 14. A license management device for calculating a royalty paid from an intermediary for buying and selling a license for releasing the use restriction of the use-restricted content to a license administrator for managing the license, Storage means for storing correspondence information between the type of content and the amount of the royalties; acquisition means for acquiring the movement information of the license; calculation means for calculating the royalties based on the movement information and the correspondence information A license management device comprising: