WO2011034094A1

WO2011034094A1 - Copyrighted work sales method and system

Info

Publication number: WO2011034094A1
Application number: PCT/JP2010/065946
Authority: WO
Inventors: 平野　昇
Original assignee: 株式会社シーエスサービス
Priority date: 2009-09-18
Filing date: 2010-09-15
Publication date: 2011-03-24
Also published as: TW201115494A; JP2011065592A

Abstract

Disclosed are a copyrighted work sales method and system capable of achieving both protection and circulation promotion of a copyrighted work. In the system, a management server performs authentication by way of ancillary information of a copyrighted work for a client terminal that has acquired encrypted data of the copyrighted work, and after authentication, at the client terminal, the encrypted data is decrypted to generate a readable copyrighted work, copyrighted work data is re-encrypted to generate a client distribution-use file, and the purchase price of the copyrighted work is reliably collected from the client who has acquired the copyrighted work, whereas a portion of the price is automatically distributed as a copyright royalty to the provider of the copyrighted work and as a distribution reward to the client who has distributed the copyrighted work.

Description

Copyrighted work sales method and system

The present invention relates to a method and system for selling a copyrighted work, and more particularly, to a client who obtains the copyrighted work, a purchase price is reliably collected, while a collection of the copyrighted work is collected to a client who distributes the copyrighted work to other clients. The present invention relates to a copyrighted work selling method and system capable of simultaneously promoting the distribution and protection of a copyrighted work by automatically distributing a part of the purchase price.

Today, with the development of information and communication technologies such as the Internet, copyrighted materials can be easily acquired through a network. On the other hand, with the development of such information communication technology, music, video, publications and the like are illegally downloaded using a mobile phone or a personal computer.

Such illegal acquisition of copyrighted works has caused unreasonable revenue reductions for copyright holders and production companies, and has also become a factor that deprives these persons of incentives for new creations. Therefore, the illegal acquisition of such copyrighted work may hinder the development of industry and culture.

In order to solve this situation, various protection systems for copyrighted works have been proposed today. As such a system, for example, (1) a system that performs control that cannot be viewed when copyright protection information has been tampered with (see Japanese Patent Application Laid-Open No. 2008-141864), and (2) noise is added to a copyrighted work System for protecting the copyright of a high-quality music work (see Japanese Patent Application Laid-Open No. 2004-151512), and (3) a system for protecting the copyright by preventing unauthorized download of the work data (Japanese Patent Application Laid-Open No. 2004-2004). -260865) and the like exist.

More specifically, the system (1) detects whether or not the digital copy control descriptor and the content use descriptor, which are information for copyright protection, have been tampered with, and if tampering is detected, controls such that viewing is not possible. It is a system to go and suppress tampering. The system (2) is a system that appropriately protects a copyrighted work by adding or removing noise to a signal such as music or video from the first and second noise signal sources. The system (3) is a system that prevents illegal download of copyrighted work data by first encrypting the reproduction key data of the copyrighted work data by the host computer and further performing secondary encryption by the vendor computer. is there. That is, the systems (1), (2), and (3) are all systems that protect the copyrighted work by preventing unauthorized copying of the copyrighted work and limiting the users of the copyrighted work.

Such a system seems to have a certain effect in terms of controlling the distribution of copyrighted works. However, copyright owners and production companies originally have a desire to distribute their own works widely. At the same time, copyright owners and production companies have a desire to distribute copyrighted works widely and receive a reward that is commensurate with the volume of distribution. In addition, the client who acquired the copyrighted work by paying the purchase price can recover the cost of acquiring the copyrighted work if he / she can get a distribution fee by distributing the acquired copyrighted work to a third party. There is no need to get illegal. Therefore, as a protection system for copyrighted works, the client who obtained the copyrighted work is charged reliably, while if this client distributes the copyrighted work to a third party, a distribution fee is given to collect the purchase price. A system that promotes the distribution of copyrighted works by giving this opportunity is desirable. According to such a system, it is possible to widely distribute the copyrighted work to the world, promote the development of industry and culture, and reduce illegal acquisition of the copyrighted work. However, there are currently no copyrighted material sales methods and systems that satisfy these requirements.

JP 2008-141664 A JP 2004-151512 A JP 2004-260865 A

The present invention has been made in view of these inconveniences. The client who acquired the copyrighted work surely collects the purchase price and distributes the copyrighted work provider or the acquired copyrighted work to other clients. An object of the present invention is to provide a method and a system for selling a copyrighted work that can simultaneously protect the copyrighted work and promote distribution by distributing a part of the price to the client.

The invention made to solve the above problems is
A method of selling copyrighted works using a management server configured to be connectable to a plurality of client terminals via a communication network,
A client registration step of registering these clients in response to access from a plurality of client terminals;
A provider registration step for registering the provider of the copyrighted work;
A copyrighted material encryption step for encrypting copyrighted material data provided by the provider and input to the management server;
An auxiliary information recording step for recording identification information of the copyrighted work as auxiliary information;
A file delivery step for delivering the primary client distribution file comprising the encrypted data of the copyrighted work and the attached information to the primary client terminal;
The primary client distribution file is delivered from the management server, or is distributed directly from the primary client terminal or sequentially via one or more client terminals, so that the n-th order (n is a natural number of 1 or more) client distribution If there is an n-th client terminal that obtained the file,
an authentication step of authenticating by checking the attached information based on access from the n-th client terminal;
Attached information update step of adding n-th client information to attached information after authentication,
a readable work generating step for decrypting encrypted data of the work and generating a readable work at the n-th client terminal;
In the n-th client terminal, the n-th client information is added to the attached information and updated, and the copyrighted work is re-encrypted to generate a (n + 1) -th client distribution file;
In addition to collecting the purchase price of the copyrighted work from the n-th client, the distribution fee is paid to the provider as a copyright fee and to all or a part of the first to (n-1) -th clients recorded in the attached information. And a charge / distribution step for distributing a part of the price.

This work sales method can prevent unauthorized viewing of the work and protect the work by reliably collecting the purchase price of the work from the client. In addition, the method of selling the copyrighted work distributes a portion of the collected purchase price of the copyrighted work as a copyright fee to the provider of the copyrighted work and as a distribution fee to clients who distribute the copyrighted work to other clients. An incentive to provide or distribute a copyrighted work can be given to a provider or a client. As a result, it is possible to promote the distribution of copyrighted works and increase the number of clients in a formula. Therefore, the copyrighted work selling method can promote the distribution of copyrighted works by a plurality of clients that increase with the distribution of the copyrighted works. In addition, in the copyrighted work sales method, the copyrighted work data to be distributed is encrypted, and in order to decrypt and view the encrypted data, the client terminal accesses the management server, and performs authentication and authentication. It is necessary to go through billing procedures. Therefore, even if a third party who has not performed client registration acquires this work, the work cannot be viewed. Thus, the copyrighted work sales method has high security.

The file delivery step may be such that the primary client distribution file is transmitted through the network based on access from the primary client terminal. Thereby, the primary client who wants to acquire the copyrighted work provided by the provider can acquire the copyrighted work very easily. As a result, it is possible to further promote the distribution of copyrighted works.

The provider registration step is performed in response to access from the provider terminal,
It is preferable to further include a literary work receiving step of receiving literary work data transmitted from the provider terminal. As a result, the provider of the work can provide the work very easily by directly transmitting the work to the management server when the work is newly produced and provided. In addition, since the work sales method can easily provide a large number of works, the number of provided works increases, and as a result, the total number of clients can be significantly increased. Thereby, since the said copyrighted work sales method can raise a sufficient profit even if the amount of the copyrighted work purchase price per case is set low, the distribution of copyrighted works can be further promoted.

It is preferable that the attached information further includes information on the cumulative number of acquisition times of the file by the client terminal, and further distribution of the file can be restricted when the cumulative number of acquisition times reaches a specified value. Accordingly, it is possible to prevent a provider of the copyrighted work from setting a certain limit on the distribution expansion of the copyrighted work, and to prevent a multi-sale method called a so-called mouse lecture.

When multiple client information is recorded in the attached information,
The billing / distribution step may be able to distribute a part of the price to all of the first to (n-1) th clients recorded in the attached information. As a result, an incentive for the distribution of the copyrighted work can be given to all clients who acquire the copyrighted work, and the distribution of the copyrighted work can be further promoted.

When multiple client information is recorded in the attached information,
It is preferable that the charging / distribution step can limit clients to be distributed. As a result, it is possible to suppress a decrease in incentives for distribution of copyrighted works due to a decrease in distribution reward due to an increase in the number of clients to distribute. In addition, the copyrighted work selling method can appropriately distribute a portion of the collected copyrighted work purchase price according to the degree of contribution to the distribution of the copyrighted work.

When multiple client information is recorded in the attached information,
In the billing / distribution step, it is preferable that the distribution reward can be distributed more as the value of the order n is larger. As a result, a client having a shorter distribution route to a client who has newly acquired a copyrighted work can distribute more distribution rewards. In other words, a part of the collected purchase price is most distributed to clients who have directly distributed to the client who acquired the copyrighted work. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to the client. Thereby, the copyrighted work sales method can further promote the distribution of the copyrighted work.

When multiple client information is recorded in the attached information,
In the charging / distribution step, it is also preferable that the distribution reward can be distributed more as the value of the order n is smaller. As a result, a client having a shorter distribution channel from the copyrighted work provider can distribute more distribution rewards. In other words, a part of the collected purchase price is distributed to low-level clients. Therefore, the copyrighted work sales method can acquire a large number of low-order clients, and can improve the number of distributions per client. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to each client. Thereby, the copyrighted work sales method can further promote the distribution of the copyrighted work.

Therefore,
A system for selling copyrighted works using a management server configured to be connectable to a plurality of client terminals via a communication network,
The management server is
Client registration means for registering these clients in response to access from a plurality of client terminals;
A provider registration means for registering the provider of the copyrighted work;
Copyrighted work encryption means for encrypting copyrighted work data provided by the provider and input to the management server;
Attached information recording means for recording identification information of the copyrighted work as attached information,
A file delivery means for delivering a primary client distribution file comprising the encrypted data of the copyrighted work and the attached information to the primary client;
The primary client distribution file is delivered from the management server, or is distributed directly from the primary client terminal or sequentially via one or more client terminals, so that the n-th order (n is a natural number of 1 or more) client distribution If there is an n-th client terminal that obtained the file,
an authentication means for authenticating by checking the attached information based on access from the n-th client terminal;
After authentication, it has an attached information update means for adding the n-th client information to the attached information,
In the n-th client terminal, the encrypted data of the work is decrypted to generate a readable work,
In the n-th client terminal, the n-th client information is added to the attached information and updated, the work is re-encrypted, and a (n + 1) -th client distribution file is generated.
further,
In addition to collecting the purchase price of the copyrighted work from the n-th client, the distribution fee is paid to the provider as a copyright fee and to all or a part of the first to (n-1) -th clients recorded in the attached information. A copyrighted work distribution system characterized by having a billing / distribution means for distributing a part of the price as described above, by collecting a fee for purchasing the copyrighted work to the client, thereby preventing unauthorized viewing of the copyrighted work. Can prevent and protect the copyrighted work. In addition, since the copyrighted work sales system distributes a portion of the collected purchase price of the copyrighted work as a copyright fee to the copyrighted work provider, and distributes the copyrighted work to clients who distribute the copyrighted work to other clients, An incentive to provide or distribute a copyrighted work can be given to a provider or a client. As a result, it is possible to promote the distribution of copyrighted works and increase the number of clients in a formula. Therefore, the copyrighted work sales system can promote the distribution of copyrighted works by a plurality of clients that increase with the distribution of the copyrighted works. In addition, in the copyrighted material sales system, the distributed copyrighted work data is encrypted, and the client terminal accesses the management server to decrypt and view the encrypted data of the copyrighted work. It is necessary to go through authentication and billing procedures. Therefore, even if a third party who has not performed client registration acquires this work, the work cannot be viewed. As described above, the copyrighted work sales system has high security.

The file delivery means may send a primary client delivery file through the network based on access from the primary client terminal. Thereby, the primary client who wants to acquire the copyrighted work provided by the provider can acquire the copyrighted work very easily. As a result, it is possible to further promote the distribution of copyrighted works.

The above provider registration means is performed in response to access from the provider terminal,
It is good to further have a literary work receiving means for receiving literary work data transmitted from the provider terminal. As a result, the provider of the work can provide the work very easily by directly transmitting the work to the management server when the work is newly produced and provided. In addition, since the copyrighted work selling system can easily provide a large number of copyrighted works, the number of provided copyrighted works increases, and as a result, the total number of clients can be significantly increased. Thereby, since the said copyrighted work sales system can raise sufficient profit even if the amount of the copyrighted work purchase price per case is set low, the distribution of copyrighted works can be further promoted.

The above-mentioned attached information may further include information on the cumulative number of times the file has been acquired by the client terminal, and when the cumulative number of times has reached a specified value, further distribution of the file may be restricted. Accordingly, it is possible to prevent a provider of the copyrighted work from setting a certain limit on the distribution expansion of the copyrighted work and to a multi-sales system called a so-called “mouse lecture”.

When multiple client information is recorded in the attached information,
The billing / distribution means may be able to distribute a part of the price to all of the primary to (n−1) th clients recorded in the attached information. As a result, an incentive for the distribution of the copyrighted work can be given to all clients who acquire the copyrighted work, and the distribution of the copyrighted work can be further promoted.

When multiple client information is recorded in the attached information,
The billing / distribution means may be able to limit clients to be distributed. As a result, it is possible to suppress a decrease in incentives for distribution of copyrighted works due to a decrease in distribution reward due to an increase in the number of clients to distribute. In addition, the copyrighted work sales system can appropriately distribute a portion of the collected copyrighted work purchase price according to the contribution to the distribution of the copyrighted work.

When multiple client information is recorded in the attached information,
It is preferable that the charging / distribution means can distribute more distribution rewards to clients whose degree n is larger. As a result, a client having a shorter distribution route to a client who has newly acquired a copyrighted work can distribute more distribution rewards. In other words, a part of the collected purchase price is most distributed to clients who have directly distributed to the client who acquired the copyrighted work. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to the client. Thereby, the copyrighted work sales system can further promote the distribution of the copyrighted work.

When multiple client information is recorded in the attached information,
It is also preferable that the billing / distribution means can distribute more distribution rewards to clients whose order n is smaller. As a result, a client having a shorter distribution channel from the copyrighted work provider can distribute more distribution rewards. In other words, a part of the collected purchase price is distributed to low-level clients. Therefore, the copyrighted product sales system can acquire a large number of low-order clients, and can improve the number of distributions per client. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to each client. Thereby, the copyrighted work sales system can further promote the distribution of the copyrighted work.

Here, the “literary work” is a creative expression of thought or feeling, belonging to the range of literary arts, academics, art or music, and requiring copyright protection. . For example, music, video, various publications (electronic books such as magazines and novels, comics, application forms, paid manuals, pamphlets, etc.) can be mentioned.

The “provider” is the copyright owner of the copyrighted work according to the present invention or a person who has received permission to transfer it from the copyright owner to another person. The person who provided the management server. The “client” refers to a person who acquires or acquires a copyrighted work directly or indirectly from the management server. “Primary client” refers to a person who acquires or acquires a file directly or indirectly from the management server, and “secondary client” refers to a person who acquires or acquires a file distributed from the primary client terminal. Say. The “n-order client” refers to a person who acquires or acquires a file distributed sequentially from the primary client (n−1) and distributed from the next client.

“Delivery” means that the management server passes the file directly or indirectly to the primary client terminal, and the method is not limited. A case of “delivery” performed by a network connecting the management server and the primary client terminal is called “transmission”. “Distribution” means that a client terminal passes a file directly or indirectly to another client terminal, regardless of the method. “Acquisition” means that the management server or the client terminal receives the file, and the method is not limited. A case where “acquisition” is performed by the network is referred to as “reception”.

As described above, the method and system for selling a copyrighted work according to the present invention reliably collects the purchase price of the copyrighted work from the client who has obtained the copyrighted work, while providing a part of the price to the provider of the copyrighted work. By distributing automatically as a copyright fee and as a distribution fee to the client who distributed the copyrighted work, it is possible to simultaneously realize the promotion and protection of the copyrighted work.

It is a schematic block diagram which shows the literary work sales system which concerns on one Embodiment of this invention. It is a flowchart which shows the operation | movement procedure in the copyrighted work sales system of FIG. It is a sequence diagram which shows the production | generation procedure of the file for primary client distribution in the copyrighted product sales system of FIG. It is a figure which shows an example of the data structure of the attached information in the copyrighted work sales system of FIG. It is a sequence diagram which shows the transmission procedure of the file for primary client distribution in the copyrighted work sales system of FIG. It is a sequence diagram which shows the viewing-and-listening procedure of the copyrighted work by the primary client terminal in the copyrighted work sales system of FIG. It is a figure which shows the state which added the primary client information to the attached information of FIG. It is a schematic block diagram which shows the literary work sales system which concerns on a different form from the literary work sales system of FIG. It is a flowchart which shows the operation | movement procedure in the copyrighted work sales system of FIG. FIG. 9 is a sequence diagram showing a communication procedure when a management server receives literary work data from a provider terminal in the literary work sales system of FIG. 8. It is a sequence diagram which shows the acquisition procedure of the file in the primary client terminal of the copyrighted work sales system of FIG. 8, and the viewing-and-listening procedure of a copyrighted work. It is a sequence diagram which shows the viewing-and-listening procedure of the copyrighted work in the secondary client terminal of the copyrighted work sales system of FIG. It is a figure which shows the state which added the secondary client information to the attached information of FIG.

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

1 has a network 2, a management server 3, and a primary client terminal 4. There are actually a large number of client terminals other than the primary client terminal 4, and there may be a plurality of primary client terminals. However, in FIG. I will explain.

The network 2 is typically the Internet. As the transmission medium of the network 2, various media such as Ethernet (registered trademark), a wired medium such as an optical fiber or a telephone line, or a wireless medium can be used. In the network 2, the management server 3 and the primary client terminal 4 may be directly connected, or may be connected via a mobile communication network server (not shown).

The management server 3 includes a client registration unit 6, a provider registration unit 7, a work encryption unit 8, an attached information recording unit 9, a file delivery unit 10, an authentication unit 11, and an attached information update unit 12. And charging / distribution means 13. The management server 3 is connected to the distribution management database 5.

The client registration means 6 registers these clients in response to accesses from the primary client terminal 4 and other client terminals. As a result, the client can access the management server 3 to purchase the copyrighted work, and can view the copyrighted work acquired from the management server 3 or other clients. On the other hand, this allows the management server 3 to charge and distribute to the client. Client registration is performed by recording client information in the management server 3. Examples of the client information recorded by the client registration means 6 include ID information, password, name, deposit account information (account number and personal identification number), and the like.

The provider registration means 7 registers the provider of the copyrighted work. As a result, the provider can provide the copyrighted work to the management server 3, and the management server 3 can thereby provide the provider with a fee for purchasing the copyrighted work collected from the client. Can be distributed as copyright fees. The registration of the provider is performed by recording the provider information in the management server 3. Examples of the provider information recorded by the provider registration means 7 include ID information, password, name, deposit account information (account number and personal identification number), and the like.

The copyrighted work encryption means 8 encrypts copyrighted work data provided by the provider and input to the management server 3.

The attached information recording means 9 records the identification information of the copyrighted work as the attached information of the copyrighted work. The identification information recorded by the auxiliary information recording means 9 includes a serial number of a copyrighted work.

The primary client distribution file is composed of the copyrighted work data encrypted by the copyrighted work encryption means 8 and the attached information.

The file delivery means 10 delivers the primary client distribution file to the primary client. The delivery of the file is performed by transmitting a primary client distribution file through the network 2 that connects the management server 3 and the primary client terminal 4. The delivery of the file may be performed by attaching the file to an e-mail transmitted directly or indirectly from the management server 3 to the primary client terminal 4. Further, the file may be delivered by a method in which the primary client distribution file is copied from the management server 3 to the electronic recording medium using an electronic recording medium and transferred to the primary client terminal. In general, a USB memory, an SD memory, a CD-R, a DVD-R, or the like can be used as such an electronic recording medium.

The authentication unit 11 performs authentication by referring to the attached information of the acquired file based on the access from the primary client terminal 4 that acquired the primary client distribution file. Specifically, the authentication means 11 is in the identification information of the copyrighted work recorded in advance by the attached information recording means 9 and the attached information constituting the primary client distribution file transmitted from the primary client terminal 4. Check the identification information. The authentication unit 11 determines whether or not the two match, and if they match, authenticates that the copyrighted work file acquired by the primary client terminal 4 is authentic.

When the attached information update unit 12 authenticates that the file of the copyrighted work acquired by the primary client terminal 4 is authentic, the attached information update means 12 adds 1 to the attached information of the copyrighted work recorded in advance by the attached information recording means 9. Add and update next client information.

The billing / distribution means 13 collects the purchase price of the copyrighted work for the primary client and distributes a part of the price to the copyrighted work provider as a provision fee. The accounting / distribution means 13 distributes the work management fee to the manager of the management server 3. The accounting / distribution means 13 performs accounting / distribution processing by communication with the distribution management database 5.

The distribution management database 5 cooperates with the billing / distribution means 13 to manage the deposit accounts of the copyrighted work provider, the primary client, and the management server 3. That is, the distribution management database 5 increases and decreases the deposit amount of the copyrighted work provider, the primary client, and the management server 3 based on the information related to charging and distribution transmitted by the charging / distributing unit 13, Accumulate the deposit status of these persons.

The management server 3 is systematically configured by a computer including a control unit including a CPU, a ROM, a RAM, a hard disk, a monitor, a keyboard and the like. The client registration means 6, provider registration means 7, copyrighted work encryption means 8, attached information recording means 9, file delivery means 10, authentication means 11, attached information update means 12, and charging / distribution means 13 are the management server 3. The control unit is configured to function by controlling each unit based on a computer program stored in the ROM, hard disk, etc.

The primary client terminal 4 includes a file acquisition unit 14, a readable work generation unit 15, a distribution file generation unit 16, and a file distribution unit 17.

The file acquisition unit 14 acquires the primary client distribution file delivered from the management server 3. The file is acquired by receiving the primary client distribution file through the network 2 that connects the management server 3 and the primary client terminal 4. The file may be acquired by receiving an e-mail attached with a file transmitted directly or indirectly from the management server 3 to the primary client terminal 4. Further, the file may be obtained by an electronic recording medium storing the primary client distribution file copied by the management server 3. In general, a USB memory, an SD memory, a CD-R, a DVD-R, or the like can be used as such an electronic recording medium.

The readable work generation means 15 decrypts the encrypted data of the work that constitutes the primary client distribution file acquired by the primary client terminal 4 to generate a readable work.

The distribution file generation means 16 adds and updates the primary client information to the attached information constituting the primary client distribution file acquired by the primary client terminal 4 and re-encrypts the copyrighted work data. In this way, a secondary client distribution file including re-encrypted data of the copyrighted work and updated attached information is generated.

The file distribution unit 17 distributes the secondary client distribution file generated by the distribution file generation unit 16 to other client terminals.

The primary client terminal 4 is systematically provided with a control unit composed of a CPU or the like, a ROM, a RAM, a hard disk, a monitor, an input button, and the like. The file acquisition unit 14, the readable work generation unit 15, the distribution file generation unit 16, and the file distribution unit 17 are each controlled by a control unit based on a computer program stored in a ROM, a hard disk or the like of the primary client terminal 4. It is configured to function by controlling.

Hereinafter, the operation of the copyrighted product sales system 1 will be described with reference to FIG.

In the copyrighted work sales system 1, the copyrighted work is electronic data, which is delivered, acquired, distributed, stored, and the like. The format of the electronic data is appropriately selected depending on the type of the copyrighted work, the operation system used by the client terminal, the application for viewing the copyrighted work on the client terminal, and the like. In general, PDF (Portable Document Format), JPEG (Joint Photographic Experts Group), MPEG (Moving Picture Experts Group), GIF (Graphic InterHMP). Text Format), MP3 (MPEG-1 Audio Layer-3), etc. are used.

The information attached to the copyrighted work is also electronic data. The format of electronic data is not particularly limited. A work file is composed of the work data and the attached information data. When the electronic data format of the copyrighted work is PDF, the attached information can be embedded in the copyrighted work data.

In the copyrighted work sales system 1, the electronic data of the copyrighted work can be viewed only after the person who has acquired the copyrighted work data performs procedures such as authentication and accounting for the management server 3. Delivery, acquisition, distribution, etc. are performed in an encrypted state.

In the present invention, the method of encrypting or re-encrypting the copyrighted work data and the method of decrypting the encrypted data of the copyrighted work are particularly those that are used for encryption and decryption of electronic data. It is not limited. It may be a public key encryption method or a common key encryption method. As such a method, for example, AES (Advanced Encryption System), DES (Data Encryption Standard), Triple DES (Data Encryption Standard), RSA (Rivest-EmerdEmerdEmerdEmerdEmerdEmerdEmerdEmerdMentErDentEdEdEmEdEdEmEdEmEdEdEmEdEmEdEmEdEdEmEdEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdEmEdS Data Encipherment Algorithm), RC (Rivest Cipher or Ron's Code), and the like.

Further, in the copyrighted work sales system 1, communication between the client terminal such as the management server 3 and the primary client terminal 4 and the provider terminal may be performed by encrypted communication to ensure security. You may communicate in plain text. As a method of encrypted communication, SSL (Secure Socket Layer) or TLS (Transport Layer Security) is preferably used. In the SSL communication, a copyrighted work file and various kinds of information are transmitted after being encrypted with a common key or the like, and are decrypted with the common key or the like after being received. In the communication, an encrypted communication method other than SSL may be used. The communication procedure in the client terminal such as the primary client terminal 4 is instructed by the client terminal such as the primary client terminal 4 by information described in the JavaScript (registered trademark) language included in the copyrighted work file, for example. Can be done.

First, a method in which a client and a provider, which are the premise of the copyrighted material sales method and system of the present invention, register with the management server 3 will be described with reference to FIGS.

The primary client accesses the website provided by the management server 3 from the primary client terminal 4. After establishing communication with the management server 3, the primary client terminal 4 transmits primary client information from the primary client terminal 4. The management server 3 registers the primary client in association with the primary client information (ID information, name, password, deposit account information, etc.) by the processing of the client registration means 6 (STP1). The management server 3 notifies the primary client terminal 4 that registration has been completed. The registration of the primary client may be performed in advance, or may be performed at any time before the primary client distribution file is acquired.

The provider notifies the management server 3 of the provider information. The management server 3 associates the provider information (ID information, name, password, deposit account information, etc.) by the processing of the provider registration means 7 and registers the provider (STP2). The management server 3 notifies the provider that registration has been completed. Registration of the provider may be performed in advance, or may be performed at any time before providing the copyrighted work to the management server 3.

Next, with reference to FIG. 3, a method in which a provider provides a copyrighted work and generates a primary client distribution file will be described.

The provider of the copyrighted work creates the copyrighted work to be provided as PDF electronic data. The provider passes this copyrighted work data to the management server 3. When the provider's copyrighted work is not electronic data such as a book, the management server 3 converts it into electronic data by an appropriate method. The management server 3 encrypts the copyrighted material data by the processing of the copyrighted material encryption means 8 (STP3). The management server 3 creates identification information of the copyrighted work provided by the process of the attached information recording means 9 and records it as the attached information of the copyrighted work (STP4). At this time, the attached information includes identification information of the copyrighted work and data information as shown in FIG. The data information includes information related to copyrighted material data and is used to determine whether the copyrighted material has been tampered with. A primary client distribution file is generated from the encrypted data of the copyrighted work and the attached information, and stored in a storage unit (not shown) of the management server 3.

Subsequently, with reference to FIG. 5, a method for acquiring a copyrighted work from the management server 3 by the primary client terminal 4 will be described. It is assumed that the primary client has completed client registration by the above-described procedure.

The primary client terminal 4 makes a reception request for a copyrighted work desired to be acquired from among the copyrighted works provided by the management server 3. On the other hand, the management server 3 transmits the primary client distribution file of the copyrighted work requested to be received to the primary client terminal 4 by the processing of the file delivery means 10 (STP5).

The primary client terminal 4 acquires the primary client distribution file by the processing of the file acquisition unit 14 and stores it in the storage unit (not shown).

Further, with reference to FIG. 6, a method of viewing the copyrighted work of the obtained primary client distribution file on the primary client terminal 4 will be described.

The primary client terminal 4 reads the attached information constituting the primary client distribution file stored in the storage unit and transmits it to the management server 3. The management server 3 determines whether or not the attached information has been tampered with by the processing of the authentication unit 11 for the received attached information, and checks the attached information. When the management server 3 determines that the attached information transmitted from the primary client terminal 4 has not been tampered with and that the attached information and the attached information recorded in the management server 3 match, The primary client terminal 4 authenticates that the copyrighted work file is authentic (STP6).

After the authentication, the management server 3 adds and updates the primary client information (ID information) to the recorded attached information by using the attached information update unit 12 (STP7). After this update, the recorded auxiliary information includes identification information, primary client information (ID information), and data information as shown in FIG.

Further, after this authentication, the management server 3 notifies the primary client terminal 4 that it has been authenticated. After receiving the authentication notification, the primary client terminal 4 decrypts the encrypted data of the copyrighted work constituting the primary client distribution file to generate a readable work (STP8). Thereby, the primary client can view the acquired copyrighted work. Further, the primary client terminal 4 adds and updates the primary client information (ID information) to the attached information constituting the copyrighted work file, and re-encrypts the copyrighted work data. In this manner, a secondary client distribution file including re-encrypted data of the copyrighted work and updated attached information is generated (STP9). As a result, the primary client terminal 4 can distribute the generated secondary client distribution file to other client terminals.

As a method of generating a readable file by decrypting the encrypted data of the copyrighted work, a generally used decryption method can be used. The decryption method may be a method performed by an execution program added to the primary client distribution file or installed in the primary client terminal 4, or a key for decrypting the encrypted data of the copyrighted work. May be transmitted from the management server 3, received by the primary client terminal 4, and decrypted by the key.

As described above, as a result of the attachment information constituting the distribution file being updated by adding the primary client information (ID information), the contents of the attachment information constituting the distribution file are recorded in the management server 3. The contents are the same (FIG. 7). The method for updating the attached information may be a method of adding the primary client information (ID information) stored in the primary client terminal 4 to the attached information of the primary client distribution file. A method of transmitting the attached information updated in the server 3 to the primary client terminal 4 and replacing the attached information with the distribution file may be used.

As a method for re-encrypting copyrighted work data, a commonly used encryption method can be used. It may be a method performed by an execution program added to the primary client distribution file or installed in the primary client terminal 4, and a key for re-encrypting the copyrighted work data is received from the management server 3. A method may be used in which the data is transmitted, received by the primary client terminal 4, and re-encrypted with the key.

Further, the re-encryption of the work data may be performed by encrypting the readable work data generated by the decryption in the same or different encryption format as the decryption, or the acquired primary client. The re-encrypted data may be generated by changing the data so that the key to be decrypted is different from the encrypted data of the copyrighted work constituting the distribution file.

The management server 3 issues a charging / distribution instruction to the distribution management database 5 by the processing of the charging / distribution means 13 (STP10). Specifically, the management server 3 subtracts a predetermined copyrighted work purchase price (for example, 100 yen) from the deposit account of the primary client. On the other hand, the management server 3 pays 50 yen as a copyright fee to the deposit account of the copyrighted work provider. Further, the management server 3 pays an amount (50 yen) obtained by subtracting the copyright fee from the purchase price to the deposit account of the manager of the management server 3. Such billing / distribution processing is realized by updating deposit data stored in the distribution management database 5 according to an instruction from the billing / distribution means 13.

The copyrighted work sales system 1 can prevent illegal viewing of the copyrighted work and protect the copyrighted work by reliably collecting the purchase price of the copyrighted work from the primary client. In addition, since the copyrighted work sales system 1 distributes a part of the copyrighted work purchase price collected from the primary client to the provider of the copyrighted work, an incentive to provide the copyrighted work can be provided. Therefore, the copyrighted work sales system 1 can promote the distribution of copyrighted works. In addition, the copyrighted work sales system 1 encrypts the copyrighted work data to be distributed, and can view and listen to the copyrighted work only through authentication and billing processing by the management server 3. It has sex.

8 has a network 2, a management server 19, a provider terminal 20, a primary client terminal 21, and a secondary client terminal 22. In the following description, the same number is attached | subjected about the structure similar to the literary work sales system 1 of FIG. 1, and description is abbreviate | omitted suitably. In the copyrighted work sales system 18, there are actually a plurality of provider terminals 20, and many client terminals are present in addition to the primary client terminals 21 and the secondary client terminals 22. There may be a plurality of primary client terminals 21 or secondary client terminals 22 respectively. However, in FIG. 8, the description is limited to the provider terminal 20, the primary client terminal 21, and the secondary client terminal 22 in order to avoid complexity.

The management server 19 includes a client registration unit 6, a provider registration unit 23, a literary work reception unit 24, a literary work encryption unit 8, an attached information recording unit 25, a file delivery unit 10, and an authentication unit 11. Attached information update means 12 and billing / distribution means 26 are provided. The management server 19 is connected to the distribution management database 5.

The provider registration means 23 registers this provider in response to access from the provider terminal. Examples of the provider information registered by the provider registration means 23 include ID information, name, deposit account information (account number and personal identification number), and the like.

The work receiving means 24 receives the work provided by the processing of the work sending means 27 from the provider terminal 20.

The attached information recording means 25 records the identification information of the copyrighted work provided by the provider as attached information. The identification information recorded by the auxiliary information recording means 25 includes a counter indicating the serial number of the copyrighted work and the information on the cumulative number of file acquisitions by the client terminal.

The provider terminal 20 has a copyrighted work transmitting means 27. The copyrighted work transmitting means 27 transmits the copyrighted work held by the copyrighted work provider terminal 20 to the management server 19.

The primary client terminal 21 and the secondary client terminal 22 include a file acquisition unit 14, a readable work generation unit 15, a distribution file generation unit 16, and a file distribution unit 17, respectively.

The file distribution means 17 of the primary client terminal 21 distributes the secondary client distribution file to the secondary client terminal 22. Distribution of the file is usually performed by infrared communication between the primary client terminal and the secondary client terminal. A communication method such as Bluetooth (registered trademark) may be used. Further, it may be performed via an electronic recording medium such as a USB memory or an SD memory, or a method of attaching to an electronic mail transmitted / received between client terminals may be used.

The file acquisition unit 14 of the secondary client terminal 22 acquires a secondary client distribution file distributed from the primary client terminal 21.

Hereinafter, the operation of the copyrighted product sales system 18 will be described with reference to FIG. Note that description of operations similar to those of the copyrighted product sales system 1 in FIG. 1 is omitted as appropriate.

First, with reference to FIG. 10, a communication procedure between the provider terminal 20 and the management server 19 when the provider performs provider registration and provides a copyrighted work will be described.

First, the provider accesses the website provided by the management server 19 from the provider terminal 20 and establishes communication between the management server 19 and the provider terminal 20. Then, the provider terminal 20 transmits provider information to the management server 19. The management server 19 registers the provider by associating the provider information (ID information, password, name, deposit account information (account number, personal identification number, etc.)) by the processing of the provider registration means 23. (STP12). The management server 19 notifies the provider terminal 20 that the provider registration has been completed.

Then, the provider terminal 20 transmits the copyrighted work data stored in the storage unit (not shown) to the management server 19 by the processing of the copyrighted work transmitting means 27 in order to provide the copyrighted work. The management server 19 receives the literary work data by the literary work receiving means 24 (STP13). The management server 19 stores data in the storage unit with the received copyrighted work.

Next, a communication procedure performed between the copyrighted work server 20 and the primary client terminal 21 in order for the primary client terminal 21 to acquire the primary client distribution file will be described with reference to FIG.

First, the primary client terminal 21 establishes communication with the management server 19. Next, the primary client terminal 21 makes a reception request for a copyrighted work desired to be acquired among the copyrighted works provided by the management server 19. On the other hand, the management server 19 transmits the primary client distribution file of the copyrighted work requested to be received to the primary client terminal 21 (STP16). The primary client terminal 21 receives the primary client distribution file by the file acquisition unit 14. The primary client terminal 21 stores the received primary client distribution file in its storage unit.

Next, the primary client terminal 21 reads the attached information of the primary client distribution file stored in the storage unit and transmits it to the management server 19. The management server 19 uses the authentication unit 11 to determine whether or not the attached information has been tampered with and checks the attached information. When the management server 19 determines that the attached information transmitted from the primary client terminal 21 has not been tampered with and that the attached information and the attached information recorded by the management server 19 match, The primary client terminal 21 authenticates that the acquired file is authentic (STP 17).

After such authentication, the management server 19 adds and updates the primary client information (ID information) to the recorded auxiliary information by the auxiliary information updating means 12 (STP 18).

Further, after authentication, the management server 19 notifies the primary client terminal 21 that authentication has been performed. After receiving the notification of authentication, the primary client terminal 21 decrypts the encrypted data of the copyrighted work constituting the primary client distribution file to generate a readable work (STP19). Further, the primary client terminal 21 adds and updates the primary client information (ID information) to the attached information constituting the work file, and re-encrypts the work data. Thus, a secondary client distribution file including re-encrypted data of the copyrighted work and updated attached information is generated (STP20).

When the work file obtained by the primary client terminal 21 is authenticated by the management server 19, the counter value indicating the information on the cumulative number of times of acquisition of the file included in the recorded auxiliary information is incremented by one. An instruction is issued to the primary client terminal 21 and a counter indicating information on the cumulative number of times of identification information of the file stored in the primary client terminal 21 is incremented by one.

Further, the management server 19 issues a charge / distribution instruction to the distribution management database 5 by the charge / distribution means 26 (STP21).

The secondary client distribution file generated as described above is distributed from the primary client terminal 21 and acquired by the secondary client terminal 22. The primary client terminal 21 may be distributed to a plurality of secondary client terminals 22. This can promote the distribution of copyrighted works.

Next, a procedure for distributing a copyrighted work file from the primary client terminal 21 and acquiring it by the secondary client terminal 22 will be described.

First, the primary client selects a secondary client distribution file of a copyrighted work to be distributed and then presses an infrared communication button (not shown) of the primary client terminal 21. On the other hand, the secondary client presses an infrared communication button (not shown) of the secondary client terminal 22 in order to receive infrared communication from the primary client. Due to these operations performed by the primary client and the secondary client, the file distribution means 17 of the primary client terminal 21 and the file acquisition means 14 of the secondary client terminal 22 cooperate to cause the primary client terminal. The secondary client distribution file stored in 21 is distributed, acquired by the secondary client terminal 22, and stored in its storage unit (not shown).

With reference to FIG. 12, the viewing procedure of the copyrighted work in the secondary client terminal 22 will be described.

Assume that the secondary client is registered in the management server 19 in advance by the processing of the client registration means 6. Specifically, it is assumed that the secondary client ID information, password, name, deposit account information (account number or personal identification number), and the like are associated and stored in the storage unit.

The secondary client terminal 22 connects to a website provided by the management server 19 and displays a predetermined web page (not shown) by the operation of the secondary client. The secondary client terminal 22 transmits an ID and a password to the management server 19 by the input operation of the secondary client, and establishes communication between the management server 19 and the secondary client terminal 22.

Next, the secondary client terminal 22 reads the attached information constituting the secondary client distribution file stored in the storage unit. The secondary client terminal 22 transmits this attached information to the management server 19. The management server 19 uses the authentication unit 11 to determine whether or not the attached information has been tampered with and checks the attached information. The management server 19 does not falsify the identification information and primary client information (ID information) included in the attached information constituting the secondary client distribution file transmitted from the secondary client terminal 22, and this identification When the information and primary client information (ID information) and the identification information and primary client information (ID information) recorded by the management server 19 match, the secondary client terminal 22 acquires the information and primary client information (ID information). Authenticate that the file is legitimate (STP17).

After such authentication, the management server 19 adds and updates the secondary client information (ID information) to the recorded auxiliary information by the auxiliary information updating means 12 (STP18). After this update, the recorded accessory information includes identification information, primary client information (ID information), secondary client information (ID information), and data information as shown in FIG. In addition, the management server 19 increments the value of the counter indicating the information on the cumulative number of acquisition times of the file included in the recorded auxiliary information, and issues an instruction to the secondary client terminal 22 to the secondary client terminal 22. The counter indicating the cumulative number of acquisition times of the stored file identification information is incremented by one.

Further, after the authentication, the management server 19 notifies the secondary client terminal 22 of the authentication. After receiving the notification of authentication, the secondary client terminal 22 decrypts the encrypted data of the copyrighted work constituting the secondary client distribution file to generate a readable work (STP19). Further, the secondary client terminal 22 adds and updates the secondary client information (ID information) to the attached information constituting the work file, and re-encrypts the work data. As a result, a third-party client distribution file composed of re-encrypted data of the copyrighted work and updated attached information is generated (STP20).

Further, the management server 19 instructs the distribution management database 5 to perform charging / distribution by processing of the charging / distribution means 26 (STP21). Specifically, the management server 19 collects a predetermined work purchase price (for example, 100 yen) from the deposit account of the secondary client by the processing of the charging / distribution means 26. On the other hand, the management server 19 pays a copyright fee (for example, 50 yen) to the deposit account of the provider. Further, the management server 19 pays 25 yen as a management fee to the deposit account of the manager of the management server 19. Further, a distribution fee (for example, 25 yen) is paid to the primary client recorded in the information attached to the copyrighted work.

The work sales system 18 can sell a work to any third-order or later n-th client by the same steps as those for the above-mentioned secondary client. Since each client terminal can distribute files to a plurality of client terminals, the copyrighted work sales system 18 can greatly promote the distribution of copyrighted works.

The copyrighted work sales system 18 can prevent illegal viewing of the copyrighted work and protect the copyrighted work by reliably collecting the copyrighted work purchase price from the client. Also, the copyrighted work sales system 18 distributes a portion of the collected purchase price of the copyrighted work as a copyright fee to the provider of the copyrighted work and as a distribution fee to clients who distribute the copyrighted work to other clients. Incentives for providing or distributing a copyrighted work can be given to providers and clients. As a result, it is possible to promote the distribution of copyrighted works and increase the number of clients in a formula. Therefore, the copyrighted work sales system 18 can promote the distribution of copyrighted works by a plurality of clients that increase with the distribution of the copyrighted works. In addition, the copyrighted work sales system 18 encrypts copyrighted work data to be distributed, and the client accesses the management server 19 in order to decrypt and view the encrypted data of the copyrighted work. It is necessary to go through authentication and billing procedures. Therefore, even if a third party who has not performed client registration acquires the copyrighted work data, the copyrighted work cannot be viewed. Thus, the copyrighted work sales system 18 has high security.

The work sales system 18 can provide a work very easily by transmitting the work data directly to the management server 19 when the provider provides the work. Further, since the copyrighted work sales system 18 can easily provide a large number of copyrighted works, the number of provided copyrighted works increases, and as a result, the total number of clients can be significantly increased. Thereby, since the said copyrighted work sales system 18 can raise a sufficient profit even if it sets the amount of the copyrighted work purchase price per case low, it can further promote distribution of a copyrighted work.

The copyrighted product sales system 18 includes, as attached information, a counter indicating information on the cumulative number of times of file acquisition by the client terminal. The copyrighted work sales system 18 can restrict distribution of copyrighted works to other client terminals when the value of the counter reaches a specified value. Specifically, distribution of the copyrighted work to a new client terminal is restricted when the count of the copyrighted work acquisition counter reaches a prescribed numerical value (for example, 10 times). Accordingly, the copyrighted work sales system 18 can prevent a provider or the like from setting a certain limit on the distribution expansion of the copyrighted work, and can prevent a multi-sales system referred to as a so-called mouse lecture.

The billing / distribution means 26 of the copyrighted work sales system 18 can distribute a part of the price to all clients recorded in the attached information. Thereby, it is possible to give an incentive to distribute the copyrighted work to all clients who have obtained the copyrighted work, and to promote the distribution of the copyrighted work.

The billing / distribution means 26 of the copyrighted work sales system 18 can limit the clients that distribute a part of the copyrighted work purchase price to a certain range. As a result, the copyrighted work sales system 18 can suppress a reduction in incentives for the distribution of copyrighted works due to a decrease in distribution reward due to an increase in the number of clients to distribute. In addition, the copyrighted work sales system 18 can appropriately distribute a portion of the collected copyrighted work purchase price according to the contribution to the distribution of the copyrighted work.

The billing / distribution means 26 of the copyrighted work sales system 18 distributes the collected copyrighted work purchase price to one or a plurality of clients whose information is recorded in the attached information. It is possible to arbitrarily set the distribution ratio. Therefore, the distribution reward can be distributed more as the client having a larger value of the order n, and as a result, the distribution reward is distributed more as the client has a shorter distribution route to the client who newly acquired the copyrighted work. In other words, a part of the collected purchase price is most distributed to clients who have directly distributed to the client who acquired the copyrighted work. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to the client. Thereby, the copyrighted work sales system can further promote the distribution of the copyrighted work.

In addition, the copyrighted work sales system 18 can increase the distribution reward to be distributed as the value of n is smaller. Accordingly, the client having a shorter distribution channel from the provider of the copyrighted work distributes more distribution reward. Is done. In other words, a part of the collected purchase price is distributed to low-level clients. Therefore, the copyrighted work sales system 18 can acquire a large number of low-order clients, and can improve the number of distributions per client. Therefore, it is possible to give a strong incentive to distribute the copyrighted work to each client. Thereby, the copyrighted work sales system 18 can further promote the distribution of copyrighted works.

It should be noted that the copyrighted work selling method and system can be implemented in various modified and improved modes in addition to the above mode. For example, charging and distribution of the purchase price of a work for a client who wants to view the work may be performed at any time point before the work becomes readable. The work sales method and system can register a plurality of clients having a common ID as a group, and allow other clients in the same group to freely view a work obtained by one member of this group. It is also possible to make it possible.

As described above, the copyrighted material sales method and system of the present invention reliably collects a purchase price from a client who acquires a copyrighted work, and a part of the price is copyrighted to the copyrighted work provider. By distributing automatically as a distribution fee to a client who has distributed the copyrighted work sequentially as a fee, it is suitable for simultaneously promoting the distribution and protection of the copyrighted work.

DESCRIPTION OF SYMBOLS 1 Copyrighted goods sales system 2 Network 3 Management server 4 Primary client terminal 5 Distribution management database 6 Client registration means 7 Provider registration means 8 Copyrighted work encryption means 9 Attached information recording means 10 File delivery means 11 Authentication means 12 Attached information update Means 13 Charge / Distribution means 14 File acquisition means 15 Readable work generation means 16 Distribution file generation means 17 File distribution means 18 Work sales system 19 Management server 20 Provider terminal 21 Primary client terminal 22 Secondary client terminal 23 Provider registration means 24 Work receiving means 25 Attached information recording means 26 Billing / distribution means 27 Work sending means

Claims

A method of selling copyrighted works using a management server configured to be connectable to a plurality of client terminals via a communication network,
A client registration step of registering these clients in response to access from a plurality of client terminals;
A provider registration step for registering the provider of the copyrighted work;
A copyrighted material encryption step for encrypting copyrighted material data provided by the provider and input to the management server;
An auxiliary information recording step for recording identification information of the copyrighted work as auxiliary information;
A file delivery step for delivering the primary client distribution file comprising the encrypted data of the copyrighted work and the attached information to the primary client terminal;
The primary client distribution file is delivered from the management server, or is distributed directly from the primary client terminal or sequentially via one or more client terminals, so that the n-th order (n is a natural number of 1 or more) client distribution If there is an n-th client terminal that obtained the file,
an authentication step of authenticating by checking the attached information based on access from the n-th client terminal;
Attached information update step of adding n-th client information to attached information after authentication,
a readable work generating step for decrypting encrypted data of the work and generating a readable work at the n-th client terminal;
In the n-th client terminal, the n-th client information is added to the attached information and updated, and the copyrighted work is re-encrypted to generate a (n + 1) -th client distribution file;
In addition to collecting the purchase price of the copyrighted work from the n-th client, the distribution fee is paid to the provider as a copyright fee and to all or a part of the first to (n-1) -th clients recorded in the attached information. And a charge / distribution step for distributing a part of the price.
2. The copyrighted material selling method according to claim 1, wherein the file delivery step is to transmit a primary client distribution file through a network based on access from a primary client terminal.
The provider registration step is performed in response to access from the provider terminal,
The literary work sales method according to claim 1, further comprising a literary work receiving step of receiving literary work data transmitted from the provider terminal.
The copyrighted work according to claim 1, wherein the attached information further includes information on a cumulative acquisition count of the file by the client terminal, and further distribution of the file can be restricted when the cumulative acquisition count reaches a specified value. Sales method.
When multiple client information is recorded in the attached information,
2. The copyrighted material selling method according to claim 1, wherein the charging / distributing step can distribute a part of the price to all of the first to (n-1) th clients recorded in the attached information.
When multiple client information is recorded in the attached information,
2. The copyrighted material selling method according to claim 1, wherein the charging / distributing step can restrict clients to be distributed.
When multiple client information is recorded in the attached information,
2. The copyrighted material selling method according to claim 1, wherein the charging / distributing step can distribute more distribution reward to a client having a larger degree n.
When multiple client information is recorded in the attached information,
2. The copyrighted material selling method according to claim 1, wherein the charging / distributing step can distribute more distribution reward to a client having a smaller degree n.
A system for selling copyrighted works using a management server configured to be connectable to a plurality of client terminals via a communication network,
The management server is
Client registration means for registering these clients in response to access from a plurality of client terminals;
A provider registration means for registering the provider of the copyrighted work;
Copyrighted work encryption means for encrypting copyrighted work data provided by the provider and input to the management server;
Attached information recording means for recording identification information of the copyrighted work as attached information,
A file delivery means for delivering a primary client distribution file comprising the encrypted data of the copyrighted work and the attached information to the primary client;
The primary client distribution file is delivered from the management server, or is distributed directly from the primary client terminal or sequentially via one or more client terminals, so that the n-th order (n is a natural number of 1 or more) client distribution If there is an n-th client terminal that obtained the file,
an authentication means for authenticating by checking the attached information based on access from the n-th client terminal;
After authentication, it has an attached information update means for adding the n-th client information to the attached information,
In the n-th client terminal, the encrypted data of the work is decrypted to generate a readable work,
In the n-th client terminal, the n-th client information is added to the attached information and updated, the work is re-encrypted, and a (n + 1) -th client distribution file is generated.
further,
In addition to collecting the purchase price of the copyrighted work from the n-th client, the distribution fee is paid to the provider as a copyright fee and to all or a part of the first to (n-1) -th clients recorded in the attached information. And a charge / distribution means for distributing a part of the price.
10. The copyrighted material sales system according to claim 9, wherein the file delivery means transmits a primary client delivery file through a network based on access from a primary client terminal.
The above provider registration means is performed in response to access from the provider terminal,
The literary work sales system according to claim 9, further comprising literary work receiving means for receiving literary work data transmitted from a provider terminal.
10. The copyrighted goods sale according to claim 9, wherein the attached information further includes information on a cumulative acquisition count of the file by the client terminal, and further distribution of the file can be restricted when the cumulative acquisition count reaches a specified value. system.
When multiple client information is recorded in the attached information,
10. The copyrighted product sales system according to claim 9, wherein the billing / distribution means can distribute a part of the price to all of the first to (n-1) th clients recorded in the attached information.
When multiple client information is recorded in the attached information,
10. The copyrighted material sales system according to claim 9, wherein the charging / distributing means can limit clients to be distributed.
When multiple client information is recorded in the attached information,
10. The copyrighted product sales system according to claim 9, wherein the billing / distribution means can distribute more distribution reward to a client having a higher degree n.
When multiple client information is recorded in the attached information,
10. The copyrighted product sales system according to claim 9, wherein the billing / distribution means can distribute more distribution reward to a client having a smaller order n.