JP2002123767A - Electronized system and method for lending copyrighted material data and its program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronized copyrighted material data lending system/ method for preventing copy of copyrighted material data which is lent out and facilitating a procedure on lending of copyrighted material data. SOLUTION: The system is provided with a reception means receiving information on the request of the lending of electronized copyrighted material data, a ciphered data acquirement means acquiring ciphered copyrighted material data inputted from the reception means and specified by copyrighted material data information, a key data issuing means issuing key data which can password-release ciphered copyrighted material data and a lending means lending ciphered copyrighted material data to a user with key data issued by the key data issuing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a method for renting digitized copyrighted work data.

[0002]

2. Description of the Related Art A conventional lending operation will be described by taking an actual library for lending books made of paper instead of electronic data at first.

[0003] Libraries purchase and hold a large number of books made of paper, arrange many bookshelves in a large building, and greet users by arranging the purchased books on the bookshelves.

[0004] Users of the library visit such libraries located in various places, search for bookshelves, or turn over book cards (cards containing bibliographic information for each book) to find desired books.

[0005] When finding a desired book and wishing to borrow it, bring the book from the bookshelf to the rental counter and personal ID.
Present to library staff with card.

The lending counter displays a lending period, so that the user can know the return date.

[0007] The library staff at the lending counter receives the personal ID card and the book, records the lending, returns the personal ID card to the user, and lends the book to the user.

Next, after the lending period, the user brings the borrowed book and returns to the library.

When the book is returned to the return counter (which may be the same as the rental counter), the library staff searches the rental record for the book ID and records that the book ID has been returned. The return from the user's perspective is now complete.

[0010] The library staff returns the returned book to its original shelf position, thereby completing the return operation.

The above is the actual lending operation in the library.

[0012] However, in recent years, the lending of book data digitized with the development of information technology is not performed by lending a storage medium storing book data as in the conventional case.
A virtual library has been set up to transmit the book data itself to users through a network for viewing.

Prior applications relating to virtual libraries include the following.

[0014] In Japanese Patent Application Laid-Open No. 07-230577, a virtual library system has been devised so that open-type bookshelves can be customized for each user on a virtually displayed library.

Also, US Pat. No. 5,907,845 “Me
food and systemfor organi
zing on-line books using
In “bookcases”, digitized book data is stored in a remote storage device, and a user accesses the terminal from a terminal. The bookshelf (index) is stored on the user's local storage, which provides an electronic link to use the book data on the remote storage. The bookshelf, which is a metaphor of this library, can be customized by users.

[0016]

However, in the case of the prior art as described above, copyrighted works (books, photographs, paintings, graphics, music, audio, moving images, etc.) are transferred to a computer or mobile phone. There are some problems when lending so-called copyrighted work data digitized for use in terminals at libraries and rental stores.

First, when lending of digitized copyrighted work data is attempted by a lender such as a library or a rental store, it must be done in the form of lending and returning a storage medium storing electronic data. It is necessary for the user to carry out procedures at the library twice, lending and returning.

Second, it is possible to easily copy a copyrighted work prohibited by the Copyright Act in the case of digitized copyrighted work data. If duplicate copyrighted work data having the same quality as the original copyrighted work data can be created, serious effects such as sluggish sales will occur to sellers selling the same copyrighted work while lending companies such as libraries and rental stores exist. give. If the price of copyrighted work data is set on the assumption that it is copied to an unspecified number of people, the price of copyrighted work data becomes high and it becomes difficult to use it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. It is an object of the present invention to prevent duplication of rented copyrighted work data. An object of the present invention is to provide an electronic copyrighted work data lending system and method for simplifying lending procedures.

[0020]

In order to achieve the above object, according to the present invention, a request for lending electronic work data is accepted, and the work data is lent based on the request. An electronic work data lending system, comprising: user identification information for identifying a user who requests lending of electronic work data; and copyright work data information for identifying the copyrighted work data. Obtaining a rental period of the copyrighted data requested by the user, a receiving unit for receiving, and the encrypted copyrighted data specified by the copyrighted data information input from the receiving unit. Encrypted data obtaining means, key data issuing means for issuing key data capable of decrypting the encrypted work data, and key data issuing means for transmitting the encrypted work data to the key data issuing means. Characterized in that it and a lending unit lent to the user with a more issued key data.

With this configuration, since the digitized copyrighted work data lent to the user is encrypted, the contents cannot be used as it is.
Even if the copyrighted work data is copied, there is no use value by itself, so that the copying action can be prevented.

[0022] It is also preferable that the key data is such that the encrypted copyrighted work data is decrypted only for a predetermined period based on the lending period.

With this configuration, the copyrighted work data cannot be decrypted after the lending period, so that the act of returning the copyrighted work data is not required, and the user is required only to rent the copyrighted work data. You only need to complete the procedure, and the procedure for return can be completely eliminated.

When the user uses the same copyrighted work data more than once, the copyrighted work data may be kept at hand, and only the key data may be obtained from the second time onward. Can be.

[0025] It is also preferable that the apparatus further comprises a data recording means for recording at least the issuance of the key data.

An extension request receiving means for receiving a request for extension of the rented copyrighted work data at least together with copyrighted work identification information for identifying the copyrighted work data when the rental period has expired, The data recording means records the issuance of the key data according to the copyrighted work identification information, and the key data issuance means is based on the data held in the data recording means and the requested extension period. It is also preferable to issue key data.

The data recording means records copyrighted work identification information for identifying the copyrighted work data, the number of key data issuances for the copyrighted work data issued by the key data issuing means, and the lending period, It is also preferable to include a copyrighted work fee calculating means for calculating a usage fee for the copyrighted work data based on at least the lending period.

A management server having said lending means,
The data recording unit records at least management server identification information for identifying the management server, the number of key data issuances for each management server issued by the key data issuing unit, and the lending period. It is also preferable to include a server usage charge calculation unit that calculates a usage fee for each management server based on the number of times and the lending period.

With this configuration, it is easy to accurately calculate the value for using the copyrighted work data.

Preferably, the key data is a file different from the copyrighted work data.

[0031] It is also preferable that the key data is one file combined with the copyrighted work data.

The copyrighted work data is preferably a book.

The copyrighted work data is preferably a photograph.

The copyrighted work data is preferably a picture.

Preferably, the copyrighted work data is graphics.

Preferably, the copyrighted work data is music.

It is also preferable that the copyrighted work data is audio.

In a computerized work data lending system for accepting a request for lending computerized work data and lending the work data based on the request, the computerized work data lending system rents the computerized work data. Method
User identification information for identifying a user requesting the lending of digitized copyrighted work data, copyrighted work data information for specifying the copyrighted work data, and lending of the copyrighted work data requested by the user Receiving a period, receiving the copyrighted work data specified by the copyrighted work data information, and issuing key data capable of decrypting the encrypted copyrighted work data. And renting the encrypted copyrighted work data to the user together with the key data issued by the key data issuing means.

In a computerized work data lending system for accepting a request to rent computerized work data and lending the work data based on the request, the computerized work data rental system rents the computerized work data. A computer-executable computerized work data lending program for identifying a user who requests lending of computerized work data, and specifying the work data Accepting the copyrighted work data information and a loan period of the copyrighted work data requested by the user; and obtaining the encrypted copyrighted work data specified by the copyrighted work data information. Issuing key data capable of decrypting the encrypted copyrighted work data; and transmitting the encrypted copyrighted work data to the key data issuing means. Characterized in that it comprises the steps of: lent to the user with a more issued key data.

Further, according to the present invention, in a computerized work data lending system for accepting a request for lending computerized work data and lending the work data based on the request, A program that can be executed by a computer that lends the copyrighted work data, the user identification information identifying a user who requests the lending of the digitized copyrighted work data, and a copyrighted work for specifying the copyrighted work data. Accepting the product data information and the rental period of the copyrighted data requested by the user; obtaining the encrypted copyrighted data specified by the copyrighted data information; Issuing key data capable of decrypting the encrypted copyrighted work data;
Lending the encrypted copyrighted work data to the user together with the key data issued by the key data issuing means, and readable by a computer that has recorded the digitized copyrighted work data lending program. It is a recording medium.

The computerized connection is made communicable with the management server through a network, accepts a request for lending of digitized copyrighted work data, and lends the digitized copyrighted work data based on the request. A client terminal that constitutes the copyrighted work data lending system, and retrieves or specifies the user identification information for identifying the user who requests the lending of the digitized copyrighted work data, and the computerized work data. Means for inputting the copyrighted work data information and a loan period of the digitized copyrighted work data requested by the user, and transmits the information input by the input means to the management server. And a first transmitting means.

Preferably, the network is the Internet.

It is also preferable that the network is the Internet via a wireless modem or a wired modem.

The client terminal is preferably constituted by a personal computer, a portable terminal, or a shared terminal installed in a public place.

A management server that can communicate with each other through a network, receives a request for lending of digitized copyrighted work data, and lends the digitized copyrighted work data based on the request. In a copyrighted work data lending system, a lending basic information acquisition program for acquiring information necessary for lending of digitized copyrighted work data, which identifies a user who requests lending of digitized copyrighted work data Inputting user identification information, copyrighted work data information for searching or specifying the digitized copyrighted work data, and a lending period of the digitized copyrighted work data requested by the user; And transmitting the input information to the management server.

Also, the present invention includes a management server capable of communicating with each other through a network, accepts a request for lending of digitized work data, and, based on the request, retrieves the digitized work data. In a computerized work data lending system for lending, a program for acquiring information necessary for lending computerized work data, wherein a user who requests lending of computerized work data is provided. Enter the user identification information to be identified, the copyrighted work data information for searching or specifying the digitized copyrighted work data, and the loan period of the digitized copyrighted work data requested by the user. And transmitting the input information to the management server. It is.

A client terminal and a key data management server that issues key data capable of decrypting encrypted copyrighted work data are connected to each other via a network so as to be able to communicate with each other, and request for lending of digitized copyrighted work data. A copyrighted work data lending management server constituting a digitized copyrighted work data lending system for accepting and lending the copyrighted work data based on the request, wherein User identification information for identifying a user who requests lending of the copyrighted work data, copyrighted work data information for identifying the copyrighted work data, and a lending period of the copyrighted work data requested by the user. Receiving means for receiving, and second transmitting means for transmitting the information received by the receiving means to the key data management server. Connecting the encrypted data to the key data management server through the network to obtain key data capable of decrypting the encrypted copyrighted work data. Key data acquiring means; and third transmitting means for transmitting the encrypted copyrighted work data and the key data to the client terminal.

The network is preferably the Internet.

Preferably, the network is the Internet via a wireless modem or a wired modem.

Further, it is preferable that the client terminal is constituted by a personal computer, a portable terminal, or a shared terminal installed in a public place.

The system includes a client terminal capable of communicating with each other through a network and a key data management server for issuing key data capable of decrypting encrypted copyrighted work data, and issues a request for lending of digitized copyrighted work data. In a computerized work data lending system that accepts and lends the work data based on the request, the computerized work data lending management program is executable by a computer that lends the computerized work data. Input from the client terminal through the network, user identification information for identifying a user who requests lending of digitized copyrighted work data, and copyrighted work data information for specifying the copyrighted work data; Receiving a loan period of the copyrighted data requested by the user, receiving the information, Transmitting to the key data management server; obtaining the encrypted copyrighted work data; connecting to the key data management server through the network to decrypt the encrypted copyrighted work data Obtaining the key data, and transmitting the encrypted copyrighted work data and the key data to the client terminal.

The present invention also includes a client terminal capable of communicating with each other through a network and a key data management server for issuing key data capable of decrypting encrypted copyrighted work data. In an electronic copyrighted work data lending system that accepts a data lending request and lends the copyrighted work data based on the request, a program executable by a computer that lends the electronically copyrighted work data User identification information input from the client terminal through the network to identify a user who requests lending of digitized copyrighted work data, and copyrighted work data information for specifying the copyrighted work data Receiving a loan period of the copyrighted work data requested by the user; and
Transmitting the received information to the key data management server; obtaining the encrypted copyrighted work data; connecting to the key data management server through the network; Obtaining a key data that can decrypt the copyrighted work data and a step of transmitting the encrypted work data and the key data to the client terminal. Recording medium.

The computerized work data is connected to the management server via a network so as to be able to communicate with each other, accepts a request for lending the computerized work data, and rents the work data based on the request. A key data management server that constitutes a lending system, comprising: an acquisition unit that acquires, from the management server through the network, copyright identification information that identifies at least digitized copyrighted data; Key data issuing means for issuing key data capable of decrypting encrypted copyrighted work data identified by the information, and fourth transmission for transmitting the key data issued by the key data issuing means to the management server Means.

Preferably, the network is the Internet.

It is also preferable that the network is the Internet via a wireless modem or a wired modem.

The computerized management system includes a management server capable of communicating with each other through a network, accepts a request for lending of digitized work data, and lends the copyrighted work data based on the request. In the lending system, a key data issuing program executable by a computer that issues key data, and obtains, from the management server through the network, copyrighted work identification information that identifies at least digitized copyrighted work data. Performing, issuing key data capable of decrypting the encrypted work data identified by the work identification information, and transmitting the issued key data to the management server. It is characterized by the following.

Further, the present invention includes a management server capable of communicating with each other through a network, accepting a request for lending of digitized work data, and lending the work data based on the request. In a computerized work data lending system, a computer executable program for issuing key data, the work identification being input from the management server through the network and identifying at least the computerized work data Obtaining information, issuing key data capable of decrypting the encrypted copyrighted work data identified by the copyrighted work identification information, and transmitting the issued key data to the management server. And a computer-readable recording medium recording a key data issuing program including

[0058]

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

FIGS. 1 to 6 show a system and a method for lending electronic work data in an embodiment of the present invention. Note that the copyrighted work is a copyrighted work, and is, for example, a book, a photograph, a painting, graphics, music, sound, a moving image, or the like.

FIG. 1 is a diagram showing a system configuration of a computerized work data lending system. An example of this apparatus configuration includes a user (client) terminal U, a library (rental) system L as a copyrighted work data rental management server, a key data issuing system K as a key data management server, and a network 18 connecting these. Is done.

The user terminal U executes the program processing C
PU U13, ROM U12 and RAM U11 storing program codes and data, HDD U14 storing a large amount of program codes and data, display device U15 for displaying the result of program processing, input device U16 for inputting characters , And a network interface U17 for connecting to a network.

The user terminal U only needs to include these components, and the appearance is not limited. For example, a desktop computer, a notebook computer, a portable information terminal, or a shared terminal installed in a public place, for example, a stand-type kiosk terminal may be used. The person who borrows and uses the copyrighted work data may freely select it in consideration of the form of use.

The lending system L and the key data issuing system K
The components are almost the same. However, the lending system L
In order to store and process copyrighted work data and a user database, etc., and in the key data issuing system K, to store and process key data, copyrighted work data, key data issuance history records, etc. Storage capacity is increasing.

Network interface U17
Is preferably the Internet, and its connection form is LA
Not only a connection via the N interface but also a connection via a wireless modem or a wired modem may be used.

FIG. 2 is a diagram showing a basic flowchart of the lending process according to the present embodiment. The lending process of the present invention consists of five basic steps.

Step 1 is login. The user accesses the lending system L, sends a user ID and a password as user identification information, and obtains access permission to the lending system L.

Step 2 is catalog selection and lending request. A user permitted to access the lending system L can browse a list of digitized copyrighted work data held by the lender, search by bibliographic information or keywords as copyrighted work data information, The rental desired work data is determined, and a lending request is made to the lending system L. The user then waits until step 4.

Step 3 is key data issuance. The lending system L, which has received the lending request from the user, accesses the key data issuing system K and requests the key data issuance necessary for decrypting the copyrighted work data requested for lending. The key data issuance system K receives from the lending system data such as the copyrighted work data ID as the copyrighted work identification information and the lending period necessary for key data issuance, generates and issues key data, sends the data to the lending system L, and rents out. System L receives the key data.

Step 4 is to download the copyrighted work data + key data. The lending system L sets the digitized copyrighted work data and key data as a set, and sets the set on a path that can be downloaded by the user. When the download is ready, the lending system L informs the user that the download is ready. The user downloads and saves the copyrighted work data + key data to his / her terminal according to the instruction.

Step 5 is logout. The user logs out of the lending system L. Thereafter, the user browses and uses the copyrighted work data downloaded to his terminal.

Here, the digitized copyrighted work data may be stored in the lending system L, the key data issuing system K, or may be stored in another storage device. Good. In this case, the digitized copyrighted work data may be stored as encrypted data, and may be stored in a rental system L, a key data issuing system K, or an encryption unit provided in an external device. It may be encrypted.

Next, each step will be described in detail.

FIG. 3 is a flow chart for explaining in detail the login in step 1 in FIG. 2, and is an exchange between the user and the lending system (library).

First, the user accesses the rental system via the network (step 101).

In the accessed lending system, the system transmits a login screen to the user (step 10).
2).

The user enters a user ID and a password in a predetermined text box on the login screen (FIG.) By using the input means, and clicks the send button to transmit to the lending system (step 103, first transmitting means). ).

Upon receiving the user ID and the password, the lending system searches the stored user database for the user ID (step 104). If there is a user ID in the user database, the password is collated (step 105). If the password on the user database matches the password sent by the user, login is permitted. If login is permitted, connection port, hardware address of network interface of user terminal, IP number, Cockie of WWW browser
Information and the like are associated with the user ID on a one-to-one basis, and the session of the user permitted to access the lending system is maintained until logout.

If there is no user ID in the user database, or if the password on the user database does not match the password transmitted by the user, the process returns to step 102 for transmitting the login screen again to the user.

However, these steps may be performed implicitly besides explicitly performing them. That is, the user ID and the password may be stored in the user terminal, and automatically transmitted in response to the inquiry of the lending system to log in.

FIG. 4 is a flowchart describing in detail the catalog selection and lending request in step 2 in FIG. 2, and is an exchange between the user and the lending system.

First, the user requests a catalog of copyrighted work data from the lending system (step 201). The lending system transmits a catalog in response to a request from the user (step 202). The user receives and browses the catalog and determines the copyrighted work data to be borrowed (step 203).

More specifically, since it is impossible to browse all book catalogs on the screen of the user terminal, different catalogs are exchanged many times at the request of the user.

It is also important to create a catalog by searching for the convenience of the user. The user sends bibliographic items and keywords to the lending system and retrieves the result, and sends the result to the user as a catalog, and the user determines the copyrighted work data to borrow from the retrieved result catalog.

When the number of search results is large, it is impossible to browse all the book catalogs on the screen of the user terminal, so that different catalogs are exchanged several times according to the user's request. Will be.

The user who has determined the copyrighted work data to be borrowed then makes a lending request to the lending system. The user terminal instructs the corresponding copyrighted work data and transmits it to the lending system (step 204, first transmitting means). In the lending system, the lending request is received (step 205, receiving means), and the catalog selection and lending request in step 2 end.

FIG. 5 is a flowchart for explaining in detail the key data issuance in step 3 in FIG. 2, and is an exchange between the lending system and the key data issuance system.

First, the lending system sends a lending system ID and a password as management server identification information to the key data issuing system and logs in (step 301).

Next, the lending system transmits key data issuing data to the key data issuing system to request issuance of key data (step 302, second transmitting means). The key data issuance data is data required to create key data for decrypting copyrighted work data. A book ID is used for decrypting specific copyrighted data to a specific user for a specific period. , A user ID, a lending period, and the like.

When the key data issuing system receives the key data issuing data (step 303, obtaining means), it generates key data (step 304, key data issuing means).

Along with the generation of key data, the key data issuing system uses a lending system ID, a book ID, a user ID,
The key data issuance history such as the lending period and the key data issuance date and time is recorded in the data recording means (step 305). The key data issuance history is also used to calculate the usage fee for copyrighted work data.

Next, the key data is transmitted to the lending system (step 306, fourth transmitting means). The lending system receives the key data (step 307, key data acquisition means), logs out of the key data issuing system (step 308), and the key data issuance in step 3 ends.

FIG. 6 is a flowchart for explaining in detail the download in step 4 in FIG. 2, and is an exchange between the user and the lending system.

First, in the lending system, as preparation for downloading, the encrypted copyrighted work data and the corresponding key data obtained by the encrypted data obtaining means are set to predetermined paths (step 401). This is equivalent to copying the file to a location where the user can download it.

The copyrighted work data and the key data may be two separate files, or may be integrated and handled as one file.

Next, the lending system generates and transmits a download screen to the user (step 402). For example, if the user accesses and uses the lending system with a WWW browser, H including a link for download
Generate and transmit TML.

The user receives the download screen (step 403), confirms it on the screen of his terminal, and transmits a download request (step 404). When the download request is received by the rental system (Step 4
05), transmission of copyrighted work data and key data is started (Step 406, lending means, third transmitting means). The user receives all the copyrighted work data and key data (step 407), and the download in step 4 in FIG. 2 ends.

The logout of step 5 in FIG.
The user may explicitly instruct the lending system to log out, or disconnect the user terminal from the network, or log out when the user has not accessed the lending system for a certain period of time. The session may be closed on the lending system side assuming that this is the case. Further, these methods may be used in combination.

According to the present embodiment, a copyrighted data usage fee generated when the lending system provides a service of lending copyrighted data to a user can be calculated as follows.

The key data issuance count and the lending period are read for each book ID from the key data issuance / recording history at regular intervals, and the total lending period for each book ID is calculated. When the lending period is fixed, the number of times the key data is issued may be multiplied by the fixed lending period.

By multiplying the copyrighted data usage fee per unit period of each book ID by the total lending period, each book ID
Calculate the usage fee of

The usage fee for each book ID is added up for each rental system ID to obtain a copyrighted work data usage fee charged to each rental system.

In an actual contract, a more detailed agreement may be made.

In a lending system that does not collect fees from users and that relies on public expenditures as in the case of a public lending system, it is necessary to operate within an annual budget. Good.

It is also possible to purchase copyrighted data and issue key data free of charge.

In the present embodiment, the key data issuing system receives the book ID from the lending system and issues the key data. However, the key data issuing system receives the encrypted work data and issues the key data. Alternatively, an encryption unit may be provided, and after receiving a book ID or copyrighted work data, the key data issuing system may encrypt the copyrighted work data and issue a key.

In the processing in the computerized work data lending system according to the present invention, the user terminal U, the lending system L, and the key data issuing system K are always executed by computer devices connected to each other via the network 18. The method may be performed by a human using a portable storage medium such as a CD.

[0107]

As described above, according to the present invention,
Since the digitized copyrighted work data lent to the user is encrypted, the contents of the copyrighted work data cannot be used as it is. Since there is no utility value, the duplication act can be prevented.

The key data is decrypted only for a predetermined period based on the lending period, so that the encrypted copyrighted data is decrypted after the lending period. Therefore, the act of returning the copyrighted work data is not required, and the user only has to perform the procedure only when lending, and the procedure for returning the copyrighted data can be completely eliminated.

Further, by providing at least data recording means for recording the issuance of key data, it is possible to calculate the cost of renting copyrighted work data, so that it is possible to accurately calculate the price for using the copyrighted work data. It will be easier.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration of a computerized work data lending system.

FIG. 2 is a diagram showing a basic flowchart of a lending process according to the embodiment.

FIG. 3 is a diagram illustrating a flowchart describing in detail a login in step 1 in FIG. 2;

FIG. 4 is a view showing a flowchart illustrating in detail a catalog selection and a loan request in step 2 in FIG. 2;

FIG. 5 is a flowchart showing the details of key data issuance in step 3 in FIG. 2;

FIG. 6 is a diagram showing a flowchart illustrating in detail download in step 4 in FIG. 2;

[Explanation of symbols]

U User terminal U11 User terminal RAM U12 User terminal ROM U13 User terminal CPU U14 User terminal HDD U15 User terminal display device U16 User terminal input device U17 User terminal network interface L Library (rental) system L11 Library System RAM L12 Library system ROM L13 Library system CPU L14 Library system HDD L15 Library system display device L16 Library system input device L17 Library system network interface K Key data issuing system K11 Key data issuing system RAM K12 Key data issuing system ROM K13 Key data issuing System CPU K14 Key data issuing system HDD K15 Key data issuing system display K16 Key data issuing system Device K17 key data issuing system network interface 18 network

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04L 9/32 H04L 9/00 673A

Claims (38)

[Claims] An electronic copyrighted work data lending system for accepting a request for lending electronic work data, and lending the copyrighted work data based on the request, comprising: User identification information for identifying a user who requests lending of product data, copyright data information for identifying the copyright data, and a lending period of the copyright data requested by the user are received. Receiving means; encrypted data obtaining means for obtaining the encrypted copyrighted work data specified by the copyrighted work data information input from the receiving means; and decrypting the encrypted copyrighted work data Key data issuing means for issuing possible key data; and a lender for lending the encrypted copyrighted work data to the user together with the key data issued by the key data issuing means. A digitized copyrighted work data lending system, comprising: 2. The computerized digital work according to claim 1, wherein the key data decrypts the encrypted work data only for a predetermined period based on the lending period. Product data rental system. 3. The computerized work data lending system according to claim 1, further comprising data recording means for recording at least issuance of the key data. 4. An extension request receiving means for receiving a request for extension of the rented copyrighted work data together with at least copyrighted work identification information for identifying the copyrighted work data when the rental period has passed. The data recording unit records the issuance of the key data in accordance with the copyrighted work identification information, and the key data issuance unit transmits the data held in the data recording unit and the requested extended period. The computerized work data lending system according to claim 3, wherein key data based on the key data is issued. 5. The data recording means records the work identification information for identifying the work data, the number of key data issuances for the work data issued by the key data issuing means, and the lending period. 5. The computerized work data lending system according to claim 3, further comprising a work use charge calculation unit configured to calculate a use charge for the work data based on at least the lending period. . 6. A management server having the lending means, wherein the data recording means includes at least management server identification information for identifying the management server, and key data for each management server issued by the key data issuing means. And a server usage charge calculating unit that records the number of issuances and the lending period, and calculates a usage fee for each of the management servers based on the number of issuances and the lending period. Or the computerized work data rental system according to 5. 7. The computerized work data rental system according to claim 1, wherein the key data is a file different from the work data. 8. The computerized work data lending system according to claim 1, wherein the key data is a single file combined with the work data. . 9. The electronic copyrighted work data lending system according to claim 1, wherein the copyrighted work data is a book. 10. The electronic copyrighted work data rental system according to claim 1, wherein the copyrighted work data is a photograph. 11. The computerized work data lending system according to claim 1, wherein the work data is a picture. 12. An electronic copyrighted work data lending system according to claim 1, wherein said copyrighted work data is graphics. 13. The system according to claim 1, wherein the copyrighted work data is music. 14. The electronic copyrighted work data lending system according to claim 1, wherein the copyrighted work data is audio. 15. A computerized work data lending system for accepting a request to rent computerized work data and renting the work data based on the request. A user identification information for identifying a user who requests the lending of digitized copyrighted work data, copyrighted work data information for identifying the copyrighted work data, Accepting the requested lending period of the copyrighted work data; accepting the encrypted copyrighted work data specified by the copyrighted work data information; decrypting the encrypted copyrighted work data Issuing possible key data; and lending the encrypted copyrighted work data to the user together with the key data issued by the key data issuing means. A method for renting digitized copyrighted work data, comprising: 16. A computerized work data lending system for accepting a request to rent computerized work data and renting the work data based on the request. A program that can be executed by a computer that lends the copyrighted work data, and user identification information that identifies a user who requests lending of the digitized copyrighted work data; Receiving a loan period of the copyrighted work data requested by the user; obtaining the encrypted copyrighted work data specified by the copyrighted work data information; and Issuing key data capable of decrypting the product data; and transmitting the encrypted copyrighted work data to the key data issued by the key data issuing unit. And lending to the user. An electronic copyrighted work data lending program, comprising: 17. A computerized work data lending system for accepting a request to rent computerized work data and renting the work data based on the request. A program that can be executed by a computer that lends the copyrighted work data, and user identification information that identifies a user who requests lending of the digitized copyrighted work data; Receiving a loan period of the copyrighted work data requested by the user; obtaining the encrypted copyrighted work data specified by the copyrighted work data information; and Issuing key data capable of decrypting the product data; and transmitting the encrypted copyrighted work data to the key data issued by the key data issuing unit. A computer-readable recording medium recording a computerized work data lending program, comprising: 18. An electronic device which is communicably connected to a management server through a network, accepts a request for lending of digitized work data, and lends the digitized work data based on the request. A client terminal that constitutes a digitized copyrighted work data lending system, and retrieves user identification information for identifying a user who requests lending of digitized copyrighted work data, and retrieves the digitized copyrighted work data. Or input means for inputting the copyrighted work data information for specifying and the loan period of the digitized copyrighted work data requested by the user; and inputting the information input by the input means to the management server. And a first transmitting means for transmitting. 19. The client terminal according to claim 18, wherein the network is the Internet. 20. The client terminal according to claim 18, wherein the network is the Internet via a wireless modem or a wired modem. 21. The client terminal according to claim 18, comprising a personal computer. 22. The client terminal according to claim 18, comprising a portable terminal. 23. The client terminal according to claim 18, comprising a shared terminal installed in a public place. 24. An electronic device comprising a management server capable of communicating with each other through a network, receiving a request for lending of digitized work data, and lending the digitized work data based on the request. In a digitized copyrighted work data lending system, a lending basic information acquisition program for acquiring information necessary for lending of digitized copyrighted work data, wherein a user who requests lending of digitized copyrighted work data is provided. Enter the user identification information to be identified, the copyrighted work data information for searching or specifying the digitized copyrighted work data, and the loan period of the digitized copyrighted work data requested by the user. And a step of transmitting the input information to the management server. 25. An electronic device which includes a management server capable of communicating with each other through a network, receives a request for lending of digitized copyrighted work data, and lends the digitized copyrighted work data based on the request. A program for acquiring information necessary for lending of digitized copyrighted work data in a digitized copyrighted work data lending system, and a user who identifies a user who requests lending of digitized copyrighted work data Inputting identification information, copyrighted work data information for searching or specifying the digitized copyrighted work data, and a loan period of the digitized copyrighted work data requested by the user; Transmitting the input information to the management server; and a computer-readable recording medium recording a rental basic information acquisition program. 26. A client terminal and a key data management server for issuing key data capable of decrypting encrypted copyrighted data through a network are connected to each other so as to be able to communicate with each other to lend electronically copyrighted copyrighted data. A management server constituting a digitized copyrighted work data lending system for receiving a request and lending the copyrighted work data based on the request, wherein the computerized server is inputted from the client terminal through the network. User identification information for identifying a user who requests lending of copyrighted work data, copyrighted work data information for specifying the copyrighted work data, and a lending period of the copyrighted work data requested by the user. Receiving means for receiving; second transmitting means for transmitting the information received by the receiving means to the key data management server; Encrypted data obtaining means for obtaining encrypted copyrighted work data; and key data obtaining means for connecting to the key data management server through the network to obtain key data capable of decrypting the encrypted copyrighted work data. And a third transmitting unit that transmits the encrypted copyrighted work data and the key data to the client terminal. 27. The work data rental management server according to claim 26, wherein the network is the Internet. 28. The copyrighted work data lending management server according to claim 26, wherein the network is the Internet via a wireless modem or a wired modem. 29. The client terminal according to claim 26, wherein the client terminal is a personal computer.
The copyrighted work data lending management server according to 7 or 28. 30. The copyrighted work data lending management server according to claim 26, 27 or 28, wherein the client terminal is a portable terminal. 31. The client terminal according to claim 2, wherein the client terminal is a shared terminal installed in a public place.
The copyrighted work data lending management server described in 6, 27 or 28. 32. A rental terminal for electronic work data, comprising a client terminal capable of communicating with each other through a network and a key data management server for issuing key data capable of decrypting encrypted work data. In a computerized work data lending system for accepting a request and lending the work data based on the request, a program executable by a computer for lending the computerized work data, User identification information input from the client terminal through the network for identifying a user who requests lending of digitized copyrighted work data, copyrighted work data information for specifying the copyrighted work data, A loan period of the copyrighted data requested by the user, a step of receiving, and the received information is stored in the key data management. Transmitting the encrypted work data to the key data management server through the network to decrypt the encrypted work data. And a step of transmitting the encrypted copyrighted work data and the key data to the client terminal. 33. A client terminal capable of communicating with each other through a network and a key data management server for issuing key data capable of decrypting encrypted copyrighted work data. In a computerized work data lending system for accepting a request and lending the work data based on the request, a program executable by a computer for lending the computerized work data, User identification information input from the client terminal through the network for identifying a user who requests lending of digitized copyrighted work data, copyrighted work data information for specifying the copyrighted work data, A loan period of the copyrighted data requested by the user, a step of receiving, and the received information is stored in the key data management. Transmitting the encrypted work data to the key data management server through the network to decrypt the encrypted work data. And c. Transmitting the encrypted copyrighted work data and the key data to the client terminal. 34. A computerized work which is communicably connected to a management server through a network, accepts a request for lending computerized work data, and rents the work data based on the request. A key data management server that constitutes a product data lending system, comprising: acquisition means for acquiring, from the management server through the network, copyrighted work identification information for identifying at least digitized copyrighted work data; Key data issuing means for issuing key data capable of decrypting the encrypted copyrighted work data identified by the object identification information; and fourth key data for transmitting the key data issued by the key data issuing means to the management server. A key data management server, comprising: 35. The key data management server according to claim 34, wherein said network is the Internet. 36. The key data management server according to claim 34, wherein the network is the Internet via a wireless modem or a wired modem. 37. A computerized work which includes a management server capable of communicating with each other through a network, accepts a request for lending of digitized work data, and lends the work data based on the request. In the product data lending system, a program executable by a computer that issues key data, and acquires, from the management server through the network, work identification information that identifies at least computerized work data. And a step of issuing key data capable of decrypting the encrypted copyrighted work data identified by the copyrighted work identification information; and transmitting the issued key data to the management server. A key data issuing program characterized by the following. 38. An electronic work including a management server capable of communicating with each other through a network, accepting a request for lending of digitized work data, and lending the work data based on the request. In the product data lending system, a program executable by a computer that issues key data, and acquires, from the management server through the network, work identification information that identifies at least computerized work data. And a step of issuing key data capable of decrypting the encrypted copyrighted work data identified by the copyrighted work identification information; and transmitting the issued key data to the management server. A computer-readable recording medium recording a data issuing program.