JP2003337894A - Portable terminal, distribution server, provision server, system and method for distributing electronic book - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance convenience in the case of using an electronic book by enabling the acquisition of the electronic book by every constitutional unit. <P>SOLUTION: This portable terminal 20 is provided with an electronic book coupon storage part 22, a book data reception part 24, an electronic book coupon reduction part 25, and a book data decryption part 26. The electronic book coupon storage part 22 stores an electronic book coupon to be used for acquisition of book data including a plurality of pieces of page data with a decryption key to be used for decryption of a plurality of pieces of the page data. The book data reception part 24 receives the book data from an electronic book provision server 30. The electronic book coupon reduction part 25 reduces an electronic value of an amount according to the page data the reading of which is requested from the electronic book coupon. The book data decryption part 26 decrypts the page data by every piece of the page data by using the decryption key in accordance with reduction of the electronic value. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, a distribution server, a providing server, an electronic book distribution system, and an electronic book distribution method.

[0002]

2. Description of the Related Art Recently, an electronic book (also referred to as an electronic book (trademark)), which is superior in portability and searchability as compared to a paper medium book and capable of recording voice, has been put into practical use. An electronic book is a personal computer or PDA (Personal Digit).
al Assistance) is a computerized book that can be subscribed to using terminals such as. Electronic books are roughly classified into two types according to the form of provision, and are classified into a package type in which book data is stored in a recording medium such as a CD-ROM and an FD, and a network type in which transmission / reception is performed via a network such as the Internet. is there.

In particular, the following operation forms are mainstream for network type electronic books. That is, the user of the mobile terminal purchases the electronic book ticket from the distribution server managed by the book ticket issuing company. Subsequently, the user downloads the desired electronic book to the mobile terminal from the providing server managed by the publisher of the electronic book, using the purchased electronic book coupon. The mobile terminal displays the downloaded electronic book, and the user subscribes to it.

[0004]

However, in the above-mentioned prior art, since electronic books are distributed in book units (book units), royalties and sales fees corresponding to the number of sold books are easy, but as shown below. There was a problem. That is, it has been impossible to download and subscribe to an electronic book in units of constituents desired by the user (such as page units or chapter units). For example, there is a case where the user cancels the subscription midway though all pages of the electronic book have been downloaded before the subscription. In such a case, even a page that the user has not yet subscribed to is charged, and the electronic book coupon is wasted.

In view of the above problems, the present invention makes it possible to obtain electronic books for each constituent unit and improves the convenience when using electronic books. Portable terminals, distribution servers, providing servers, and electronic books. An object is to provide a distribution system and an electronic book distribution method.

[0006]

[Means for Solving the Problems] In order to solve the above problems,
A mobile terminal according to the present invention includes an electronic value storage unit that stores an electronic value used to acquire book data including a plurality of constituent unit data together with a decryption key used to decrypt the plurality of constituent unit data. A book data receiving unit that receives the book data from a providing server; and a unit data that is requested to be read in response to a read request for the unit unit data included in the book data that is received by the book data receiving unit. A reduction means for reducing the electronic value of the amount of money corresponding to the electronic value (atomic) of the amount of one constituent unit data from the electronic value, and a reduction of the electronic value of the amount of money according to the constituent unit data by the reduction means. Along with the above, the decryption key is used to decrypt the configuration unit data for each configuration unit data (atomic) And means.

Further, the electronic book distribution method according to the present invention is
A method for distributing electronic books in which a mobile terminal processes information,
An electronic value storing step of storing electronic value used for acquiring book data including a plurality of constituent unit data in a storage means together with a decryption key used for decrypting the plurality of constituent unit data; In response to the book data receiving step of receiving from the providing server and the read request of the structural unit data included in the book data received in the book data receiving step, the amount of money corresponding to the structural unit data requested to be read An electronic value is reduced from the electronic value for each electronic value of the amount of one constituent unit data, and the decryption key is accompanied by a reduction of the electronic value of the amount corresponding to the constituent unit data in the reducing process. And a structural unit data decoding step of decoding the structural unit data for each one of the structural unit data.

[0008] According to these inventions, the reduction processing for each unit data of the book data, that is, the charging is atomically performed. Therefore, the providing server can provide the electronic book to the mobile terminal for each constituent unit. Therefore, the user of the mobile terminal can subscribe only to desired constituent units (pages or chapters). Further, among the acquired book data, the subscription fee is not charged even for the constituent unit data that the subscriber does not want to subscribe to, and the waste of electronic value can be reduced. As a result, the convenience of using the electronic book is improved.

Further, the book data is encrypted for each constituent unit data which is its constituent element, and in order to decrypt each constituent unit data, the amount of money corresponding to the constituent unit data to be decrypted is set. Electronic value is necessarily reduced from electronic value. Therefore, charging is indispensable for decrypting and displaying the constituent unit data, and it is possible to prevent illegal copying and illegal charging of the constituent unit data.

In the portable terminal according to the present invention, preferably, an electronic value receiving means for receiving the electronic value together with the decryption key from a distribution server is further provided, and the electronic value storing means is received by the electronic value receiving means. The stored electronic value and the decryption key are stored.

The distribution server according to the present invention comprises electronic value transmitting means for transmitting the electronic value together with the decryption key to the above-mentioned portable terminal.

In the electronic book distribution method according to the present invention,
Preferably, the method further includes an electronic value receiving step of receiving the electronic value together with the decryption key from a distribution server, wherein the electronic value storing step includes the electronic value and the decryption key received in the electronic value receiving step. Store in storage means.

In the electronic book distribution method according to the present invention, preferably, the distribution server processes the information, and the electronic value is transmitted to the portable terminal together with the decryption key. The value transmission process is included.

According to these aspects, the electronic value transmitted from the distribution server is received by the portable terminal.
Therefore, the user of the mobile terminal can easily and quickly acquire the electronic value via the network.

Further, in the portable terminal according to the present invention, preferably, the book data receiving means receives the book data from the providing server for each unit of unit data.

Further, in the providing server according to the present invention,
Preferably, the book data transmitting unit transmits the book data to the mobile terminal for each unit of unit data.

Further, in the electronic book distribution method according to the present invention, preferably, in the book data transmitting step, the providing server transmits the book data to the portable terminal for each unit of unit data.

According to these inventions, the book data transmitted from the providing server to the portable terminal is not for each book but for each book.
It is received as data divided for each structural unit. Compared with terminal devices such as personal computers, mobile terminals have less available wireless resources and less data capacity that can be processed or stored at one time. Therefore, it is unrealistic to collectively download a large amount of data such as one book of data from the viewpoint of the communication load of the mobile communication network and the processing capacity of the mobile terminal. Therefore, by appropriately dividing the received book data, the communication load is reduced and
It is possible to realize data reception with a capacity commensurate with the processing capacity.

More preferably, the portable terminal according to the present invention further comprises a billing information transmitting means for transmitting the information for specifying the constituent unit data and the amount of money to the distribution server as billing information.

In the distribution server according to the present invention, it is preferable to identify the mobile terminal as the charge information receiving means for receiving the charge information from the above-mentioned mobile terminal and the charge information received by the charge information receiving means. Accounting information storage means for storing the information in association with the information.

In the electronic book distribution method according to the present invention,
More preferably, the method further includes a billing information transmitting step of transmitting, as billing information, the constituent unit data and information for specifying the amount of money to the distribution server.

Further, in the electronic book distribution method according to the present invention, more preferably, an electronic book distribution method in which a distribution server processes information, and a charging information receiving step of receiving the charging information from the above-mentioned portable terminal. , A billing information storing step of storing the billing information received in the billing information receiving step in a storage means in association with identification information of the mobile terminal.

According to these inventions, the billing information is transmitted from the portable terminal to the distribution server. The billing information is information including at least information for identifying the constituent unit data to be decrypted and information for identifying the amount of money to be reduced from the electronic value prior to the decryption of the constituent unit data. Therefore, the mobile terminal can easily notify the distribution server of the information necessary to appropriately distribute the profit generated by the distribution of the electronic book. As a result, the distribution server can appropriately distribute the profit to the distribution company, publisher, author, etc. of the electronic book based on the information.

In the distribution server according to the present invention, more preferably, the billing information receiving means for receiving the billing information from the above-mentioned portable terminal, and the billing information received by the billing information receiving means for each book data. Collection information storage means for storing as collection information in association with the collection amount,
Profit distribution means for distributing the collected amount at a predetermined ratio based on the collected information stored in the collected information storing means.

In the electronic book distribution method according to the present invention,
More preferably, it is an electronic book distribution method in which a distribution server processes information, and includes a billing information receiving step of receiving the billing information from the mobile terminal described above, and the billing information received in the billing information receiving step. A collection information storing step of storing the collection information in storage means in association with the collection amount of each book data, and a distribution of the collection amount at a predetermined ratio based on the collection information stored in the collection information storing step And a profit allocation step of performing.

According to these inventions, the collection amount is distributed based on at least the collection information in which the billing information transmitted from the portable terminal to the distribution server and the collection amount for each book data are associated with each other. . Since the collected amount is totaled for each book data, it is easy for the administrator of the distribution server to calculate the profit for returning to the author or provider of the book data (electronic book) and to specify the distribution destination. . The collection amount management for each book data, there are many book data that are distributed,
And if the author or publisher is different for each book data,
Especially effective. As a result, it is possible to simply and quickly perform appropriate profit distribution accompanying the circulation of book data.

In the portable terminal according to the present invention, preferably, the billing information transmitting means transmits the billing information to the distribution server in response to the electronic value charge request to the distribution server.

In the electronic book distribution method according to the present invention,
Preferably, in the billing information transmitting step, along with a request for charging the electronic value to the distribution server,
The billing information is transmitted to the distribution server.

According to these inventions, the billing information is:
It is transmitted from the mobile terminal to the distribution server along with the request for charging the distribution server with the electronic value. As a result, the profit distribution according to the electronic value used from the acquisition of the electronic value to the charge is reliably and collectively performed.

[0030] More preferably, the portable terminal according to the present invention further comprises charge information receiving means for receiving charge information for charging the electronic value from a distribution server, and the electronic value is the charge information receiving means. It is charged by the charge information received by.

In the electronic book distribution method according to the present invention,
More preferably, the method further includes a charge information receiving step of receiving charge information for charging the electronic value from a distribution server, and the electronic value is charged by the charge information received in the charge information receiving step. .

According to these inventions, the charge information transmitted from the distribution server is received by the portable terminal.
Electronic value is charged according to the received charge information. Therefore, when the balance of the electronic value becomes small, the user of the mobile terminal can purchase the desired electronic book by simply and quickly satisfying the electronic value via the network.

In the portable terminal according to the present invention, more preferably, the constituent unit data is page data. In the electronic book distribution method according to the present invention, more preferably, the constituent unit data is page data.

According to these aspects of the invention, the book data is reduced by the page data, that is, charged. Therefore, the providing server can provide the electronic book page by page. Therefore, the user of the mobile terminal can subscribe only to the desired page. That is, the user of the mobile terminal
It is possible to finely select a desired portion of the book data to subscribe. Further, among the acquired book data, the page data which is not desired to be subscribed is not charged, and the waste of electronic value can be reduced.
As a result, the convenience of using the electronic book is further improved.

In the distribution server according to the present invention, more preferably, the electronic value is an electronic book coupon. In the electronic book distribution method according to the present invention, more preferably,
The electronic value is an electronic book coupon. The electronic value may be electronic money or an electronic ticket in which a commuter pass, a ticket, etc. are converted into electronic data.

When a user of a mobile terminal purchases an electronic book, the electronic book is naturally expected to be purchased and is less likely to be illegally used than electronic money. Are often used. The distribution server can promote the sale of electronic books more safely and efficiently by distributing such electronic book coupons.

The providing server according to the present invention comprises book data transmitting means for transmitting the book data to the portable terminal described above. The electronic book distribution method according to the present invention is preferably an electronic book distribution method in which a providing server processes information, and includes a book data transmitting step of transmitting the book data to the mobile terminal described above.

The providing server according to the present invention preferably further comprises a book data encryption means for encrypting a plurality of constituent unit data included in the book data for each constituent unit data.

In the electronic book distribution method according to the present invention,
Preferably, the method further includes a book data encryption step of encrypting a plurality of constituent unit data included in the book data for each constituent unit data.

According to these aspects of the invention, the book data transmitted to the portable terminal is encrypted for each constituent unit data. Therefore, it is possible to secure high security in distributing the book data and to charge the electronic book for each constituent unit.

In the portable terminal according to the present invention, more preferably, the decryption key is used for decrypting a decryption key for decrypting the plurality of constituent unit data, and the constituent unit data decrypting means is With the reduction of the electronic value according to the structural unit data by the reduction unit, the decryption key is used to decrypt a decryption key for decrypting the configuration unit data for each one of the configuration unit data, and The constituent unit data is decoded for each constituent unit data.

More preferably, the providing server according to the present invention further comprises decryption key encryption means for encrypting a plurality of decryption keys for decrypting a plurality of constituent unit data included in the book data.

In the electronic book distribution method according to the present invention,
More preferably, the decryption key is used to decrypt a decryption key for decrypting the plurality of constituent unit data, and in the constituent unit data decrypting step, an electronic signal corresponding to the constituent unit data in the reduction step is used. With the reduction in value, the decryption key is used to decrypt a decryption key for decrypting the configuration unit data for each configuration unit data,
The constituent unit data is decrypted for each constituent unit data.

In the electronic book distribution method according to the present invention,
More preferably, it further includes a decryption key encryption step of encrypting a plurality of decryption keys for decrypting a plurality of constituent unit data included in the book data.

According to these inventions, the book data is encrypted for each constituent unit data which is its constituent element, and in order to decrypt each constituent unit data, the constituent unit data to be decrypted is to be decrypted. The electronic value of the amount corresponding to is inevitably reduced from the electronic value. Therefore, charging is indispensable for decrypting and displaying the constituent unit data, and it is possible to prevent illegal copying and illegal charging of the constituent unit data.

Not only the plural constituent unit data constituting the book data are encrypted, but also the plural decryption keys for decrypting the plural encrypted constituent unit data are the encryption keys. Each is encrypted by. That is, the constituent unit data transmitted / received between the providing server and the mobile terminal is doubly encrypted. Therefore, the security level for book data is further improved.

The electronic value storage means included in the portable terminal according to the present invention is composed of a tamper resistant device, and the constituent unit data decoding means includes the constituent unit data as one constituent unit inside the electronic value storage means. It is preferable to decrypt each data.

According to the present invention, a plurality of constituent unit data,
That is, the book data is decrypted inside the tamper resistant device for each one of the constituent unit data by using the decryption key stored in the tamper resistant device. Therefore, higher security can be ensured as compared with the case where decryption is performed inside application software such as dedicated browser software or hardware with an IC card reader.

The electronic value storage means included in the distribution server according to the present invention is composed of a tamper resistant device, and the electronic value includes the electronic value storage means and the electronic value storage means included in the portable terminal according to the present invention. It is preferable that data is transmitted and received between the distribution server and the mobile terminal in accordance with a communication protocol defined.

According to the present invention, the electronic value is defined between the distribution server and the mobile terminal between the electronic value storage means of the distribution server and the electronic value storage means of the mobile terminal. It is sent and received according to the communication protocol and always exists only in these storage units. Since each storage unit is a tamper resistant device, it is possible to prevent fraud such as leakage or tampering of data in the electronic value by a third party. As a result, high confidentiality and reliability of electronic value can be secured.

Further, it comprises the above-mentioned mobile terminal, the above-mentioned distribution server, and the above-mentioned providing server, and communicates between the mobile terminal and the distribution server and between the mobile terminal and the providing server. You may build and operate the electronic book distribution system which performs.

In the case of constructing and operating an electronic book distribution system, it is preferable that the decryption key is composed of the above-mentioned mobile terminal and the above-mentioned providing server, and is stored in the electronic value storage means included in the mobile terminal. ,
The key is different from the encryption key used by the book data encryption means included in the providing server for encryption.

According to the present invention, the key used to encrypt the book data is different from the key used to decrypt the book data. That is, the public key encryption method is adopted for encryption and decryption of book data. The public key encryption method is
Compared to the secret (common) key encryption method, it is less necessary to send the key via a secure path, so that the key management is easy and the security is high. Therefore, higher security can be secured for the book data.

[0054]

DETAILED DESCRIPTION OF THE INVENTION An electronic book distribution system according to the present invention will be described below with reference to the accompanying drawings. First,
The configuration will be described. FIG. 1 is a schematic diagram showing an example of the overall configuration of an electronic book distribution system 1 according to this embodiment.
As shown in FIG. 1, the electronic book distribution system 1 includes an electronic book coupon distribution server 10 (corresponding to a distribution server), a mobile terminal 20 (corresponding to a mobile terminal), and an electronic book providing server 30.
(Corresponding to the providing server).

The mobile terminal 20 is connected to the electronic book coupon distribution server 10 via the base station B and the network N, and the mobile terminal 20 and the electronic book coupon distribution server 10 are connected.
And can exchange data with each other. Similarly, the mobile terminal 20 is connected to the electronic book providing server 30 via the base station B and the network N, and the mobile terminal 20
And the electronic book providing server 30 can exchange data with each other.

Next, the hardware configuration of each terminal device constituting the electronic book distribution system 1 will be described. Figure 2
FIG. 3 is a hardware configuration diagram of the electronic book coupon distribution server 10. The electronic book coupon distribution server 10 includes a CPU 10a, R
A memory 10b such as an AM (Random Access Memory), a storage device 10c such as a hard disk, a transmission / reception device 10d such as a communication card that transmits and receives data to and from the mobile terminal 20, an input device 10e such as a keyboard and a mouse, a display and the like. The display device 10f is provided.
Further, the CPU 10a, the memory 10b, the storage device 10c,
Transmitting / receiving device 10d, input device 10e, display device 10f
Are electrically connected via the bus 10g so that various signals can be input and output.

Next, the hardware configuration of the portable terminal 20 will be described with reference to FIG. FIG. 3 shows the mobile terminal 2.
It is a hardware block diagram of 0. The mobile terminal 20 includes a control device 20a, an input device 20b, a RAM 20c, a display device 20d, a storage device 20e, a wireless communication device 20f, and a voice processing device 20g. Further, these devices are electrically connected to each other by a bus 20h, and various signals can be mutually transmitted and received.

Since the portable terminal 20 is a terminal forming a main part of the electronic book distribution system according to the present invention,
The hardware configuration of each device will be described in more detail. The control device 20a reads the program stored in the storage device 20e into the RAM 20c, and centrally controls each unit according to the program. That is, the control device 2
0a is the input signal from the input device 20b and the RAM 20c.
Various processes such as an electronic value reduction process from the electronic book coupon and a process of decrypting the book data are executed according to the program read out in step S1, and the process results are temporarily stored in the RAM 20c. Then, the processing result stored in the RAM 20c is stored in a predetermined area inside the storage device 20e as necessary.

The input device 20b is provided with various operation buttons for instructing ON / OFF of the power source, selection of functions, etc., and these various operation buttons are pressed individually or in combination to change the instruction content. The corresponding input signal is output to the control device 20a.

RAM (Random Access Memory) 20c
Is composed of a volatile semiconductor memory, and the control device 2
In various processing executed by 0a, a program or data read from the storage device 20e described later is temporarily stored. Further, the RAM 20c is a display device 20d.
VRAM (Vide that temporarily stores the data displayed on
o RAM) function is also included.

The display device 20d is an LCD (Liquid Cryst).
al Display), EL (Electro Luminescence), etc., and displays display data on the screen according to a display signal input from the control device 20a.

The storage device 20e is an EEPROM (Electr
It is configured by a non-volatile semiconductor memory such as an Erasable and Programmable ROM (ROM) and stores data necessary for executing various processes, data generated as a result of executing various processes, and the like. In addition, the storage device 20e is an IC (Inte
grated Circuit) card 21e is detachably provided. I
The C card 21e can store an electronic book coupon described later.

The radio communication device 20f controls radio communication with the base station B. Specifically, the wireless communication device 20f is
A circuit having a modulation / demodulation unit (not shown) that modulates and demodulates a signal, and a codec unit (not shown) that encodes and decodes the signal, and includes an antenna A. Antenna A
Is provided on the upper part of the housing of the mobile terminal 20 so as to be expandable and contractible, and transmits and receives radio waves to and from the base station B.

The voice processing device 20g is composed of a converter, an amplifier and the like, and includes a microphone M and a speaker S. During a call, the voice processing device 20g converts voice data input from the control device 20a into an analog signal by a converter (not shown), and outputs the sound from the speaker S via an amplifier (not shown). Also, the voice processing device 20g is
The converter converts the audio signal input from the microphone M into a digital signal and outputs the digital signal to the control device 20a.

The hardware configuration of the electronic book providing server 30, which is also a component of the electronic book distribution system 1, is the same as the hardware configuration of the electronic book coupon distribution server 10. Therefore, the components of the electronic book providing server 30 are denoted by the same reference numerals as those of the components of the electronic book coupon distribution server 10, and the illustration and detailed description thereof are omitted.
That is, the electronic book providing server 30 includes the CPU 30a,
A memory 30b, a storage device 30c, a transmission / reception device 30d, an input device 30e, and a display device 30f are provided, and these devices are electrically connected via a bus 30g so that various signals can be input / output.

FIG. 4 is a system configuration diagram showing the functional configuration of the electronic book distribution system 1 according to this embodiment.
As shown in FIG. 4, the electronic book coupon distribution server 10 includes an electronic book ticket storage unit 11, an electronic book ticket transmitting unit 12, a charging information receiving unit 13, a collection information DB (Data Base) 14,
It has a charge information transmission unit 15 and a profit distribution processing unit 16. The electronic book ticket distribution server 10 is a server device managed by an electronic book ticket distribution company that sells electronic book tickets in a prepaid system.

Hereinafter, in order to clearly distinguish between a book and a page which is a constituent unit of the book, the former is converted into electronic data and is referred to as “book data”, and the latter is converted into electronic data as “page data”. Is written. That is, the book data is composed of a plurality of page data. The constituent units of the book, which are individually converted into electronic data, are not limited to pages, but may be chapters or paragraphs.

The electronic book coupon storage unit 11 stores electronic book coupons as electronic value. The electronic book coupon storage unit 11 is preferably configured by a tamper resistant device equivalent to an IC card from the viewpoint of confidentiality and reliability of data in the electronic book coupon. The electronic book coupon is used to acquire book data including a plurality of page data as a plurality of constituent unit data. In addition, the electronic book coupon has a decryption key for decrypting a plurality of encrypted page data, and balance information indicating the balance of electronic value. In the preferred embodiment, the electronic voucher is digitally signed to identify its origin.

The electronic book coupon transmission unit 12 transmits the electronic book coupon read from the electronic book ticket storage unit 11 to the mobile terminal 20 in response to a request from the mobile terminal 20.

The billing information receiver 13 receives the billing information transmitted from the billing information transmitter 27 of the mobile terminal 20.
The billing information includes at least information for specifying page data and a billing amount for decrypting the page data. Hereinafter, the charging information received by the charging information receiving unit 13 will be described in detail with reference to FIG. FIG. 5 is a diagram showing a configuration example of the charging information 131 transmitted from the mobile terminal 20. As shown in FIG. 5, the charge information 131 includes an electronic book ID storage area 131a and a read page storage area 131b.
And a charge amount storage area 131c.

In the electronic book ID storage area 131a, identification information (for example, "00001", "00002", "0000" of the electronic book which the portable terminal 20 has acquired from the electronic book providing server 30.
4 ”) is stored as the“ electronic book ID ”. The electronic book ID is, for example, an International Standard Book Number (ISBN; International) that can specify the nationality, publisher, title, etc.
Standard Book Number).

The portable terminal 2 is stored in the read page storage area 131b.
0 is identification information of page data decrypted using an electronic book coupon (for example, "1, 2, 3, 4, 5", "1, 2, 3", "1,
Page numbers such as 2, 3, 4 "are stored as" read pages ".

In the charge amount storage area 131c, the portable terminal 2
0 is the amount data charged for the page data decrypted using the electronic book coupon (eg, “7.5”, “3.5”,
“6.0”, the unit is yen) is stored as the “charge amount”. This charge amount is an amount to be reduced from the electronic book coupon before the page data is decrypted, and is obtained by multiplying the page unit price of the corresponding electronic book by the already read page. For example, if the page unit price of the electronic book corresponding to the electronic book ID “00001” is 1.5 yen / page and the already-read pages are 5 pages of “1, 2, 3, 4, 5”, 1.5 × 5 = 7.5, the charge amount for the electronic book is calculated as "7.5 yen". As described above, the minimum unit of the charge amount may be less than 1 yen.

In the collection information DB 14 (corresponding to the collection information storage means), the billing information received by the billing information receiving section 13 is stored as "collection information" in association with the billing date and the collection amount. . Here, the billing information is independent information for each user of the mobile terminal (that is, the subscriber of the electronic book), whereas the collection information is independent information for each electronic book.

FIG. 6 is a diagram showing an example of the structure of aggregate information regarding three mobile terminals including the mobile terminal 20. Hereinafter, the set information corresponding to the mobile terminal 20 will be representatively described with reference to FIG. 6. As shown in FIG. 6, charging information 141
The electronic book ID storage area 141a, the accounting date storage area 141b, the read page storage area 141c, the accounting amount storage area 141d, and the collection amount storage area 141e are included.

In the electronic book ID storage area 141a, the electronic book ID extracted from the electronic book ID storage area 131a of the charging information 131 described above is stored. The read page storage area 141c stores the read page extracted from the read page storage area 131b of the billing information 131. Furthermore,
The billing amount storage area 141d stores the billing amount extracted from the billing amount storage area 131c of the billing information 131.

In the charging date storage area 141b, information indicating the date when the corresponding electronic book was charged, that is, the date when the book data was decrypted (for example, "02.0
2.27 ”,“ 02.02.28 ”,“ 02.03.04 ”) is the“ billing date ”
Is stored as

In the collected amount storage area 141e, total amount data (for example, "18.0", ..., Unit is yen) charged for the corresponding electronic book is stored as "collected amount". . This collected amount is the total amount of money reduced from the electronic book coupon prior to the decryption of the corresponding page data, and corresponds to the sales amount of the electronic book. The collected amount is obtained by adding all the billing amounts stored in the billing amount storage area 141d. In the present embodiment, the electronic book ID
The charges corresponding to "00001" are "7.5 yen, 4.5 yen, 6.0"
Since it is "yen", the collection amount for the electronic book is "18.0
It is calculated as "yen".

The charge information transmission unit 15 includes the mobile terminal 20.
The charge information is transmitted to the mobile terminal 20 in response to the request from the user. The charge information is information in which an electronic value for satisfying the remaining amount of the electronic book ticket is recorded when the remaining amount of the electronic book ticket becomes small.

The profit distribution processing unit 16 uses the collection information DB 14
Based on the collection information stored in, the processing for distributing the collection amount for each book data at a predetermined ratio is executed. The distribution amount is determined by multiplying the collected amount by a predetermined distribution ratio with reference to a table in which the person to be distributed and the distribution ratio are associated with each other.

As shown in FIG. 4, the portable terminal 20 has an electronic book coupon receiving unit 21, an electronic book coupon storing unit 22, an electronic book request transmitting unit 23, a book data receiving unit 24, and an electronic book coupon reduction. It has a section 25, a book data decoding section 26, a charging information transmitting section 27, and a charge information receiving section 28.

The electronic book coupon receiving unit 21 receives the electronic book coupon transmitted from the electronic book coupon transmitting unit 12 of the electronic book coupon distribution server 10.

The electronic book coupon storage unit 22 stores the electronic book coupon received by the electronic book coupon receiving unit 21 in a predetermined area. The electronic book coupon stores a decryption key for decrypting the book data and balance information indicating the balance of electronic value. The electronic book coupon storage unit 22 is an IC card or an IC card so that the electronic book coupon can be distributed only between devices having a tamper resistance equal to or higher than that of the IC card from the viewpoints of data confidentiality and reliability. It is suitable to be constituted by a considerable tamper resistant device.

The electronic book request transmission section 23 transmits an electronic book transmission request to the electronic book providing server 30.

The book data receiving section 24 receives the book data transmitted from the electronic book providing server 30. The book data includes the electronic book ID described above.

In response to the read request for the page data included in the book data received by the book data receiving section 24, the electronic book coupon reducing section 25 electronically outputs the electronic value of the amount corresponding to the page data requested to be read. Reduce from the book coupon.

The book data decryption unit 26 decrypts the page data as the electronic value of the amount of money corresponding to the page data requested to be read is reduced by the electronic book coupon reduction unit 25 from the electronic book coupon. Turn into. The decryption is performed using the decryption key included in the electronic book coupon received by the electronic book coupon receiving unit 21.

The billing information transmitting unit 27 generates billing information corresponding to the decrypted page data in accordance with the transmission of the charge request to the electronic book coupon distribution server 10 and transmits it to the electronic book ticket distribution server 10. The charge request is transmitted in order to charge the electronic book voucher with a shortage of the electronic value, but it is not always transmitted when the balance of the electronic value becomes 0, and the timing of transmission is arbitrary. is there.

The charge information receiving unit 28 receives the above-mentioned charge information from the electronic book coupon distribution server 10.

As shown in FIG. 4, the electronic book providing server 3
0 is the book data storage unit 31 and the electronic book request receiving unit 3
2, a book data encryption unit 33, and a book data transmission unit 3
4 and. The electronic book providing server 30 is a server device managed by a publisher that issues electronic books, a sales agency that provides electronic books, or the like.

The book data storage unit 31 stores book data to be provided as an electronic book. In the preferred embodiment, the book data is digitally signed to identify its origin.

The electronic book request receiving unit 32 uses the mobile terminal 20.
The electronic book transmission request transmitted from the electronic book request transmission unit 23 is received.

The book data encryption unit 33 receives the electronic book transmission request from the electronic book request receiving unit 32, and then, for each page data, a plurality of page data included in the book data requested to be transmitted. Encrypt. Encryption is performed using an encryption key. The book data to be provided is
The page data may be encrypted in advance and stored in the book data storage unit 31. In this case, the book data encryption unit 33 is not necessarily an essential component in the providing server according to the present invention.

The book data transmitting section 34 transmits the book data requested to be transmitted to the portable terminal 20. It should be noted that the book data is not necessarily transmitted for each volume of data, but is transmitted as data divided into pages or chapters in response to a request from the user of the mobile terminal 20. May be. The mobile terminal 20 has less available wireless resources and a smaller data capacity that can be processed or stored at a time, as compared with a terminal device such as a personal computer. Therefore, it is unrealistic to collectively download a large amount of data such as one book of data from the viewpoint of the communication load of the mobile communication network and the processing capacity of the mobile terminal. Therefore, by appropriately segmenting the received book data, it is possible to reduce the communication load and to realize the data reception with a capacity commensurate with the processing capacity.

Next, the operation of the electronic book distribution system 1 according to this embodiment will be described, and also the electronic book distribution method according to the present invention will be described. In each process described below, the programs stored in the storage device 10c shown in FIG. 2, the storage device 20e shown in FIG. 3, and the storage device 30c are stored in the CPU 10a, the control device 20a, and the CPU 3
It is realized by being executed by each 0a.

FIG. 7 is a conceptual diagram showing the flow of information processing executed by the electronic book distribution system 1. First, when the portable terminal 20 requests the electronic book coupon distribution server 10 to transmit the electronic book coupon 50, the electronic book coupon 50 requested to be transmitted is read from the electronic book coupon storage unit 11. The read electronic book coupon 50 is transmitted to the mobile terminal 20 by the electronic book coupon transmitter 12. The transmitted electronic book coupon 50 is stored in the electronic book coupon receiver 21 of the mobile terminal 20.
(S1). Electronic book coupon 5 received
0 is stored in the electronic book coupon storage unit 22.

The electronic book coupon 50 transmitted / received in S1 includes
A decryption key A for decrypting the encrypted electronic book is included. The electronic book coupon 50 includes the electronic book coupon storage unit 11
And is received between the electronic book coupon storage units 22 according to the communication protocol defined in advance between the electronic book ticket distribution server 10 and the mobile terminal 20, and always exists only in each of these storage units. As described above, since each of these storage units is a tamper resistant device, it is possible to prevent fraud such as leakage or tampering of data in the electronic book coupon by a third party. As a result, high confidentiality and reliability of the electronic book coupon 50 can be secured.

When the mobile terminal 20 acquires the electronic book coupon 50, the user of the mobile terminal 20 can purchase the electronic book. When a user purchases an electronic book, the mobile terminal 2
0 electronic book request transmission unit 23 to electronic book providing server 3
0, an electronic book request is transmitted. The transmitted electronic book request is received by the electronic book request receiving unit 32 of the electronic book providing server 30 (S2).

When the electronic book request is received, the book data corresponding to the requested electronic book is stored in the book data storage unit 31.
Read from. The read book data 60 is encrypted by the book data encryption unit 33 using the encryption key A. The encryption process of the book data 60 is performed for each page data (S31 to S33).

In the present embodiment, a book consisting of three pages is assumed for convenience of explanation. Therefore, the book data 60
Is composed of first page data 61, second page data 62, and third page data 63. The encryption key A used for encryption is shown in FIG. 7 as a single encryption key.
A different encryption key may be used for each page data.

As a result of the encryption processing in S3, the book data 60
Is encrypted with the encryption key A, and “book data 60 × key A” is generated. Here, “X × Y” indicates data in which “X” is encrypted using “Y”. For example,
“Data × Key A” indicates data encrypted with the encryption key A. Book data 60 x key A is
The third page data is data encrypted using the encryption key A, respectively. Therefore, the book data x key A70 is
It is data composed of first page data × key A71, second page data × key A72, and third page data × key A73.

The book data × key A70 is transmitted to the portable terminal 20 by the book data transmitting section 34. The transmitted book data × key A70 is received by the book data receiving unit 24 of the mobile terminal 20 (S4). When there is a request to read at least one page data for the received book data × key A70, the electronic value of the amount of money corresponding to the page data requested to be read out is reduced by the electronic book coupon deduction unit 2
5 is reduced from the electronic book coupon 50.

When the electronic value deduction process is completed for the book data × key A70, the book data × key A70 is decrypted by the book data decryption unit 26 using the decryption key A included in the electronic book coupon 50. . Book data x key A7
The decryption process of 0 is performed for each page data similarly to the encryption process (S51 to S53).

It is desirable that the decryption process be executed inside the IC card as the electronic book coupon storage unit 22. I
Since the C card is a tamper resistant device, the page data is decrypted inside the tamper resistant device using the decryption key stored in the tamper resistant device. Therefore, higher security can be ensured as compared with the case where decryption is performed inside application software such as dedicated browser software or hardware with an IC card reader.

Next, the page data decrypted by the book data decryption unit 26 is the display device 20d shown in FIG.
Is displayed in a predetermined display area of and is used for subscription by the user of the mobile terminal 20.

The decryption process of the book data × key A70 is executed upon completion of the electronic value reduction process. In other words, unless the electronic value reduction process is completed, the book data ×
Key A70 is not decrypted. Therefore, the electronic book coupon 5
When the balance of the electronic value in 0 is smaller than the amount of the book data to be decrypted, the book data is not decrypted and the mobile terminal 20 cannot display the book data.
This limits the subscription of the electronic book by the user of the mobile terminal 20.

Therefore, when the user of the mobile terminal 20 continues to subscribe to desired book data, it is necessary to charge the electronic book coupon with an electronic value. The charging of the electronic value is started by the mobile terminal 20 transmitting a charging request to the electronic book coupon distribution server 10, and the charging information relating to the decrypted page data is stored in the charging information transmitting unit 27. It is transmitted to the electronic book coupon distribution server 10 together with the charge request (S6). The transmitted billing information is received by the billing information receiving unit 13, and is used to create the collection information as described above.

Therefore, when the user of the portable terminal 20 compensates for the shortage of the electronic value of the electronic book coupon,
The information about the electronic book subscribed by the user is inevitably reflected in the collection information DB. As a result, the profit distribution according to the electronic value used from the acquisition of the electronic book coupon to the charge is reliably and collectively performed.

As described above, according to the electronic book distribution system 1 of the present invention, when the book data 60 is decrypted, the portable terminal 20 is subjected to the reduction processing for each page data, that is, the charging. Therefore, the electronic book providing server 3
0 can provide an electronic book page by page. Therefore, the user of the mobile terminal 20 can subscribe only to a desired page in a desired book. Further, among the acquired books, the subscription fee is not charged even for the pages that the subscriber does not want to subscribe, and the waste of the electronic book coupon can be reduced. As a result, the convenience of using the electronic book is improved.

Further, the book data is encrypted for each page data, and before the decryption of each page data, the electronic value of the amount corresponding to the decrypted page data is reduced from the electronic book coupon. . Therefore, charging is indispensable for decrypting and displaying the page data, and it is possible to prevent illegal copying of the page data and illegal charging.

Further, the administrator of the electronic book coupon distribution server 10 easily refers to the electronic book ID stored in the collection information DB 14 to easily distribute the profit associated with the distribution of the electronic book coupon and the electronic book. Can be specified. Further, the administrator of the electronic book coupon distribution server 10 can easily and quickly calculate the amount of money distributed to each distribution destination among the above profits by referring to the money collection information stored in the money collection information DB 14.

For example, the above-mentioned profits are distributed to the three parties of the administrator of the electronic book coupon distribution server 10, the publisher of the electronic book, and the author of the electronic book, and the distribution ratios to the distributed persons are 3 respectively. In the case of 50%, 50%, and 20%, the collected amount corresponding to the electronic book is distributed to each of the distributed persons at a ratio of 3: 5: 2. If the administrator of the electronic book providing server 30 is different from the publisher of the electronic book, profit distribution is also performed to the administrator of the electronic book providing server 30.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to the accompanying drawings. Since the basic configuration of the electronic book distribution system in this embodiment is the same as the configuration of the electronic book distribution system 1 in the first embodiment, the same reference numerals are given to the respective components, and the description thereof will be omitted. The difference from the first embodiment will be described in detail. The electronic book distribution system 2 according to the present embodiment is different from the electronic book distribution system 1 according to the first embodiment in that the key for decrypting the book data is further encrypted and the key is decrypted by the decryption key. Be different.

The operation of the electronic book distribution system 2 in this embodiment will be described below with reference to FIG. 8, and the electronic book distribution method according to the present invention will also be described.
In each process shown below, the programs stored in the storage device 10c (see FIG. 2), the storage device 20e (see FIG. 3), and the storage device 30c are the CPU 10a and the control device 20.
It is realized by being executed by a and the CPU 30a.

FIG. 8 is a conceptual diagram showing the flow of information processing executed by the electronic book distribution system 2. The operation of the electronic book distribution system 2 in the present embodiment is similar to the operation of the electronic book distribution system 1 described in detail in the first embodiment in essential parts. That is, T1 and T shown in FIG.
2, T7 correspond to S1, S2, T6 shown in FIG. Hereinafter, T31 for performing processing different from that of the second embodiment
-T33, T41-T43, T5, T61-T63 are demonstrated.

That is, in T31 to T33, the book data 60 is encrypted for each page data 61, 62, 63.
In T41 to T43, the encrypted book data 6
A plurality of decryption keys A for decrypting 0 are encrypted by the encryption key B. As a result, book data x key A x key B8
0 is generated.

At T5, the book data × key A × key B80 is transmitted from the portable terminal 20 to the electronic book coupon distribution server 10 together with the plurality of decryption keys A. Book data x Key A x Key B8
0 is composed of page data × key A × key B 81 to 83, and a plurality of decryption keys A are added to each data and transmitted.

At T61 to T63, the portable terminal 20
To obtain the book data, book data x key A x key B8
0 is decoded. This decoding process is performed in stages. That is, first, the encryption key B is decrypted using the decryption key B possessed by the electronic book coupon 50, and the decryption key A and the book data x
Key A and are generated. Subsequently, the book data × key A is decrypted by using the generated decryption key A, and the book data is produced.

As described above, each of the plurality of page data forming the book data is encrypted. Further, the plurality of decryption keys A for decrypting the plurality of encrypted page data are each encrypted by the encryption key B. Further, the electronic book coupon 50 has a decryption key B for decrypting a plurality of encrypted decryption keys A. As a result, the page data transmitted and received between the terminals will be doubly encrypted, and the security level can be improved as compared with the system according to the first embodiment.

The aspects described in the above embodiments are preferable examples of the electronic book distribution system according to the present invention, and the present invention is not limited to these aspects. For example, in any of the above embodiments, the encryption key and the decryption key may be the same (secret key encryption method) or different (public key encryption method). However, to ensure higher security for book data,
It is preferable to adopt a public key encryption method in which key management is easier and security is higher than that of a secret (common) key encryption method.

Although the billing information is transmitted together with the charging request, the billing information may be transmitted at any timing and may be transmitted along with the electronic value reduction processing. For example, in the first embodiment, the first
~ Of the encrypted page data up to the third page, if there is a read request to the first page data x key A71 and the second page data x key A72, the electronic value of the two page data is the electronic book coupon. Will be reduced. Accordingly, the first of the book data 60
The billing information in which the page data 61 and the second page data 62 are described as already-read pages is transmitted to the electronic book coupon distribution server 10. Regarding the charging target of the charging information transmitted at this time, not only page data but also book data may be used.

Thus, the billing information is stored in the electronic book coupon distribution server 10 prior to the decryption of the book data (page data).
Therefore, all the billing information corresponding to the decrypted book data is reflected in the collection information DB. That is, there is no time lag between the decryption of the book data and the update of the collection information. Therefore, the administrator of the electronic book coupon distribution server 10 can always and appropriately distribute the profit based on the latest set information.

Further, in any of the above embodiments, the portable terminal 20 once receives one electronic book and executes the decryption process and the reduction process (billing process) page by page. It may be performed in page units including reception. That is, the user of the mobile terminal 20 designates the electronic book requested to be transmitted in page units (for example, P1 to P10 of the book X), and the electronic book providing server 30 instructs the mobile terminal 20 only the designated page data. Send. This prevents unnecessary page data from being transmitted / received when the page that the user of the mobile terminal 20 desires to subscribe to is predetermined. Therefore, it is possible to reduce the communication load associated with the consumption of wireless resources and save the storage area for book data.

Finally, a program for realizing the electronic book distribution technology according to the present invention and a computer-readable recording medium (hereinafter, simply referred to as “recording medium”) recording the program will be described. A recording medium causes a reading device provided in a hardware resource such as a general-purpose computer to cause a change state of energy such as magnetism, light, and electricity in accordance with the description content of a program, and to generate a signal corresponding to it. In the format, the description content of the program can be transmitted to the reader. As such a recording medium, for example, an IC card such as UIM, a magnetic disk, an optical disk, a magneto-optical disk, which is detachably mounted on a computer (including a mobile terminal, PHS, etc.), or fixed to the computer H built into
A non-volatile semiconductor memory such as a D (Hard Disk) or an integrally fixed firmware is applicable.

Further, a part or all of the above-mentioned program is transmitted from another device via a transmission medium such as a communication line,
It may be configured to be received and recorded by the communication means included in each terminal device according to the present invention. On the contrary, the program may be transmitted from each terminal device according to the present invention to another device via a transmission medium and installed.

[0126]

According to the present invention, the reduction processing, that is, the charging, is performed on the book data for each constituent unit data. Therefore, the providing server can provide the electronic book to the mobile terminal for each constituent unit. Therefore, the user of the mobile terminal can subscribe to only the desired constituent unit. Further, among the acquired book data, the subscription fee is not charged even for the constituent unit data that the subscriber does not want to subscribe to, and the waste of electronic value can be reduced. As a result, the convenience of using the electronic book is improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a hardware configuration of an electronic book distribution system.

FIG. 2 is a schematic diagram showing a hardware configuration of an electronic book coupon distribution server.

FIG. 3 is a schematic diagram showing a hardware configuration of a mobile terminal.

FIG. 4 is a conceptual diagram showing a functional configuration of an electronic book distribution system.

FIG. 5 is a diagram showing a configuration example of billing information transmitted from a mobile terminal.

FIG. 6 is a diagram showing a configuration example of aggregate information regarding a mobile terminal.

FIG. 7 is a conceptual diagram showing a flow of processing executed by the electronic book distribution system according to the first embodiment.

FIG. 8 is a conceptual diagram showing a flow of processing executed by the electronic book distribution system according to the second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic book distribution system, 10 ... Electronic book ticket distribution server, 13 ... Billing information receiving part, 14 ... Collection information DB, 20
... mobile terminal, 25 ... electronic book coupon reduction section, 26 ... book data decoding section, 27 ... billing information transmission section, 30 ... electronic book providing server, 50 ... electronic book ticket, 60 ... book data

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G06F 17/60 ZEC G06F 17/60 ZEC (72) Inventor Ken Sakamura 4-9-2 Osaki, Shinagawa-ku, Tokyo (72) Inventor Noboru Koshizuka 2-27-20 Nishikubo, Musashino-shi, Tokyo (72) Inventor Hiroshi Aono 2-11-1, Nagatacho, Chiyoda-ku, Tokyo NTT DoCoMo Inc. (72) Invention Kazuhiko Ishii 2-11-1, Nagata-cho, Chiyoda-ku, Tokyo NTT corporation docomo (72) Inventor Kensaku Mori 2-1-11-1 Nagata-cho, Chiyoda-ku, Tokyo NTT corporation In T. Docomo (72) Inventor Seto Hongo 2-11-1, Nagatacho, Chiyoda-ku, Tokyo Inside NTT Docomo, Inc.

Claims (34)

[Claims] 1. An electronic value storage unit for storing an electronic value used for obtaining book data including a plurality of constituent unit data together with a decryption key used for decrypting the plurality of constituent unit data, and the book. A book data receiving unit that receives data from a providing server, and an amount of money according to the structural unit data requested to be read in response to a read request for the structural unit data included in the book data received by the book data receiving unit. Reducing the electronic value of the electronic value for each electronic value of one constituent unit data from the electronic value, and using the decryption key according to the electronic value reduction by the reducing means according to the constituent unit data. And a constituent unit data decoding means for decoding the constituent unit data for each constituent unit data. 2. An electronic value receiving means for receiving the electronic value together with the decryption key from a distribution server, wherein the electronic value storing means includes the electronic value and the decryption key received by the electronic value receiving means. The mobile terminal according to claim 1, wherein the mobile terminal stores. 3. The portable terminal according to claim 1, wherein the book data receiving means receives the book data from the providing server for each unit of unit data. 4. The mobile terminal according to claim 1, further comprising a billing information transmitting means for transmitting the constituent unit data and information for specifying the amount of money as billing information to a distribution server. . 5. The mobile terminal according to claim 4, wherein the billing information transmitting means transmits the billing information to the distribution server in response to the electronic value charging request to the distribution server. 6. A charge information receiving unit for receiving charge information for charging the electronic value from a distribution server, wherein the electronic value is charged by the charge information received by the charge information receiving unit. The mobile terminal according to claim 5, wherein: 7. The mobile terminal according to claim 1, wherein the structural unit data is page data. 8. The electronic value storage means comprises a tamper resistant device, and the constituent unit data decoding means decodes the constituent unit data for each constituent unit data inside the electronic value storage means. The mobile terminal according to claim 1, wherein the mobile terminal is a mobile terminal. 9. The decryption key is used for decrypting a decryption key for decrypting the plurality of constitutional unit data, and the constitutional unit data decryption means is responsive to the constitutional unit data by the reduction means. As the electronic value is reduced, the decryption key for decrypting the constituent unit data for each constituent unit data is decrypted using the decryption key, and the constituent unit data is determined for each constituent unit data. 9. The mobile terminal according to claim 1, wherein the mobile terminal is decrypted. 10. An electronic value storage means for storing the electronic value together with a decryption key, and an electronic value transmission means for transmitting the electronic value together with the decryption key to the mobile terminal according to claim 2. Distribution server. 11. A billing information receiving unit that receives the billing information from the mobile terminal according to claim 4, and the billing information received by the billing information receiving unit in association with identification information of the mobile terminal. A distribution server comprising: charging information storage means for storing. 12. A billing information receiving unit that receives the billing information from the portable terminal according to claim 4, and the billing information received by the billing information receiving unit in association with a collection amount for each book data. And a profit distribution unit that distributes the collected amount at a predetermined ratio based on the collection information stored in the collection information storage unit. Distribution server. 13. The distribution server according to claim 10, wherein the electronic value is an electronic book coupon. 14. The electronic value storage means of the distribution server according to claim 10 is constituted by a tamper resistant device, and the electronic value is the electronic value storage means and the electronic value of the portable terminal according to claim 8. 11. The distribution server according to claim 10, wherein the distribution server transmits / receives to / from a storage unit according to a communication protocol defined between the distribution server and the mobile terminal. 15. A book data encryption unit for encrypting book data including a plurality of constituent unit data for each constituent unit data, and the book data encrypted by the book data encrypting unit. And a book data transmitting unit for transmitting the book data to the portable terminal described in 1. 16. The providing server according to claim 15, wherein the book data transmitting means transmits the book data to the portable terminal for each unit of unit data. 17. The decryption key encryption means for encrypting a plurality of decryption keys for decrypting a plurality of constituent unit data included in the book data, according to claim 15 or 16. Provision server. 18. The mobile terminal according to claim 1, and
The distribution server according to claim 0 and the providing server according to claim 15 are configured to perform communication between the mobile terminal and the distribution server, and between the mobile terminal and the providing server. E-book distribution system with. 19. The mobile terminal according to claim 1, and
5, the decryption key stored in the electronic value storage unit included in the mobile terminal, and the encryption key used for encryption by the book data encryption unit included in the provision server. The electronic book distribution system is characterized in that the keys are different keys. 20. An electronic book distribution method in which a mobile terminal processes information, wherein an electronic value used to acquire book data including a plurality of constituent unit data is used to decrypt the plurality of constituent unit data. An electronic value storing step of storing in a storage means together with a decryption key, a book data receiving step of receiving the book data from a providing server, and a unit data included in the book data received in the book data receiving step. In response to the read request, the electronic value of the amount of money corresponding to the structural unit data requested to be read is reduced from the electronic value for each electronic value of the amount of one structural unit data; In accordance with the reduction of the electronic value of the amount of money corresponding to the constituent unit data, the constituent unit data is decrypted for each constituent unit data by using the decryption key. And a constitutional unit data decoding step. 21. The electronic value together with the decryption key,
The electronic value receiving step of receiving from a distribution server is further included, and in the electronic value storing step, the electronic value and the decryption key received in the electronic value receiving step are stored in a storage means. 20. The electronic book distribution method described in 20. 22. In the book data receiving step, the mobile terminal receives the book data from the providing server for each unit of unit data.
The electronic book distribution method described in 1. 23. The electronic book according to claim 20, further comprising a billing information transmitting step of transmitting the constituent unit data and information for specifying the amount of money to a distribution server as billing information. Distribution method. 24. The electronic book distribution method according to claim 23, wherein in the billing information transmitting step, the billing information is transmitted to the distribution server in response to a request to charge the distribution server for the electronic value. . 25. The method further comprises a charge information receiving step of receiving charge information for charging the electronic value from a distribution server, wherein the electronic value is charged by the charge information received in the charge information receiving step. The electronic book distribution method according to claim 24, wherein: 26. The electronic book distribution method according to any one of claims 20 to 25, wherein the constituent unit data is page data. 27. The decryption key is used for decrypting a decryption key for decrypting the plurality of constitutional unit data, and in the constitutional unit data decrypting step, it corresponds to the constitutional unit data in the reduction process. With the reduction of electronic value,
A decryption key for decrypting the constituent unit data for each constituent unit data is decrypted using the decryption key, and the constituent unit data is decrypted for each constituent unit data. The electronic book distribution method according to any one of claims 20 to 26. 28. An electronic book distribution method in which a distribution server processes information, including an electronic value transmission step of transmitting electronic value together with a decryption key to the mobile terminal according to claim 2. Electronic book distribution method. 29. An electronic book distribution method in which a distribution server processes information, comprising: a billing information receiving step of receiving the billing information from the mobile terminal according to claim 4, and a billing information receiving step. The billing information
And a billing information storing step of storing the billing information in the storing means in association with the identification information of the mobile terminal. 30. A method of distributing electronic books, wherein a distribution server processes information, comprising: a billing information receiving step of receiving the billing information from the portable terminal according to claim 4, and a billing information receiving step. Based on the collection information stored in the storage means as the collection information in the storage means by associating the billing information with the collection amount for each book data, and the collection information stored in the collection information storage step A method of distributing an electronic book, comprising: a profit distribution step of distributing the collected amount by a ratio. 31. The electronic book distribution method according to claim 27, wherein the electronic value is an electronic book coupon. 32. An electronic book distribution method in which a providing server processes information, comprising: a book data encryption step of encrypting book data including a plurality of constituent unit data for each constituent unit data; An electronic book distribution method comprising: a book data transmitting step of transmitting the book data encrypted in the encryption step to the mobile terminal according to claim 1. 33. The electronic book distribution according to claim 31 or 32, wherein in the book data transmitting step, the providing server transmits the book data to the mobile terminal for each unit of unit data. Method. 34. The method according to claim 3, further comprising a decryption key encryption step of encrypting a plurality of decryption keys for decrypting a plurality of constituent unit data included in the book data.
The electronic book distribution method according to any one of 1 to 33.