JP2000113047A - Electronic book system, electronic bookcase and IC card - Google Patents

Abstract

(57) [Summary] [Problem] To supply a document using current electronic information, free copy is possible, and dedicated browser software can be distributed and copied free of charge, so besides relying on the moral of the user And has no way to prevent unauthorized copying of books. In addition, electronic information is in a normal file format, and all management must be managed by file management software on a personal computer.
No means is provided for managing the book as a whole. According to the present invention, in order to solve this problem,
The electronic book is encrypted by using the browsing key and distributed, and the purchaser of the electronic book obtains the electronic book information and purchases the browsing key for a fee. The browsing key is encrypted by the purchaser's personal public key, and cannot be used unless the purchaser has an IC card. In addition, an electronic bookshelf that exclusively manages electronic books is provided, on which electronic book purchase procedures and management of arrival of ordered electronic books are performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a book supply method and a book management method, and more particularly to electronic publishing for supplying a book as electronic information.

[0002]

2. Description of the Related Art Document supply using electronic information has already been used in various fields such as personal computer communication. The sale of books as electronic information is also carried out via personal computer communication and the Internet in the format of expanded books. With this special browser software, you can read books in the same format as real books with vertical writing and ruby, and you can lay out illustrations and photos.

[0003]

However, the electronic information according to the present method is in the form of a file of an ordinary computer, and can be freely copied. Also, since dedicated browser software can be distributed free of charge and copied, there is no way to prevent unauthorized copying of books other than relying on the morals of the user. In addition, electronic information is in a normal file format, and all management must be managed in the same line as other word processors and spreadsheet files using file management software on a personal computer. It has not been.

[0004]

According to the present invention, in order to solve this problem, electronic information of a book (hereinafter, referred to as an electronic book) is encrypted using a key dedicated to the book (hereinafter, referred to as a viewing key). The e-book purchaser obtains the e-book information and simultaneously purchases the viewing key for a fee. The browsing key is encrypted by the purchaser's personal public key, and cannot be used unless the purchaser has an IC card. In addition, an electronic bookshelf that exclusively manages electronic books is provided, on which electronic book purchase procedures and management of arrival of ordered electronic books are performed.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of an embodiment of an electronic book system according to the present invention will be described below with reference to the drawings. FIG.
FIG. 1 is an explanatory diagram showing a configuration of an electronic book system according to the present invention. Electronic bookstore 10020 transmits book information 10022 encrypted in a broadcast format to virtual bookshelf 10000. This information is in a broadcast format and can be freely intercepted and recorded. However, since the information is encrypted, it is impossible to browse the book unless a purchase procedure described later is taken. The purchaser holds the purchaser's personal IC card 10030,
The purchaser's own public key 10031 registered in advance is sent to the electronic bookstore 10020, and the browsing key is encrypted using the public key and sent (10021). The key purchase request is made using a network such as the Internet or personal computer communication, and the viewing key encrypted with the public key is sent in a broadcast format in the same manner as the network and book information (not shown). This will be described in detail with reference to FIG. The received viewing key 10021 is stored in the IC card 10030. The bookcase 10002 of the virtual bookshelf 10000 owned by the buyer,
Books that the buyer wants to purchase / purchased are lined up. For example, the table of contents information of the books that he / she wants to purchase is obtained in advance through a network or input to an IC card at a bookstore to be pre-loaded on the virtual bookshelf 10000. I have. As for books lined up on the bookshelf, there are only the above table of contents and two types of purchased books,
Even if an electronic book is pre-loaded on a virtual bookshelf in a broadcast format, it is not considered purchased unless the viewing key recorded on the IC card 10030 is inserted into the IC card slot 10001 of the virtual bookshelf. As a specific operation, after obtaining the browse key for a fee, inserting the IC card 10030 containing the browse key into the IC card slot of the virtual bookshelf 10000, the table of contents appears on the virtual bookshelf, and then the virtual bookshelf Monitors the book information sent by broadcasting, and when the information of the purchased book is sent,
For the first time, the book information is loaded on the virtual bookshelf, and when the loading is completed, the book is purchased. These operations may be performed on the virtual bookshelf with the IC card inserted into the IC card slot. Purchased e-books are performed in e-book viewer 10010. This is separate from the virtual bookshelf, and the encrypted electronic book may be copied and stored in its memory, or may be the virtual bookshelf itself. E-book viewer 10010 I
Insert an IC card into C card slot 10011
By decrypting the browsing key with the purchaser's own private key in the card and sending the decrypted browsing key to browsing software running on the e-book viewer, the book information encrypted by the e-book viewer Can be decrypted and browsed. Here, the viewing key on the e-book viewer is
Instead of on a fixed storage memory in the e-book viewer,
The presence of only the variables in the viewing software can prevent the reading of the viewing key from outside. In order to prevent eavesdropping while sending the browsing key, the electronic bookstore mentioned above
In the same way as sending the browsing key to the C card, the IC card encrypts the browsing key using the public key and sends it, and the browsing software in the electronic book viewer stores its own private key in its own memory. By decrypting the browsing key using the key, the browsing key can be handled safely.

[0006] Here, in the case of performing online shopping using electronic money or IC credit in an IC card for purchasing an electronic book, a transaction for online shopping processing is performed for the first time after confirming that the IC card has securely received a browse key. Is completed.
By performing in cooperation with both IC card and electronic bookstore,
It is possible to prevent the product and the price from passing each other. Specifically, for example, in the case where the reading key is sent from the electronic bookstore to the IC card after electronic settlement, the fact that loading of the viewing key from the electronic bookstore to the IC card is completed is indicated by I
By sending the card from the C card to the electronic bookstore, the electronic bookstore completes the first electronic settlement transaction. If the order of payment and viewing key is reversed,
Even if the IC card receives the browsing key and sends a message to the electronic bookstore that the browsing key has been received, use this browsing key as long as the payment transaction completion message does not come from the electronic bookstore. Is executed in the IC card. At the same time, the electronic bookstore does not complete the settlement transaction unless a message is received from the IC card indicating that the viewing key has been received. The choice of which method is a practical choice,
From the customer's point of view, it is advantageous to settle after receiving the browsing key first, but in the present invention, only when both parties have acknowledged that the reception and settlement of both browsing keys have been completed, the sales transaction will be started for the first time. If the accident occurs, for example, if the line is interrupted in the middle of the processing, the transaction will not be completed in that case, and the processing will all return to a blank sheet, so the customer and the sales side will be unilaterally damaged. I will not receive it.

FIG. 2 shows an electronic book system according to the present invention.
FIG. 9 is an explanatory diagram showing a form of movement of electronic book information and a viewing key. As a first example, when the browsing key 20000 and the book 20010 encrypted with the purchaser's public key are supplied separately as described in FIG. 1, the encrypted browsing key is provided via an IC via a network. Stored on card 20066. The book 20010 encrypted with the browsing key is stored in a non-volatile recording medium such as the HDD 20040 in the virtual bookshelf shown in FIG. Since the book 20010 is encrypted as described in FIG. 1, it can be freely copied to other virtual bookshelves or personal computers, but cannot be viewed by anyone other than the buyer who paid the fee and obtained the key. You can keep the copyright of the book.
As a second example, an encrypted book 20020 and an encrypted browsing key 20030 are bundled and distributed. In this case, book 2
The 0020 and the viewing key 20030 are stored in the HDD 20050 as one set. In this case, the IC card does not need to have a browsing key, but an IC card is needed to decrypt the browsing key, as in the first example. This set can also be copied to another virtual bookshelf or personal computer like the above-mentioned book 20010, but since the browsing key can not be decrypted without the purchaser's IC card,
Reading of the book becomes impossible, and the copyright of the book can be maintained. The electronic book viewer 20080 has an electronic book copied from a virtual bookshelf in a built-in storage medium, and an IC card inserted into the electronic book viewer 20080 is used to read an IC card.
The browsing key decrypted in the card is placed on the memory of the electronic book viewer (20081), and the electronic book is decrypted and browsed using this. Since the decrypted key exists only as an internal variable during the execution of the electronic book browsing program, it cannot be read from other sources. As in the above two examples, since the electronic book information itself can be freely copied, the purchaser makes a copy in advance to a viewer who may read the book, and when the user wants to read the book, the purchaser's own IC card By inserting a, you can save the trouble of copying the full text every time you read it, and prepare a mechanism that can only be read by the purchaser, so that the copyright of the book can be reliably protected. In addition, the structure of the electronic book viewer 20080 can be improved by, for example, erasing the internal memory at the moment when the lid is opened, or performing the decryption processing of the electronic book with the reading key in a one-chip IC, so that the tamper resistance (mischief) is improved. And secure copyrights.

[0008] Here, the encrypted electronic book in the HDD is free to be copied. For example, Mr. A purchased this electronic book, read it, and was interested in it. When the electronic book is copied to Mr. B, the information of the copied electronic book is added to the information of Mr. A as shown in FIG.
Is added, the electronic bookstore reads the ID of Mr. A attached to the purchase request information from Mr. B when Mr. B purchases the key to read the encrypted electronic book. It is possible to set up a mechanism to pay a referral fee to Mr.

FIG. 3 is a chart showing a procedure for purchasing and browsing the electronic book system according to the present invention. Left column (30000-30050) shows buyer behavior, right column (30100-301)
40) shows the operation of the electronic bookstore. First, the purchaser designates a book to be purchased (30000), and sends book designation information 30001 to an electronic bookstore. The electronic bookstore prepares a reading key for the specified book. Next, the purchaser sends his / her user public key 30011 to the electronic bookstore (30010). The electronic bookstore receives the user public key (30110), and encrypts the viewing key of the book using the public key (30120). Then, the encrypted viewing key 30021 is
Sent via the Internet as shown in FIG. 2 (30130),
The encrypted book 30141 is sent in a broadcast format (30140). At this time, as shown in FIG. 2, the encrypted browsing key 30021 and the encrypted book 30141 may be sent as a set in a broadcast format, and when the purchaser issues a special delivery request (not shown) at the time of purchase, , Encrypted book 301 with encrypted viewing key 30021
41 may be sent over the Internet. The purchaser receives the encrypted browsing key (30020) and receives the encrypted book (30030). Here, the encrypted browsing key sent over a network such as the Internet is immediately delivered to the buyer, but encrypted books sent in broadcast format are, for example, one book is broadcast once a day, The receiving side constantly monitors the broadcast, and starts receiving when the broadcast of the specified book has started. As a result, the book will arrive at the buyer within 24 hours after the purchase request is made.

FIG. 4 is a first example showing the configuration of an IC card used in the electronic book system according to the present invention. IC
The card 40000 is rooted at MF (Master File)
It has a plurality of DFs (Dedicated Files) below it,
Reference numeral 1 denotes an electronic book, and DF2 denotes, for example, electronic money. Below the DF1, there is an EF (Elementary File), which describes information related to the electronic book. EF1
Has a user ID, and a public key and a secret key. E
F2 contains information indicating the book IDs to be purchased / purchased and the contents of the table of contents. As will be described later with reference to FIG. 6, the table of contents information makes it possible to purchase an electronic book to be purchased by chapter instead of collecting the entire text. In EF3, the browsing keys corresponding to these books are described. The books of book ID1 and ID3 have already been purchased and therefore have a corresponding browse key, but book id2 has no browse key since it is before purchase. The book ID and the table of contents information store in advance book information that has been checked in advance, for example, via an IC card terminal of a bookstore or the Internet.

This card may be a memory card as long as the DF name or EF name is not disclosed, but DF1 is a program, and when a specific command is input from the outside, the public key or book ID is read or viewed. And decrypt the key. This specific command is executed only by the dedicated viewer software, so that the confidentiality of the internal information of the IC card can be maintained. In FIG. 4, the public key and the private key of the purchaser are described below the DF1 for exclusive use with the electronic book. However, this key can be used as a general-purpose key other than the electronic book by the purchaser. May be described in a place like

FIG. 5 is a second example showing the configuration of an IC card used in the electronic book system according to the present invention. IC
The configuration inside the card 50000 is the same as that in FIG. 4, and the description of the configuration is omitted. Here, the table of contents information described in the EF2 of FIG. 4 is used, and in the embodiment of FIG.
er). The table of contents information shown in FIG. 4 makes it possible to purchase an e-book to be purchased in chapters, rather than in whole sentences, but because of its large capacity,
A burden is imposed on the memory capacity of the C card. So here U
RL is inserted, and in the actual purchase operation, a purchase request is made while looking at the home page showing the table of contents information when purchasing by chapter.

FIG. 6 shows a first embodiment of the electronic book system according to the present invention, showing a menu screen for purchasing an electronic book by chapter. The screen for purchasing an electronic book is shown using the screen of the electronic book viewer 60000. The table of contents 60010 shown in FIGS. 4 and 5 is displayed on the screen.
Documents can be purchased in chapter units, not in full text units. There is a check box on the table of contents, check the check box 60020 above the title to purchase the full text,
By checking the check box 60021 for each chapter, only the corresponding chapter can be purchased.

FIG. 7 is an explanatory diagram showing a first example of a method of displaying before and after book purchase in the electronic book system according to the present invention. Reference numerals 70100 to 70040 show the covers of the electronic book before and after the purchase on the screen of the electronic bookcase. Here, 70010 to 7030 indicate that the product has not been purchased, and 70040 indicates that the product has been purchased. That is, hatches 70021 are provided in 70010 to 70030, indicating that this electronic book has not been purchased. Although hatching is used in this embodiment, for example, a method of changing the cover color before and after purchase or flashing the cover is also possible, so that the cover before purchase and the cover after purchase are visually different. It just needs to be. When browsing a purchased book, insert the IC card into the e-book viewer to display the bookshelf shown in the figure. By selecting the purchased e-book, the table of contents for that book is displayed and further displayed in the table of contents. The user can select a purchased chapter or display a document, and browse through the pages of the book by operating a page switching button (not shown).

FIG. 8 is an explanatory diagram showing a second example of a method of displaying before and after book purchase in the electronic book system according to the present invention. Visually distinguishing the cover of the electronic book before and after the purchase is similar to that described with reference to FIG.
Although the description here is omitted, the present embodiment will be described as a first example of displaying a purchase status when an article of each electronic book is purchased in chapter units. 80030 and 8040 indicate purchased e-books, but the level meter 80041 described
The number indicates how many chapters of the book were purchased. In 80040, four chapters have been purchased.
When an additional purchase was made, 80061 indicates that the unpurchased one has purchased two chapters, and 80070 has purchased only one chapter, but has purchased three additional chapters Indicates that And 80080 indicates that you have purchased all chapters of the book, that is, the full text. In this case, the level meter is 80081, which is different from the level meter that displays the number of purchased chapters.

FIG. 9 is an explanatory diagram showing a third example of a method of displaying before and after book purchase in the electronic book system according to the present invention. The present embodiment will be described as second and third examples of displaying the purchase status when articles of each electronic book are purchased in chapter units. 90020 and 90030 indicate e-books for which only some chapters have been purchased, and 90040 indicates e-books for which full text has been purchased. Each of the indicated level meters displays a level meter as small as the number of purchased chapters in a large frame indicating the number of all chapters, and indicates how many chapters of the book have been purchased. In 90021, two chapters have been purchased, which indicates that about half of all chapters have been purchased. In 90041, the frame indicating the number of all chapters is filled, indicating that all chapters have been purchased. Also, 90060 to 90080 represent the number of all chapters and the number of purchased chapters by numbers, for example, 90061 has purchased 2 chapters out of 5 chapters in total, and 90081 has 4 chapters out of 4 chapters in total It indicates that all were purchased.

FIG. 10 shows an embodiment of the electronic book system according to the present invention showing a menu screen for purchasing an electronic book by chapter. The table of contents 100000 includes the name of each chapter and a check box 100010. Here, the first and second chapters are selected. Next to it is a price list 100020, which shows the purchase price for each chapter. When the user checks the check box and makes a purchase request, a purchase total alloy amount (not shown) may be displayed to ask the purchaser for confirmation.

The table of contents 100030 is not a table of contents of the electronic book but a thumbnail 100040 showing a page layout image.
This is an example displayed with. For example, if you read a paper book before and discarded the book, but when you need a particular article again, an e-book that can be purchased by chapter is useful. However, although you have forgotten what the title of the article is, you often remember the image of the page when you turned the book. In the present embodiment, a thumbnail showing a page image is displayed when purchasing an electronic book in chapter units so that a necessary article can be easily selected. The point that the chapter with the check box 100040 checked is purchased is the same as in the above-described embodiment.

FIG. 11 is an explanatory diagram showing a method of providing a menu screen for purchasing an electronic book in chapter units in the electronic book system according to the present invention. Since the table of contents information and the thumbnail information shown in FIG. 10 have a certain size or more, it is not efficient to store them in the limited memory of the IC card. Therefore, the table of contents information and the thumbnail information are disclosed as a homepage on the Internet, and the URL 110020 of the homepage is described in the IC card 110000 as shown in FIG. In addition, for example, a bar code 110010 indicating this URL is described in a book catalog or a purchased paper book itself, and by reading out the bar code 110010, a table of contents / purchase page 110030 is called by an electronic bookshelf or a personal computer. By checking a check box as shown in FIG. 10, an electronic book can be ordered via the Internet. This UR
For example, L is described in a form that is coded and converted directly into a character string or a number on a page of a book or a catalog of a book, and the same applies when inputting this using a method of reading with a scanner attached to a pen tip, for example. It is clear that this result is obtained.

FIG. 12 is an explanatory diagram showing a method of purchasing a right to refer to a document being viewed in the electronic book system according to the present invention. The information purchased by the electronic book system according to the present invention can be read only through a dedicated browser, thereby preventing unauthorized copying and alteration and securing the copyright. However, there may be a need in information to refer to and use a part of the information, such as an academic journal or a newspaper article. In the present embodiment, a method for enabling a copy service of electronic book information for a fee will be described.
If you want to save the information displayed on the viewer screen 120000, for example, in full text and use it for other purposes, click the save full text button.
If it is desired to use 120010 or only the text part, the user presses a text part save button 120020. For example, when the text part save button 120020 is pressed, a charge confirmation screen 120100 is displayed, and the entire text document can be saved to a file or a clipboard by remittance via the Internet at a price of 100 yen. Further, although not shown, by selecting a required range on the viewer screen with a cursor and pressing a text part save button, it is also possible to operate such that a document is diverted to another by charging, for example, in units of characters.

FIG. 13 is a table showing the level classification of the right to refer to the document being browsed by the electronic book system according to the present invention. In this embodiment, the level of the right is Level-0 to Lev
El-4 is categorized into five levels, and it is operated in such a way that different fees are paid as differences when e-publishing default values and right levels are raised. Here, the composition of the body of the e-book is described as (1) text, (2) figures and tables,
(3) Image, (4) classify into four of the page layout itself, Le
vel-0 makes it impossible to refer to all of them (only visual reading is possible with a dedicated viewer). When the hardware of the viewer is a personal computer or the like, the acquisition of information by hard copy is the same as that of copying a current paper book, or the dedicated viewer sets the protection of hard copy prohibition to OS (Oper).
ating System) to prohibit information acquisition,
Either one can be selected depending on the system on which the viewer runs. Level-1 is a level at which only text documents can be referenced, and specifically gives the right to upload text as a character string to a copy buffer or a specific file. Level-2 is a level at which only text documents and figures / tables can be referred to. Specifically, figures / tables are given the right to be uploaded to a copy buffer or a specific file as graphic data. Level-3 gives you the right to refer to images as well as figures and tables. And
Level-4 gives the right to save all pages with a format, specifically, a formatted document such as a word processor such as rtf (Rich Text File). An e-book to be sold is published in a state where a default value, a right to be given for a fee, and a level to which no right is given are set in advance. This setting value is described in a state that cannot be modified in the electronic book file, for example, embedded in the middle of the electronic book data, a method of providing a parity check including the whole text, etc. According to the value, the available level is presented to the purchaser and necessary processing such as permission and remittance is performed.

FIG. 14 is an explanatory diagram showing the concept of a family card in the electronic book system according to the present invention. The electronic publishing according to the present invention provides a method of renting out to another person like a paper book, although the purchaser owns the key and cannot read the book without the purchaser's own IC card. Need to be kept. However, it is essential to prohibit lending (copying) to an unspecified majority. In the present invention, a method of passing a viewing key to a partner (eg, a family member) designated by a purchaser so as not to be intercepted by another person is shown. Mr. A
In order to purchase the electronic book, the public key 140110 of Mr. A is sent from the own IC card 140100 to the electronic bookstore 140,000. The electronic bookstore 140000 encrypts the browsing key with Mr. A's public key 140110 and returns it to Mr. A (140010). Thus, Mr. A obtains the browsing key of the electronic book, and shows a method of handing it to Mr. B, a family member. Mr. B has his own public key 1402
10 is handed to Mr. A's IC card, and Mr. A
Once the encrypted browsing key in the card 140100 is decrypted with its own private key, it is encrypted using Mr. B's public key 140210. Then, the browsing key encrypted with the public key of Mr. B is returned to the IC card of Mr. B (14012).
0). According to this method, even if the communication between Mr. A's card and Mr. B's card is intercepted, the intercepted person cannot decrypt the browsing key and can surely pass the browsing key to Mr. B. .

At this time, Mr. A's card application may erase the browsing key in Mr. A's IC card at the stage of sending the browsing key to Mr. B (complete transfer of rights to Mr. B). At the point when Mr. B receives the key, Mr. B's card application sends a message to the e-bookstore,
By receiving the key as a family, payment may be made at a lower price for a normal new purchase. The action information for the movement and copying of the browsing key is described in a form that cannot be modified in the browsing key file itself, such as a form embedded in the browsing key information, a parity check including the whole text, and the like.

FIG. 15 shows a method of recording the movement of the viewing key in the electronic book system according to the present invention. The browsing key 150,000 purchased by Mr. A is immutable when Mr. A transfers or copies it to another person, such as a form in which Mr. A's ID 150010 is embedded in the browsing key information, Is added by a method such as providing a parity check including Next, when transferred or copied from Mr. B to another person, a method of immutable ID150020 of Mr. B, such as embedding it in the browsing key information, and providing a parity check including the whole text, etc. Is added.
Then, when transferred or copied from Mr. C to another person, a method of immutable ID150030 of Mr. C, for example, embedding it in the browsing key information, and providing a parity check including the whole text, etc. Is added. In the case where the browsing key is illegally obtained or the decrypted key in some form is circulated in the hundred millions with the history of the browsing key moving in this way, even if By examining the history, it becomes possible to track down those who have committed illegal activities.

FIG. 16 shows a first embodiment of a method for recording the family relationship of a purchaser on an IC card in the electronic book system according to the present invention. The structure of IC card 160000 is
Since the structure of the electronic book-related information is described in FIG. 4, the description is omitted here. In this embodiment, the DF
One feature is that EF4 below one electronic book has family information 16010. In the case where the browse key purchased in FIG. 14 is a key of a book that can be distributed only to the family, the purchaser corresponding to Mr. A in FIG. It is checked whether the keys correspond to each other, and only when the keys correspond, the browsing key is copied to another card by the procedure shown in FIG.

FIG. 17 shows a second embodiment of the electronic book system according to the present invention, which shows a method of recording the family relationship of a purchaser on an IC card. Since the structure of the IC card 170000 and the method of using the family ID 170010 are the same as those described with reference to FIG. 16, the description is omitted here.
It is characterized in that D is not information dedicated to the electronic book application, but a family ID generally available to the owner of the card. That is, if there are applications other than the electronic book used in this card that require family information, a list of family IDs is provided in a place where these applications can be used in common. Although not shown, the family ID may be accompanied by contact information such as a mobile phone, a pager, an e-mail address, etc., and used in an emergency.

FIG. 18 is an embodiment showing a method of recording an ID of an acquaintance related to a purchaser, including a relation level value, in the electronic book system according to the present invention. IC card
The structure of 180,000 is obtained by replacing the family ID shown in FIG.
, And the other parts are exactly the same. In this embodiment, priorities are assigned to the IDs of acquaintances, and the IDs are used to transfer and grant rights from the IC card owner to each individual. Specifically, the person with the highest priority is a family, and the browsing key according to the present invention can be copied. The priority order is not limited to a single order. For example, an order having a plurality of elements such as permission for age and driver restrictions on a car license and a right to view a medical chart when a medical chart information of a hospital is described on an IC card. Can be recorded. In this case, wildcard-like information such as "doctor" and "pharmacist" is described instead of the personal ID of the partner. Specifically, for example, ID4 may be used as an ID indicating “doctor” and “pharmacist” instead of an individual ID. In addition, although not shown, the expiration date may be described in the priority order.
For example, it is described in such a form as to be embedded in the browsing key information or a method of providing a parity check including the whole text.

FIG. 19 is an explanatory diagram showing a first method of calling an electronic book from a paper book in the electronic book system according to the present invention. On the cover of the book 190100, information 190110 indicating the address of the electronic book by printing is described. By tracing this with a pen 190200 equipped with a camera 190210, the address information 190110 is read and converted to a character string by OCR. If an electronic book having the same content as the book has already been purchased, the electronic book viewer 190300 displays the electronic book in a viewable state. If the electronic book has not been purchased, a menu screen for purchasing the electronic book is displayed. The address information may be a bar code shown in FIG. 11 in addition to the character string shown, or may be supplied by attaching an equivalent IC chip built into an IC card to a book.

FIG. 20 is an explanatory diagram showing a second method of calling an electronic book from a paper book in the electronic book system according to the present invention. In FIG. 20A, on each page or each section of the book 200100, addresses 200110 and 200120 indicating the page and section are printed.
This address is read by tracing with a pen built in the camera shown in 9 and converted into a character string by OCR. For example, when the user traces the address 200110, as shown in FIG. 20B, an electronic book page having the same content as the book page is displayed, but a moving image or a book photograph that cannot be displayed in the book is displayed. Like looking at what you see from another angle,
A function to select a plurality of images can be provided. When the user traces the address 200120, a page having the same content as this page is displayed.
With reference to the displayed characters, the purchaser can easily perform an operation such as pasting it on another sentence written by the purchaser, as shown in the above procedure. In this case, when a reference to be referred to in the document being written is found in a paper book, the corresponding electronic information can be quickly obtained.

FIG. 21 is an explanatory diagram showing the structure of electronic book information for handling an introduction fee for introducing an electronic book to another person in the electronic book system according to the present invention. When copying the encrypted electronic book from Mr. A's electronic bookcase to Mr. B's electronic bookcase, the ID of Mr. A is added to the encrypted electronic book (210010). In addition, B to C, C to D
The same is true for copying to the same person, and each ID is added in an unmodifiable form, specifically by mixing it in the book information. Here, for example, when Mr. B who received the electronic book 210010 takes a purchase procedure to purchase the browsing key, the ID of Mr. A is
The electronic bookcase has a function of sending the book to the electronic bookstore, and the electronic bookstore recognizes that Mr. A has introduced the book to Mr. B, and pays the amount corresponding to the referral fee by electronic money or online payment. And so on.

[0031]

According to the present invention as described above, illegal browsing of an electronic book can be completely prevented, and its copyright can be reliably protected. Also, to manage electronic books on a dedicated bookshelf program. There is no need to manage them in the same row as other word processors or spreadsheet files, and electronic books can be used with the same feeling of use as a bookshelf that normally uses paper books. In addition, since e-books can be purchased in chapter units, only the necessary articles can be purchased and stored in the form of an electronic scrapbook, which has the effect of reducing purchase costs for users. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of an electronic book system according to the present invention.

FIG. 2 is an explanatory diagram showing a mode of movement of electronic book information and a viewing key in the electronic book system according to the present invention.

FIG. 3 is a chart showing a procedure for purchasing and browsing an electronic book system according to the present invention.

FIG. 4 is an IC used in the electronic book system according to the present invention.
It is the 1st example which shows the structure of a card.

FIG. 5 is an IC used in the electronic book system according to the present invention.
It is the 2nd example which shows the structure of a card.

FIG. 6 is a first embodiment of the electronic book system according to the present invention, showing a menu screen for purchasing an electronic book by chapter;

FIG. 7 is an explanatory diagram showing a first example of a method of displaying before and after book purchase in the electronic book system according to the present invention.

FIG. 8 is an explanatory diagram showing a second example of a method of displaying before and after purchase of a book in the electronic book system according to the present invention.

FIG. 9 is an explanatory diagram showing a third example of a method of displaying before and after book purchase in the electronic book system according to the present invention.

FIG. 10 is an embodiment showing a menu screen for purchasing an electronic book by chapter in the electronic book system according to the present invention.

FIG. 11 is an explanatory diagram showing a method of providing a menu screen for purchasing an electronic book in chapter units in the electronic book system according to the present invention.

FIG. 12 is an explanatory diagram showing a method of purchasing a right to refer to a document being viewed in the electronic book system according to the present invention.

FIG. 13 is a table showing a level classification of a right to refer to a document being browsed by the electronic book system according to the present invention.

FIG. 14 is an explanatory diagram showing the concept of a family card in the electronic book system according to the present invention.

FIG. 15 shows a method of recording a movement of a browse key in the electronic book system according to the present invention.

FIG. 16 is a first embodiment showing a method of recording a family relationship of a purchaser on an IC card in the electronic book system according to the present invention.

FIG. 17 is a second embodiment showing a method of recording the family relationship of a purchaser on an IC card in the electronic book system according to the present invention.

FIG. 18 is an embodiment showing a method of recording the ID of a person related to a purchaser including a relation level value in the electronic book system according to the present invention.

FIG. 19 is an explanatory diagram showing a first method of calling an electronic book from a paper book in the electronic book system according to the present invention.

FIG. 20 is an explanatory diagram showing a second method of calling an electronic book from a paper book in the electronic book system according to the present invention.

FIG. 21 is an explanatory diagram showing a configuration of electronic book information for handling an introduction fee when introducing an electronic book to another person in the electronic book system according to the present invention.

[Explanation of symbols]

 10000 Virtual bookshelf 10002 Bookshelf 10010, 20080 Electronic book viewer 10020 Electronic bookstore 10021, 20000, 20000, 20000 Reading key 10022 Book information encrypted by broadcast format 10030, 200060 IC card 10031 Public key 20010, 20020 Books

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) G09C 1/00 660 G09C 1/00 660E (72) Inventor Naoki Yamamoto 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi, Ltd. Inside the Multimedia System Development Headquarters of the Works (72) Inventor Maki Furui 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Multimedia System Development Headquarters of Hitachi, Ltd. (292) Inventor Toru Numata 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Incorporated Hitachi Systems Multimedia System Development Headquarters (72) Inventor Katsumi Ikuta Tokyo 4B-6 Kanda Surugadai, Chiyoda-ku, Tokyo F-term in the Information Media Business Division of Hitachi, Ltd. 5B049 AA05 BB26 CC05 CC10 DD01 EE23 FF01 FF07 GG03 GG10 5B058 KA3 2 KA35 KA40 YA00 5B085 AE02 AE09 AE12 AE29 5B089 GA01 GA23 GB03 HA01 JA08 JA40 JB22 KA13 KA17 KH30

Claims (42)

[Claims] An electronic book system for purchasing and handling a book composed of a text document, a diagram, and an image as electronic information instead of paper, comprising a computer for selling digitized electronic books, a communication function, and the like. In the electronic bookstore, the electronic bookstore purchases the encrypted electronic book and the browse key by encrypting the digitized electronic book with the browse key used exclusively for the book. An electronic bookstore having a communication function for sending to a person. 2. An electronic book system for purchasing and handling a book composed of a text document, a diagram, and an image as electronic information instead of paper, and a function of purchasing an electronic book from an electronic bookstore. In an electronic bookshelf comprising an electronic bookshelf configured by a computer and a communication function for performing the purchase procedure, management, and browsing, an electronic book encrypted by a browsing key used exclusively for the book by an electronic bookstore and A communication function of receiving a browse key used exclusively for the book; purchase processing means for performing a procedure of purchasing the browse key; and a function of decrypting the encrypted electronic book with the browse key. Electronic bookcase featuring. 3. An electronic bookstore according to claim 1, wherein said electronic bookstore distributes the encrypted electronic book using a communication medium of a one-way broadcast format such as digital broadcasting. Bookstore. 4. The electronic bookcase according to claim 2, wherein said electronic bookstore distributes the encrypted electronic book by using a one-way broadcast communication medium such as digital broadcasting. The function monitors a broadcast encrypted e-book that is being received and, when detecting that a purchase procedure has been performed, has a function of downloading and storing the corresponding encrypted e-book. Electronic bookcase. 5. An electronic bookstore according to claim 1, wherein the encrypted electronic book is distributed using a communication medium of a two-way communication format such as the Internet. 6. The electronic bookshelf according to claim 2, wherein said electronic bookshelf has a function of downloading and storing a transferred encrypted electronic book. 7. The electronic book shelf according to claim 2, wherein the purchaser sends the purchaser's public key from the electronic book to the electronic bookstore using a communication function, and uses the public key received by the electronic bookstore. Receiving the browse key transmitted after encryption, decrypting the encrypted browse key using the purchaser's private key, and decrypting the encrypted electronic book using the browse key. An electronic bookcase having a function. 8. The electronic bookcase according to claim 4, wherein:
The browsing key of the e-book encrypted by the purchaser's public key is sent in a broadcast format together with the encrypted e-book, and the electronic bookshelf receives the broadcast encryption received by the communication function. Monitors the purchased e-book and, when it detects that the purchase procedure has been performed, has the function of downloading and storing the pertinent encrypted e-book and the perusal key encrypted with the purchaser's public key. Electronic bookcase characterized by the above-mentioned. 9. An electronic bookcase according to claim 2, wherein said electronic bookcase has an IC card slot, and said browsing key is stored in the IC card. Bookcase. 10. The electronic bookcase according to claim 7, wherein the public key of the purchaser and the private key for decrypting the browsing key encrypted with the public key exist only in the IC card of the purchaser. An electronic bookcase, wherein the decryption of the encrypted browsing key is processed in an IC card. 11. An electronic book shelf according to claim 2, wherein the electronic book shelf of the purchaser has an electronic book viewer that is the same as, integrated with, or separate from the electronic book shelf, and is an encrypted electronic book. Is an electronic bookshelf that is decrypted and browsed using only a browsing function in the electronic book viewer using a browsing key. 12. The electronic bookcase according to claim 7, wherein the electronic bookcase of the purchaser has an electronic book viewer which is the same as or integrated with or separate from the electronic bookcase, and the public key and secret of the purchaser. The electronic bookcase, wherein the key exists only inside the electronic book viewer. 13. The electronic bookcase according to claim 9, wherein the electronic bookcase of the purchaser has an electronic book viewer that is the same as, integral with, or separate from the electronic bookcase, and the electronic book viewer is an IC card slot. Only when the IC card is inserted into the e-book viewer, the IC card sends the encrypted e-book viewing key to the e-book viewer, decrypts the e-book using the browsing key, and allows browsing. An electronic bookcase and an electronic book having a function of: 14. An electronic book shelf according to claim 13, wherein the electronic book viewer which is the same as or integrated with or separate from the electronic book shelf sends a public key unique to the electronic book viewer to the inserted IC card, Using the public key, the IC card encrypts the browsing key and sends it to the e-book viewer, and the e-book viewer receiving the encrypted browsing key,
An electronic bookcase having a function of decrypting a browsing key using its own secret key. 15. The electronic book shelf according to claim 12, wherein the browsing key in the electronic book viewer which is the same as or integrated with or separate from the electronic book shelf is not readable from outside the electronic book viewer. And an electronic bookcase having a security function for handling a viewing key. 16. The electronic book shelf according to claim 15, wherein the browsing key in the electronic book viewer which is the same as or integral with or separate from the electronic book shelf exists only as an internal variable of the browsing software running on the electronic book viewer. Electronic bookcase characterized by the above-mentioned. 17. An electronic book shelf according to claim 15, wherein an electronic book viewer that is the same as, integrated with, or separate from the electronic book shelf attempts to open the cover of the electronic book viewer or read the contents of the internal memory. When trying to do
An electronic bookshelf having a tamper-resistant function of clearing all memories in an electronic book viewer. 18. An electronic bookstore according to claim 1, wherein the electronic book to be purchased is sold in accordance with the table of contents of the book or the image of the page, and can be sold in whole sentences or in units of chapters. An electronic bookstore characterized by having. 19. The electronic book shelf according to claim 2, wherein the purchase of the electronic book to be purchased is performed in accordance with the table of contents of the book or the page image image, by a purchase procedure which can be purchased in a whole sentence or in parts such as chapters. An electronic bookcase, comprising: 20. An electronic bookstore according to claim 18, wherein a table of contents or a page image of the electronic book is displayed at the time of the purchase procedure using the electronic bookcase of the purchaser, and the purchase procedure is provided to the purchaser. Electronic bookstore characterized by having. 21. The electronic bookcase according to claim 19, wherein the table of contents or the page image of the electronic book is displayed and the operating procedure is selectable when a purchaser makes a purchase procedure using the electronic bookcase. And electronic bookcase. 22. An electronic bookcase according to claim 21, wherein said electronic bookcase has an IC card slot, and a table of contents or a page image of the electronic book displayed on the electronic bookcase is described on an IC card of a purchaser. Electronic bookcase characterized by the above-mentioned. 23. In the electronic bookshelf according to claims 21 and 22, the table of contents or page image of the electronic book displayed on the electronic bookshelf is published on an Internet homepage or the like, and its address is the IC card of the purchaser. An electronic bookcase characterized in that the electronic bookcase is described. 24. The electronic bookcase according to claim 21, wherein the table of contents or page image of the electronic book displayed on the electronic bookcase is published on a homepage or the like on the Internet, and its address is on the same paper as the electronic book. An electronic bookcase which is described in a book or a catalog of a book by a description method such as a character string or a barcode indicating an address, and has a reading means for reading the description method. 25. The electronic bookcase according to claim 2, wherein the electronic book displayed on the electronic bookcase of the purchaser is before purchase, after purchase of the viewing key, and after arrival of the electronic book body. An electronic bookcase characterized in that it is displayed in a visually different form. 26. The electronic bookcase and electronic book system according to claim 19, wherein the number of chapters of the purchased electronic book or the distinction between all chapters / partial purchase is displayed in a visually different form. Electronic bookcase featuring. 27. An electronic bookcase according to claim 10, wherein the electronic bookcase of the purchaser has an electronic book viewer which is the same as, is integrated with, or separate from the electronic bookcase, and said electronic book viewer has an IC card slot. Then, the electronic book viewer sends the public key of the inserted first IC card to the second IC card, and the second IC card encrypts the browsing key using the public key and sends it to the first IC card. An electronic bookshelf for transmitting and copying or copying an encrypted browsing key from a second IC card to a first IC card. 28. The electronic book shelf according to claim 27, wherein the second IC card transmits the browsing key from inside the second IC card when the transmission of the browsing key to the first IC card is completed. An electronic bookshelf characterized by being deleted. 29. An IC card for handling information encrypted to prevent copying of an electronic book or the like, wherein the second IC card receives a public key of the first IC card and uses the received public key. And encrypts the information and sends it to the first IC card. The encrypted information is transmitted from the second IC card to the first IC card.
IC for moving or copying to C card
card. 30. The IC card according to claim 29, wherein:
The second IC card deletes the information from the inside of the second IC card when the transmission of the encrypted information to the first IC card is completed. 31. The IC card according to claim 29, wherein
The IC card according to claim 2, wherein the second IC card recognizes the affiliation of the first IC card and sends information only to a card that has received a specific permission. 32. The electronic bookcase according to claim 11, wherein the management software of the electronic viewer converts character strings and images displayed by a program operating under the management software into character units, image units, and the like. If you have a means to copy
The browsing procedure in browsing the electronic book performs an operation such as issuing an instruction to prohibit a copy operation to the management software, or the browsing procedure does not have the function of copying, so that the electronic information of the displayed book is An electronic bookshelf and electronic book system having a function of prohibiting copying in character units and image units. 33. An electronic book shelf according to claim 11, wherein when browsing an electronic book by an electronic viewer, copying of the electronic book information is not allowed inside the electronic book information, and a character string or an image is stored in a character unit or an image unit. Copy right information such as the setting of the copyable range when the electronic book information can be partially copied and the amount of the copy right to be purchased for each copyable range when the copy is possible is attached. According to the copy right information, An electronic bookshelf having a copy range control means for controlling operation such as non-copying, partial or copying of a book. 34. In the electronic bookcase according to claim 27, when the second IC card sends the browsing key to the first IC card, the second ID number cannot be altered or deleted in the browsing key. An electronic bookcase that is attached and sent in a simple form. 35. The IC card according to claim 30, wherein
An IC card characterized in that when the second IC card sends information to the first IC card, the information is sent with the second ID number attached to the information in a form that cannot be altered or deleted. 36. The electronic book shelf according to claim 2, wherein an address indicating the purchased electronic book is displayed on a cover of a book supplied by paper having the same contents as the electronic book, The electronic bookshelf reads the address by a reading unit, and activates a procedure for browsing the electronic book when the electronic book has already been purchased. 37. The electronic book shelf according to claim 2, wherein an address indicating the electronic book is displayed on a cover of a book supplied with paper having the same contents as the electronic book,
The electronic bookshelf reads the address by a reading unit, and activates a procedure for purchasing the electronic book when the electronic book has not been purchased. 38. The electronic bookcase and electronic book system according to claim 2, wherein all or some pages of a book supplied by paper having the same content as the electronic book include:
An address of a page indicating the same or related content of the electronic book is displayed, and the electronic bookshelf reads the address by a reading unit and activates a procedure for browsing a designated page of the electronic book. And electronic bookcase. 39. In the electronic bookstore according to claim 1, when the encrypted electronic book is copied from the first purchaser to the second purchaser, the first electronic book is added to the encrypted electronic book. When the second purchaser takes the purchase procedure of purchasing the encrypted electronic book viewing key, the ID of the first purchaser is sent to the electronic bookstore. The electronic bookstore has a function of paying a first purchaser an amount corresponding to an introduction fee to a second purchaser. 40. The electronic book shelf according to claim 2, wherein when the encrypted electronic book is copied from the first purchaser to the second purchaser, the first electronic book is added to the encrypted electronic book. The second purchaser sends the ID of the first purchaser to the electronic bookstore when the second purchaser takes the purchase procedure of purchasing the encrypted viewing key of the electronic book. An electronic bookcase characterized by having a function of performing. 41. An electronic bookcase, an electronic book system, and an IC card for handling electronic information encrypted with a specific browsing key, wherein a purchaser who purchases the electronic information transmits to an electronic bookstore that sells the electronic information. The electronic bookstore encrypts the browsing key with the sent public key and sends it to the purchaser, and the electronic bookcase owned by the purchaser converts the received browsing key into its own private key. In the IC card mounted on the electronic bookshelf to be decrypted, the private key for decrypting the public key and the browsing key encrypted with the public key exists only in the IC card of the purchaser, An IC card having a function of performing decryption of the browsing key in the IC card. 42. A book composed of a text document or a diagram or an image is handled as electronic information instead of paper.
It has an electronic bookshelf composed of a computer and a communication function for selling digitized e-books, and a function of purchasing e-books from e-bookstores, and performs the purchase procedure, management and browsing. In an electronic book system including an electronic book shelf configured by a computer, a communication function, and the like, an encryption function of encrypting a digitized electronic book with a browse key used exclusively for the book; An electronic bookstore having a communication function of sending the electronic book and the browsing key to a purchaser; and an electronic book and an electronic book encrypted by a browsing key used exclusively for the book by the electronic bookstore. Communication function for receiving a browse key, purchase processing means for performing a procedure for purchasing the browse key, and decrypting the encrypted electronic book with the browse key. Electronic book system characterized by being constituted by an electronic bookshelf with that function.