JPH07271800A - Portable electronic book - Google Patents

Abstract

PURPOSE:To obtain the portable electronic book which stores information on characters, images, etc., on a book medium, page by page, displays them on a display device, page by page, and also displays an explanation as auxiliary information in the display contents where the additional explanation is necessary. CONSTITUTION:When a cursor on a display screen is moved to a desired index position by operating cursor movement keys 4D and 4E and its position is determined with a cursor determination key 4F, an index display means selects the desired index. The 1st page of the item corresponding to the selected index is read out of the book medium 5 and the contents of the page are displayed on the display screens of display devices 2 and 3, so a user can reads the contents on the display screens. On the display screens, the index of the auxiliary information stored on the book medium 5 is displayed at a necessary place of the corresponding information, and the auxiliary information is read out by an auxiliary information selecting means when necessary.

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to books, newspapers, magazines, etc.
A replaceable record that stores information such as characters and images similar to
A portable electronic device that reads information from a storage medium and displays it.
For more details, please use with the same feeling as a paperback book.
About portable ebooks that can. As is well known, books, newspapers and magazines carry information.
Mark on paper with a combination of images such as letters, line drawings and photographs
It is printed and provided in a form that is easy to read and convenient to carry.
It When printed on paper, humans can see it with the naked eye.
It is very convenient because it can be done, and printing technology can be done in a short time.
Mass communication is possible because a large number of copies can be printed.
Books, newspapers and magazines play an important role in
ing. However, the use of paper involves the procurement, transportation and use of raw materials.
Huge amount of weight and volume at each stage of use and disposal
Transportation and storage costs are required. Also, recently
Paper is recycled as a resource, but still
As a result, huge forest resources are consumed to supply high-quality paper.
It is not preferable from the viewpoint of global environment protection. To solve these problems, use paper.
An electronic display device that works like a book, newspaper, or magazine without
An electronic book is a Japanese Laid-Open Patent Publication No. 4-39772.
Have been proposed. The e-book mentioned here is
A device that meets the conditions. (1) Text or graphics with the same display capability as existing books
Can be displayed. (2) The contents of a book with several hundred pages or more can be
Pact disk, floppy disk, magnetic card, device
Storage media such as digital audio tapes and laser cards
It is stored in the body and is read out and displayed. (3) Carry it as a portable device like a book
You can and read anywhere. (4) Specialty that the reader cannot understand or want to investigate in the text
Select terms such as terms, difficult idioms, and English words
The corresponding meaning content is stored in advance in the recording medium.
In addition, it has a function of reading and displaying this. If the electronic book has the above functions,
Store the contents of books, newspapers, magazines, etc. in a storage medium and
Distributing storage media in place of goods, newspapers, magazines, etc.
Therefore, it is possible to transmit functional information equivalent to or more than these.
In addition, the amount of paper used can be significantly reduced. [0006] However, the above-mentioned conventional
For e-books, we used paper such as books, newspapers, and magazines.
Since it is not possible to draw red lines and write memos like
I have to write it down on a paper such as a notebook every time
It was. Also, since the recording medium as described above is used
As described in JP-A-4-39772,
The dictionary is stored on multiple floppy disks and the IC card.
If necessary, reload these recording media into the electronic book.
User has to perform complicated operations.
There wasn't. The present invention solves the above-mentioned conventional problems.
It was made in the same way as a paperback magazine or magazine.
Portable e-books that can be used, specifically the above-mentioned
It is possible to use it as a set of storage media once without performing any unnecessary operations.
First, a simple portable electronic book that can be operated page by page
For the purpose of, it is possible to draw red lines, etc. as with conventional books.
The second purpose is a portable electronic book. [0008] The purpose of the present invention is as follows.
Achieved by Ming. That is, the present invention stores information
The book media consisting of
Information is read from the book medium and displayed on the display unit.
In a portable electronic book, the book medium
Is a storage medium that stores information so that it can be played back in page units.
It is a body and has a page control means to specify the page to be played.
It has a feature that it is displayed in page units.
Portable e-book is the first invention, and the same information is recorded.
Replaceable book media consisting of stored storage media
Information is read from the book medium and displayed on the display unit.
In the portable electronic book that is set to
A memo that remembers the specified portion of the information shown
A portable electronic book characterized by having means
It is an invention of No. 2. In the present invention described above, the book medium is
In addition to the above information, explanations of the terms of this information, supplementary information such as notes, etc.
The information is recorded with the index attached to the same page as the information.
The stored storage medium is used as the auxiliary storage medium for the information being displayed on the display means.
Providing auxiliary information selection means to select the information index,
Display auxiliary information corresponding to the selected index
By doing so, the problem of the conventional example described above is solved.
To do. Further, at least a part of the book medium is
Use a writable storage medium and write information to the storage medium.
A recording unit is provided to store control information such as pages at the end.
It is recorded in the storage medium, and the control information is first read when reproducing.
Then, by controlling the page, the paperback book etc.
Immediately from the number of pages at the end of the previous time as well as the bookmark when reading
It can be resumed. In the present invention described above, the memo means is being displayed.
Memo selection means to select the necessary part of the
Memo recording means for recording the selected part in the memo storage medium
By configuring with and, writing-out such as CD-ROM
It can also handle book media that do not come. It should be noted that the memo selection means is required for the information being displayed.
Anything can be selected as long as it can be selected and specified
You may use the operation keys of the general-purpose numeric keypad, cursor
You may also use the moving keys, etc., which are compact and easy to operate.
-The configuration is preferable. Also, by adding to the memo means, when rereading, up to the last time
Add the memo part selected by reading to the information as needed
On the storage medium for memos so that it can be displayed by a line
Add memo that adds the stored memo part to information and displays it
Display means, and memo playback that can display the memo part at once
Providing means is preferable from the viewpoint of use. Furthermore, a simple comment is written in the memo selection means.
By combining the comment entry methods that can be entered,
More advanced use becomes possible. In the present invention having the above-mentioned structure, the page unit
Book media with information such as characters and images divided into ranks,
Or, if necessary, in addition to the information, the explanation of the terms of this information
The index of auxiliary information such as clarity and notes is the same as that information
Store in page section and index the auxiliary information
Use a book medium stored in a proper place for each page. Such a book medium is used for the electronic book of the present invention.
When loaded in the network, the e-book will be stored in this book medium.
The retrieved information page by page or index by page
And output to the display. At this time, the page control means
If you specify the page to be read, the information on the electronic book will be played.
Means Specifically, the book medium driving device is activated,
The information of the specified page is read from the medium and the table is displayed.
It is displayed on the display means of the display section. Also, this page control hand
If you use the previous page instruction key and the next page instruction key
You can easily operate the pages before and after the page currently displayed.
Can be displayed. Therefore, the user should read the book.
You can read information such as sentences in the same way. Further, the auxiliary information selecting means can
Select the auxiliary information index displayed on the display
Then, the book medium driving device of the information reproducing means is activated, and
The auxiliary information corresponding to the index is read from the book medium.
Is displayed and displayed on the display means. Further, the user can display the display means by the memo means.
Select any desired information from the displayed information and store it.
Can be kept. Remember the memo contents like this
A semiconductor memory or the like is used as a storage medium for memos
Can be used. Further, a book is used as the storage medium for the memo.
A medium can also be used. This way memo collection
The memo content stored in the means is recorded in a predetermined area of the book medium.
Can be recorded and the memo content of the memo collection means is erased
Even if it happens, if you load the book medium again, the memo
The content can be read from the book media. Moreover, the said
A note about a book medium has been collected in the book medium
Therefore, it is very easy to manage and search the data. In particular, before the rereading by the memo addition display means
Display memo contents up to once along with information as side lines
Easy to do, conventional reading red lines, memo writing, etc.
You can also read while checking your past reading history.
You will be able to use it as if you were using a conventional book.
It Further, preset by the memo reproducing means.
One standard selected from multiple standards
I read the memo contents stored in my body and replaced them
After that, it is also possible to collectively display on the display means in this sorted order.
it can. A replaceable book medium used in the present invention
Information such as characters and images on a single recording medium.
Description of information terms, supplementary information such as notes, and input of supplementary information
All information such as dex can be recorded, exchanged, and
Writable in that it needs to have a memo function
There is no particular limitation as long as it is a large-capacity recording medium. Sanawa
Floppy disk, write-once optical recording medium, magneto-optical
Air recording medium, phase change optical recording medium, CD-R, CD-I, semiconductor memory
Known writable memory such as molly and flash memory
All recording media can be used. However, in terms of storability, portability, and distributability
Disk-shaped storage media are preferred, and have been commercialized in recent years.
Began to spread rapidly, media prices fell to affordable prices,
Optical recording with large storage capacity and confirmed reliability
An optical disk consisting of a medium is a library of the electronic book of the present invention.
A good record to use as a substitute for books and magazines
It is a medium. Compared to a hard disk
The user has read another book or magazine in that it can be exchanged.
If it becomes bad, buy an optical disk that remembers it.
And reload it. Further, it comprises a rewritable magneto-optical recording medium.
If you use a magneto-optical disk, read it once
Record your books and magazines when you no longer need them
If a drive for the
If you bring a ki disc, the previously recorded contents will be erased.
Leave and record new books and magazines that users want
You can get the service to do it. This service
The spread of paper, the amount of paper used can be further reduced.
It Furthermore, if a magneto-optical disk is used, record it.
Delete some or all of the memo contents as needed.
It is also possible to add a function that The details of the present invention will be described below based on examples.
explain. Embodiments of the present invention will now be described with reference to the drawings.
explain. FIG. 1 is a perspective view showing an electronic book in an open state.
2 and 3 are perspective views showing the electronic book in a closed state.
It FIG. 3 is a front view showing the opened / closed state. In the present embodiment, the book medium 5 has several thousands.
The contents such as books with more than pages can be stored in one disk.
When using a magneto-optical disk composed of a magneto-optical recording medium,
The index of information and its auxiliary information is divided into pages.
In addition to storing the auxiliary information corresponding to the index
I used what I remembered. Store in this book medium 5
The information is the same as for specialized books such as science and economics and specialized magazines.
Besides academic-related information, novels and the like are not particularly limited. So
Also, the language used may be Japanese or a foreign language. The structure of the main body of the embodiment will be described below. As shown in FIG. 1, the electronic book 1 of the embodiment
Has a two-page spread that opens and closes like a book.
The display devices 2 and 3 of the display unit are provided on both inner surfaces of the
However, similar to the conventional example, the display device has only one side and the other side
The surface may be an operation surface in which input keys are arranged. The table
The display devices 2 and 3 include a liquid crystal display or plasma.
A thin display such as a display or flat cathode ray tube
Is preferably applied. In this example, it is thin and consumes less power.
A liquid crystal display was used. In FIG. 1, 4A to 4L are predetermined.
Is an input key as an input means for instructing the operation of. Four
In A, the display contents of the display devices 2 and 3 advance to the next page.
Next page key, 4B
Page key to instruct to return to page
The initial page key to instruct the
The table of contents page is displayed in the on position and in the off position.
The page at the end of last time is displayed.
In this table of contents, the area where the memo contents are stored is shown.
It also includes a table of contents. 4D and 4E are displayed on the display devices 2 and 3.
Arbitrary contents from the information displayed by moving the cursor
Vertical and horizontal cursor movements used when selecting
Keys, each consisting of a pair of keys, a display device
Move a few cursors vertically and horizontally
It is something that can be made. 4F is this cursor movement key 4D, 4
A specific position of the display screen on the display device 2 or 3 by E
Cursor confirmation to confirm the cursor position set to
Is the key. 4G is displayed on each display screen of the display devices 2 and 3.
Make a note of any part selected from the contents shown
Of the storage medium for power supply provided in the memory 14 described later.
Recorded in a semiconductor memory that can hold memory even when
It is a memo collection key that instructs to do. 4H is a memo
The contents of memos stored in the storage medium for the main body such as a book medium
Instruct to transfer to an external storage medium for storage
It is a memo transfer key. 4I is stored in the storage medium
To display all the memo contents on the display devices 2 and 3
It is a memo batch display key. 4J puts the memo part side by side
A memo to instruct the information to be added and displayed by lines etc.
It is an additional display key. 4K is the index designated by the cursor
This is an auxiliary information selection key for displaying auxiliary information of the monitor. 4L is for ending or interrupting reading
This is the end key to operate. By the way, use the cursor movement keys 4D and 4E.
Instead, the user touches the display screens of the display devices 2 and 3 with their hands.
Then, you can input the touched position with this touch
Sensor, touch panel, and even a notebook personal computer.
Even if you use a trackball that is widely used for computer
Good. In addition, in this example, as described above, the structure is compact.
Assigned one function to each key for easy use
Although the input means based on the single function key is shown,
A combination of multiple keys similar to the calculator input method
Knowledge means can also be applied. Next, each function of the above-mentioned input keys 4A to 4L
5 is a block diagram of the hardware configuration for executing
It will be described with reference to FIG. Reference numeral 15 is a central processing unit CPU of this embodiment.
And various types of commercially available microphones such as 8-, 16-, or 32-bit
Although a processor chip can be applied, in this example, high-speed
A 32-bit chip was used for the sake of science. Clock generation by the operation of the crystal oscillator 18
A pulse is generated from the device 16, and this pulse causes the CPU 1
5 execution cycles are determined. In addition, key signals from various keys 4A to 4L are sent.
Via the I / O interface 17 and the bus 12.
Then, it is taken into the CPU 15. It consists of a readable and writable semiconductor memory and the like.
The memory 14 of the storage device stores information of the book medium 5,
Temporarily store information when making notes when playing back
It is a thing. ROM (Read Only Memory) 1
3 is a program for operating the electronic book 1 described later.
It is a read-only storage device that is stored and stored easily
Means for executing the functions of the input keys 4A to 4L described above
The program of is stored. And these are bus 1
Connected to 2. The display devices 2 and 3 are the well-known liquids in this embodiment.
As it is well known, it consists of a crystal display and is a commercially available dedicated collection.
Liquid crystal control IC 9 and driver 1 which are circuits
It is connected to the bus 12 via 0 and 11. Also liquid crystal
The control IC 9 includes the display screens of the display devices 2 and 3.
Image display memory 8 (2 screens) for updating is connected.
Has been continued. A display device consisting of a liquid crystal display
Place 2 and 3 on both sides like a spread book as shown in Figure 1.
Can be displayed, and if necessary, both sentences, or one sentence
Chapters, the other can display drawings, auxiliary information, etc. arbitrarily. Na
A in the figure is a connecting member for connecting in an openable and closable manner. In FIG. 6, the book medium 5 is detachably mountable.
Recording / playback of the loaded book medium 5
This is a book medium driving device as a raw means.
A commercially available magneto-optical disc corresponding to the magneto-optical disc of the body 5.
A drive was used. Do not use this magneto-optical disk drive
The book medium driving device 6 is composed of its own control circuit.
Connect to bus 12 via book media controller 7
And the recording / playback will be performed according to the command from the CPU 15.
Growling. Next, the basic operation of the electronic book 1 having the above configuration
The work will be described together with its operation. First, the user
A magneto-optical disk book that contains the desired content in advance
The medium 5 is inserted into the book medium driving device 6. Next, the power switch B is turned on, and the initial page
When you operate the key 4C to the on position, the electronic book 1
The operation to read the contents of the table of contents stored in the media 5 is performed.
U That is, the initial page key 4C is operated to the on position.
Then, this key signal is transmitted to the I / O interface 17 and
And CPU1 via bus 12 and CPU1
Reference numeral 5 activates the index display means stored in the ROM 13.
The table-of-contents display means activates the book medium driving device 6 and
Read the instructed table of contents page from the
Display the contents of the read table of contents on the display devices 2 and 3.
It The user requests from the displayed table of contents
Select a table of contents. The selection is made as follows. That is, the cursor movement keys 4D, 4E
Depending on the operation, move the cursor on the display screen to the position of the desired table of contents.
Move to the position and confirm with the cursor confirmation key 4F,
The desired table of contents is selected by the table of contents display means. table of contents
If there is a lot of content that cannot be displayed on the display screens 2 and 3,
Is required using the next page key 4A and the previous page key 4B
The same table of contents may be displayed and the same selection may be made. Do
And the first page of the item corresponding to the selected table of contents
It is read from the book medium 5 and the contents of that page are displayed.
Since it is displayed on the display screens of devices 2 and 3,
The user can then read the content. On the other hand, the initial page key 4C is operated to the off position.
When made, this key signal is transmitted to CPU15 in the same way
Then, the CPU 15 activates the continuous page display means. Succession
The continued page display means is similar to the table of contents display means and will be described later.
Recorded in the book medium 5 at the end of the previous time by the end processing means
Read the last number of pages from the book medium 5 and
Based on this, the page is read and displayed. After the content is displayed, the next page key 4A
When operated, the next two pages following the currently displayed page
The contents of the minute are read from the book medium 5 and displayed on the display device 2.
And the display content of the display device 3 is changed. Meanwhile, the previous page
When the key 4B is operated, the previous page of the page currently displayed is displayed.
Contents of two pages are read from the book medium 5 and displayed
The display contents of the device 2 and the display device 3 are changed. But
Operation of next page key 4A and previous page key 4B
The display medium of each of the display devices 2 and 3 is
The contents of 5 are displayed as if turning the pages of the book. By the way, the book medium 5 is displayed on the display screen.
The auxiliary information index that you have stored is required for the corresponding information.
It is displayed in the same place with the same subscripts as usual books, and when necessary
If the auxiliary information is selected, the auxiliary information is read out.
You can refer to it, and explain about it below.
Reveal. Of the information displayed on the display screens of the display devices 2 and 3.
Difficult technical terms, idioms, or supplementary explanations
Indexes such as subscripts are displayed at important points.
It If the user wants to refer to the index,
You can refer to it as below. That is, the need for reference is
In the case of twisting, first, the auxiliary information selection key 4K is operated. You
Then, as in the case of other key operations, the CPU 15
The auxiliary information selecting means corresponding to this key signal is activated.
The user can move the cursor with the cursor movement keys 4D,
4E to move the cursor to the corresponding index position,
The cursor confirmation key 4F is operated to confirm. Auxiliary information selection
The selection means is the auxiliary information corresponding to the index of the confirmed position.
Information from the book medium 5
Auxiliary to the display devices 2 and 3 on the side opposite to the displayed side
Display information. For example, if the term you want to refer to is a display device
Suppose that it is "Women's firewood" displayed in 3.
The result selected by the report selection means is assisted as shown in FIG.
The information content is displayed on the display device 2 on the opposite side. Yo
Therefore, you can refer to the supplementary information together with the text. End of reference
If completed, operate the auxiliary information selection key 4K again
Thus, the auxiliary information is erased and the normal state is restored. The above is mainly related to the first invention of the present invention.
I explained the part. Next, a memo according to the second invention of the present invention.
The means will be described. The memo means is an electronic book of the present invention.
I wrote it down in the contents while using 1.
When a new part occurs, use that part of the book medium 5 etc.
It is recorded and stored in a storage medium. In this embodiment, it is a memo.
The storage medium is the book medium 5. The configuration will be described below together with the operation. table
Of the information displayed on the display screens of the display devices 2 and 3,
It is assumed that a part that the user wants to write down occurs. First
The user operates the memo collection key 4G. Then CP
U15 is a memo corresponding to other key operations.
Start the means. The user continues to move the cursor key 4
Use D and 4E to move the cursor to the beginning position of the part you want to write down.
Then press the cursor confirmation key 4F to confirm that position, and
Move the cursor to the last position of the part you want to write down
And confirm. The memo means is the beginning of this confirmation operation.
The memo information consisting of the position, the tail position, and the information between these positions
Retains memory even when the power supply in the memory 14 is turned off
It is stored in the storage medium for memo storage that is made possible. user
In this way, you can read the necessary memos while sequentially storing them.
Proceed. Before the memo means is set in the memory 14 by the user
The memo information is sequentially stored. The user will collect this at the end
If you want to store the memo information in the book medium 5,
Operate the send key 4H. Then, the memo means is the memory 14
The memo information stored in the memo storage medium in the
It is transferred to the memo storage area of body 5 for storage and memo recording
Erase the storage contents of the storage medium. At this time, the book medium 5 is replaced
Therefore, use a memo medium consisting of the same magneto-optical disk.
For example, you can build a personal database of users. Sanawa
Then, in the past, a memo part with a red line etc. was converted into a database.
However, according to the present invention,
In this way, you can create a database without any input work.
Wear. Confirm the memo contents collected as described above
If desired, the memo batch display key 4I is operated. Do
Then, the memo display is activated in the same way as other input key operations.
Move and display memo contents in batch order on the display devices 2 and 3
It Next page key 4A when the memo content is 2 pages or more
You can see the whole contents by sending the page by
it can. In this example, the memo contents are displayed in the order of recording.
I showed what to display all, but the contents were searched by keyword.
Search and display only the necessary items sorted in order of content
Display content and display method can be modified and used according to the purpose.
Needless to say. The memo part is a table of information of the book medium 5.
If you want to add it to the display and display it with a side line, etc.
The memo addition display key 4J consisting of a switch is operated.
Then, as with other input key operations, memo addition display
When the means is activated and the lamp of the key 4J is turned on,
Add a line to the information in the book medium 5 for the part that you wrote down
To be displayed. Therefore, while checking the memo part,
You can read it, or browse around the memo part.
Wear. To cancel this display, press the memo addition display key 4L.
It is performed by re-operating. When reading is finished, operate the end key 4L.
To make. Then, just like any other input key operation, end
The processing means is activated to perform the following processing. That is, now
The number of pages being displayed is the number of end pages of the book medium 5
If there is a match, read it and read the memo.
If you have any notes, transfer them to a book medium and then
Initialize all control information and display "End" on the display device 2.
To show. If they do not match, it is regarded as an interruption and the
Code and table provided for identification on the recording medium 5
The number of pages shown can be stored in the same memory as the memo memory.
Stored in the memory, and displayed on the display device 2.
Display "interrupt". Check these displays to check the power
Switch B off. The details of the present invention are described above based on the embodiments.
However, the present invention is not limited to such embodiments.
The fact is clear from that point. As described above, in the present invention, the book medium is
Information such as characters and images is stored in pages on the body, and books can be
Switch page by page so that the pages are displayed on the display device.
And terms that are difficult for the user to understand in the displayed content.
Or if there is a part that requires additional explanation,
Store the description as auxiliary information in the same book medium and
Display words or parts as indexes, and if necessary
Since it can be displayed, it has the same feeling as reading a book in a library.
A portable e-book that can be used in Also books
In the electronic book according to the invention, all the information is a single book medium.
Because it is stored in the body, the user can
If you load the above into the electronic book of the present invention, the medium will be exchanged thereafter.
There is no need to replace it, and a portable electronic book that is simpler than conventional ones.
I was able to realize Also, in the displayed contents, the user notes
If the contents you want to keep occur, write the contents to the optical recording medium.
It is recorded in a storage medium such as
I was able to browse. This allows the conventional
The memo contents can be
In the acquisition as database data that can be searched by computer
Wear. As described above, the present invention is user friendly.
Portable electronic device that can also be used as a data collection device
It realizes the book.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an opened state of an embodiment. FIG. 2 is a perspective view showing a closed state of the embodiment. FIG. 3 is a front view showing an opened / closed state of the embodiment. FIG. 4 is a plan view illustrating auxiliary information selecting means according to the embodiment. FIG. 5 is a block diagram showing the overall configuration of the embodiment. [Explanation of reference numerals] 1 electronic book 2, 3 display device 4A next page instruction key 4B previous page instruction key 4C table of contents instruction key 4D vertical cursor movement key 4E horizontal cursor movement key 4F cursor confirmation key 4G memo acquisition key 4H Memo transfer key 4I Memo batch display key 4J Memo addition display key 4K Auxiliary information selection key 4L End key 5 Book medium 6 Book medium driving device A Connection member B Power switch

Claims (1)

Claims: 1. A portable electronic book in which a book medium, which is a storage medium in which information is stored, is replaceably mounted, and information is read from the book medium and displayed on a display unit. In the portable electronic device, the book medium is a storage medium that stores information so that it can be reproduced page by page, and is provided with page control means for designating a page to be reproduced, and is displayed page by page. book. 2. The book medium is a storage medium which stores, in addition to the information, auxiliary information such as explanation of terms of the information and notes, together with an index attached to the same page as the information, which is being displayed on the display unit. The auxiliary information selecting means for selecting an index of the auxiliary information of information is provided, and the auxiliary information corresponding to the selected index is displayed.
The portable ebook described. 3. The book medium comprises at least a writable storage medium, recording means for writing information in the storage medium is provided, and control information such as a page at the end is recorded in the storage medium and reproduced. The portable electronic book according to claim 1 or 2, wherein the control information is read out first to perform page control. 4. A memo unit for storing a designated portion of the information displayed on the display unit.
Or, the portable electronic book described in 3. 5. A portable electronic book in which a book medium, which is a storage medium in which information is stored, is replaceably mounted, and information is read from the book medium and displayed on the display unit. A portable electronic book characterized by comprising a memo means for storing a specified portion of the stored information. 6. The memo selecting means comprises: memo selecting means for selecting a necessary portion of the information being displayed; and memo collecting means for recording the selected portion in a memo storage medium. Portable ebook. 7. The book medium is a writable storage medium and also serves as the memo storage medium.
5. The portable electronic book described in 5 or 6. 8. The portable electronic book according to claim 1, wherein the book medium is a disk-shaped storage medium. 9. The portable electronic book according to claim 8, wherein the disk-shaped storage medium is an optical disk. 10. The body according to claim 1, wherein the main body is constructed so that it can be opened in the same manner as a book, and display parts are provided on both inner surfaces thereof.
9. The portable electronic book described in 9.