JPH08339628A - Optical recording medium, optical recording and reproducing system and optical recording and reproducing method - Google Patents

Abstract

PURPOSE: To obtain an optical recording medium, an optical recording and reproducing system and an optical recording and reproducing method capable of eliminating unreasonably copying an information file having a large capacity and a copyright via a communication channel. CONSTITUTION: When the person in charge of an electronic book agency uses a controller 12 to read and output information data of the content of the book desired by a user from a host controller 13, the data is processed in a specific format different from a standard format by the controller 12 and supplied to an optical recording medium driver 11. The driver 11 writes the data of the content of the book in the specific format different from the standard format on a copy normal impossible information file area 1 of an optical recording medium 10. A dedicated thawing program displayed on a display by decoding the specific format is previously recorded on the copy enabling information file area 2 of the medium 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording medium, an optical recording / reproducing system and an optical recording / reproducing method, and more particularly to a large-capacity rewritable or write-once type optical recording medium utilizing a magneto-optical effect or a phase change effect. And an optical recording / reproducing system and an optical recording / reproducing method using the optical recording medium.

[0002]

2. Description of the Related Art An optical recording medium such as an optical disk has a very excellent characteristic as a large-capacity storage medium like a fixed magnetic disk (hard disk: hereinafter abbreviated as HD). Since the optical recording medium is particularly portable, it is suitable as a distribution medium for large-capacity electronic books. As a distribution medium for this electronic book, a diameter of 8 cm, which is a read-only medium, has been used.
Compact Disc Read Only Memory (CD
A "electronic book" using a -ROM) and a "digital book" using a floppy disk (hereinafter abbreviated as FD) that is a recordable medium are known.

[0003]

DISCLOSURE OF THE INVENTION CD-RO
Since the "electronic book" using M has a larger capacity than the "digital book", it is suitable as an electronic book, but if each bookstore does not have all "electronic books" in stock, general users will It has a fatal flaw as a distribution method in which the desired "e-book" cannot be purchased.

On the other hand, "digital book" using FD
Is a method in which each book store can acquire the data of books required by general users through a communication line and record them in the FD, and is equivalent to having all books in stock. It is a very good distribution type recording medium. However, since the storage capacity of the FD is as small as 1 megabyte, the storage capacity is not sufficient to handle weekly magazines and photobooks that have photo information, comic books that have image information, and books that have illustrations and graphs. It was Further, the conventional electronic books cannot prevent illegal copying, and it is difficult to protect the copyright.

The present invention has been made in view of the above points,
An object of the present invention is to provide an optical recording medium, an optical recording / reproducing system and an optical recording / reproducing method for a large capacity electronic book provided via a communication line.

Another object of the present invention is to provide an optical recording medium, an optical recording / reproducing system and an optical recording / reproducing method, which can prevent an information file having a copyright from being unduly copied.

[0007]

In order to achieve the above object, according to the invention of claim 1, an optical recording medium is provided with a copyable information file area which is formatted in accordance with a standard rule, and an ordinary recording medium other than the standard rule. The file processing program is provided with a copy normally impossible information file area that cannot be read, and an encryption key that can be accessed only by a specific device is provided to the copy normally impossible information file area.

Here, in the above-mentioned copyable information file area, a dedicated decompression processing program for displaying the record information of the copying normally impossible information file area on the display is recorded, and the code for the dedicated decompression processing program is encrypted. The key may be recorded.

In order to achieve the above-mentioned object, the optical recording / reproducing system according to the present invention has a copyable information file area which is formatted according to the standard rules and a normal file processing which is not the standard rules. An optical recording medium provided with a copy-unusable information file area that cannot be read by a program, an optical recording medium drive device capable of recording and reproducing information data in at least the copyable information file area of the optical recording medium, and an optical recording A control device for controlling the operation of the medium drive device, a host control device for inputting desired information data to the control device in response to a request from the control device, and an optical recording medium provided in the control device or the optical recording medium drive device. Copying normally Unavailable Information file to be input via upper controller and controller after format processing of information file area , In which and a print processing unit for writing the copy normally unavailable information file area by the optical recording medium driving apparatus.

Further, in order to achieve the above object, the optical recording / reproducing system of the present invention as defined in claim 5 is a copyable information file area which is formatted in accordance with a standard rule and a normal file process other than the standard rule. An optical recording in which a copy unreadable information file area that cannot be read by a program is provided, a dedicated decompression processing program is recorded in the copyable information file area, and desired information data is recorded in the copy unreadable information file area. A medium, an optical recording medium driving device capable of reproducing a recorded signal of the optical recording medium, and an operation of the optical recording medium driving device to reproduce the dedicated decompression processing program from the copyable information file area of the optical recording medium. Information stored in the main memory of the main memory, and the information data reproduced from the information file area that cannot be copied normally is decompressed in the main memory. A host controller to decompression processing in accordance with management program, in which a structure having a display for displaying said information data being decompressed by the higher-level controller sequentially.

Further, in the optical recording / reproducing system according to a sixth aspect of the present invention, the optical recording / reproducing system has a communication means for communicating with a host device connected via a communication line, and the electronic book data received by the communication means is transmitted as an optical data. The recording medium driving device has a recording control means for recording on an optical recording medium.

In this case, an electronic book received by the communication means is created in the copy prohibition information file area, which is not readable by a normal file processing program and is not stipulated in the optical recording medium. Data may be recorded.

Further, it is desirable to record the electronic book data received by the communication means on the optical recording medium by using the encryption key because the copy protection becomes more robust.

Further, in the copyable information file area provided on the optical recording medium, a dedicated decompression processing program for displaying the recorded electronic book data in the normally-uncopyable information file area on the display is optically recorded by the optical recording medium driving device. Recording on a medium is preferable because general users can display electronic book data on a display.

Further, the electronic book data received by the communication means is data-compressed by using the encryption key, and the data-compressed electronic book data and the encryption key are recorded on the optical recording medium by the optical recording medium driving device. This is desirable because the copy protection becomes more robust.

In order to achieve the above object, the optical recording / reproducing method according to claim 11 is a copy normal information file area that is formatted according to the standard rules and a copy normal that cannot be read by a normal file processing program that is not the standard rules. An exclusive decompression processing program is recorded in the copyable information file area of the optical recording medium provided with an unusable information file area, and desired information data is recorded in the copy normally impossible information file area. After reproducing the exclusive decompression processing program from the copyable information file area of the optical recording medium, the information data reproduced from the copy normally impossible information file area is sequentially displayed on the display while being decompressed using the reproduction exclusive decompression processing program. It was done like this.

Here, the desired information data recorded in the normally uncopyable information file area of the optical recording medium may be electronic book data received via a communication line.

Further, when the compressed data obtained by compressing the electronic book data received through the communication line using the encryption key and the encryption key are recorded in the copyable information file area, the copy of the optical recording medium is performed. The compressed data reproduced from the normally impossible information file area can be expanded to the original data by using the expansion software subroutine operating with the reproduced encryption key.

In order to achieve the above-mentioned object, the optical recording / reproducing method of the present invention according to claim 14 is a copyable information file area which is formatted according to the standard rules, and can be read by a normal file processing program instead of the standard rules. A dedicated decompression processing program and an encryption key are recorded in the copyable information file area of the optical recording medium provided with a non-copying normally impossible information file area, and desired information data is recorded in the copy normally impossible information file area. When reproducing the optical recording medium, the dedicated decompression processing program is reproduced from the copyable information file area of the optical recording medium and loaded into the main memory of the host controller, and then the loaded dedicated decompression processing program is started Read the bit pattern of the reproduced encryption key from the copyable information file area of the recording medium After 憶, in which so as to display the information data reproduced from the copy normally unavailable information file area of the optical recording medium successively in the display with reference to the encryption key stored.

Further, in the present invention, when the encryption key is a hardware encryption key formed by embossing the optical recording medium substrate, after writing a check bit pattern different from the encryption key in the location of the hardware encryption key. , The check bit pattern is read and stored in the main memory as an encryption key, and the information data reproduced from the normally unreadable information file area of the optical recording medium can be sequentially displayed on the display while referring to the stored encryption key. It is desirable because the copy protection of the information data in the information file area where copying is normally impossible becomes more robust.

[0021]

According to the inventions of claims 1 and 4, since the desired information data is recorded in the normally uncopyable information file area, for general users who can access only the information of the area formatted according to the standard rules, the copying is possible. It is possible to prevent access to desired information data in the normally impossible information file area.

In the inventions according to claims 2, 5, 9, and 11, a special decompression processing program for displaying desired information data of the copy normally impossible information file area on the display is recorded in the copy normally impossible information file area. Therefore, a general user can reproduce the dedicated decompression processing program, and by using the reproduction dedicated decompression processing program, desired information data in the normally uncopyable information file area can be displayed on the display.

According to the sixth aspect of the invention, the electronic book data is received from the host device connected through the communication line and is recorded on the optical recording medium by the optical recording medium driving device. , Even if you do not have all kinds of optical recording media with electronic book data recorded,
The electronic book data required each time can be obtained from an external host device and recorded in the optical recording medium.

According to the present invention as defined in claims 7, 12 and 16, information data such as electronic book data is received from a host device connected via a communication line, and this is received by an optical recording medium driving device. Copying of the recording medium Since it is recorded in the normally impossible information file, for general users,
It is possible to prevent access to the received information data recorded in the copy normally impossible information file area.

[0025]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a block diagram of a first embodiment of the present invention. As shown in the figure, the optical recording / reproducing system of this embodiment comprises an optical recording medium driving device 11 for recording information on the optical recording medium 10 and reproducing already recorded information, and an optical recording medium driving device 11. Control device 12 for controlling operation and control device 1
2 and a host controller 13 which issues a user command.

The optical recording medium 10 is a recordable optical recording medium such as a write-once type or a rewritable type, and has a diameter of about 9c.
In the magneto-optical disk of m, at least a copy normally impossible information file area 1 and a copyable information file area 2 are separately provided.

The format of the information area 1 for copying normally unusable is not a standard format such as the International Organization for Standardization (ISO), but is formatted so that it cannot be read by a normal file processing program. A computer or the like cannot copy the data in the normally uncopyable information file area 1.

On the other hand, the copyable information file area 2
Has been formatted according to a standard convention such as the International Organization for Standardization (ISO) convention, so that it can be accessed by a personal computer or the like owned by a general user.

The control device 12 is a device that imparts a function of processing information in a special format different from the standard format, and cannot be owned by a general user, and is a device exclusively used by an electronic book dealer. Further, the host controller 13 is a personal computer or workstation having an external storage device.

Next, the operation of this embodiment will be described.
In this embodiment, when a user purchases a book of a desired content at an electronic book dealer, he or she orders the title of the book from a person in charge of the electronic book dealer, and the person in charge uses the control device 12. Then, the upper control device 13 is caused to read and output the information data of the contents of the book desired by the user, and the control device 12 processes the information data in a special format different from the standard format to perform the optical recording medium drive device 1.
Feed to 1.

As a result, the optical recording medium driving device 11 writes the information data of the contents of the book desired by the user in a special format different from the standard format in the copy normally impossible information file area 1 of the optical recording medium 10. Then, the optical recording medium 10 in which this information data is written in the copy normally impossible information file area 1 is sold to the user.

Therefore, according to the present embodiment, by providing a database of the contents of various kinds of books that the user desires, on the side of the higher-level control device 13, necessary information data can be supplied to the control device each time. Since it suffices to use 12 to write in the normally unreadable information file area 1 of the optical recording medium 10, it is necessary to prepare a plurality of books with the same contents as in the conventional case at the electronic bookstore. The economy can be eliminated.

Further, according to the present embodiment, the optical recording medium 10
In order to write the information data into, it is possible to handle a weekly magazine or a photo book that has photographic information, which is not possible with the FD, or a comic book that has image information, or a book that has illustrations and graphs.

By the way, since the user who purchased the above-mentioned optical recording medium 10 does not have the control device 12, it is possible to use the host computer such as a personal computer in the copy normally impossible information file area 1 of the optical recording medium 10. Even if I try to reproduce the book information data recorded in the special format, it cannot be reproduced. Therefore, in one embodiment of the present invention, in order to solve this inconvenience, a special decompression program for decoding the special format and displaying it on the display is recorded in advance in the copyable information file area 2 of the optical recording medium 10.

FIG. 2 shows a block diagram of a second embodiment of the present invention when reproducing the optical recording medium 10. In the figure, the same components as those in FIG. 1 are designated by the same reference numerals. In FIG. 2, the host controller 23 such as a personal computer owned by the user has a main memory 24, and is connected to the display 26 and the optical recording medium driving device 11.

In this structure, the optical recording medium driving device 1
1, the dedicated decompression processing program stored in the copyable information file area 2 in the optical recording medium 10 is first reproduced, and the host controller 2 such as a personal computer
It is stored in the main storage unit 24 of No. 3 as indicated by 25.

Subsequently, the data of the electronic book stored in the copy normally impossible information file area 1 in the optical recording medium 10 is reproduced, and the reproduced data is stored in the main memory 24 and the dedicated decompression program is executed. It is decompressed by 25 (normally demodulated and reproduced) and displayed on the display 26. As a result, a user who has purchased the optical recording medium 10 can read the contents of the book on the display 26.

According to this method, a hard copy of the screen of the display 26 can be made, but a dead copy of the electronic book itself cannot be made, so that the copyright of the electronic book can be protected.

However, since this method uses the regular writing means, a method of analyzing the data storage form on the recording medium over time (for example, a method of reading while changing the read sector length) is used. Illegal copy tools cannot protect this and cannot protect copyright.

On the other hand, a software encryption key (for example, a password or a keyword) is stored in the optical recording medium 10.
Or it is desirable to set a hardware encryption key. A hardware encryption key is more robust against illegal copying and is therefore desirable. As a hardware encryption key setting method, the optical recording medium 10 is used.
It is desirable to set embossed shape on the substrate. As the content of the encryption key, it is desirable to have the copyright registered such as the name of the publisher of the electronic book because the copyright holder or the publisher right can be clarified.

In order to more firmly prevent illegal copying, it is sufficient to use a software encryption key or a hardware encryption key during the decompression process.
The role of the software encryption key or the hardware encryption key may be that of a password or that of a reference base for decompression calculation processing. As the hardware encryption key, it is desirable to use embossing or the like of the optical recording medium substrate that cannot be changed by the writing process on the optical recording medium or the erasing process.

Next, the configuration of the third embodiment of the present invention will be described with reference to the flowchart of FIG. This embodiment is an embodiment in which the execution of the dedicated decompression processing program is protected by an encryption key, and is an example of checking whether or not the information file of the electronic book is authentic when the dedicated decompression processing program is executed. The hardware configuration is the same as in FIG.

Since the first embodiment shown in FIG. 1 has the special control device 12, it is exclusively decompressed for accessing the record information of the copy normally impossible information file area 1 of the optical recording medium 10. It is not necessary to use the processing program. In addition, in the system owned by the general user shown in FIG.
If the dedicated decompression processing program is not used, the information on the electronic book or the like recorded in the copy prohibition information file area 1 cannot be read. In this embodiment, the execution of this dedicated decompression processing program is also protected by an encryption key.

In FIG. 3, first, the dedicated decompression processing program stored in the copyable information file area 2 of the optical recording medium is reproduced by the optical recording medium driving device, and the host controller such as a personal computer decompresses this reproduction-only decompression. The processing program is stored (loaded) in its main memory (step 31).

Subsequently, the execution of this dedicated decompression processing program is started (step 32), it is judged whether or not the hardware encryption key is formed by embossing the optical recording medium substrate (step 33), and it is not formed. In this case, the bit pattern of the software encryption key or the hardware encryption key recorded on the optical recording medium is read and stored (step 34).

Next, the host controller refers to this encryption key to reproduce the bit data of the electronic book or the like recorded in the copy normally impossible information file area 1 of the optical recording medium in a special dedicated format, It is sequentially displayed on the display (step 35). As the processing performed in this step 35, it may be determined whether or not the sign incorporated in the electronic book matches the encryption key, or it may be decompressed by using the encryption key as a base for bit operation. By providing a mechanism for performing processing, meaningful contents are displayed on the display only when the correct encryption key is used.

On the other hand, when the hardware encryption key is formed by embossing the optical recording medium substrate, the bit pattern for the check bit (bit pattern different from the encryption key) is written in this location (step 3
6) Then, the contents of this place are read and stored in the main memory of the personal computer (step 37). By using this check bit pattern as an encryption key, an illegally copied product cannot be displayed correctly.

FIG. 4 is a block diagram showing an example of using the encryption key. As shown in the figure, the upper control device 43 executes the decompression software subroutine 42 for the first time by inputting the encryption key 44, and the electronic recording medium drive device 41 reproduces the electronic information reproduced from the normally uncopyable information file area 1 of the optical recording medium. The compressed data of the expression book or the like is decompressed to restore the original uncompressed data and supplied to the display 45 for display. Thus, in this example, the encryption key 44 is used for the purpose of decompressing the compressed data of the electronic book or the like.

FIG. 5 shows a block diagram of the fourth embodiment of the present invention. In the figure, the same components as those in FIG. 1 are designated by the same reference numerals. This embodiment is an example showing an optical recording / reproducing system for a large-capacity electronic book or the like provided via a communication line.
In the above, the control device 12 is connected to the host control device 53 and the optical recording medium drive device 11, and the host control device 53 is further connected to the communication line 51 via the modem and the communication control device 52.

Next, the operation of this embodiment will be described.
In this embodiment, when a user purchases a book of a desired content at an electronic book dealer, he or she orders the title of the book from a person in charge of the electronic book dealer, and the person in charge uses the control device 12. Then, the host computer (not shown) is notified of the transmission of the information data of the ordered electronic book via the host controller 53 and the modem and the communication controller 52 and the communication line 51.

As a result, the information data of the electronic book notified by the host computer is supplied to the control device 12 via the communication line 51, the modem and communication control device 52, and the host control device 53 such as a personal computer or a workstation. The control device 12 processes this in a special format different from the standard format and supplies it to the optical recording medium driving device 11.

As a result, the optical recording medium driving device 11 writes the information data of the contents of the book desired by the user in a special format different from the standard format in the copy normally impossible information file area 1 of the optical recording medium 10.

At the time of this recording, it is desirable to record by using the software encryption key or the hardware encryption key or both, in order to prevent subsequent illegal copying. In addition, it is desirable that even the same literary work should be supported so that the user can see how many copies have been made. As a concrete means for this, for example, there is a method of inserting a cumulative issue number after the ISBN number.

Regarding the hardware encryption key,
It is desirable that the data representing the right holder of the publication of the work is contained in a part of the encryption key, and more desirably, it is formed in the form of emboss on the optical recording medium substrate. It is more desirable to record the software encryption key indicating the copy of the copy together with the hardware encryption key containing the data indicating the publisher. It is desirable to record these software encryption keys in the copyable information file area 2 formatted in the standard contract format.

Therefore, according to the present embodiment, even if the host controller 53 is not provided with a database of the contents of various kinds of books that the user desires, the electronic book data necessary for each time can be obtained as needed. It can be obtained from the host computer using the modem / communication control device 52 and the communication line 51, and is equivalent to having all books in stock, so that a very excellent distribution system can be realized, In addition, it is possible to eliminate the uneconomicalness of having to prepare a plurality of books with the same content at the electronic bookstore.

Further, according to the present embodiment, the optical recording medium 10
In order to write the electronic book data into the, it is possible to handle a weekly magazine or a photo book having photographic information, which is not possible with the FD, a comic book having image information, or a book having an illustration or a graph. The optical recording medium 10 according to this embodiment is used.
The reading of the electronic book data recorded in (1) by the user is performed in the same manner as in the second embodiment.

The present invention is not limited to the above embodiment, and instead of the control device 12 and the optical recording medium driving device 11, for example, the copy normally impossible information file area 1 of the optical recording medium 10 can be accessed. An optical recording medium driving device having a specific structure can also be used.

[0058]

As described above, according to the present invention,
By recording the desired information data in the copy normally impossible information file area so that the general user cannot access the desired information data in the copy normally impossible information file area, the illegal copy of the information data by the general user is prevented. It is possible to prevent and protect the copyright.

Further, according to the present invention, a dedicated decompression processing program for displaying desired information data of the copy normally impossible information file area on the display is recorded in the copy normally impossible information file area, so that a general user can perform this operation. Since the dedicated decompression processing program is played back so that the desired information data in the copy-unusable information file area can be displayed on the display, general users can display the desired information data in the copy-unusable information file area only through the display. However, it is possible to prevent dead copy of desired information data.

Furthermore, according to the present invention, the electronic book data from the host device connected through the communication line is received,
By recording this on an optical recording medium by an optical recording medium driving device, even if all kinds of optical recording mediums on which electronic book data are recorded are not available at retail stores (electronic book dealers), Since electronic book data required each time can be obtained from an external host device via a communication line and recorded on an optical recording medium, multiple books with the same contents should be prepared at an electronic book store. Not only can the uneconomical need to be eliminated be eliminated, but large-capacity electronic book data can also be recorded.

Further, according to the present invention, information data such as electronic book data is received from the host device connected via the communication line, and the optical recording medium driving device normally cannot copy the information data. By recording in the information file,
Since the general user cannot access the received information data recorded in the non-copyable information file area, it is necessary to prepare a plurality of books with the same contents at the electronic bookstore. It is possible to provide an optical recording medium that can eliminate the cost and can not copy the electronic book data of the user.

Further, according to the present invention, at the time of reproducing the optical recording medium, the bit pattern of the reproduced encryption key is read and stored from the copyable information file area of the optical recording medium, and then the optical key is read while referring to the stored encryption key. Copying of recording medium Since the information data reproduced from the normally unavailable information file area is displayed on the display one by one, it is possible to more firmly prevent copying of information data such as electronic book data by general users, and to protect copyright. Can be secured.

Further, according to the present invention, the required electronic book data can be recorded in the normally uncopyable information file area of the optical recording medium without using a communication line. It is possible to eliminate the uneconomicalness of having to prepare a plurality of books for electronic book stores, and reduce the load on the communication line.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of the third embodiment of the present invention.

FIG. 4 is a diagram illustrating an example of using an encryption key.

FIG. 5 is a configuration diagram of a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Copy Normal Unusable Information File Area 2 Copyable Information File Area 10 Optical Recording Medium 11, 41 Optical Recording Medium Driving Device 12 Control Device 13, 23, 43, 53 Upper Control Device 24 Main Storage 25 Stored Decompression Processing Program 26, 45 Display 42 Expansion Software Subroutine 44 Cryptographic Key 51 Communication Line 52 Modem and Communication Control Device

Claims (16)

[Claims] 1. A copy-prohibited information file area that is formatted according to the standard convention and a copy-prohibitable information file area that cannot be read by a normal file processing program that is not the standard convention are provided, and the copy-prohibitable information file is provided. An optical recording medium, characterized in that an encryption key that can be accessed only by a specific device is provided in the area. 2. The exclusive decompression processing program for displaying the record information of the copy normally impossible information file area on the display is recorded in the copyable information file area. Optical recording medium. 3. The optical recording medium according to claim 2, wherein there is an encryption key for the dedicated decompression processing program. 4. An optical recording medium provided with a copyable information file area which is formatted according to a standard rule and a copy normally impossible information file area which cannot be read by a normal file processing program that is not the standard rule, respectively. An optical recording medium driving device capable of recording / reproducing information data to / from at least the copyable information file area of an optical recording medium, a control device controlling operation of the optical recording medium driving device, and a request from the control device. According to the above, a host controller for inputting desired information data to the controller and the controller or the optical recording medium driving device are provided with the host controller by formatting the copy normally impossible information file area of the optical recording medium. The desired information data input via the device and the control device is recorded by the optical recording medium drive device. Optical recording and reproducing system, comprising a record processing means for writing the normal failure information file area. 5. A copyable information file area that is formatted according to standard rules and a copy-prohibited information file area that cannot be read by a normal file processing program that is not the standard rules are respectively provided, and in the copyable information file area. An optical recording medium in which a dedicated decompression processing program is recorded, and desired information data is recorded in the copy normally impossible information file area, and an optical recording medium drive device capable of reproducing a recorded signal of the optical recording medium. Controlling the operation of the optical recording medium driving device to reproduce the dedicated decompression processing program from the copyable information file area of the optical recording medium and store it in the main storage section, and reproduce from the copy normally impossible information file area. A higher-level controller for decompressing the information data to be decompressed according to the dedicated decompression processing program of the main storage unit Optical recording and reproducing system characterized by having a display for sequentially displaying the information data that is decompressed by the host controller. 6. Communication means for communicating with a host device connected via a communication line; an optical recording medium capable of recording a signal at least once; and information data recorded on the optical recording medium. , An optical recording medium driving device for reproducing, a control device for controlling the operation of the optical recording medium driving device, an electronic type for issuing a command to the control device and communication means, and receiving via the communication means An electronic book received by the host controller for transferring book data to the controller and the communication means provided in the controller or the optical recording medium driving device and input via the host controller and the controller. An optical recording / reproducing system, comprising: recording control means for recording data on the optical recording medium by the optical recording medium driving device. 7. The recording control means creates a copy normally impossible information file area in the optical recording medium that cannot be read by a normal file processing program without a standard convention, and the upper layer is stored in the copy normally impossible information file area. 7. The electronic book data received by the controller and the communication means input via the controller is recorded on the optical recording medium by the optical recording medium driving device.
The optical recording / reproducing system described. 8. The optical recording according to claim 6, wherein the recording control means records the electronic book data received by the communication means on the optical recording medium by using an encryption key. Playback system. 9. The recording control means, in a copyable information file area provided on the optical recording medium, a dedicated decompression processing program for displaying the recorded electronic book data of the copy normally impossible information file area on a display. 8. The optical recording / reproducing system according to claim 6, wherein the optical recording medium driving device records on the optical recording medium. 10. The recording control means compresses the electronic book data received by the communication means, which is input via the host controller and the controller, using an encryption key, and the data is compressed. 8. The optical recording / reproducing system according to claim 6, wherein the electronic book data and the encryption key are recorded on the optical recording medium by the optical recording medium driving device. 11. A copyable information file of an optical recording medium provided with a copyable information file area that is formatted according to standard rules and a copy-unusable information file area that cannot be read by a normal file processing program that is not the standard rules. A dedicated decompression processing program is recorded in the information file area, desired information data is recorded in the copy normally impossible information file area, and when reproducing the optical recording medium, the exclusive information is recorded from the copyable information file area of the optical recording medium. After reproducing the decompression processing program, the information data reproduced from the normally uncopyable information file area is sequentially displayed on the display while being decompressed by using the reproduction-only decompression processing program. . 12. The optical information recording medium according to claim 11, wherein the desired information data recorded in the normally uncopyable information file area of the optical recording medium is electronic book data received via a communication line. Recording and playback method. 13. Desired information data to be recorded in a normally uncopyable information file area of the optical recording medium is obtained by compressing electronic book data received through a communication line using an encryption key. The compressed data and the encryption key,
When reproducing the optical recording medium, decompress the compressed data reproduced from the normally uncopyable information file area of the optical recording medium into original data by using a decompression software subroutine that operates with the reproduced encryption key. The optical recording / reproducing method according to claim 11, wherein 14. A copyable information recording medium provided with a copyable information file area formatted according to standard rules and a copy-prohibited information file area that cannot be read by a normal file processing program that is not the standard rules. A dedicated decompression processing program and an encryption key are recorded in the information file area, and desired information data is recorded in the copy normally impossible information file area. When reproducing the optical recording medium, the copyable information file area of the optical recording medium is recorded. After the dedicated decompression processing program is reproduced from the above and loaded into the main storage unit of the host controller, execution of the loaded dedicated decompression processing program is started, and the encryption reproduced from the copyable information file area of the optical recording medium. After reading and storing the bit pattern of the key, refer to the stored encryption key. Optical recording and reproducing method and displaying sequentially on the display the information data reproduced from the copy normally unavailable information file area of the optical recording medium. 15. When the encryption key is a hardware encryption key formed by embossing of the optical recording medium substrate, after writing a check bit pattern different from the encryption key in the location of the hardware encryption key. , The check bit pattern is read and stored in the main storage unit as an encryption key, and the information data reproduced from the normally uncopyable information file area of the optical recording medium is sequentially displayed with reference to the stored encryption key. 15. The optical recording / reproducing method according to claim 14, wherein 16. The optical information recording medium according to claim 14, wherein the desired information data recorded in the normally-uncopyable information file area of the optical recording medium is electronic book data received via a communication line. Recording and playback method.