KR20060050127A - Method and apparatus of creating a backup disc, and storage medium for creating a backup disc program - Google Patents

Abstract

According to the present invention, when creating a backup of a hybrid recording medium, the recording side records the recording information recorded in the user area of the copy source recording medium based on the information recorded in the read only area of the copy source recording medium and the copy side recording medium. It is an object of the present invention to provide a backup disk creating apparatus and method that can reliably create a backup disk by recording in a user area of a recording medium.

It is another object of the present invention to provide an information recording medium, a recording method, an access method, an information recording apparatus, and a processing apparatus that can prevent unauthorized use of the recorded contents without causing an increase in cost.

The backup disk creating device 10 includes an optical disk device 20 as an information recording device and a host 80 as an information processing device for controlling the optical disk device 20. In addition, the connection line in FIG. 1 shows the typical signal or information flow, and does not show all the connection relationship of each block. The optical disk device 20 includes a spindle motor 22, an optical pickup device 23, a laser control circuit 24, an encoder 25, a motor driver for rotationally driving the optical disk 15 as an information recording medium. 27, reproduction signal processing circuit 28, servo controller 33, buffer RAM 34, buffer manager 37, interface 38, ROM 39, CPU 40, RAM 41, and the like. It is configured to include.

Information about the free space of the optical disc is recorded in the program area of the optical disc (step S527). Since the recording capacity of an optical disc is not necessarily the same even if it is the same type of optical disc, when the original optical disc is copied entirely to another information recording medium, the content recorded on the other information recording medium is the original optical disc. It is the same as the content recorded in, but the blank space does not necessarily match. Therefore, it is possible to determine whether or not it is original based on the information on the blank capacity, and as a result, it is possible to prevent the illegal use of the recorded content without incurring a cost increase.

Backup disc writing device, optical disc device, spindle motor, optical pickup device, laser control circuit

Description

BACKUP DISC DEVICE, AND A BACKUP DISC PROGRAM AND A RECORDING MEDIUM WHICH THE BACKUP DISK PROGRAM WILL BE WRITTEN, METHOD AND APPARATUS OF CREATING A BACKUP DISC.

1 is a schematic structural diagram of a backup disk creating apparatus according to an embodiment of the present invention;

2 is a configuration diagram of an optical pickup device.

3 is an explanatory diagram of a hybrid disk;

4 illustrates the physical format of an optical disc (eg CD).

Fig. 5 is a diagram showing an example of a management form of file and directory information using ISO9660 which is commonly used in a CD.

Fig. 6 is a diagram for explaining the contents of a program area in detail.

Fig. 7 is a flowchart for explaining a backup disc creating method according to the first embodiment of the present invention.

8 is a flowchart for explaining a backup disk creating method according to the second embodiment of the present invention;

Fig. 9 is a flowchart for explaining a method for creating a backup disc according to the third embodiment of the present invention.

10 is a block diagram showing a configuration of an optical disk device according to an embodiment of the present invention.

11 is a view for explaining an optical disk according to an embodiment of the present invention.

FIG. 12 is a diagram for explaining a RAM unit of FIG. 11; FIG.

Fig. 13 is a diagram for explaining an area in which a blank capacity file is recorded.

FIG. 14 is a flowchart for explaining a reproduction process in the optical disk device of FIG.

15 is a flowchart for explaining a recording process in the optical disk device of FIG.

Fig. 16 is a diagram for explaining an area in which an updated blank capacity file is recorded.

FIG. 17 is a flowchart for explaining another example of a reproduction process in the optical disk apparatus of FIG. 10; FIG.

18 is a flowchart for explaining another example of recording processing in the optical disk device of FIG.

<Explanation of symbols for the main parts of the drawings>

 Backup Disc Creation Device

15 optical disc

20 optical disk unit

22 spindle motor

23 Optical Pickup

24 laser control circuit

25 encoder

27 motor driver

28 reproduction signal processing circuit

33 servo controller

34 buffer RAM

37 Buffer Manager

38 interface

39 ROM

40 CPU

41 RAM

80 hosts

115 Optical Disc (Information Recording Medium)

120 Optical disk unit (information recording unit, processing unit)

123 Optical pickup apparatus (part of recording means, part of updating means)

124 laser control circuit (part of recording means, part of updating means)

125 encoder (part of recording unit, part of updating unit)

139 Flash Memory (Recording Media)

140 CPU (part of acquisition means, part of recording means, determination means, comparison means, control means, part of update means)

The present invention relates to a backup disc creation apparatus and a backup disc creation method, and more particularly, to an apparatus and a method for creating a backup of a hybrid recording medium, which are recorded in read-only areas of a copy source recording medium and a copy side recording medium. A backup disk creating apparatus and a backup disk creating method for recording recording information recorded in a user area of a copy source recording medium into a user area of a copy-side recording medium based on management information.

The present invention also relates to an information recording medium, a recording method, an access method, an information recording apparatus, a processing apparatus, and a recording medium on which a program is recorded, and more particularly, an information recording medium having a data area in which user data is recorded, and information. A recording method and an information recording apparatus for recording information on a recording medium, an access method for performing information recording or reproduction on an information recording medium, and a recording medium on which a program used in the information recording apparatus and the processing apparatus is recorded. .

In recent years, personal computers (hereinafter referred to as [PC]) have been widely used not only in businesses but also in homes due to their improved functions and lower prices. As an information recording medium having a large recording capacity, an optical disk such as a compact disc (CD) is attracting attention, and an optical disk device as an information recording apparatus using an inexpensive optical disk as a medium for information recording is one of the PC peripheral devices. It became widespread.

This allows the user to record information on a CD-R (CD-recordable), CD-RW (CD-rewritable) or the like using an optical disk device. It was very easy to write. However, since backup can be easily performed, illegal copying is also possible, so that information such as music, movies, photographs, and computer software (hereinafter collectively referred to as "content") is recorded on a CD-ROM or the like, so-called packaged media. It could do a lot of damage to the content makers on the market. Accordingly, various copy protection methods have been devised to prevent unauthorized copying or illegal use of contents.

For example, Japanese Patent Laid-Open No. 6-349064 discloses a so-called hybrid disk prevention method which includes a read-only area (ROM area) and a recordable area (RAM area). However, according to the illegal use prevention method disclosed in the above patent publication, since it is determined whether or not the contents are copied illegally based on the boundary between the ROM area and the RAM area, an information recording medium other than a hybrid disk is used. There was a problem that could not be applied. In addition, since the data is rewritten to detect the presence or absence of a boundary, there is a possibility that data recorded on the original disc may become unplayable depending on the type of disc.

Recently, in the CD field, a hybrid disk having a read-only area (hereinafter referred to as a ROM section) and a recordable or rewritable area (hereinafter referred to as a RAM section) as described above is replaced by a CD-ROM. It is proposed to distribute (sell) the contents in the ROM section in advance. In such hybrid disks, the first session is stamped as a ROM section in order to ensure compatibility with an existing disk, and the subsequent area is treated as a RAM section. In this manner, the system can be treated as a multisession recorded disk even in a system in which the hybrid disk cannot be recognized. Therefore, at least read compatibility can be ensured.

As a method for distinguishing the hybrid disk from other CD media (CD-ROM, CD-R, CD-RW, etc.), a method in which information indicating that the hybrid disk is stamped on the hybrid disk has been proposed. . In such a disc of a CD medium, the recorded data is digital data, and since deterioration due to duplication does not occur, a backup is often created to protect the original. In such a backup creation, a medium in which recording is completed is generally copied to an unrecorded medium.

As a backup technology of such a hybrid disk, for example, Japanese Patent Laid-Open No. 2004-070999 discloses a backup application of a hybrid disk. It is proposed here that the copying medium is a hybrid disk, or that a backup is created by verifying the information in the ROM area. For example, a program as disclosed in Japanese Patent Laid-Open No. 2002-260329 cannot use the backed up disk. There is a possibility.

On the other hand, Japanese Patent Laid-Open Publication No. 2004-241006 by the same applicant has proposed a method of performing a backup after confirming the correspondence between the backup information and the base information of the backup-side hybrid disk.

However, in the conventional backup method of a hybrid disk, since the copy-side disk is a CD-R or CD-RW disk and is not a hybrid disk, in the case of taking countermeasures using information specific to the hybrid disk, for example, It cannot be used as a backup.

In the case of using a hybrid disk for the copy-side disk, some of the recording media are copied to some recording media, but such a case is not considered in the conventional backup application.

Moreover, all the prior art disclosed in the said patent publication assumes that the same information is recorded in the ROM part, but the method was not disclosed clearly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and when a backup of a hybrid recording medium is made, the user area of the copy source recording medium is based on the information recorded in the read only area of the copy source recording medium and the copy side recording medium. It is a first object of the present invention to provide a backup disk creating apparatus and method which can reliably create a backup disk by recording the recording information recorded in the user's area of the duplication-side recording medium.

In addition, an information recording medium capable of preventing the illegal use of the recorded content without incurring a cost increase, and a recording method and the information recording apparatus for preventing the illegal use of the content recorded on the information recording medium; It is a second object of the present invention to provide a recording medium on which an access method, a processing apparatus, and a program capable of preventing unauthorized use of content are recorded.

In order to achieve the above first object, the present invention stamps a first session as a read-only area, and indicates that the disk is a hybrid recording medium in a recording medium recorded by multi-session with a subsequent area as a recordable user area. A backup disk creating apparatus of a hybrid recording medium stamped with information, for reading out management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium. Means, a recording medium determination means for determining whether or not the recording medium is a hybrid recording medium based on the disc information read by the reading means, the management information and the copying side of the copy source recording medium read by the reading means. Management information comparing means for comparing management information of the recording medium; And a control means for controlling the rejection means, and when the recording medium determining means determines that both the copy source recording medium and the copying side recording medium are hybrid recording media, the control means copies the corresponding means by the reading means. The management information recorded in the read-only area of the original recording medium and the record information recorded in the user area are read, and the management information recorded in the read-only area of the duplication-side recording medium is read out, and the management information is read. Comparing means compares the management information of the duplication source recording medium with the management information of the duplication-side recording medium, and if both management information matches as a result of the comparison, recording information recorded in the user area of the duplication source recording medium. A backup disk creating apparatus for controlling recording to a user area of the duplication-side recording medium. The ball.

The present invention determines whether or not backup is possible by comparing management information recorded in a read-only area of a recording medium recorded by a multi-session. That is, the management information of the copy source recording medium and the record information recorded in the user area are read out, and furthermore, the management information of the copy side recording medium is read out, and only when the management information of both recording mediums coincides, The recording information of the user area is recorded in the user area of the duplication-side recording medium.

Further, the present invention provides that the control means reads the sector of the management information portion of the file / folder recorded in the read-only area of the copy source recording medium and the copy side recording medium, and compares the sectors. And a backup disc creating apparatus for determining whether or not the same information is recorded in the read-only area of the copy-side recording medium.

The present invention reads and compares each sector of the read-only area instead of management information. As an example, a program area may be used.

The present invention also provides a hybrid recording medium stamped with disc information indicating that the first session is a read-only area and that the hybrid information is recorded on a recording medium recorded by a multi-session in which the subsequent area is a recordable user area. And a reading means for reading management information indicating a management form of the disc information and file directory information recorded in a read-only area of a copy source recording medium and a copy-side recording medium, and in the reading means. Recording medium determining means for determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the storage medium, the storage capacity information of the read-only area of the copy source recording medium read by the reading means, and the copy-side recording medium. For comparing the storage capacity information of read-only areas of the The information comparing means and the control means for controlling the respective means, and when the recording medium determining means determines that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control means reads the reading means. Means for reading the storage capacity information of the read-only area of the copy source recording medium and the recording information recorded in the user area, and reading the storage capacity information of the read-only area of the copy-side recording medium, The capacity information comparing means compares the storage capacity information of the copy source recording medium with the storage capacity information of the copy side recording medium, and when the comparison results indicate that both storage capacity information matches, the user area of the copy source recording medium. To record the record information recorded in the user area of the duplication-side recording medium. It provides up disk writing device.

The present invention determines whether or not backup is possible by comparing the storage capacity information of the read-only area of the recording medium recorded by the multi-session. That is, the storage source information of the copy source recording medium and the recording information recorded in the user area are read, and further, the storage capacity information of the copy side recording medium is read out, and the copy source only when the storage capacity information of both recording mediums coincide. The recording information of the user area of the recording medium is recorded in the user area of the copy-side recording medium.

The present invention also provides a hybrid recording medium stamped with disc information indicating that the first session is a read-only area and that the hybrid information is recorded on a recording medium recorded by a multi-session in which the subsequent area is a recordable user area. And a reading means for reading management information indicating a management form of the disc information and file directory information recorded in a read-only area of a copy source recording medium and a copy-side recording medium, and in the reading means. Recording medium determining means for determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the storage medium, capacity information and ID information of the read-only area of the copy source recording medium read by the reading means, and the copying side. Compare the capacity information and the ID information in the read-only area of the recording medium. A capacity ID information comparing means and control means for controlling the respective means, and when the recording medium determining means determines that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control means The reading means reads the capacity information and the ID information of the read-only area of the copy source recording medium and the record information recorded in the user area, and at the same time, the capacity information and the ID information of the read-only area of the copy-side recording medium. Is read, and the capacity ID information comparing means compares the capacity information and the ID information of the copy source recording medium with the capacity information and the ID information of the copy-side recording medium, and both the capacity information and the ID information match as a result of the comparison. The recording information recorded in the user area of the copy source recording medium, It provides a backup disk writing device for controlling to write to station.

The present invention is to determine whether backup is possible by comparing the storage capacity information and the ID information of the read-only area of the recording medium recorded by the multi-session. That is, the storage capacity information and ID information of the copy source recording medium and the record information recorded in the user area are read, and further, the storage capacity information and ID information of the copy side recording medium are read out, and the storage capacity information of both recording mediums and Only when the ID information matches, the recording information of the user area of the copy source recording medium is recorded in the user area of the copy side recording medium.

The present invention also provides a hybrid recording medium stamped with disc information indicating that the first session is a read-only area and that the hybrid information is recorded on a recording medium recorded by a multi-session in which the subsequent area is a recordable user area. A method for creating a backup disc of the present invention, comprising: a reading step of reading management information indicating a management form of the disc information and file directory information recorded in a read-only area of a copy source recording medium and a copy-side recording medium; A recording medium determining step of determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the recording information, management information of the copy source recording medium read out by the reading step, and management information of the copy side recording medium; Comparing management information comparing step and control for controlling each step And if it is determined by the recording medium determining step that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control step reads out the read-only area of the copy source recording medium by the reading step. The management information recorded in the storage area and the recording information recorded in the user area are read out, and the management information recorded in the read-only area of the duplication-side recording medium is read out. The management information of the recording medium is compared with the management information of the duplication-side recording medium, and when both comparison information is the same as the result of the comparison, recording information recorded in the user area of the duplication source recording medium is stored in the duplication-side recording medium. Provided is a method of creating a backup disc that controls recording to a user area.

The present invention determines whether or not backup is possible by comparing management information recorded in a read-only area of a recording medium recorded by a multi-session. That is, the user of the copy source recording medium only when the management information of the copy source recording medium and the record information recorded in the user area are read out, and furthermore, the management information of the copy source recording medium is read out and the management information of both recording mediums coincide. The recording information of the area is recorded in the user area of the copy-side recording medium.

The present invention also provides a hybrid recording medium stamped with disc information indicating that the first session is a read-only area and that the hybrid information is recorded on a recording medium recorded by a multi-session in which the subsequent area is a recordable user area. A method of creating a backup disc of the present invention, comprising: a reading step and a reading step of reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy-side recording medium; A recording medium determination step of judging whether or not the recording medium is a hybrid recording medium based on the read disc information, the storage capacity information of the read-only area of the copy source recording medium read by the reading step, and the reading of the copy-side recording medium. Memory capacity to compare the storage capacity information of the dedicated area And an information comparing step and a controlling step for controlling each of the steps, and when the recording medium determining step determines that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control step is executed in the reading step. By reading the storage capacity information of the read-only area of the copy source recording medium and the recording information recorded in the user area, the storage capacity information of the read-only area of the copy-side recording medium is read out, and the storage capacity information is read. The comparing step compares the storage capacity information of the copy source recording medium with the storage capacity information of the copy side recording medium, and if both storage capacity information matches as a result of the comparison, it is recorded in the user area of the copy source recording medium. To record the recorded information into the user area of the recording medium on the copy side. It features.

The present invention determines whether or not backup is possible by comparing the storage capacity information of the read-only area of the recording medium recorded by the multi-session. That is, the storage source information of the copy source recording medium and the recording information recorded in the user area are read, and further, the storage capacity information of the copy side recording medium is read out, and the copy source only when the storage capacity information of both recording mediums coincide. The recording information of the user area of the recording medium is recorded in the user area of the copy-side recording medium.

The present invention also provides a hybrid recording medium stamped with disc information indicating that the first session is a read-only area and that the hybrid information is recorded on a recording medium recorded by a multi-session in which the subsequent area is a recordable user area. A method of creating a backup disc of the present invention, comprising: a reading step and a reading step of reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy-side recording medium; A recording medium determination step of judging whether or not the recording medium is a hybrid recording medium based on the read disc information, and the storage capacity information and ID information of the read-only area of the copy source recording medium read by the reading step, and the copy-side recording. Storage capacity information and ID information in the read-only area of the medium And a control step of controlling each step of comparing the capacity ID information to be compared, and if the copy source recording medium and the copy-side recording medium are determined to be hybrid recording media by the recording medium determination step, the control step. The reading step reads the storage capacity information and ID information of the read-only area of the copy source recording medium and the recording information recorded in the user area, and at the same time, the storage capacity information of the read-only area of the copy-side recording medium. And reading the ID information, and comparing the storage capacity information and the ID information of the copy source recording medium with the storage capacity information and the ID information of the copy side recording medium by the capacity ID information comparing step; If the information and ID information match, recording information recorded in the user area of the copy source recording medium A method of creating a backup disc for controlling recording to a user area of the duplication-side recording medium is provided.

The present invention is to determine whether backup is possible by comparing the storage capacity information and the ID information of the read-only area of the recording medium recorded by the multi-session. That is, the storage capacity information and ID information of the copy source recording medium and the record information recorded in the user area are read, and further, the storage capacity information and ID information of the copy side recording medium are read out, and the storage capacity information of both recording mediums and Only when the ID information matches, the recording information of the user area of the copy source recording medium is recorded in the user area of the copy side recording medium.

The present invention also provides a recording medium in which a backup disc creation program in which a computer can control the above-described backup disc creation method is recorded in a computer-readable format.

Further, in order to achieve the second object, the present invention provides an information recording medium having a data area in which user data is recorded, wherein information on the space capacity of the data area is recorded in either or both of the data area. An information recording medium is provided.

According to this, information on the space capacity of the data area is recorded in one of the inside and outside of the data area, and the information on the space capacity is determined by the amount of information already recorded in the data area and the size of the data area. In general, the data area size of the information recording medium is not necessarily the same even if the same type of information recording medium. For example, when the original information recording medium (hereinafter referred to as [original recording medium] for convenience) is copied to another information recording medium (hereinafter referred to as [copy recording medium] for convenience), it is recorded on the copy recording medium. The content is the same as the content recorded on the original recording medium, but the free space of the data area on the copy recording medium and the free capacity of the data area on the original recording medium do not necessarily coincide. As a result, the original recording medium and the copy recording medium can be discriminated based on the information about the free space of the data area. Therefore, it becomes possible to prevent the illegal use of the recorded content without incurring a cost increase as a result.

In this case, the information recording medium of the present invention can make information on the blank capacity recorded in the data area.

Further, the information recording medium of the present invention can make the information about the blank capacity recorded as a file.

In this case, the information recording medium of the present invention may allow the file to further include information including the date on which the file was created or updated.

In addition, the information recording medium of the present invention can ensure that the information including the date is encrypted.

Further, the information recording medium of the present invention can make the information about the blank capacity encrypted.

The information recording medium of the present invention can further include a read-only area separately from the data area.

Further, the present invention is a recording method for recording information on an information recording medium, and provides a recording method including the step of recording information on a blank capacity in the information recording medium on the information recording medium.

According to this, information on the free space in the information recording medium is recorded in the information recording medium. The information about this blank capacity is determined by the amount of information already recorded on the information recording medium and the recording capacity of the information recording medium. By the way, in general, the recording capacity of the information recording medium is not necessarily the same even if the same type of information recording medium. For example, when the original recording medium is entirely copied to the copy recording medium, the content recorded on the copy recording medium is the same as the content recorded on the original recording medium, but the blank capacity of the copy recording medium and the blank capacity of the original recording medium. Does not necessarily match. This makes it possible to discriminate the original recording medium and the copy recording medium based on the information about the blank capacity. Therefore, it becomes possible to prevent the illegal use of the content recorded on the information recording medium without incurring a cost increase as a result.

In this case, the recording method of the present invention can allow the information recording medium to have a data area in which user data is recorded, and in the recording step, information on the blank capacity is recorded in the data area.

Further, the recording method of the present invention can allow the information on the free space to be recorded as a file in the recording step.

In this case, the recording method of the present invention may further include adding information to the file including the date on which the file was created or updated.

In this case, the recording method of the present invention further includes encrypting the information including the date prior to adding to the file, and adding the information including the encrypted date in the adding to the file. Can be added to the file.

Further, the recording method of the present invention further includes the step of encrypting the information on the blank capacity, prior to the recording of the information on the blank capacity on the information recording medium. In the step of recording on the information recording medium, information about the encrypted blank capacity can be recorded on the information recording medium.

Further, the present invention can make the information recording medium further include a read-only area.

Moreover, in order to achieve the said 2nd objective, this invention is an access method of recording or reproducing information about an information recording medium, Comprising: Whether the information regarding the blank capacity of the said information recording medium is recorded in the information recording medium. And determining, when the information on the space capacity is recorded, comparing the space capacity information with the actual space capacity of the information recording medium.

According to this, when recording or reproducing information on the information recording medium, it is judged whether or not information on the space capacity of the information recording medium is recorded on the information recording medium. As a result of the determination, the information on the space capacity is determined. Is recorded, the information on the blank capacity is compared with the actual blank capacity of the information recording medium. By the way, in general, the recording capacity of the information recording medium is not necessarily the same even if the same type of information recording medium. For example, in the case where the original recording medium is entirely copied to the copy recording medium, the content recorded on the copy recording medium is the same as the content recorded on the original recording medium, but the blank capacity of the copy recording medium and the original recording medium are different. Space capacities do not necessarily match. Thus, by comparing the information on the blank capacity recorded on the information recording medium with the actual blank capacity, it is possible to determine whether the information recording medium is an original recording medium or a copy recording medium. Therefore, it is possible to prevent fraudulent use of the content without incurring a cost increase as a result.

In this case, the approach of the present invention can be made to recognize that the information recording medium is original when the information on the blank capacity and the actual blank capacity match in the comparing step.

In addition, the approach of the present invention may further include the step of allowing recording or reproducing of the information recording medium when the information on the space capacity and the actual space capacity match as a result of the comparison. .

In this case, the access method of the present invention may further include updating the information on the blank capacity when information is recorded on the information recording medium so that the blank capacity of the information recording medium changes.

Furthermore, the present invention is an information recording apparatus for recording information on an information recording medium, comprising: acquiring means for acquiring information about a blank capacity of the information recording medium, and recording means for recording the information on the blank capacity on the information recording medium. It provides an information recording apparatus comprising a.

According to this, the information about the blank capacity of the information recording medium acquired by the acquiring means is recorded on the information recording medium by the recording means. The information about this blank capacity is determined by the amount of information already recorded on the information recording medium and the recording capacity of the information recording medium. By the way, in general, the recording capacity of the information recording medium is not necessarily the same even if the information recording medium of the same type. For example, when the original recording medium is entirely copied to the copy recording medium, the content recorded on the copy recording medium is the same as the content recorded on the original recording medium, but the blank capacity of the copy recording medium and the blank capacity of the original recording medium. Does not necessarily match. This makes it possible to discriminate the original recording medium and the copy recording medium based on the information about the blank capacity. As a result, it is possible to prevent fraudulent use of the content without incurring a cost increase.

In this case, the information recording apparatus of the present invention may be such that the information recording medium includes a data area in which user data is recorded, and the recording means records information about the blank capacity in the data area.

Further, the information recording apparatus of the present invention can cause the recording means to record the information on the blank capacity as a file.

In this case, the information recording apparatus of the present invention can allow the recording means to further add information including the date on which the file was created or updated to the file.

In this case, the information recording apparatus of the present invention can cause the recording means to encrypt the information including the date and add it to the file.

Further, the information recording apparatus of the present invention can allow the recording means to encrypt information on the blank capacity and to record the information on the information recording medium.

Further, the information recording apparatus of the present invention can make the information recording medium further include a read-only area.

The present invention is a processing apparatus for recording or reproducing information on an information recording medium in order to achieve the second object, and determining whether or not information on a blank capacity of the information recording medium is recorded on the information recording medium. And a judging means for comparing the information about the free space with the actual free capacity of the information recording medium when the information about the free space is recorded as a result of the determination. .

According to this, when recording or reproducing information on the information recording medium, it is judged by the judging means whether or not information on the space capacity of the information recording medium is recorded in the information recording medium. As a result of the determination, when the information on the blank capacity is recorded, the information on the blank capacity and the actual blank capacity of the information recording medium are compared by the comparing means. By the way, in general, the recording capacity of the information recording medium is not necessarily the same even if the information recording medium of the same type. For example, when the original recording medium is entirely copied to the copy recording medium, the content recorded on the copy recording medium is the same as the content recorded on the original recording medium, but the blank capacity of the copy recording medium and the blank capacity of the original recording medium. Does not necessarily match. In this case, it is possible to determine whether the information recording medium is an original recording medium or a copy recording medium by comparing the information about the empty capacity recorded on the information recording medium with the actual empty capacity. As a result, it becomes possible to prevent fraudulent use of the content.

In this case, the processing apparatus of the present invention can cause the comparing means to recognize that the information recording medium is original when the information on the blank capacity recorded on the information recording medium and the actual blank capacity match. have.

Further, the processing apparatus of the present invention can further include a control means for permitting recording or reproducing of the information recording medium when the information on the space capacity and the actual space capacity match as a result of the comparison. have.

In this case, the processing apparatus of the present invention can further include updating means for updating the information on the space capacity when information is recorded on the information recording medium and the space capacity of the information recording medium changes. .

Moreover, in order to achieve the said 2nd objective, this invention is a recording medium in which the program used for the information recording apparatus which records information in the information recording medium is recorded, The information recording medium which has the information about the blank capacity of the information recording medium is recorded. There is provided a recording medium on which a program for causing the computer for controlling the information recording apparatus to execute the recording step is recorded.

According to this, when the program of the present invention is loaded into a predetermined memory and its head address is set in the program counter, the controlling computer of the information recording apparatus records information on the blank capacity of the information recording medium in the information recording medium. That is, according to the recording medium on which the program of the present invention is recorded, the computer for controlling the information recording apparatus can execute the recording method according to the present invention, which results in recording on the information recording medium without incurring a cost increase. It is possible to prevent the illegal use of the contents.

The present invention also relates to a recording medium on which a program used in a processing apparatus for recording or reproducing information on an information recording medium is recorded, and whether or not information on a blank capacity of the information recording medium is recorded on the information recording medium. And comparing the information on the free capacity with the actual free capacity of the information recording medium when the information on the free capacity is recorded as a result of the determination. Provided is a recording medium on which a program to be executed is recorded.

According to this, when the program of the present invention is loaded into a predetermined memory and its head address is set in the program counter, the control computer of the processing apparatus determines whether or not information on the blank capacity of the information recording medium is recorded in the information recording medium. When the information on the free space is recorded as a result of the determination, the information on the free capacity is compared with the actual free capacity of the information recording medium. That is, according to the recording medium on which the program of the present invention is recorded, it is possible to execute the access method according to the present invention to the control computer of the processing apparatus, thereby preventing the illegal use of the contents without incurring a cost increase. It becomes possible.

In this case, the recording medium on which the program of the present invention is recorded is allowed to record or reproduce the information recording medium when the information on the blank capacity and the actual blank capacity match as a result of the comparison. May be further executed on the control computer.

In this case, in the recording medium on which the program of the present invention is recorded, when the information is recorded on the information recording medium and the space capacity of the information recording medium changes, updating the information about the space capacity to the control computer. You can run it in addition.

Example

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail using the Example shown in drawing. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are not merely limiting the scope of the present invention to this embodiment unless otherwise specified, and are merely illustrative examples.

1 is a schematic structural diagram of a backup disk creating apparatus 10 according to an embodiment of the present invention. The backup disk creating apparatus 10 shown in FIG. 1 includes an optical disk apparatus 20 as an information recording apparatus and a host 80 as an information processing apparatus for controlling the optical disk apparatus 20. In addition, the connection line in FIG. 1 shows typical signals and information flows, and does not show all the connection relationships of each block. The optical disk device 20 includes a spindle motor 22, an optical pickup device 23, a laser control circuit 24, an encoder 25, a motor driver for rotationally driving the optical disk 15 as an information recording medium. 27, reproduction signal processing circuit 28, servo controller 33, buffer RAM 34, buffer manager 37, interface 38, ROM 39, CPU 40, and RAM 41. And the like.

In addition, the connection line in FIG. 1 shows typical signal and information flow, and does not show all the connection relationship of each block. As an example, the optical disk device 20 corresponds to an information recording medium conforming to the CD system standard.

The optical pickup device 23 is a device for irradiating laser light onto the recording surface on which the spiral or concentric tracks of the optical disk 15 are formed and receiving the reflected light reflected on the recording surface. As an example, as shown in FIG. 2, the optical pickup device 23 includes a light source unit 51, a collimated lens 52, a beam splitter 54, an objective lens 60, a detection lens 58, and a light receiver. 59, and a drive system (focus actuator, tracking actuator, seek motor (all not shown), etc.).

The light source unit 51 is comprised including the semiconductor laser (not shown) as a light source which emits the light beam whose wavelength is 780 nm. In the present embodiment, the maximum intensity emission direction of the light beam emitted from the light source unit 51 is set to the + X direction.

The collimating lens 52 is arranged on the + X side of the light source unit 51 to make the light beam emitted from the light source unit 51 substantially parallel light. The beam splitter 54 is arranged on the + X side of the collimating lens 52 to branch the feedback light from the optical disk 15 in the -Z direction. The objective lens 60 is arranged on the + X side of the beam splitter 54 to collect a light beam passing through the beam splitter 54 to form a light spot on the recording surface of the optical disk 15.

The detection lens 58 is arranged on the -Z side of the beam splitter 54 to condense the feedback light splitted by the beam splitter 54 onto the light receiving surface of the light receiver 59. The light receiver 59 outputs a plurality of signals including wobble signal information, reproduction data information, focus error information, track error information, and the like to the reproduction signal processing circuit 28, similarly to a normal optical pickup device.

3 is an explanatory diagram of a hybrid disc. The hybrid disk has a read-only area (hereinafter referred to as ROM section) 1 and a recordable area (hereinafter referred to as RAM section) 2 in which application software or data is stamped in advance. The hybrid disc is stamped with information indicating that it is a hybrid disc. An example of this information is a disc application code (Absolute Time In Pre-groove).

4 shows the physical format of the optical disc 15 (eg CD). The lead-in area 3, the program area 4, and the lead-out area 5 constitute lead-in areas as lead information. Start time, lead-out start time, recording strategy, and the like. The lead-in start time is a manufacturer code, and each manufacturer's own time is set, and the lead-out start time is set to a value corresponding to the recording capacity, and such board information can be copied to another optical disk. none.

5 is an example of a file / directory information management form using ISO9660 commonly used in CD. Here, VD denotes a volume descriptor, PT denotes a path table, DR denotes a directory record, and FE denotes a file extent. These management information is recorded in the program area 4 of FIG. 6, and the recording position of the VD is fixed. The VD then records volume information such as files and folders thereafter. Here, the root directory information, the position and size of the path table are recorded. In the PT, information such as the position of each directory included in the volume is recorded. In the DR, information such as file and directory position and size included in the directory is recorded. In the FE, the substance (content) of the file is recorded.

7 is a flowchart for explaining a backup disk creating method according to the first embodiment of the present invention.

This flowchart corresponds to a series of processing algorithms executed by the MPU 82a in FIG. First, when the user instructs the creation of a backup disk via the input device 85, a program corresponding to the flowchart of FIG. 7 is loaded from the HDD 84 into the main memory 82b, and the head address thereof is the MPU 82a. Is set in the program counter of &quot; First, a message prompting the user to insert an optical disk to be backed up (hereinafter referred to as a copy source disk) into the optical disk device 20 is displayed on the display device 86 (step S1). Next, it is judged whether or not the copy source disk is inserted into the optical disk device 20 (step S2). Upon receiving a notification from the optical disk device 20 that a copy source disk is inserted (step S2: YES), the disk information recorded on the copy source disk is obtained through the optical disk device 20 (step S3). Next, the disk information of the copy source disk is referred to to determine whether the copy source disk is a hybrid disk or not (step S4). If the copy source disk is not a hybrid disk (step S4: No), a message indicating that the copy disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copy source disk is a hybrid disk (step S4: YES), the management information of the ROM section of the copy source disk and the recording information of the RAM section are read (step S5). Next, a message prompting the user to eject the copy source disk from the optical disk device 20 and to insert the optical disk (hereinafter referred to as the copy-side disk) to be the backup side into the optical disk device 20 is displayed. Display on device 86 (step S6). Next, it is judged whether or not the copy-side disk is inserted into the optical disk device 20 (step S7). Upon receiving a notification from the optical disk device 20 that the copy disk is inserted (step S7: YES), next, the disk information recorded on the copy disk is acquired through the optical disk device 20 (step S8). Next, the disk information of the copying disk is referred to to determine whether the copying disk is a hybrid disk or not (step S9). Here, if the copying disk is not a hybrid disk (step S9: No), a message indicating that the copying disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copying disk is a hybrid disk (step S9: YES), the management information of the ROM section of the copying disk is read (step S10), and it is determined whether the copying source and the copying management information are the same (step S11). . If not the same (step S11: No), a message indicating that the management information is different is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. If it is the same in step S11 (step S11: YES), the recording information of the replication source RAM unit is recorded in the replication-side RAM unit (step S12), and a message indicating that the creation of the backup disk is normally completed is displayed on the display device 86. Display and end the process.

As is apparent from the above description, in the backup disk creating apparatus according to the present embodiment, it is judged whether or not backup is possible by comparing management information recorded in the ROM section of the recording medium recorded by the multi-session. That is, the management information of the copy source recording medium and the record information recorded in the RAM section are read out, and furthermore, the management information of the copy side recording medium is read out, and only if the management information of both recording media is identical, The recording information of the RAM section is recorded in the RAM section of the duplication-side recording medium. As a result, it is possible to confirm whether the same information is recorded in the ROM section of the copy source and the copy-side hybrid recording medium. This makes it possible to create a backup of the hybrid recording medium while maintaining compatibility with other recording media.

In addition, by comparing and reading the entire sector instead of the management information, the comparison is easy and the comparison efficiency can be increased.

8 is a flowchart for explaining a backup disk creating method according to the second embodiment of the present invention.

This flowchart corresponds to a series of processing algorithms executed by the MPU 82a in FIG. First, when the user instructs the creation of a backup disk via the input device 85, a program corresponding to the flowchart of FIG. 8 is loaded from the HDD 84 into the main memory 82b, and the head address thereof is the MPU 82a. Is set in the program counter, and the processing of the flowchart starts. First, a message prompting the user to insert the copy source disk into the optical disk device 20 is displayed on the display device 86 (step S21). Next, it is judged whether or not the copy source disk is inserted into the optical disk device 20 (step S22). Upon receiving a notification from the optical disk device 20 that the copy source disk is inserted (step S22: YES), the disk information recorded on the copy source disk is obtained via the optical disk device 20 (step S23). Next, the disk information of the copy source disk is referred to to determine whether the copy source disk is a hybrid disk or not (step S24). If the copy source disk is not a hybrid disk (step S24: No), a message indicating that the copy disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copy source disk is a hybrid disk (step S24: YES), the ROM unit storage capacity of the copy source disk is acquired and the recording information of the RAM section is read (step S25). Next, the copy source disk is ejected from the optical disk device 20, and a message prompting the user to insert the copy-side disk into the optical disk device 20 is displayed on the display device 86 (step S26). Next, it is judged whether or not the copy-side disk is inserted into the optical disk device 20 (step S27). Upon receiving a notification from the optical disk device 20 that the copy-side disk is inserted (step S27: YES), next, the disk information recorded on the copy-side disk is acquired via the optical disk device 20 (step S28). Next, the disk information of the duplication-side disc is referred to, and it is judged whether or not the duplication-side disc is a hybrid disc (step S29). Here, if the copying disk is not a hybrid disk (step S29: No), a message indicating that the copying disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copy-side disk is a hybrid disk (step S29: YES), the ROM unit storage capacity of the copy-side disk is obtained (step S30), and it is determined whether the copy source and the copy-side storage capacity are the same (step S31). . If not the same (step S31: No), a message indicating that the storage capacity is different is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. If it is the same in step S31 (step S31: YES), the record information of the replication source RAM unit is recorded in the replication side RAM unit (step S32), and a message indicating that the creation of the backup disk is completed normally is displayed on the display device 86. FIG. And the process ends.

As is clear from the above description, it is judged whether or not backup is possible by comparing the storage capacity information of the recording medium ROM unit recorded by the multi-session. That is, the storage capacity information of the duplication source recording medium and the recording information recorded in the RAM section are read out, and furthermore, the storage capacity information of the duplication-side recording medium is read out, and only when the storage capacity information of both recording mediums coincide. The recording information of the RAM section of the recording medium is recorded in the RAM section of the copy-side recording medium. This makes it possible to confirm whether or not the information recorded in the ROM unit is matched in a shorter time than the method of comparing management information, and in a simple manner, to create a backup of the hybrid recording medium while maintaining compatibility with other recording media. Can be.

9 is a flowchart for explaining a method for creating a backup disk according to the third embodiment of the present invention.

This flowchart corresponds to a series of processing algorithms executed by the MPU 82a in FIG. First, when the user instructs the creation of a backup disk via the input device 85, a program corresponding to the flowchart of Fig. 9 is loaded from the HDD 84 into the main memory 82b, and the head address thereof is the MPU 82a. Is set in the program counter, and the processing of the flowchart starts. First, a message prompting the user to insert the copy source disk into the optical disk device 20 is displayed on the display device 86 (step S41). Next, it is judged whether or not the copy source disk is inserted into the optical disk device 20 (step S42). Upon receiving a notification from the optical disk device 20 that the copy source disk is inserted (step S42: YES), the disk information recorded on the copy source disk is obtained via the optical disk device 20 (step S43). Next, the disk information of the copy source disk is referred to to determine whether the copy source disk is a hybrid disk or not (step S44). If the copy source disk is not a hybrid disk (step S44: No), a message indicating that the copy disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copy source disk is a hybrid disk (step S44: YES), the storage capacity and ID acquisition of the copy source disk ROM section is read out, and the record information of the RAM section is read (step S45). Next, the copy source disk is ejected from the optical disk device 20, and a message for prompting the user to insert the copy-side disk into the optical disk device 20 is displayed on the display device 86 (S46). Next, it is judged whether or not the copy-side disk is inserted into the optical disk device 20 (step S47). Upon receiving a notification from the optical disk device 20 that a copy disk is inserted (step S47: YES), the disk information recorded on the copy disk is then obtained through the optical disk device 20. (Step S48). Next, the disk information of the copy-side disk is referred to to determine whether the copy-side disk is a hybrid disk (step S49). If the copying disk is not a hybrid disk (step S49: No), a message indicating that the copying disk is not a hybrid disk is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. On the other hand, if the copy-side disk is a hybrid disk (step S49: YES), the storage capacity and ID of the copy-side disk ROM section are acquired (step S50), and it is determined whether the copy source and the copy-side storage capacity and ID are the same ( Step S51). If it is not the same (step S51: No), a message indicating that the storage capacity is different is displayed on the display device 86, and the processing ends. In other words, creation of the backup disk is not performed. If it is the same in step S51 (step S51: YES), the record information of the replication source RAM unit is recorded in the replication side RAM unit (step S52), and a message indicating that the creation of the backup disk is normally completed is displayed on the display device 86. Display and end the process. In addition, the ID described here exists in the ID 4b portion separately from the management information 4a of the program area 4 as shown in FIG.

As is clear from the above description, it is judged whether or not backup is possible by comparing the storage capacity information and the ID information of the ROM section of the recording medium recorded by the multi-session. That is, the storage capacity information and ID information of the copy source recording medium and the record information recorded in the user area are read, and further, the storage capacity information and ID information of the copy side recording medium are read out, and the storage capacity information of both recording mediums and Only when the ID information matches, the recording information of the RAM section of the copy source recording medium is recorded in the RAM section of the copy side recording medium. Thereby, compared with the method of comparing the storage capacity of the ROM part, the accuracy of the information matching confirmation recorded in the ROM part can be improved.

In addition, this invention is not limited to this, of course. That is, the above embodiment is merely an example, and at least some of the components of the components realized by the processing according to the program of the MPU 82a may be configured by hardware, or all the components are configured by hardware. You may also do it.

Below, another Example of this invention is described according to FIGS. 10-18.

10 is a diagram showing a schematic configuration of an optical disk device 120 as an information recording device and a processing device according to an embodiment of the present invention.

The optical disk device 120 shown in FIG. 10 includes a spindle motor 122, an optical pickup device 123, and the optical pickup device for rotationally driving an optical disk 115 as an information recording medium according to an embodiment of the present invention. The seek motor 121, the laser control circuit 124, the encoder 125, the drive control circuit 126, the reproduction signal processing circuit 128, the buffer RAM 134, for driving the 123 in the slit direction; A buffer manager 137, an interface 138, a flash memory 139, a CPU 140, a RAM 141, and the like are provided. In addition, the arrow in FIG. 10 shows a typical signal or information flow, and does not show all the connection relationship of each block.

The interface 138 is a two-way communication interface with the host device 190 (eg, a personal computer), and is connected to standard interfaces such as AT Attachment Packet Interface (ATAPI), Small Computer System Interface (SCSI), and Universal Serial Bus (USB). It conforms.

The buffer RAM 134 temporarily stores data (recording data) recorded on the optical disk 115, data reproduced from the optical disk 115 (reproduction data), and the like. Data input / output to the buffer RAM 134 is managed by the buffer manager 137.

The optical pickup device 123 is a device for condensing laser light on the recording surface of the optical disk 115 and receiving the reflected light reflected from the recording surface. The optical pickup device 123 includes a semiconductor laser and an objective lens, guides the light beam emitted from the semiconductor laser to the recording surface of the optical disk 115, and guides the return light beam reflected from the recording surface to a predetermined light receiving position. And an optical system arranged at the light receiving position to receive the feedback light beam, a drive system (focus actuator and tracking actuator) (both not shown), and the like. The light receiver includes a plurality of light receiving elements (or light receiving regions), and a signal corresponding to the amount of light received therefrom is output to the reproduction signal processing circuit 128.

The reproduction signal processing circuit 128 acquires a servo signal (focus error signal, track error signal, etc.), address information, synchronization signal, RF (Radio Frequency) signal, and the like based on the output signal of the light receiver. The servo signal obtained here is output to the drive control circuit 126, address information is output to the CPU 140, and the synchronization signal is output to the encoder 125, the drive control circuit 126, and the like. Further, the reproduction signal processing circuit 128 performs decoding processing, error detection processing, etc. on the RF signal, performs error correction processing when an error is detected, and then executes the buffer through the buffer manager 137 as reproduction data. Stored in the RAM 134. The reproduction data stored in the buffer RAM 134 is transmitted to the host device 190 in sector units.

The drive control circuit 126 generates a drive signal of the tracking actuator for correcting the positional difference of the objective lens with respect to the tracking direction based on the track error signal from the reproduction signal processing circuit 128. The driving signal of the focus actuator is generated to correct the focus difference of the objective lens based on the focus error signal. Each driving signal generated here is output to the optical pickup device 123. This performs tracking control and focus control. The drive control circuit 126 also generates a drive signal for driving the seek motor 121 and a drive signal for driving the spindle motor 122 based on the instruction of the CPU 140. Each drive signal is output to the seek motor 121 and the spindle motor 122, respectively.

The flash memory 139 stores various programs including a program according to the present invention described as a code decipherable to the CPU 140, recording conditions including recording power or recording stratification information, light emission characteristics of a semiconductor laser, and the like. It is.

The encoder 125 extracts the recording data stored in the buffer RAM 134 through the buffer manager 137 based on the instruction of the CPU 140, and modulates the data and adds an error correction code. After that, a recording signal to the optical disk 115 is generated. The write signal generated here is output to the laser control circuit 124.

The laser control circuit 124 controls the light emission power of the semiconductor laser constituting the optical pickup device 123. For example, at the time of recording, the driving signal of the semiconductor laser is generated in the laser control circuit 124 based on the recording signal, the recording conditions, the light emission characteristics of the semiconductor laser, and the like.

The CPU 140 controls the operation of each unit according to a program stored in the flash memory 139, and also stores data necessary for the control in the RAM 41 and the buffer RAM 134.

As an example, the optical disc 115 has the same physical properties as the CD-based information recording medium. As an example, as shown in FIG. 11, a read-only area (hereinafter referred to as [ROM portion]) in which content is recorded. ), And a hybrid disk having an area where data can be additionally recorded as a data area (hereinafter referred to as a RAM section). In this case, information is recorded in a multi-session manner, and the ROM section is the first session. In the RAM section, as shown in FIG. 12 as an example, a second session including a lead-in area, a program area, a lead-out area, and the like is formed. It is. As an example, as shown in FIG. 13, a file (hereinafter referred to as "space capacity information") relating to the space capacity of the RAM section of the optical disk 115 is included in the final sector of the program area (hereinafter, [ Blank capacity file). Here, the final sector of the program area includes synchronization information (Sync), header information (Header), data (Data), an error detection code (EDC: Error Detection Code), an error correction code (ECC: Error Correction Code), and a blank ( Blank), and the blank file is included in the data. The free space file further includes, as file data, information on a date and time when the free space file was created or updated (hereinafter referred to as [temporary information]). This date and time information is further recorded in the file management information area as one of the file management information regarding the blank capacity file. Blank space files are also encrypted. In other words, both the blank capacity information and the date and time information are encrypted. In addition, although the file encryption method currently used generally is used for the encryption of a blank space file, it is not specifically limited. For example, a file encryption method according to the importance of the content may be used. It is also assumed that the decryption key used for decryption of the blank capacity file is recorded on the optical disk 115.

<< reproduction processing >>

Next, a process when the optical disk device 120 configured as described above receives a playback request command from the host device 190 will be described with reference to FIG. The flowchart of FIG. 14 corresponds to a series of processing algorithms executed by the CPU 140.

When receiving a playback request command for requesting playback of content from the host apparatus 190, the start address of a program (hereinafter referred to as "playback processing program") corresponding to the flowchart of FIG. 14 is transferred to the program counter of the CPU 140. Is set and playback processing is started.

First, in step S401, it is determined whether or not a blank capacity file is recorded on the optical disk 115. FIG. If a blank capacity file is recorded in the last sector of the program area of the second session (step S401: YES), the process proceeds to step S403.

In this step S403, a blank capacity file is read from the optical disk 115, decrypted using a decryption key, and the file data is stored in the RAM 41.

In the next step S405, the free space information is extracted from the file data stored in the RAM 41. Then, the free space indicated by the free space information (hereinafter referred to as "first free space" for convenience) is obtained.

In the next step S407, the actual free space capacity (hereinafter referred to as [second free space capacity] for convenience) of the RAM section of the optical disc 115 is obtained.

In the next step S409, it is determined whether the first free space and the second free space are the same. If the first free space and the second free space are equal to each other (step S09: YES), the determination here is affirmed and the process proceeds to step S411.

In this step S411, temporal information (hereinafter referred to as [first temporal information] for convenience) is extracted from the file data stored in the RAM 41.

In the next step S413, temporal information (hereinafter referred to as [second temporal information] for convenience) of the empty capacity file is obtained from the file management information.

In the next step S415, it is determined whether the first date and time information and the second date and time information coincide with each other. If the first date and time information and the second date and time information coincide with each other (step S415: YES), the determination here is affirmed and the process proceeds to step S417.

In this step S417, the optical disk 115 is regarded as the original and reproduction is permitted. As a result, as described above, the reproduction data is acquired by the reproduction signal processing circuit 128 based on the output signal of the optical pickup device 123 and accumulated in the buffer RAM 134. Is sent).

In the next step S419, it is determined whether or not reproduction of the designated content is completed. If the reproduction is not completed, the determination here is denied, and after a predetermined time elapses, it is determined whether the reproduction is completed again. That is, it waits until playback of the specified content is completed. When the reproduction of the designated content is completed, the determination here is affirmed and the reproduction processing ends.

If the first free space information and the second free space are different from each other in step S409 (step S409: No), the determination in step S409 is denied, and the flow advances to step S421. In this step S421, the optical disk 115 is regarded as being copied illegally, and the host device 190 is notified of the impossibility of reproduction. Then, the reproduction processing ends. That is, playback of the specified content is not performed.

If the first date and time information and the second date and time information are different from each other (step S415: No), the determination in step S415 is denied and the process proceeds to step S421. That is, playback of the specified content is not performed.

In this manner, it is possible to determine whether the optical disk 115 is original or illegally copied based on the blank capacity information and the date and time information. If copying is illegally performed, unauthorized copying can be substantially prevented by disallowing reproduction.

If a blank capacity file is not recorded on the optical disc 115 in step S401 (step S401: no), the determination in step S401 is denied, and the process proceeds to step S421. In other words, the optical disk 115 is regarded as an illegally copied disk, and prohibits reproduction of specified contents.

<< record processing >>

Next, a process when the optical disk device 120 configured as described above receives a user data recording request command for the optical disk 115 from the host device 190 will be described with reference to FIG. The flowchart in FIG. 15 corresponds to a series of processing algorithms executed by the CPU 140.

Upon receiving the write request command from the host apparatus 190, the start address of the program (hereinafter referred to as [record processing program]) corresponding to the flowchart of FIG. 15 is set in the program counter of the CPU 140, and recording processing starts. do. Writing to the optical disk 115 is also performed through the encoder 125, the laser control circuit 124, the optical pickup device 123, and the like. Also, the user data requested for recording is recorded in the third session.

First, in step S501, it is determined whether or not a blank capacity file is recorded on the optical disk 115. If a blank capacity file is recorded in the last sector of the program area of the second session (step S501: YES), the determination here is affirmative and the process proceeds to step S503.

In the steps S503 to S507, the same processing as in the above steps S403 to S407 is performed.

In the next step S509, it is determined whether the first free space information and the second free space are the same. If the first free space information and the second free space are equal to each other (step S509: YES), the determination here is affirmed and the process proceeds to step S511.

In steps S511 and S513, the same processing as in steps S411 and S413 is performed.

In the next step S515, it is determined whether the first date and time information and the second date and time information coincide with each other. If the first date and time information and the second date and time information coincide with each other (step S515: YES), the determination here is affirmed and the process proceeds to step S517.

In this step S517, the free space of the RAM portion of the optical disk 115 after recording is calculated. Here, the free space after the user data and the free space file are recorded is calculated.

In the next step S519, the free space file is updated based on the calculated free space.

In the next step S521, update date and time information of the free space file is added to the free space file.

In the next step S523, the updated empty capacity file is encrypted.

In the next step S525, the encrypted blank capacity file is added to the recording data together with the decryption key. Here, the updated free space file is added to a position corresponding to the last sector of the program area of the third session. In addition, since the size of the program area has a lower limit, when the data amount of the recording data is small, dummy data may be inserted between the recording data and the updated free space file.

In the next step S527, recording is allowed.

In the next step S529, it is determined whether or not the recording of the user data has been completed. If the recording of the user data is not completed, the determination here is denied, and after a predetermined time elapses, it is again determined whether or not the recording of the user data has been completed. That is, it waits until the recording of user data is completed. When the recording of the user data is completed, the determination here is affirmed and the process proceeds to step S531.

Here, as an example, as shown in Fig. 16, the updated free space file is recorded in the last sector of the program area of the third session.

In the next step S531, the host device 190 is notified of the completion of the recording. Then, the recording process ends.

If the first empty capacity information and the second empty capacity are different from each other in step S509 (step S509: No), the determination in step S509 is denied, and the process proceeds to step S533. In this step S533, the optical disk 115 is deemed to have been copied illegally, and notifies the host apparatus 190 of the inability to record. Then, the recording process ends. That is, recording of user data is not performed.

In step S515, if the first date and time information and the second date and time information are different from each other (step S515: No), the determination in step S515 is denied, and the flow advances to step S533. That is, recording of user data is not performed.

In this manner, it is possible to determine whether the optical disk 115 is original or illegally copied based on the blank capacity information and the date and time information. If the copy is made illegally, the unauthorized copying can be substantially prevented by disallowing recording.

If the blank capacity file is not recorded in the optical disk 115 in step S501, the determination in step S501 is denied, and the process proceeds to step S533. That is, the optical disk 115 is considered to have been copied illegally, and the recording of user data is prohibited.

As is apparent from the above description, in the optical disk device 120 according to the present embodiment, the acquisition means, the determination means, the comparison means, and the control means are realized by the CPU 140 and a program executed by the CPU 140. . That is, the acquiring means is realized by step S517 of FIG. 15, and the determining means is realized by step S401 of FIG. 14 and step S501 of FIG. 15, and by steps S403 to S415 of FIG. 14 and steps S503 to S515 of FIG. 15. The comparison means is realized, and the control means is realized by step S417 of FIG. 14 and step S527 of FIG. 15.

In addition, the recording means and the update are executed by the optical pickup device 123, the laser control circuit 124, the encoder 125, the CPU 140, and the programs (steps S519 to S527 in Fig. 15) executed in the CPU 140. Means are realized.

In addition, at least a part of each means realized by the processing by the program by the CPU 140 may be configured by hardware, or may be configured by hardware.

In the present embodiment, among the programs recorded in the flash memory 139 as a recording medium, the program according to the present invention is constituted by the reproduction processing program and the recording processing program. That is, the procedure for recording the information regarding the empty capacity of the information recording medium into the information recording medium by the program corresponding to the processing of steps S517 to S527 in FIG. 15 is configured. In addition, the program corresponding to the process of step S401 of FIG. 14, the step of judging by the program corresponding to the process of step S501 of FIG. 15, and the program corresponding to the process of steps S403 to S415 of FIG. 14, A step of comparing is performed by a program corresponding to the processing of steps S503 to S515 in FIG. 15. In addition, the step corresponding to the program corresponding to the processing in step S417 in FIG. 14 and the program corresponding to the processing in step S527 in FIG. 15 is configured, and updated by the program corresponding to the processing in steps S519 to S527 in FIG. 15. The steps are configured.

Then, in the recording method according to the present invention, the step of recording the information on the empty capacity of the information recording medium in the recording method according to the present invention by the processing in step S527 of FIG. 15 is carried out, and in the file by the processing in step S521 in FIG. The step of adding is being carried out. In addition, the step of encrypting is performed by the process of step S523 of FIG. 15.

In addition, the determination of the approach method according to the present invention is carried out by the processing of step S401 of FIG. 14 and step S501 of FIG. 15, the processing of steps S403 to S415 of FIG. 14, and the steps S503 to S515 of FIG. 15. The comparison is carried out by the process, the step of allowing by the process of step S417 of FIG. 14 and the process of step S527 of FIG. 15 is performed, and the step of updating by the process of steps S519 to S527 of FIG. 15 is performed. It is becoming.

As described above, according to the optical disk apparatus (information recording apparatus and processing apparatus) according to the present embodiment, if there is a request to reproduce content from the host apparatus 190, the program area of the optical disk 115 (information recording medium) Reads the free space file recorded in the (part of data area), the free space capacity (first free space) indicated by the free space information included in the free space file matches the actual free space (second free space), At the same time, when the date and time information (first date and time information) included in the blank capacity file and the date and time information (second date and time information) in the file management information coincide, the optical disc 115 is judged to be original and playback of the content is started. Granted. On the other hand, when the first blank capacity and the second blank capacity do not match, or when the first date and time information and the second date and time information do not coincide, it is determined that the optical disk 115 is copied illegally and playback of the content is performed. Prohibited. This makes it possible to reliably prevent access to an optical disk whose contents are copied illegally regardless of the type of optical disk. As a result, it is possible to prevent fraudulent use of the contents recorded in the original without incurring a cost increase.

If a request for recording user data is requested from the host device 190, a blank capacity file recorded in the program area of the optical disk 115 is read, and the first blank capacity and the second blank capacity coincide with each other. When the first date and time information and the second date and time information coincide with each other, the optical disk 115 is judged to be original and the recording of the user data is permitted. On the other hand, when the first blank capacity and the second blank capacity do not coincide, or when the first date and time information and the second date and time information do not coincide, it is determined that the optical disk 115 is copied illegally, Records are prohibited. This makes it possible to reliably prohibit recording on an optical disk other than the original regardless of the type of optical disk. As a result, it is possible to prevent illegal copying of the contents recorded in the original without incurring a cost increase.

In other words, in the present embodiment, in the recording process, the information regarding the blank capacity is recorded on the optical disk 115, so that, for example, even if the optical disk 115 is copied to another information recording medium based on the information about the blank capacity, It is possible to discriminate the original recording medium and the copied recording medium. Therefore, it becomes possible to prevent the illegal copying and the illegal use of the recorded content without incurring a cost increase as a result.

In this embodiment, in order to check the validity of the disk 115 for a request for access to the optical disk 115, information about the blank capacity recorded on the optical disk 115 and the actual blank of the optical disk 115 are shown. Based on the capacity, it is judged whether or not the optical disk 115 is original. This makes it possible to prohibit access to a disc that has been illegally copied, and as a result, it is possible to prevent unauthorized use of the recorded content without incurring a cost increase.

In this embodiment, when the user data is recorded on the optical disc 115 and the free space changes, the free space file is updated. This makes it possible to quickly determine whether or not the optical disk 115 is original for subsequent access requests. When the free space file is updated, the updated free space file is recorded on the optical disk 115. As a result, even when the optical disk 115 is once discharged and set again, it is possible to quickly and accurately judge whether the optical disk 115 is original or not.

In this embodiment, since the blank capacity file is encrypted and recorded, alteration of the file data can be prevented.

Further, according to the optical disk 115 according to the present embodiment, since information on the blank capacity is recorded, for example, even if the optical disk 115 is copied to another information recording medium as a whole, it is based on the information on the blank capacity. Thus, the original recording medium and the copied recording medium can be discriminated. As a result, it is possible to prevent fraudulent use of the recorded content without incurring a cost increase.

In addition, since the date and time information is added to the blank capacity file recorded on the optical disk 115, it is possible to discriminate the original recording medium and the copied recording medium with higher accuracy. In the copied recording medium, copy date and time information is recorded in the file management information area.

In addition, since the blank capacity file recorded on the optical disk 115 is encrypted, alteration of file data can be prevented.

In the above embodiment, the case where the optical disk 115 has the same physical properties as that of the CD-based information recording medium has been described. However, the present invention is not limited thereto, and the physical disk equivalent to, for example, the DVD-based information recording medium has been described. It may be provided with the property, and may be provided with the physical property equivalent to the next-generation information recording medium corresponding to the light whose wavelength is 405 nm.

Incidentally, in the above embodiment, the case where the decryption key used for decryption of the blank capacity file is recorded on the optical disk 115 has been described. However, the present invention is not limited thereto, and the user inputs through the host apparatus 190, for example. Also good. In the above embodiment, the validity of the decryption key is not checked when the blank capacity file is decrypted, but the validity of the decryption key may be confirmed.

In the above embodiment, the case where the RAM section is an additional recordable area has been described. However, the present invention is not limited to this and may be a rewritable area. In this case, for example, a specific area for recording a blank capacity file is set in advance, and when the blank capacity changes, the updated blank capacity file may be rewritten and recorded in the specific area.

In the above embodiment, the case where the optical disk 115 is a hybrid disk having a ROM section and a RAM section has been described. However, the present invention is not limited to this, and may be a disk having only a RAM section. For example, CD-R or CD-RW currently commercially available may be used. Of course, any of next-generation information recording media corresponding to DVD-R, DVD-RW, DVD + R, DVD + RW, and light having a wavelength of 405 nm may be used. When the optical disc 115 is a DVD disc, a DVD recorder may be used as the information recording apparatus and a DVD player may be used as the processing apparatus.

In the above embodiment, the case where the blank capacity file is recorded in the last sector of the program area has been described, but the present invention is not limited to this. For example, it may be recorded at the head of the program area, or may be recorded immediately after the data recorded in the program area.

In the above embodiment, the case where the blank capacity information is recorded as a file has been described, but the present invention is not limited thereto. In this case, however, since the file management information does not exist, determination based on the date and time information is not performed (see Figs. 17 and 18).

In the above embodiment, the case where the blank capacity file is encrypted and recorded on the optical disk 115 has been described. However, when the importance of the content is low or there is little possibility that the file data is modified, it is not necessary to encrypt the file. In this case, the decoding in steps S403 and S503 and the processing in step S523 are unnecessary.

In the above embodiment, the case where the optical disc 115 determines that it is not the original when the first date and time information and the second date and time information do not completely match has been described. And second date and time information may be considered to coincide.

Incidentally, in the above embodiment, the case where the temporary capacity file is included in the empty capacity file has been described. However, the present invention is not limited to this. Instead of the temporary information, for example, information regarding the date on which the empty capacity file was created or updated (hereinafter, [ Date information). In this case, date information is used in place of date and time information in steps S411 to S415, steps S511 to S515, and step S521.

In the above embodiment, a case has been described in which the optical disc 115 determines to be original when the first blank capacity and the second blank capacity coincide, and at the same time, the first date and time information and the second date and time information coincide. For example, when the importance of the content is low, as shown in FIGS. 17 and 18 as an example, when the first blank capacity and the second blank capacity coincide, the optical disc 115 may be immediately determined to be the original. This can shorten the time required for the judgment. In this case, the temporal information may not be included in the empty capacity file. In addition, the flowchart of FIG. 17 omits steps S411 to S415 in the flowchart of FIG. 14, and the flowchart of FIG. 18 omits steps S511 to S515 and step S521 of the flowchart of FIG. 15.

In the above embodiment, the case of recording in the multi-session method has been described, but the present invention is not limited thereto.

In the above embodiment, the program according to the present invention is recorded in the flash memory 139, but may be recorded in another recording medium (CD, optical magnetic disk, DVD, memory card, USB memory, flexible disk, etc.). In this case, the program according to the present invention may be loaded into the flash memory 139 through a playback device (or dedicated interface) corresponding to each recording medium. The program according to the present invention may be transferred to the flash memory 139 via a network (LAN, intranet, Internet, etc.). In short, the program according to the present invention may be loaded into the flash memory 139.

In the above embodiment, the program according to the present invention may be recorded in the ROM section of the optical disk 115. In this case, when the optical disk 115 is set in the optical disk device 120, the program according to the present invention is loaded from the optical disk 115 into the flash memory 139.

In the above embodiment, the case where the optical pickup device includes one semiconductor laser has been described, but the present invention is not limited to this, and may include, for example, a plurality of semiconductor lasers emitting light beams having different wavelengths. In this case, for example, the semiconductor laser device may include at least one of a semiconductor laser that emits a light beam having a wavelength of about 405 nm, a semiconductor laser that emits a light beam having a wavelength of about 660 nm, and a semiconductor laser that emits a light beam having a wavelength of about 780 nm. good. That is, the optical disk device may be an optical disk device corresponding to a plurality of types of optical disks conforming to different standards. In this case, a blank capacity file may be recorded on at least one optical disk.

In the above embodiment, the case where the information recording medium is an optical disc has been described, but the present invention is not limited thereto. In this case, an information recording apparatus corresponding to the information recording medium is used instead of the optical disk apparatus.

In the above embodiment, the case where the processing device is the optical disk device 120 has been described, but the present invention is not limited to this. For example, the processing device may include the optical disk device 120 and the host device 190. good. In this case, in the above embodiment, at least a part of each means realized by the CPU 140 may be realized by the host apparatus 190.

As described above, the information recording medium of the present invention is suitable for preventing the illegal use of the recorded content without causing an increase in cost. Moreover, the recording method and the information recording apparatus of the present invention are suitable for preventing the illegal use of the contents recorded on the information recording medium without incurring a cost increase. Moreover, the access method and processing apparatus of the present invention are suitable for preventing the illegal use of content without incurring a cost increase. Further, the program and the storage medium of the present invention are suitable for preventing the illegal use of contents without incurring a cost increase in the computer for controlling the information recording apparatus and the processing apparatus.

According to the present invention, both the copy source and the copy-side recording medium are hybrid recording media, and recording is recorded in the user area of the copy source recording medium only when the management information recorded in the copy source and the copy-side read-only area is the same. Since the information is recorded in the user area of the copy-side recording medium, it is possible to confirm whether or not the same information is recorded in the read-only areas of the copy source and the copy-side hybrid recording medium. This makes it possible to create a backup of the hybrid recording medium while maintaining compatibility with other recording media.

In addition, according to the present invention, since all sectors are read and compared instead of management information, comparison is easy and comparison efficiency can be improved.

According to the present invention, both the copy source and the copy-side recording medium are hybrid recording media, and recording information recorded in the user area of the copy source recording medium only when the storage capacity of the copy source and the copy-side read only area is the same. Is recorded in the user area of the copy-side recording medium, so that it is possible to confirm whether or not the information recorded in the read-only area matches in a shorter time than the method of comparing the management information, thereby maintaining compatibility with other recording media in a simple manner. You can create a backup of the hybrid recording medium.

According to the present invention, both the copy source and the copy-side recording medium are hybrid recording media, and are recorded in the user area of the copy source recording medium only when the storage capacity and ID of the copy source and the copy-side read-only area are the same. Since the recording information is recorded in the user area of the copy-side recording medium, it is possible to improve the checking accuracy as to whether or not the information recorded in the read-only area is matched as compared with the method of comparing the storage capacity of the read-only area.

In addition, according to the present invention, by recording a program programmed so that the computer can control the backup disk method of the present invention on a recording medium in a computer-readable format, the recording medium can be easily transported and the program can be freely run anywhere. Can be.

In addition, according to the present invention, since the information about the free space of the data area is recorded in either the inside or outside of the data area, the original recording medium and the copy recording medium are discriminated based on the information about the free space of the data area. It becomes possible. Therefore, it is possible to prevent fraudulent use of the recorded content in a simple manner without incurring a cost increase as a result.

Further, according to the present invention, since the information on the space capacity is recorded in the data area, it is possible to prevent the illegal use of the recorded content in a simple manner.

In addition, according to the present invention, since the information on the space capacity is recorded as a file, it is possible to prevent unauthorized use of the content recorded in a simple manner.

In addition, since the file further includes information including the date on which the file is created or updated, the file can be prevented from being illegally used in a simple manner.

In addition, since the information including the date is encrypted, it is possible to prevent unauthorized use of the recorded content in a simple manner.

In addition, since the information on the free space is encrypted, it is possible to prevent unauthorized use of the recorded content in a simple manner.

In addition, a read-only area is additionally provided separately from the data area, thereby preventing unauthorized use of the recorded content in a simple manner.

Claims (41)

A backup disk creating apparatus for a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session in which the first session is stamped as a read-only area and the subsequent area is a recordable user area. To Reading means for reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; Recording medium determining means for determining whether or not the recording medium is a hybrid recording medium based on the disc information read by the reading means; Management information comparing means for comparing management information of the copy source recording medium read by the reading means with management information of the copy side recording medium; Control means for controlling each of said means, When it is determined by the recording medium determining means that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control means manages that the reading means is recorded in the read-only area of the copy source recording medium. The information and the record information recorded in the user area are read, and the management information recorded in the read-only area of the copy-side recording medium is read, and the management information comparison means manages the management information of the copy source recording medium. And management information of the duplication-side recording medium, and when both management information is the same as the result of the comparison, recording information recorded in the user area of the duplication source recording medium is recorded in the user area of the duplication-side recording medium. And a backup disk creating apparatus, characterized in that the control is to control. The method of claim 1, The control means reads the sector of the file / folder management information portion recorded in the read-only area of the copy source recording medium and the copy side recording medium, and compares the sectors to compare the sectors of the copy source recording medium and the copy side recording medium. And determining whether or not the same information is recorded in the read-only area. A backup disk creating apparatus for a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session in which the first session is stamped as a read-only area and the subsequent area is a recordable user area. To Reading means for reading management information indicating a management form of the disc information and file directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; Recording medium determining means for determining whether or not the recording medium is a hybrid recording medium based on the disc information read by the reading means; Capacity information comparing means for comparing the storage capacity information of the read-only area of the copy source recording medium read by the reading means with the storage capacity information of the read-only area of the copy-side recording medium; Control means for controlling each of said means, When it is determined by the recording medium determining means that both the copy source recording medium and the copy side recording medium are hybrid recording mediums, the control means reads out the storage capacity information of the read-only area of the copy source recording medium by the reading means. At the same time as reading the record information recorded in the user area, the storage capacity information of the read-only area of the duplication-side recording medium is read, and the storage capacity information of the copy source recording medium and the copy by the capacity information comparison means The storage capacity information of the side recording medium is compared, and when both storage capacity information match as a result of the comparison, control is made to record the recording information recorded in the user area of the copy source recording medium in the user area of the copy side recording medium. A backup disk creating apparatus, characterized in that. A backup disk creating apparatus for a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session in which the first session is stamped as a read-only area and the subsequent area is a recordable user area. To Reading means for reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; Recording medium determining means for determining whether or not the recording medium is a hybrid recording medium based on the disc information read by the reading means; Capacity ID information comparing means for comparing the storage capacity information and the ID information of the read-only area of the copy source recording medium read by the reading means with the storage capacity information and the ID information of the read-only area of the copy side recording medium; Control means for controlling each of the means; When it is determined by the recording medium determining means that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control means reads the storage capacity information of the read-only area of the copy source recording medium by the reading means; At the same time as reading the ID information and the recording information recorded in the user area, the storage capacity information and the ID information of the read-only area of the duplication-side recording medium are read, and the copy source recording medium is read by the capacity ID information comparison means. Compares the storage capacity information and the ID information with the storage capacity information and the ID information of the duplication-side recording medium, and if the comparison results in that both the storage capacity information and the ID information match, they are recorded in the user area of the copy source recording medium. Characterized in that the recording information is recorded in the user area of the copy-side recording medium. Up disk creation device. A method for creating a backup disk of a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session recording a first session as a read-only area and a subsequent area as a recordable user area. To A reading step of reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; A recording medium determination step of determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the reading step; A management information comparing step of comparing management information of the copy source recording medium read by the reading step with management information of the copy side recording medium; A control step of controlling each of said steps, If it is determined by the recording medium determination step that both the copy source recording medium and the copy side recording medium are both hybrid recording media, in the control step, the management is recorded in the read-only area of the copy source recording medium by the reading step. The information and the record information recorded in the user area are read, and the management information recorded in the read-only area of the copy-side recording medium is read out, and the management information of the copy source recording medium is carried out by the management information comparison step. And the management information of the duplication-side recording medium, and when the comparison results both management information, record the record information recorded in the user area of the duplication-source recording medium in the user area of the duplication-side recording medium. Backup disk creation method characterized in that the control. A method for creating a backup disk of a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session in which the first session is stamped as a read-only area and the subsequent area is a recordable user area. To A reading step of reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; A recording medium determination step of determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the reading step; A storage capacity information comparing step of comparing the storage capacity information of the read-only area of the copy source recording medium read by the reading step with the storage capacity information of the read-only area of the copy-side recording medium; A control step of controlling each of said steps, When it is determined by the recording medium determination step that both the copy source recording medium and the copy side recording medium are hybrid recording media, the control step includes the storage capacity information of the read-only area of the copy source recording medium by the reading step. At the same time as reading the record information recorded in the user area, the storage capacity information of the read-only area of the copy-side recording medium is read, and the storage capacity information of the copy source recording medium and the storage capacity information are compared by the comparing step of the storage capacity information. The storage capacity information of the duplication-side recording medium is compared, and when the comparison results in that both storage capacity information coincide, the recording information recorded in the user area of the copy recording medium is recorded in the user area of the duplication-side recording medium. Backup disk creation method characterized in that the control. A method for creating a backup disk of a hybrid recording medium stamped with a disc information indicating that the first session is a hybrid recording medium in a recording medium recorded by a multi-session in which the first session is stamped as a read-only area and the subsequent area is a recordable user area. To A reading step of reading management information indicating a management form of the disc information and file / directory information recorded in a read-only area of a copy source recording medium and a copy side recording medium; A recording medium determination step of determining whether the recording medium is a hybrid recording medium or not based on the disc information read by the reading step; A capacity ID information comparing step of comparing the storage capacity information and the ID information of the read-only area of the copy source recording medium read by the reading step with the storage capacity information and the ID information of the read-only area of the copy-side recording medium; A control step of controlling each of said steps, If it is determined by the recording medium determination step that both the copy source recording medium and the copy side recording medium are hybrid recording media, then in the control step, the read step, the storage capacity information of the read-only area of the copy source recording medium and At the same time as reading the ID information and the recording information recorded in the user area, the storage capacity information and the ID information of the read-only area of the duplication-side recording medium are read, and the copy source recording medium is carried out by the capacity ID information comparison step. Compare the storage capacity information and the ID information with the storage capacity information and the ID information of the duplication-side recording medium, and if the comparison result shows that both the storage capacity information and the ID information coincide, they are recorded in the user area of the duplication source recording medium. Characterized in that the recording information is controlled to be recorded in the user area of the copy-side recording medium. How to create a backup disk. A recording medium comprising a computer-readable format of a backup disc creation program in which a computer can be programmed to control the backup disc creation method according to any one of claims 5 to 7. An information recording medium comprising a data area in which user data is recorded, An information recording medium, characterized in that information relating to the free space of the data area is recorded in either or both of the data area. The method of claim 9, Information recording medium, characterized in that the information about the free space is recorded in the data area. The method of claim 9, An information recording medium, characterized in that the information about the free space is recorded as a file. The method of claim 11, And the file further includes information including the date on which the file was created or updated. The method of claim 12, The information recording medium comprising the date is encrypted. The method of claim 9, An information recording medium, characterized in that the information on the blank capacity is encrypted. The method of claim 9, And a read only area separate from said data area. A recording method for recording information on an information recording medium, And recording information on the blank capacity in the information recording medium on the information recording medium. The method of claim 16, The information recording medium has a data area in which user data is recorded, And the information on the free space in the recording step is recorded in the data area. The method of claim 16, And the information on the free space in the recording step is recorded as a file. The method of claim 10, And adding information to the file including the date when the file was created or updated. The method of claim 11, Encrypting the information including the date prior to adding to the file, The adding method to the file, characterized in that for adding the information including the encrypted date to the file. The method of claim 16, Encrypting the information about the free space prior to recording the information about the free space on the information recording medium, And recording the information on the free space on the information recording medium, recording the information on the encrypted blank capacity on the information recording medium. The method of claim 16, And the information recording medium further comprises a read-only area. An access method for performing recording or reproduction of information on an information recording medium, Determining whether or not information on a blank capacity of the information recording medium is recorded on the information recording medium; And when the information on the free space is recorded as a result of the determination, comparing the information on the free space with the actual free capacity of the information recording medium. The method of claim 23, And the information recording medium is recognized as the original when the information on the blank capacity and the actual blank capacity match in the comparing step. The method of claim 23, And if the information on the free space and the actual free space match, as a result of the comparison, permitting recording or reproduction of the information recording medium. The method of claim 17, And when information is recorded on the information recording medium and the space capacity of the information recording medium changes, updating the information about the space capacity. An information recording apparatus for recording information on an information recording medium, Acquiring means for acquiring information on a blank capacity of the information recording medium; Recording means for recording information on the free capacity on the information recording medium; An information recording apparatus having a. The method of claim 27, The information recording medium has a data area in which user data is recorded, And the recording means records information on the space capacity in the data area. The method of claim 27, And the recording means records information on the free space as a file. The method of claim 29, And said recording means further adds to said file information including the date on which said file was created or updated. The method of claim 30, And the recording means encrypts the information including the date and adds the encrypted information to the file. The method of claim 27, And the recording means encrypts the information on the blank capacity and records the information on the information recording medium. The method of claim 27, And the information recording medium further comprises a read-only area. A processing apparatus for recording or reproducing information on an information recording medium, Judging means for judging whether or not information on the blank capacity of the information recording medium is recorded on the information recording medium; Comparison means for comparing the information on the free space with the actual free capacity of the information recording medium when the information on the free capacity is recorded as a result of the determination; Processing apparatus provided with. The method of claim 34, wherein And the comparing means recognizes the information recording medium as an original when the information about the free space recorded on the information recording medium and the actual free space coincide. The method of claim 34, wherein And a control means for permitting recording or reproducing of the information recording medium when the information on the space capacity and the actual space capacity match as a result of the comparison. The method of claim 36, And updating means for updating the information on the blank capacity when information is recorded on the information recording medium and the blank capacity of the information recording medium changes. A computer readable recording medium having recorded thereon a program for use in an information recording apparatus for recording information on an information recording medium, comprising: A computer-readable recording medium having recorded thereon a program for causing a computer for controlling the information recording apparatus to record information on a blank capacity of an information recording medium on the information recording medium. A computer readable recording medium having recorded thereon a program for use in a processing device for recording or reproducing information on an information recording medium, comprising: Determining whether or not information on a blank capacity of the information recording medium is recorded on the information recording medium; As a result of the determination, when the information on the free space is recorded, a program for causing the computer for control of the processing apparatus to compare the information about the free capacity with the actual free capacity of the information recording medium is recorded. Computer-readable recording medium. The method of claim 39, As a result of the comparison, in the case where the information about the free space and the actual free space coincide, a computer readable program having recorded thereon a program for additionally executing the step of allowing the control computer to record or reproduce the information recording medium. Recording media. The method of claim 40, And a program for causing the control computer to execute the step of updating the information about the free space if information is recorded on the information record medium and the free capacity of the information record medium changes.

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