JP2003162863A - Recording and playback system for removable disks - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a system for preventing illegal copying of a removable disk. SOLUTION: When data is written to a copy-protected CD medium 10 mounted on a first drive 8, a second area is stored in a system area of the CD medium 10 as copy-prohibition setting information.
The write command information of the signal of logical value "0" to the track of the removable disk 11 mounted on the drive 9 of the drive 9 and the designation information of the number of tracks to write the signal of logical value "0" as the copy prohibition set number information This is recorded as dummy data. CD medium 10 with CD medium 10 as copy source
When a copy is performed with the first drive 8 as the copy destination, the second drive 9 writes the logical value to the specified number of tracks of the CD disk 11 based on the dummy data read from the system area of the CD disk 10 by the first drive 8. A signal of "0" is written, and C of the recording data of the copy prohibited CD disk 10 is written.
Copying to the D disk 11 is completely prevented, and illegal copying and copyright infringement can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a removable disk recording / reproducing system for prohibiting illegal copying of recorded data on a removable disk.

[0002]

2. Description of the Related Art As information has become multimedia and broadband, information recorded on removable disks has been actively distributed via a network. Here, the problem of protection of the information recorded on the removable disk arises together with its copyright. For this reason, access control technology has been developed in which information data is encrypted and a password is used when transmitting and receiving information via a network, and this kind of technology is also applied to removable disks. For example, Japanese Unexamined Patent Publication No. 7-23513 discloses a recording medium for determining illegal duplication by providing an unreadable error region in the reading region of the recording medium, and Japanese Unexamined Patent Publication No. 9-274774 discloses a reproducing medium. A determination method is disclosed in which an ID file is recorded in a dedicated area, the ID file is rewritten in the determination of illegal duplication, and when the rewriting operation is normally completed, it is determined that the copy medium is an illegally duplicated copy medium.

[0003]

Recently, CD-R (Co
mpact Disc Recordable), CD
-RW (Compact Disc Rewrite tab)
For example, the system software such as an OS (Operating System) and multimedia contents are pre-recorded in one of the two divided storage areas, and the other storage area is blank and the data is written. Hybrid disc (H
(Yblide Disc) has come to be used as a value-added disc.

This kind of hybrid disc is copied as it is by using a CD recorder or the like, and a clone removable disc (Clone) for the purpose of redistribution.
Removable Disc) can be created even if an access control technique using data encryption or a password is used. As described above, at present, including the method disclosed in the above-mentioned publication, it is impossible to completely prevent the creation of a copy of a clone removable disk for the purpose of redistribution.

The present invention has been made in view of the current state of the copy operation of a removable disk as described above, and an object thereof is to provide a removable disk recording / reproducing system for prohibiting illegal copying of a removable disk. Especially.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 writes data to a removable disk, and the writing means writes data to the removable disk. When data is written, copy prohibition selecting means for selecting copy prohibition of the write data to the copy destination removable disk, and when the copy prohibition selecting means selects copy prohibition, the data by the write means for the removable disk is written. When writing the data, a recording control means is provided for controlling the writing to the writing means in a state in which the data cannot be copied to the copy destination removable disk.

According to such means, recording of data, reproduction of recorded data, and copying of recorded data of the removable disk to the removable disk of the copy destination are performed on the removable disk. When recording the data, the copy prohibition selecting unit selects whether or not the copy of the record data is prohibited, and when the copy prohibition selecting unit selects the copy prohibition, the recording control unit performs the writing operation. The controlled writing means controls the writing of the data written to the removable disk to a state where it cannot be copied to the copy destination removable disk, so that the recorded data of the removable disk is illegally copied to the copy destination removable disk. Is completely prohibited.

[0008] Similarly, in order to achieve the above-mentioned object, the invention according to claim 2 is different from the invention according to claim 1 in that it is provided with a writing means to a removable disk in which copy inhibition is selected by the copy inhibition selecting means. When writing data,
Dummy data adding means for adding dummy data indicating prohibition of copying to the data and writing the data is further provided, and the recording control means is a copy destination removable disk of the data to be written on the removable disk based on the dummy data. The writing control of the writing means is performed in a state in which copying to is impossible.

According to such means, in addition to the invention according to claim 1, dummy data adding means is further provided, and in addition to the operation of the invention according to claim 1, copy prohibition selecting means prohibits copying. At the time of writing the data to the selected removable disk, the dummy data adding unit adds the dummy data indicating the copy prohibition to the data, and the data is written by the recording control unit based on the written dummy data. The writing control of the writing means is performed in a state in which the data to be written to the copy destination removable disk cannot be copied.

[0010] Similarly, in order to achieve the above-mentioned object, the invention according to claim 3 is different from the invention according to claim 2 in that a copy means for copying the record data of the removable disk to the copy destination removable disk, and a copy When copying the recording data of the removable disk whose copy prohibition is selected by the prohibition selecting means to the copy destination removable disk, based on the dummy data additionally recorded to the recording data, the copying means writes the data to the copy destination removable disk. A copy prohibition control means for prohibiting the copy operation of the recording data is further provided.

According to such means, in addition to the invention of claim 2, a copy means and a copy operation prohibition control means are further provided, and in addition to the operation of the invention of claim 2, a copy prohibition selection is made. When copying the recorded data of the removable disk whose copy prohibition is selected by the means to the copy destination removable disk, the copy operation prohibition control means makes the copy destination removable by the copy means based on the dummy data additionally recorded to the recorded data. The operation of copying the recorded data to the disk is prohibited and the illegal copying of the recorded data of the removable disk to the copy destination removable disk is completely prevented.

[0012] Similarly, in order to achieve the above-mentioned object, in the invention according to claim 4, in the invention according to claim 3, the copy prohibition control means stores the copy prohibition setting information of the data from the dummy data to the copy destination removable disk. Detecting the copy prohibition setting frequency information, and prohibiting the copy operation of the data to the copy destination removable disk to the copy means based on the detected copy prohibition setting information and the copy prohibition setting frequency information. It is a feature.

According to such means, the copy prohibition control means detects the copy prohibition setting information and the copy prohibition setting frequency information of the data for the copy destination removable disk from the dummy data, and detects the detected copy prohibition setting information and the copy. The operation of the invention according to claim 3 is executed by controlling the copy means to prohibit the copy operation of the data to the copy destination removable disk based on the prohibition setting frequency information.

Similarly, in order to achieve the above object, the invention of claim 5 is the invention of claim 4, wherein the copy prohibition setting information is a signal of a logical value "0" to the track of the copy destination removable disk. And the copy prohibition set number information is designation information of the number of tracks in which a signal of logical value "0" is written by the write instruction information.

According to such means, the copy prohibition setting information is used as the write command information of the signal of the logical value "0" to the track of the copy destination removable disk, and the copy prohibition setting frequency information is used by the write command information. As the designation information of the number of tracks to which the signal of the logical value "0" is written, the copy means operating by the copy inhibition control means sets the number of tracks designated by the copy inhibition set count information to the copy destination removable disk. , By writing the signal of the logical value “0” related to the designation of the write designation information,
The operation of the invention according to claim 4 is executed.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing the overall configuration of the present embodiment, FIG. 2 is a flow chart showing a data write operation to a removable disk of the present embodiment, and FIG. 3 is a copy operation to a copy destination removable disk of the present embodiment. It is a flowchart showing.

A removable disk recording / reproducing system according to the present embodiment is a CD-R, a CD-RW, or a DV.
D-RAM (Digital Versatile D)
isc Random Access Memor
y), DVD-R (Digital Versatil)
e Disc Recordable), DVD-RW
(Digital Versatile Disc R
Ewritable), MO (Magnet-Opti)
Cal disc) and recording / reproduction on a removable disk such as a removable hard disk, and copying of recorded data to another removable disk.

In the present embodiment, as shown in FIG. 1, a first drive 8 in which a removable disk is mounted and driven via a bus 1 to a CPU 2 which controls the entire operation,
Similarly, a second drive 9 on which a removable disk is mounted and driven, and a hard disk 4 storing a control program are connected. Similarly, the CPU 1 and the bus 1
A display 7 for displaying various data at the time of operation, a main memory 3 for writing and reading various data at the time of operation, a keyboard 5 and a mouse 6 operated by an operator are connected via the.

Then, in the copy prohibit mode, the CPU 2 of the present embodiment controls the writing of data to which dummy data is added when writing the data to the removable disk mounted in the first drive 8. Recording control means,
In the copy prohibition mode, copy prohibition control means for prohibiting the copy of the recorded data of the removable disk mounted in the first drive 8 to the removable disk mounted in the second drive 9 is provided.

The operation of this embodiment having such a configuration will be described below.
This will be described with reference to FIGS. 2 and 3. First, referring to the flowchart of FIG. 2, the data writing operation to the removable disk according to the present embodiment will be described with reference to the case where the removable disk is a CD such as CD-R or CD-RW, and the removable disk will be referred to as a CD medium. This will be described by abbreviation.

In step S1 of the flow chart of FIG. 2, the hard disk 4 is instructed by the CPU 2 based on the operation of the operator's keyboard 5 or mouse 6.
The CD media writer software is started up, the process proceeds to step S2, the CD medium 10 is loaded into the first drive 8, and the CD medium 10 is recorded on the CD medium 10 by operating the keyboard 5 or the mouse 6 in step S3. Whether or not the prohibition setting for copying the write data to another CD medium is selected is performed. In this case, when the copy prohibition setting is selected for the CD medium 10 in step S3, the process proceeds to step S4, and the command box of the CPU 2 opens the option box of the writer software of the hard disk 4 to check the copy prohibition tag. The option box will be closed later.

Next, in step S5, the operator operates the keyboard 5 or the mouse 6 to operate the user interface (UI; User Inte).
The write data to be written into the CD medium 10 is selected by rface), and the process proceeds to step S6, where the writing of the selected write data to the CD medium 10 is started by the user interface. At the time of this writing, the CD is instructed by the CPU 2 in step S7.
It is determined whether or not the copy prohibition is set on the medium 10. If it is determined that the copy prohibition is set, the process proceeds to step S8, and the write read from the hard disk 4 is instructed by the CPU 2. CD media 1 by the first drive 8 according to the embedded format
Data is written to the 0 track and the CD
Dummy data is recorded in the system area of the medium 10.

In this case, the dummy data recorded in the system area of the CD medium 10 is composed of copy prohibition setting information and copy prohibition setting frequency information, and the copy prohibition setting information is a logical value to the track of the copy destination removable disk. It is the write command information of the signal of "0", and the copy prohibition setting frequency information is the designation information of the number of tracks of the copy destination removable disk in which the signal of the logical value "0" is written by the write command information. .

On the other hand, if it is determined in step S7 that the copy prohibition is not set in the CD medium 10, the process proceeds to step S9, and the CD medium 10 is instructed by the first drive 8 in the hard disk by the instruction of the CPU 2. According to the write format read from No. 4, only writing of data to the track is performed.

Next, referring to the flowchart of FIG.
The copy operation for the copy destination removable disk according to the present embodiment will be described. In step S11 of the flowchart of FIG. 3, the writer software for the CD medium of the hard disk 4 is activated by a command of the CPU 2 based on the operation of the keyboard 5 or mouse 6 by the operator, and the copy source CD medium 10 is changed in step S12. Mounted on the first drive 8, step S1
At 3, the copy destination CD medium 11 is loaded into the second drive 9.

Next, in step S14, the operator operates the keyboard 5 or the mouse 6 to operate the CD medium 1 through the user interface.
Writing to 1 is started, and the process proceeds to step S15, where CP
The U2 command drives the first drive 8 to read the system area of the copy source CD medium 10. Then, the process proceeds to step S16, and it is determined whether the CD medium 10 can be copied or not based on whether or not the dummy data is read from the system area of the CD medium 10 in step S15 by the instruction of the CPU 2.

If it is determined in step S16 that copy prohibition is set for the CD medium 10, step S16
Proceeding to 17, the operator operates the keyboard 5 or the mouse 6 to open an input box for the number of times the copy prohibition setting frequency information is added to the copy destination CD medium 11 in response to a command from the CPU 2. Then, step S19
Then, the operator operates the keyboard 5 or the mouse 6 to input the number of times of addition designated by the copy prohibition setting frequency information of the dummy data, and then the input box is closed. Then, proceed to step S20,
The second drive 9 is driven by a command from the CPU 2, and a signal of logical value “0” designated by the copy inhibition setting information is output to the number of tracks designated by the copy inhibition setting number information of the copy destination CD disk 11. Each is written.

On the other hand, when it is determined in step S16 that the copy source CD medium 10 can be copied, the process proceeds to step S18, and the recording data of the copy source CD medium 10 is copied to the copy destination CD by the instruction of the CPU 2. The CD medium 11 is written and copied.

As described above, according to the present embodiment, when the CD medium 10 for which copying is prohibited is set in the first drive 8 and data is written, the CD medium 10 is written. The system area 10 includes copy prohibition setting information and copy prohibition setting frequency information, and the copy prohibition setting information is write command information of a signal having a logical value "0" to the track of the copy destination removable disk Dummy data is recorded as the set number of times information, which is the designation information of the number of tracks of the copy destination removable disk in which the signal of the logical value "0" is written by the write command information.

For this reason, if the CD medium 10 for which copying is prohibited is used as the copy source and copying is attempted on the copy destination CD medium 11 mounted in the second drive 9, the CD is copied by the first drive 8. Based on the dummy data read from the system area of the disc 10, the second drive 9 writes a signal of the logical value “0” on the designated number of tracks of the CD disc 11. It is possible to completely prevent the recording data of the CD disc 10 whose copying is prohibited from being copied to the CD disc 11, and prevent illegal copying of the CD disc 10 to prevent infringement of copyright.

[0031]

According to the removable disk recording / playback system of the first aspect of the present invention, data is recorded on the removable disk, the recorded data is played back, and the recorded data on the removable disk is copied to the removable disk. Copying to a removable disk is done,
When recording data on the removable disk, the copy prohibition selecting unit selects whether or not to prohibit copying of the recorded data. When the copy prohibition selecting unit selects copy prohibition, the writing unit removes the data. The data recorded on the disc is written to the copy destination removable disk under the control of the recording control means, so it is illegal to copy the recorded data on the removable disk to the copy destination removable disk. It becomes possible to ban it completely.

According to the second aspect of the present invention, in addition to the first aspect of the invention, dummy data adding means is further provided, and the writing of data to the removable disk in which copy prohibition is selected by the copy prohibition selecting means. At this time, the dummy data addition means writes dummy data indicating the copy prohibition to the data, and the recording control means writes the dummy data to the removable disk to which the data is written on the removable disk based on the written dummy data. By effecting the writing control of the writing means in a state where the copying is impossible, it is possible to realize the effect obtained by the invention of claim 1.

According to the third aspect of the present invention, the removable disk recording / reproducing system according to the second aspect is further provided with a copy means and a copy operation prohibition control means, and the copy prohibition selection means prohibits copying. When copying the recorded data of the selected removable disk to the copy destination removable disk, the copy operation prohibition control means records the recorded data to the copy destination removable disk by the copy means based on the dummy data additionally recorded to the recorded data. Copy control is prohibited. Therefore, it becomes possible to completely prohibit illegal copying of the recorded data of the removable disk to the copy destination removable disk.

According to the invention described in claim 4, the copy prohibition control means detects the copy prohibition setting information and the copy prohibition setting frequency information of the data for the copy destination removable disk from the dummy data, and detects the detected copy prohibition setting information. The effect obtained by the invention according to claim 3 can be realized by prohibiting the copy operation of the data to the copy destination removable disk on the basis of the copy prohibition setting frequency information. Become.

According to the invention of claim 5, the copy prohibition setting information is used as the write command information of the signal of the logical value "0" to the track of the copy destination removable disk, and the copy prohibition setting number information is the write command. As the designation information of the number of tracks in which the signal of the logical value "0" is written by the information, the copy means operating by the copy inhibition control means sets the number of tracks designated by the copy inhibition set count information to the copy destination removable disk. By writing the signal of the logical value “0” related to the designation of the write designation information on the track, it is possible to realize the effect obtained by the invention of claim 4.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a data write operation to a removable disk according to the same embodiment.

FIG. 3 is a flowchart showing a copy operation for a copy destination removable disk of the embodiment.

[Explanation of symbols]

1 bus 2 CPU 3 main memory 4 hard disk 8 first drive 9 Second drive 10, 11 removable disk

Claims (5)

[Claims] 1. A writing means for writing data to a removable disk, and when writing the data to the removable disk by the writing means, a prohibition of copying of the write data to a copy destination removable disk is selected. And a copy prohibition selecting unit that selects copy prohibition, when writing the data to the removable disk by the writing unit, the copy of the data to the copy destination removable disk is disabled. A recording / reproducing system for a removable disk, comprising: recording control means for controlling writing to the writing means. 2. The removable disk recording / reproducing system according to claim 1, wherein when the data is written by the writing means to the removable disk for which the copy inhibition is selected by the copy inhibition selecting means, the copy inhibition is indicated. Dummy data adding means for adding dummy data to the data to write the data is further provided, and the recording control means copies the data written in the removable disk to the copy destination removable disk based on the dummy data. A recording / reproducing system for a removable disk, characterized in that write control to the writing means is performed in a disabled state. 3. The removable disk recording / reproducing system according to claim 2, wherein copy means for copying the record data of the removable disk to the copy destination removable disk and copy prohibition are selected by the copy prohibition selecting means. A copy for prohibiting the copy operation of the recording data to the copy destination removable disk by the copying means based on the dummy data additionally recorded to the recording data when the recording data of the removable disk is copied to the copy destination removable disk. A recording / reproducing system for a removable disk, further comprising prohibition control means. 4. The removable disk recording / reproducing system according to claim 3, wherein the copy prohibition control means detects the copy prohibition setting information and the copy prohibition setting frequency information of the data with respect to the copy destination removable disk from the dummy data. A recording / reproducing of a removable disk, which prohibits the copying operation of the data to the copy destination removable disk to the copy means based on the detected copy prohibition setting information and the copy prohibition setting frequency information. system. 5. The removable disk recording / reproducing system according to claim 4, wherein the copy prohibition setting information is write command information of a signal of a logical value “0” to a track of the copy destination removable disk, and copy prohibition is performed. A recording / reproducing system for a removable disk, wherein the set number of times information is designation information of the number of tracks in which a signal of a logical value "0" is written by the write command information.