WO2005027119A1

WO2005027119A1 - Information recording device and recording medium, and reproducing program

Info

Publication number: WO2005027119A1
Application number: PCT/JP2004/013495
Authority: WO
Inventors: Yutaka Ueda
Original assignee: Konica Minolta Photo Imaging, Inc.
Priority date: 2003-09-12
Filing date: 2004-09-09
Publication date: 2005-03-24

Abstract

An information recording device scrambles a received file into a form reproducible only by a particular program and records the file on a recording medium on which identification information, for identifying the recording medium is recorded in an area (an area outside the logical address area) not accessible by the OS of a personal computer; records a scrambled file on a recording medium and, at the same time, generates identification information and records the identification information in an area outside the logical address area; records a scrambled file and dummy data in a format unidentifiable by the OS of a personal computer on a recording medium; or generates a scrambled file and dummy data as well as identification information and records the identification information in an area outside the logical address area.

Description

Description Armor report recorder and recording medium as well as reproduction

The present invention relates to an information recording device for recording a file, a recording medium created by the information recording device, and a reproducing program for reproducing a file / file recorded on the recording medium. Background art

In recent years, various services related to photography have been provided. For example, a user takes a photo with a digital camera, takes a digital camera that has recorded the image file of the photo, and brings the media for digital camera to a photo shop such as Murabo, where an unattended terminal (kiosk) or a store Using a terminal or the like, an image file recorded on the digital camera media can be written on a recording medium such as a CD-R or a DVD-R (see, for example, Japanese Patent Application Laid-Open No. 5-182733). Gazette).

When a user takes a picture with a film camera and brings the film into a photo shop such as a minilab, the photo shop develops the film, reads the image file using a reading device such as a scanner, and reads the CD. -R, DVD-There are also services that write to recording media such as R and provide them to users.

In addition, image files read from digital cameras, media, and film are converted into file formats so that they can be played on image playback devices such as DVD players and DVD recorders. And the converted image file Services for writing to recording media such as CD-R and DVD-R are also available.

Then, the user inserts the recording medium in which the image file is written into the personal computer, and performs display, editing, image processing, and the like of the image file using an application such as a slide show program installed on the personal computer, and records. The image file can be used by displaying the image file by inserting the medium into the image reproducing device. In addition, the recording medium is used not only by the user who provides the image file, but also by presenting it to an acquaintance or the like who wants to show the image file.

Many personal computers in recent years can write data on recording media such as CD-R and DVD-R, and use this writing function to copy the recording media created by the above-mentioned service to present them to acquaintances and others. It is also possible. However, if such illegal copying is allowed, it will hinder the promotion of the use of the above services and will impair the service provider's profits. The proposal of is desired. Disclosure of the invention

The present invention has been made in view of the above problems, and a main object of the present invention is to provide an information recording apparatus and a recording method capable of reliably preventing an illegal copy of a recording medium on which a file is recorded. It is to provide a medium and a reproduction program.

In order to achieve the above object, an information recording apparatus of the present invention comprises a means for inputting a file, a means for converting the input file into a form that can be reproduced by a specific program, and at least the converted file. Is written into the logical address area of the recording medium in which the identification information referred to by the specific program is recorded outside the logical address area in advance. Means at least.

Further, the information recording apparatus of the present invention can include means for generating identification information of a recording medium referred to by a specific program, means for inputting a file, and reproduction of the input file by the specific program. Means for writing the converted file into a logical address area of the recording medium and writing the identification information outside the logical address area.

Further, the information recording apparatus of the present invention comprises: means for generating identification information of a recording medium, which is referred to by a specific program; Means for storing data; means for inputting a file; means for converting the input file into a form that can be reproduced by the specific program; and at least converting the converted file and the dummy data. Means for writing in the logical address area of the recording medium and for writing the identification information outside the logical address area.

In the present invention, the identification information may be data in a form that the OS of a computer using the recording medium cannot recognize.

Further, the information recording apparatus of the present invention includes a means for storing dummy data in a form in which an OS of a computer into which a recording medium is inserted cannot be recognized, a means for inputting a file, and a method for inputting the file to the specified file. Means for converting the file and the dummy data into a form which can be reproduced by a program; and means for writing the converted file and the dummy data into a logical address area of the recording medium.

Further, in the recording medium of the present invention, identification information referred to by a specific program is recorded outside the logical address area in advance.

Further, the recording medium of the present invention is at least in a form that can be reproduced by a specific program. The converted file is recorded in a logical address area, and identification information referred to by the specific program is recorded outside the logical address area.

Further, in the recording medium of the present invention, at least a file converted into a form that can be reproduced by a specific program and dummy data in a form that cannot be recognized by an OS of a computer into which the recording medium is inserted are recorded in a logical address area. In addition, the identification information referred to by the specific program is recorded outside the logical address area. Further, in the recording medium of the present invention, at least a file converted into a form reproducible by a specific program and dummy data in a form unrecognizable by an OS of a computer into which the recording medium is inserted are recorded in a logical address area. Is what is being done.

Further, the reproduction program of the present invention is a computer readable medium for extracting identification information of a recording medium from outside a logical address area of a recording medium with reference to pre-recorded position information, wherein the identification information is recorded. In such a case, the file which has been converted into a predetermined format recorded in the logical address area of the recording medium is restored to an original image file.

In addition, the reproduction program of the present invention includes a computer that reads the dummy data in a form in which the OS of the computer cannot be recognized from the logical address area of the recording medium, and refers to the previously recorded position information, Means for extracting the identification information of the recording medium from outside the logical address area of the recording medium, and converting the dummy data and the identification information into a predetermined form recorded in the logical address area of the recording medium when the dummy data and the identification information are recorded. The function to restore the original file to the original image file. Further, the reproducing program of the present invention is a program for reading a form of dummy data from a computer in which the OS of the computer cannot be recognized from a logical address area of a recording medium. Record in the logical address area of the recording medium The function of restoring the converted file in the predetermined format to the original file is provided.

As described above, in the information recording apparatus of the present invention, the scramble processing is performed so that the input file can be reproduced only by the specific program, and the identification information for identifying the recording medium in advance cannot be accessed by the personal computer 〇S. Recording on a recording medium recorded in an area (outside the logical address area), or recording a scrambled file on the recording medium, generating identification information, and placing the identification information outside the logical address area. Record or record a file that has been scrambled and dummy data in a format that cannot be recognized by the PC's OS (for example, data in which address information is not described in the lead-in TOC (Table Of Contents)). In addition to files and dummy data recorded on a medium or subjected to a scramble process, identification information is generated and the identification information is generated. Recorded outside the logic Adoresu region. As a result, even if the user copies the recording medium created by the information recording device using a personal computer, the identification information recorded outside the logical address area cannot be copied, and the dummy data is also read-in. · Since address information is not described in the TOC, copying cannot be performed, and identification information or dummy data will not be recorded on the illegally copied recording medium.

A reproducing program for reproducing a recording medium installed in a personal computer or the like, extracts identification information from the recording medium with reference to the position information stored in the position information storage means, and records the identification information. Only when the identification information is valid or when the scrambled file is restored, or when the dummy data recorded in the logical address area in a format that the PC OS cannot recognize is recognized, the dummy data The file is restored only when is recorded (or when the identification information is completely recorded or the identification information is valid). In this way, illegally copied notes Since no identification information or dummy data is recorded on the recording medium and the scrambled file cannot be reproduced by the reproduction program, it is possible to reliably prevent unauthorized copying.

That is, according to the information recording apparatus, the recording medium, and the reproduction program of the present invention, unauthorized copying of the recording medium can be reliably prevented.

The reason is that the information recording device does not simply record the file provided by the user on a recording medium such as a CDR, but scrambles the file and records it on the recording medium, and also identifies the recording medium. Write the unique media information outside the logical address area that cannot be accessed by the OS of the computer, or record the dummy data formed in a format that cannot be recognized by the OS of the personal computer (for example, data in which address information is not described in the lead-in TOC). This is because it is written on the medium. As a result, even if the recording medium is copied using general writing software, the unique media information or / and dummy data cannot be copied, and the playback program has the unique media information or Z and dummy data recorded. This is because a file on a recording medium that has not been restored cannot be restored, so that unauthorized copying of the recording medium can be reliably prevented. Brief Description of Drawings

FIG. 1 is an external view showing a configuration of an information recording apparatus according to a first embodiment of the present invention. FIG. 2 is a block diagram showing functions of the information recording apparatus according to the first embodiment of the present invention.

FIG. 3 is a slow chart showing a procedure for creating an information recording medium using the information recording apparatus according to the first embodiment of the present invention. W 200

FIG. 4 is a diagram showing an information recording area of the information recording medium according to the first embodiment of the present invention.

FIG. 5 is an external view showing another configuration of the information recording apparatus according to the first embodiment of the present invention.

FIG. 6 is an external view showing another configuration of the information recording apparatus according to the first embodiment of the present invention.

FIG. 7 is a block diagram showing means for causing a computer to function with the reproduction program according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing a procedure for reproducing an image file using the reproduction program according to the first embodiment of the present invention.

FIG. 9 is a slow chart showing a procedure for creating an information recording medium using the information recording apparatus according to the second embodiment of the present invention.

FIG. 10 is a diagram showing an information recording area of an information recording medium according to a second embodiment of the present invention.

FIG. 11 is a block diagram showing a means by which a reproduction program according to a second embodiment of the present invention causes a computer to function.

FIG. 12 is a flowchart showing a procedure for reproducing an image file using a reproduction program according to the second embodiment of the present invention.

FIG. 13 is a cross-sectional view showing the structure of a recording medium (CDR). BEST MODE FOR CARRYING OUT THE INVENTION

An information recording apparatus according to the present invention, in a preferred embodiment, includes a unique media information generating means for generating unique media information, and File conversion means for performing file processing, and file recording means for writing the scrambled file into the logical address area of the recording medium and writing the unique media information generated by the unique media information generating means outside the logical address area. At least a recording medium created by the information recording apparatus has a unique address used in a playback program for playing back a scrambled file in which a scrambled file is recorded in a logical address area and a scrambled file is recorded outside the logical address area. Information is written. Therefore, unique media information cannot be copied even if the recording medium is copied without using a dedicated writing device. On the other hand, the reproduction program is a computer that, at least, refers to means for extracting the unique media information from the recording medium with reference to the pre-recorded position information, and a scrambled process recorded on the recording medium with reference to the unique media information. In order to function as a means of restoring a file that has been restored to its original file, files on a recording medium on which unique media information is not recorded cannot be played back. By using such a method, unauthorized copying of the recording medium can be prevented. (Example 1)

In order to explain the above embodiment in detail, an information recording device, a recording medium, and a reproduction program according to a first example of the present invention will be described with reference to FIGS. The logical address area in the present specification and claims is an area in which user data (program) is recorded, a program memory area in which user data arrangement information is recorded, a lead-in TOC area, and a read address. Information area such as area, application code of disk, recommended value of laser recording power, and guide groove modulation (ATIP: Absolute Time In Pre-groove) information area in which other information is recorded are not included, and logical address is not included. The outside of the area indicates an area other than the logical address area. First, an information recording apparatus according to a first embodiment of the present invention will be described with reference to FIG. The information recording device 1 of the present embodiment is a recording medium for a digital camera or a mobile phone with a camera such as a smart media, a compact flash (registered trademark), a memory stick (registered trademark), an SD memory card, and a multimedia card. The media loading unit 2 for loading the media 8), digital cameras 7, and mobile phones with cameras 7a, etc. (hereinafter referred to as the digital camera 7) can be wired, wireless, infrared, etc. File connection means, such as a network connection unit that downloads files from the server 23 via the communication network 22 such as the Internet, and media 8 and the digital camera 7. Still image files, video files, music sounds read or downloaded from server 23 For recording files, content files, application files, etc. (hereinafter simply referred to as files). For loading recording media 9 such as CD-R and DVD-R. Recording medium loading section 4, buttons, keyboard, mouse, etc. Operating unit 6 and a display unit 5 such as an LCD and a CRT (in the figure, a touch panel having both the operating unit 6 and the display unit 5 is shown).

FIG. 2 is a block diagram showing the functions of the information recording device 1. That is, a file input unit 10 for inputting a file (for example, a still image file or a music sound file that can be reproduced on a personal computer) using the media loading unit 2, the device connection unit 3, the network connection unit, and the like; An information input unit 11 such as a display unit 5 or an operation unit 6, and a unique media information generating unit that identifies the recording medium 9 and generates information (hereinafter, referred to as unique media information) used in a playback program described later. 12 and, if necessary, converting the input file (for example, a still image file) to a file (for example, a video file) that can be played on an image playback device such as a DVD player or DVD recorder. Then, the input file is transferred by a file converting means 13 for performing scrambling processing on the file converted for the image reproducing apparatus, a file transferring means 14 for controlling a file recording order, and a file transferring means 14. File recording means 15 for writing the file to a predetermined area of the recording medium 9 loaded in the recording medium loading section 4 and storage means 16 for temporarily storing a file to be written in the file recording means 15. Have. Here, the file transfer means 14 and the file recording means 15 for ease of explanation are separately provided for convenience, but they may be configured as a single means. Further, in FIG. 1, the recording medium loading section 4 is used as a means for recording a file on the recording medium 9, but a recording medium in which a file such as content is recorded in advance is loaded, and the file is loaded from the recording medium. It may be used as input means. FIG. 1 shows a kiosk-type information recording device 1 that can be installed in a store such as a photo shop or a convenience store, and the form of the force information recording device 1 is arbitrary.For example, as shown in FIG. As shown in FIG. 6, a dedicated set-top box, a portable writer as shown in FIG. 6, or a DVD recorder may be used.

A procedure until a file is recorded on the recording medium 9 using the information recording device 1 having the above configuration will be described with reference to a flowchart of FIG. In the following, the force S for recording two types of files on the recording medium 9 so that the read file can be viewed on both the computer and the image playback device is recorded, and a file that can be played back on only one device is recorded. The same applies to the case of recording on the medium 9. First, in step S101, the medium 8 is loaded into the media loading section 2 of the information recording apparatus 1, or the digital camera 7 is connected to the device connection section 3, or the network connection section is connected to the communication network 22. The recording medium 9 is loaded in the recording medium loading section 4. Next, in step S102, the unique media information generating means 12 writes the information on the recording medium 9. It generates identification information (hereinafter, referred to as unique media information) for identifying the recording medium 9 that is used for reproducing the recorded file by the above-described reproduction program. The content of the unique media information is not limited, and may be a code corresponding to the manufacturer of the recording medium 9 (manufacturer code) or a code corresponding to the standard of the recording medium 9 (type code). In addition, a unique configuration can be adopted so that unique media information is not duplicated in a plurality of recording media 9. Also, the unique media information only needs to be recorded in a format that can be recognized by the playback program, and is preferably recorded as a file format data so that the OS of the personal computer cannot be recognized.

Next, in step S103, the file was recorded on the file server 23 stored in a predetermined area of the digital camera 7 or the media 8 by using the file input means 10 (here, the digital camera 7). And still image files (recorded on media 8).

Next, if necessary, in step S104, the still image file read using the file conversion means 13 is converted to a file of another file format (here, a DVD player, a DVD recorder, or the like). Convert to video files such as MPEG1 and MPEG2 that can be read by devices, V-CD format files, and DVD-Video format files. The method for creating a moving image file from a still image file is not particularly limited.For example, when a still image file is displayed like a slide show, data of a difference 0 for a slide display time is added to the still image file. A moving image file can be generated by culling, or a moving image file can be generated by adding difference data based on a slide effect set by a slide show program to a still image file. Note that this step is unnecessary if a surface image file for an image reproducing device is not created. Next, in step S105, all or a part of the original file or the file converted for the image reproducing device is subjected to scramble processing. Here, the scrambling process refers to converting a file so that it cannot be reproduced without using a dedicated application (a reproduction program described later). For example, the data arrangement of the file is changed or the file is changed. Means general processing such as splitting a file or converting it to a file with a special extension. In some cases, all files recorded on the recording medium 9 are not scrambled. When copying the recording medium 9 using a personal computer, it is difficult to copy one of Video-CD format data and DVD-Video format data. This is because it may not be necessary to perform scrambling because the copy cannot be copied.

Next, in step S106, the unique media information is recorded on the recording medium 9. Since this unique media information is provided to prevent unauthorized copying of the file, if the recording location and contents are easily known, the unique media information itself is also copied, and illegal copying is not performed. At least part of the unique media information cannot be controlled by the computer's OS because it cannot be prevented, specifically the information in the program memory area, and the proposal given at the time of CD-R molding. It is preferable to use information based on inner groove modulation (ATIP).

Here, the structure of a general recording medium 9 will be described with reference to FIG. 13. CD-R is an organic dye layer such as cyanine, phthalocyanine, and azo on a polycarbonate substrate 100. It is formed by laminating 101, a reflective layer 102 of silver or the like, and an overcoat layer 103, and irradiates a laser beam of a predetermined power to the organic dye layer 101 to decompose the dye to form a substrate. The pits 104 are formed by deformation, and information is recorded. Power The laser power is an optimal value according to the type of laser head that irradiates laser light and the type of organic dye layer 101 used. To ensure that information is written The drive must recognize the type of CD-R and the recommended value of the laser recording power. Therefore, information such as a recommended value of a laser application code of a disk is written as information by guide groove modulation (AT IP) in a manufacturing process of a recording medium, and the information is read by a drive firmware, and the firmware reads the information. It independently controls the laser head to adjust the laser power. Since such guide groove modulation (AT IP) can only be created at the time of manufacture, copying at the user level can be prevented. In addition, the guide groove modulation (AT IP) other than the above can be used as unique media information by appropriately setting the lead-in start time, the maximum lead-out start possible time, and the like. It can be easily and reliably identified whether or not it was created.

Next, when a file for an image reproducing device is created, in step S107, the file transfer unit 14 uses the file association file or the like scrambled by the file conversion unit 13 (hereinafter, these are collectively referred to as “file association file”). ) Is transferred to a predetermined folder for writing provided in the storage means 16 in advance. Then, the file recording means 15 reads out the image reproduction device file group from the folder and records it in the logical address area of the recording medium 9. Here, a video-CD recording medium 9 can be created by recording on a CD-R using MPEG1 or MPEG2 as the image format of the moving image file, and using MPEG2 as the image format of the moving image file. By recording on DVD-R, a recording medium 9 in DVD-Video format can be created.

Next, in step S108, if necessary, the file recording unit 15 temporarily closes the session to divide the file area usable by the image reproducing device before recording the file for the personal computer. . Next, in step S109, the file transfer means 14 converts the file scrambled by the file conversion means 13, an application for displaying a still image file by slide display, a slide show setting file, etc. , Are collectively referred to as a personal computer file group.) Are transferred to a predetermined writing folder provided in the storage means 16 in advance. Then, the file recording means 15 reads the file group for personal computers from the folder, records the file group outside the file group for the image reproducing device previously recorded on the recording medium 9, and ends a series of writing processes.

Various kinds of information are recorded on the recording medium 9 created in the above procedure as shown in FIG. 4, and outside the innermost logical address area of the disk type recording medium 9, a predetermined format (preferably a file format) is used. Media data in a non-data format, and inside the logical address area outside the media area, there are files for image playback devices (Video—CD format data and DVD—Video) including scrambled files. In the case of the format data, scramble processing is not required.) Is recorded, and on the outer side, a group of personal computer files including scrambled files is recorded. In the above procedure, the information recording apparatus 1 is configured to write the unique media information on the recording medium 9. The recording medium 9 in which the unique media information is previously written on the recording medium 9 is provided to the user. You can also. For example, the area in which the unique media information is written is an area in which information for specifying the dye type / measurement is recorded in the manufacturing stage of the recording medium 9 in advance. Media information can also be written. In this method, since the unique media information is recorded by the press, the reliability of the recording can be improved, and the information recording device 1 does not need to include the unique media information generating means 12. Since it is not necessary to write the unique media information in step S106 in the figure, the information recording device 1 Can be simplified and the recording procedure can be simplified. Further, the unique media information is generated using the unique media information generating means 12 immediately after the recording medium 9 is loaded. For example, the unique media information may be generated after performing a file conversion / scramble process. In the above procedure, the writing order is controlled by the file transfer means 14 so that both the personal computer and the image reproducing device can read the file. However, if the writing order does not matter, either file may be written first.

As described above, in the information recording apparatus 1 of the present embodiment, the file read from the digital camera 7 or the medium 8 is not written to the recording medium 9 as it is, but unique unique media information is generated for each recording medium 9. Write outside the logical address area that cannot be accessed by the OS of the personal computer, and write the original file or the file converted for the image playback device so that it can be restored and played back only by the dedicated playback program by performing scramble processing. Thus, even if the user copies the recording medium 9, the unique media information cannot be copied, and the scrambled file cannot be restored, so that unauthorized copying can be reliably prevented.

Next, a procedure for reproducing a file with a bass computer using the recording medium 9 created by the information recording device 1 will be described with reference to the flowchart of FIG.

First, in step S201, the user installs the playback program provided by the service provider on a personal computer. As shown in FIG. 7, this playback program stores the computer with position information storage means 17 for storing information indicating the recording position of the unique media information, and a unique medium for extracting the unique media information by referring to the position information. Information extracting means 18, file restoring means 19 for restoring a scrambled file, and file reproducing means 20 for reproducing the restored file are functioned. The method of providing the playback program is not limited. Service provider or via a communication network such as the Internet.

Next, in step S202, after inserting the recording medium 9 into the slot of the personal computer, the reproducing program installed in the personal computer is started in step S203, and in step S204, the unique media is read. The information extracting means 18 acquires the position information (for example, a physical address) stored in the position information storing means 17. Then, in step S205, the unique media information recorded at the position is extracted with reference to the obtained position information. As described above, since this unique media information is recorded outside the logical address area, it cannot be accessed by the OS of the personal computer, and can be extracted only by the unique media information extracting means 18 that has acquired the position information. It has become. The unique media information need not be recorded as continuous data, but may be recorded as discrete data. In such a case, the unique media information is obtained by combining data at a plurality of positions specified by the position information. Get media information.

Then, in step S206, if the unique media information is recorded on the recording medium 9, or if the recorded unique media information is valid, it is determined that the recording medium 9 is a properly created recording medium 9. Then, a process of restoring the file scrambled in step S207 to the original file is performed. The method of restoring the scrambled file is not particularly limited.For example, if encryption is performed according to a predetermined rule, decryption is performed according to the rule, and if the file is divided, the divided file is decrypted. Join. When restoring a scrambled file, the above-described unique media information may be used. For example, key information for decryption is recorded in the unique media information, and encryption is performed using this key information. The decrypted file may be decrypted. After that, the file reproducing means 20 displays the restored file on a monitor of a personal computer or the like. The scrambled file may be restored each time the file is played back, or the files recorded on the recording medium 9 may be restored in a lump and temporarily stored in the personal computer's temporary storage means (for example, storage means). 16), and the file instructed to be reproduced may be read from the temporary storage means and displayed. In a configuration that restores a scrambled file after playing the file, there is a problem that it takes time to display the file.Since the restored file is not stored in the PC, the restored file cannot be restored. The problem of unauthorized copying can be avoided.

As described above, the reproduction program of the present embodiment is written outside the logical address area of the recording medium 9 with reference to the position information stored in the position information storage means 17 (preferably as data not in a file format). The unique media information is extracted, and if the unique media information is written on the recording medium 9 or the unique media information is valid, the scrambled file is restored using the file restoring means 19. You. Therefore, since the unique media information is not written on the recording medium 9 copied illegally and the scrambled file cannot be restored, the illegal copying of the recording medium 9 can be reliably prevented. .

In the above description, the playback program is provided to the user in advance, but the playback program is recorded on the recording medium 9 in which the file is written, and the user first uses the recording medium 9 to execute the playback program. It is also possible to install it on a personal computer and then play back the file. In that case, the playback program itself is written without scrambling, and when the recording medium 9 is inserted into the personal computer, a screen for automatically executing the installation of the playback program can be displayed. Monkey.

(Example 2)

Next, an information recording device, a recording medium, and a reproducing program according to a second embodiment of the present invention will be described with reference to FIGS. 9 to 12.

In the first embodiment described above, unauthorized copy is prevented by recording the unique media information outside the logical address area that cannot be accessed by the personal computer, but instead of the unique media information or In addition to the unique media information, in the logical address area where the files for the personal computer and the files for the image playback device are recorded, dummy data in a format that cannot be recognized by the personal computer OS, that is, the personal computer OS is recorded on the recording medium 9. In the lead-in that is referred to when recognizing data that has been recorded, data without address information is recorded in T〇C, and if there is no dummy data in the logical address area of the recording medium 9, the file will not be restored. It is also possible to adopt a configuration in which control is performed at a time. In the case of this configuration, the storage means 16 of the information recording device 1 stores dummy data in a format in which the OS of the personal computer cannot be recognized (the content can be arbitrarily set because it is dummy data). Even if the recording medium 9 is illegally copied, the address information of the dummy data is not described in the lead-in TOC, and the dummy data is not copied because the OS of the personal computer cannot recognize the dummy data. When a file is recorded on the recording medium 9 using the information recording device 1 having the above configuration, processing is performed according to the flowchart of FIG. Specifically, loading the media 8, connecting the digital camera 7, loading the recording medium 9 (step S301), generating unique media information (step S302), reading the file (step S3) 0 3), file format conversion (step S 304), file scrambling (step S 300), and in step S.306, the generated unique The media information is written out of the logical address area, and then, in step S307, the dummy data stored in the storage means 16 is written in the logical address area, and then the recording of the image reproduction device file group ( Step S 308), session closing (step S 309), and recording of a file group for a non-computer (step S 310) are performed. Note that, similarly to the first embodiment, it is not always necessary to create a file for an image reproducing device. When writing dummy data, it is preferable that address information is not written in the lead-in TOC so that the OS of the personal computer cannot recognize the dummy data, and this dummy data is placed on a separate track from other data. As a configuration for writing. The writing of the dummy data is not limited to the steps shown in the figure. For example, the writing of the dummy data may be performed before the writing of the unique media information or may be performed after the recording of the personal computer file group. Further, instead of the configuration in which the information recording device 1 writes the dummy data, a recording medium 9 in which the dummy data is recorded in advance can be used. Various kinds of information are recorded on the recording medium thus created as shown in FIG. 10, and specific media information is recorded outside the innermost logical address area of the disk-type recording medium 9 as necessary. In the outer logical address area, a file group for image playback devices including scrambled files (VIDEO-CD format data or DVD-VIDEO format data is not scrambled. ) Is recorded, and a PC file group including a scrambled file is recorded on the outside thereof, and dummy data is recorded at an arbitrary position in the logical address area.

When a file is reproduced by a personal computer using the recording medium 9 created by the information recording device 1, the process is performed according to the flowchart of FIG. Specifically, in step S401, as shown in FIG. Information storage means 17 for storing information indicating the recording position of the unique media information, unique media information extracting means 18 for extracting the unique media information by referring to the location information, and restoring the scrambled file In addition to the file restoring means 19 and the file reproducing means 20 for reproducing the restored file, a reproducing program which functions as a dummy data recognizing means 21 for recognizing dummy data is installed in a personal computer. The dummy data recognizing means 21 recognizes, for example, all data recorded in the logical address area of the recording medium 9 and is identified from the data by the address information described in the lead-in TOC. Recognize dummy data by extracting data excluding data or extracting data that does not match the capacity described in the lead-in TOC.

Next, in step S402, after inserting the recording medium 9 into the slot of the personal computer, in step S403, the dummy data recognizing means 21 reads the dummy data recorded in the logical address area of the recording medium 9. When the data is recognized and the dummy data is recorded in step S404, as in the first embodiment, in step S405, the unique media information extraction means 18 stores the position information The position information (for example, physical address) stored in the means 17 is acquired, and in step S406, the unique media information recorded in the position is extracted by referring to the acquired position information. I do. Then, in step S407, if the unique media information is recorded on the recording medium 9, or if the recorded unique media information is valid, the recording medium 9 that has been properly created is used. When it is determined that there is a file, the file subjected to the scramble process is restored in step S408, and in step S409, the file reproducing means 20 displays the restored file on a monitor of a personal computer. Here, it is assumed that the dummy data is recorded on the recording medium 9 and the file is restored when more effective unique media information is recorded. The configuration may be such that the file is restored when data is recorded, in which case steps S405 to S407 can be omitted.

As described above, in the present embodiment, instead of the configuration for writing the unique media information outside the logical address area, or in addition to the writing of the unique media information, the dummy data in a format that cannot be recognized by If the dummy data is written in the logical address area, the dummy data is written out of the logical address area of the recording medium 9 by referring to the position information stored in the position information storage means 17 as necessary. Extracts the unique media information (preferably written as data not in a file format) and writes the unique media information to the recording medium 9 or the unique media information is valid information. In this case, the scrambled file is restored using the file restoration means 19. Therefore, no dummy data (or dummy data and unique media information) is written on the recording medium 9 copied illegally, so that unauthorized copying of the recording medium 9 can be more reliably prevented.

In each of the above embodiments, the force S shown in the case where the file read from the digital camera 7, the medium 8, and the film is written to the recording medium 9, the present invention is not limited to the above embodiment, and any file may be used. The same can be applied to a case in which is written in the recording medium 9 or storage means. Industrial applicability

According to the information recording apparatus, the recording medium, and the reproduction program of the present invention, the information recording apparatus does not simply record the file provided by the user on a recording medium such as a CD-R, but performs scramble processing on the file. On a recording medium, and the unique media information for identifying the recording medium cannot be accessed by the personal computer. Dummy data written outside the address area or formed in a format that cannot be recognized by the personal computer OS (for example, data in which the address information is not described in the lead-in TOC) is written to the recording medium. Even if it is copied using general writing software, the unique media information or / and dummy data cannot be copied, and the playback program does not have the unique media information or Z and dummy data recorded on it. Since the file cannot be restored, unauthorized copying of the recording medium can be reliably prevented.

Claims

The scope of the claims

1. File input means,

Means for converting the input file into a form reproducible by a specific program; and at least the converted file, wherein identification information referred to by the specific program is recorded outside a logical address area in advance. Means for writing in a logical address area of a recording medium.

2. Means for generating identification information referenced by a particular program;

Means for inputting a file,

Means for converting the input file into a form playable by the specific program;

At least means for writing the converted file into a logical address area of the recording medium and writing the identification information outside the logical address area.

3. means for generating identification information referenced by a particular program;

Means for storing dummy data in a form in which the OS of the computer into which the recording medium is inserted cannot be recognized,

Means for inputting a file,

At least the converted file and the dummy data are Means for writing to the logical address area and writing the identification information to the outside of the logical address area.

4. The method according to any one of claims 1 to 3, wherein the identification information is data in a form that the computer of the computer into which the recording medium is inserted cannot be recognized. Information recording device.

5 means for storing the dummy data in the form of 1 /, the OS of the computer into which the recording medium is inserted cannot be recognized,

Means for inputting a file,

Means for converting the input file into a form that can be reproduced by a specific program; and at least means for writing the converted file and the dummy data into a logical address area of the recording medium. Information record

6. A recording medium characterized in that identification information referred to by a specific program is recorded outside a logical address area in advance.

7.At least a file converted to a form that can be played back by a specific program is recorded in the logical address area, and identification information referenced by the specific program is recorded outside the logical address area. Recording medium characterized by the above-mentioned.

8. At least the files that have been converted to a form that can be The dummy data in a form that cannot be recognized by the OS of the computer into which the recording medium is inserted is recorded in the logical address area, and the identification information referred to by the specific program is recorded outside the logical address area. A recording medium characterized by the above-mentioned.

59. The method according to any one of claims 6 to 8, wherein the identification information is data in a form in which an OS of a computer into which the recording medium is inserted cannot be recognized. recoding media.

'10. At least, a file converted to a format that can be played back by a specific program and 0 dummy data in a format that cannot be recognized by the OS of the computer into which the recording medium is inserted are recorded in the logical address area. A recording medium characterized in that:

1 1.

Means for extracting the identification information of the recording medium from outside the logical address area of the recording medium with reference to the pre-recorded position information,

A reproducing program for functioning as a means for restoring a file converted into a predetermined format recorded in a logical address area of the recording medium to an original file when the identification information is recorded. . 0 1 2.

Means for reading dummy data in a form in which the OS of the computer cannot be recognized from the logical address area of the recording medium;

Referring to the pre-recorded position information, the position information is read from outside the logical address area of the recording medium. Means for extracting identification information of the recording medium,

When the dummy data and the identification information are recorded, the file converted into a predetermined format recorded in the logical address area of the recording medium is restored to an original file. And a playback program.

13. The reproduction program according to claim 11, wherein the identification information is data in a form in which OS of a computer using the recording medium cannot be recognized.

Means for reading the dummy data in a form in which the OS of the computer cannot be recognized from the logical address area of the recording medium, and when the dummy data is recorded, the computer reads the dummy data in the logical address area of the recording medium. A reproduction program for restoring a file converted into a predetermined format into an original file.