WO2005027118A1 - 情報記録装置、再生装置、再生及び記録プログラム - Google Patents
情報記録装置、再生装置、再生及び記録プログラム Download PDFInfo
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- WO2005027118A1 WO2005027118A1 PCT/JP2004/013267 JP2004013267W WO2005027118A1 WO 2005027118 A1 WO2005027118 A1 WO 2005027118A1 JP 2004013267 W JP2004013267 W JP 2004013267W WO 2005027118 A1 WO2005027118 A1 WO 2005027118A1
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- Prior art keywords
- file
- recording medium
- recording
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/0013—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the measure concerns not the entire record carrier, but a specific physical or logical area of one or more record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00297—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD
- G11B20/00304—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD the key being stored in the lead-in area [LIA]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00615—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames
Definitions
- the present invention relates to a reproducing apparatus and a reproducing program for reproducing a file recorded on a recording medium, an information recording apparatus for recording a file on a recording medium, and a recording program.
- a user takes a photo with a digital camera, brings the digital camera or digital camera media recording the image file of the photo to a photo shop such as a mini lab, and installs an unmanned terminal (kiosk) installed in the store.
- a photo shop such as a mini lab
- an unmanned terminal Kiosk
- an image file recorded on a digital camera media can be written on a recording medium such as 0-1 or 0-1 (for example, see Japanese Unexamined Patent Application Publication No. 73, etc., p. 416, p. 3, Fig. 3).
- 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 DV recorders.
- image playback devices such as DVD players and DV recorders.
- the converted image file CD-R, DVD-R and other recording media services are also available! / Puru.
- 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.
- An image file can be used by inserting a medium into an image reproducing device and displaying an image file.
- the recording medium is used not only by the user who provides the image file, but also for presenting it to an acquaintance or the like who wants to show a photographic image.
- the image file to be recorded on the recording medium is an image file based on a photographic image photographed by the user himself, the user can record the image file on the recording medium without restriction, but there is a restriction on copying the image file.
- the image file is converted so that it can be reproduced only by a specific program, and identification information for operating the specific program cannot be copied.
- a method of writing the data on a recording medium and providing it to the user is used. If such a method is used, the identification information is not copied even when the recording medium is copied, so that illegal copying of the recording medium can be effectively prevented. You can.
- the present invention has been made in view of the above problems, and a main object of the present invention is to record a file on a recording medium on which a file converted into a form reproducible by a specific program is recorded without being converted. Playback device and playback program that can be used even if the recording medium is copied, and information recording that can automatically identify whether the file recorded on the recording medium is a copy-limited file. ⁇ Equipment and record producer To provide a system.
- the information recording apparatus of the present invention comprises: input means for inputting a file; file discriminating means for identifying whether or not the input file is a copy-restricted file; A conversion unit for converting the file into a form that can be reproduced by a program; and if the input file is not a file with copy restrictions, write the file to a recording medium, and the input file is a file with the copy control.
- file discriminating means for identifying whether or not the input file is a copy-restricted file
- a conversion unit for converting the file into a form that can be reproduced by a program
- write the file to a recording medium and the input file is a file with the copy control.
- at least a recording unit that writes the converted file and information for operating the specific program on the recording medium is provided.
- the input file or the converted file is written in a logical address area of the recording medium, and information for operating the specific program is written in the logical medium of the recording medium. It can be configured to write outside the address area.
- the file with copy restriction is a file in which information indicating that copying is permitted only to the authorized person is described in or attached to the file, or a predetermined method.
- the conversion means may determine the input file in advance if the copy-limited file is a file that can be restored only by a predetermined method. After restoring by the specified method, it can be converted to a form that can be reproduced by a specific program.
- the recording program of the present invention causes a computer to function as at least file identification means for identifying whether an input file is a copy-limited file.
- the recording program of the present invention comprises: a computer, at least an input unit for inputting a file, a file identification unit for identifying whether the input file is a copy-restricted file, and specifying the file with a copy restriction.
- Conversion means for converting the file into a form that can be reproduced by the program described above, if the input file is not a file with copy restriction, write the file to a recording medium, and if the input file is the file with copy restriction, Is a function of recording means for writing the converted file and information for operating the specific program on the recording medium.
- whether or not the input file is a copy-restricted file is determined by information indicating that copying is permitted only to a rightful authorized person due to copyright setting or the like. Identify by referring to whether or not the file described or attached to the file has been created so that it can be restored only by a predetermined method, and if it is a copy-limited file, play it only with a specific program The file is scrambled so that it can be recorded on the recording medium, and the identification information referred to by a specific program is recorded on the recording medium. If the file is not a copy-limited file, it is recorded on the recording medium without scrambling. I do. This can prevent unauthorized copying of files that need to be protected by copyright, etc., and also allows users to record on recording media without being aware of whether the files are copy-restricted. it can.
- the reproducing apparatus of the present invention is a reproducing apparatus for reproducing a file recorded on a recording medium.
- a judging means for judging whether or not the file has been converted into a form which can be reproduced by a specific program. At least.
- the reproducing apparatus of the present invention is a reproducing apparatus for reproducing a file recorded on a recording medium, wherein the file is converted into a form which can be reproduced by a specific program.
- Discriminating means for discriminating whether the file exists restoring means for restoring the file to the original file when it is judged that the file has been converted, and a file recorded on the recording medium or the restored file.
- the reproduction program of the present invention causes a computer to function as a determination unit that determines whether a file recorded on a recording medium has been converted into a form that can be reproduced by a specific program. .
- the reproduction program of the present invention comprises: a computer for determining whether a file recorded on a recording medium has been converted into a form that can be reproduced by a specific program; If it is determined that the file is an original file, the file functions as a restoring means for restoring the file to the original file, and a reproducing means for reproducing the file recorded on the recording medium or the restored file.
- the file when the identification information of the recording medium referred to by the specific program is recorded outside the logical address area of the recording medium, the file may be stored in the file. It may be configured to determine that the data is converted. Further, in the present invention, when information indicating that the file has been converted is recorded in the logical address area of the recording medium, it is determined that the previous language file has been converted. It can also be configured.
- the extension of the previous language file recorded on the recording medium is an extension stored in advance, it is determined that the file is converted. You can also.
- the file recorded on the recording medium is stored in another program.
- a configuration may be adopted in which the file is determined to be fe with the converted file.
- files such as images, contents, and applications recorded on the recording medium are scrambled / recorded (that is, converted into a form that can be specified and reproduced). Is automatically determined,
- the playback device of the present invention may be a portable player, a playback-only box, or a DVD player. Brief Description of Drawings
- FIG. 1 is an external view showing a configuration of an information recording apparatus and a reproducing apparatus according to one embodiment of the present invention.
- FIG. 2 is a block diagram showing functions of the information recording apparatus according to one embodiment of the present invention.
- FIG. 3 is a slow-chart diagram showing a procedure J for producing an information recording medium using the information recording apparatus according to one embodiment of the present invention.
- FIG. 4 is a diagram showing an information recording area of an information recording medium according to one embodiment of the present invention.
- FIG. 5 is a diagram showing an information recording area of an information recording medium according to one embodiment of the present invention.
- FIG. 6 is an external view showing another configuration of the information recording apparatus according to one embodiment of the present invention.
- FIG. 7 is an external view showing another configuration of the information recording apparatus according to one embodiment of the present invention.
- FIG. 8 is a block diagram showing a configuration of a playback device according to one embodiment of the present invention.
- FIG. 9 is a flowchart showing an image file reproducing procedure using the reproducing apparatus according to one embodiment of the present invention. It is a flowchart diagram shown.
- FIG. 10 is a sectional view showing the structure of a recording medium (CDR). BEST MODE FOR CARRYING OUT THE INVENTION
- the information recording apparatus in a preferred embodiment, means for inputting a file from a digital media or via a communication network, and determining whether the input file is a copy-limited file.
- File identification means for weaving, file conversion means for scrambled input files into a form reproducible by a specific program, unique media information generation means for generating unique media information, and storage medium for scrambled files At least a file recording means for writing the unique media information generated by the unique media information generating means to the outside of the logical address area, and writing the unique media information generated by the unique media information generating means outside the logical address area. Is recorded as is and copied.
- the scrambled file is recorded in the logical address area, and unique media information used in a specific program for reproducing the scrambled file is written outside the logical address area.
- unique media information used in a specific program for reproducing the scrambled file is written outside the logical address area.
- the information recording device 1 of the present embodiment is a recording medium (such as a smart media, a compact flash (registered trademark), a memory stick (registered trademark), an SD memory card, or a multimedia card) for a digital camera or a mobile phone with a camera.
- the media 8 will be referred to as a media loading unit 2, a digital camera 7 and a camera device such as a mobile phone 7a with a camera (hereinafter, referred to as a digital camera 7).
- File input means such as a network connection unit that downloads files from the server 25 via a communication network 24, such as the Internet, and a device connection unit 3 for connecting the Still image files, video files, and music files that have been read or downloaded from
- a recording medium loading section 4 for loading a recording medium 9 such as a CD-R or a DVD-R for recording audio files, content files, application files, etc. (hereinafter, referred to as files), buttons, a keyboard,
- An operation unit 6 such as a mouse, and a display unit 5 such as an LCD and a CRT (a touch panel having both the operation unit 6 and the display unit 5 are shown in the figure) are provided.
- the playback device 18 of the present embodiment includes a recording medium loading unit 18a for loading a recording medium 9 such as a CD-R or a DVD-R on which the file is recorded, and a file reproducing unit. b, and the file recorded on the recording medium created by the information recording device 1 or a recording medium created by another device is reproduced by the reproducing device 18.
- FIG. 2 is a block diagram showing the functions of the information recording device 1. That is, 'File / record input means 1 for inputting files (for example, C. Still image files and music sound files that can be played on a computer) using the loading section 2, device connection section 3, network connection section, etc. 0, information input means 11 such as display unit 5 and operation unit 6, etc., and information indicating that only authorized persons are permitted to copy for reasons such as input file power and copyright setting Files that are described or attached to a file or files that can be restored by using a predetermined method (hereinafter, these files are collectively referred to as files with copy restrictions).
- files for example, C. Still image files and music sound files that can be played on a computer
- information input means 11 such as display unit 5 and operation unit 6, etc.
- information indicating that only authorized persons are permitted to copy for reasons such as input file power and copyright setting Files that are described or attached to a file or files that can be restored by using a predetermined method (hereinafter, these files are collectively referred
- File identification means 13 for identifying whether or not the information is unique, and unique media information for generating information (hereinafter referred to as unique media information) for identifying the self-recording medium 9 referred to by a specific program.
- File conversion means 14 for performing scramble processing on the input file / file converted for the image reproducing device in accordance with the input information from 1 and file transfer means 1 for controlling the recording order of the file.
- a file recording unit 16 for writing the file transferred by the file transfer unit 15 to a predetermined area of the recording medium 9 loaded in the recording medium loading unit 4, and a file to be written by the file recording unit 16
- a storage means 17 for temporarily storing.
- the form of the power information recording apparatus 1 that describes a kiosk-type information recording apparatus 1 that can be installed in a store such as a photo shop or a convenience store is arbitrary.
- each of the above-mentioned beatings may be configured as hardware in the information recording device 1, but the computer is configured as a recording program that functions as at least the file input unit 10 and the file identification unit 13; This recording program can be installed in the information recording device 1 and executed.
- step S101 the media loading unit 2 of the information recording device 1 is loaded with the media 8, or the digital camera 7 is connected to the device connection unit 3, or the network connection unit is connected to the communication network 24. Then, the recording medium 9 is loaded into the recording medium loading section 4.
- step S102 using the file input means 10, a file stored in a predetermined area of the digital camera 7 ⁇ media 8 or a file recorded in the server 25 (here, digital Scan still image files recorded on camera 7 or media 8).
- the file identification means 13 determines whether or not the input file is a file with copy restriction based on reasons such as setting a copyright in the file header or the like. Information showing that only authorized persons are permitted to copy!
- the force in which ⁇ is described, the force with which the information is attached to the file Refer to whether it is created so that it can be restored only by the specified method (for example, the power that is converted so that it can be played only by a specific program, the power that requires input of ID information ⁇ password when playing the file), etc. And identify.
- the method of identifying whether or not a file is copy-restricted is not limited to the above method. For example, a file corresponding to a list stored in advance in the memory means 17 is determined to be a file with copy restriction. You can also.
- step S 104 If the input file is identified as a copy-restricted file in step S 104, if necessary, in step S 105, the read still image is read using the file conversion unit 14.
- Image files in other file formats here, video files such as MPEG 1 and MPEG 2 that can be read by image playback devices such as DVD players and DVD recorders, V-CD format files, DVD-Video Format file.
- the method of creating a video file from a still image file is not particularly limited.For example, when a still image file is displayed like a slide show, data with a difference of 0 for a slide display time is added to the still image file. To generate a video file, or add a difference data based on the slide effect set by the slide show program to a still image file to generate a moving image file. If the input file is created so that it can be restored only by a predetermined method, the above process is performed after restoring the original file.
- step S106 all or a part of the file input using the file conversion means 14 or the file converted for the image reproducing device is subjected to scramble processing.
- the scrambling process here means changing the file format so that it cannot be played without using a dedicated application (specific program). For example, changing the file data arrangement, Split files, It means general processing such as conversion to a file with a special "l" extension. Also, in some cases, not all the files to be self-recorded on the recording medium 9 are scrambled. When copying the recording medium 9 using a personal computer, Video—CD format data or DVD—Video format data This is because it may not be necessary to perform scramble processing because some of the data cannot be copied. If the input file has been scrambled in advance, the scrambled file can be used as it is without restoring it. In that case, the scrambling process in step S106 is unnecessary.
- the unique media information generating means 12 generates unique media information for identifying the recording medium 9.
- the content of the unique media information is not limited, and may be the name of a maker that manufactures the recording medium 9, and has a unique configuration so that the unique media information does not overlap in a plurality of recording media 9. You can do it.
- the unique media information only needs to be recorded in a format that can be recognized by a specific program, and is preferably recorded as data that is not in a file format so that the OS of a personal computer cannot be recognized.
- the unique media information is recorded on the recording medium 9. Since this unique media information is provided to prevent unauthorized copying of the finole, if the recording location and contents are easily known, the unique media information itself is also copied, and an unauthorized copy is made. It cannot be prevented. Therefore, in the present embodiment, at least a part of the unique media information is inaccessible to the OS of the personal computer (that is, outside the logical address area), specifically, inside the logical address area of the disk-type recording medium. Write to the area.
- CD-R is a polycarbonate substrate 100 on which cyanine, phthalocyanine, and azo Is formed by laminating an organic dye layer 101 such as silver, a reflective layer 102 such as silver, and a protective layer 103, and irradiates the organic dye layer 101 with laser light of a predetermined power to decompose the dye.
- the pits are formed by deforming the substrate to record information, and the laser power is controlled by the laser head system that irradiates laser light and the type of organic dye layer used. Since the optimum value varies depending on the type, the drive needs to know what kind of dye the CD-R is made with in order to reliably write and read information.
- the innermost periphery of the recording medium 9 is written on the innermost periphery of the recording medium 9 at the manufacturing stage, and the information is read by the drive firmware, and the firmware is used independently.
- the laser power is adjusted by controlling the laser head.
- the innermost area of the disc is used as an area for recording information related to the characteristics of the CD-R, and is usually an area that cannot be accessed by the OS.
- the unique media information of the recording medium 9 is written to the outside of the logical address area) so that the unique media information itself is not copied.
- the unique media information generation means 12 when the file is scrambled, the unique media information generation means 12 generates the unique media information and writes it outside the logical address area of the recording medium 9 to determine whether or not the scrambling process has been performed.
- the configuration is determined, the logical address area in which the file group for the computer and the file group for the image playback device are recorded, and any format indicating whether the file is scrambled (preferably, It is also possible to record dummy data in a format that the OS cannot recognize, and determine that the data is scrambled if the dummy data is recorded in the logical address area of the recording medium 9. You can also convert the file extension so that only certain programs can play the file.
- step S108 If it is determined in step S104 that the input file is not a copy-restricted file, in step S108, if necessary, the file conversion means 14 may be used in the same manner as described above. Is used to convert the read still image file into a file in another file format.
- the file transfer means 15 stores the files and associated files scrambled by the file conversion means 14 (hereinafter, these are collectively referred to as a file group for an image reproducing device).
- the data is transferred to a predetermined folder for writing provided in the means 17 in advance.
- the file recording unit 16 reads out the file group for the image reproducing device from the folder and records it in the logical address area of the recording medium 9.
- a Video-CD format recording medium 9 can be created, and MPEG 2 is used as the video format of the video file.
- DVD-R a recording medium 9 in DVD-Video format can be created.
- step S110 the file recording means 16 temporarily closes the segment before recording the file for the personal computer in order to divide the area of the file usable in the image reproducing device.
- step S111 the file transfer means 15 converts the file scrambled by the file conversion means 14, an application for displaying a still image file as a slide, a slideshow setting file, etc. (Collectively referred to as a personal computer file group) is transferred to a predetermined writing folder provided in the storage means 17 in advance.
- the file recording means 16 reads the personal computer file group from the folder, records the file group on the outside of the image reproducing device tear file group previously recorded on the recording medium 9, and ends a series of writing processes.
- the recording medium 9 created by the above procedure has a configuration as shown in FIG. 4 and FIG. That is, when the scramble processing is performed, as shown in FIG.
- a specific medium of a predetermined format (preferably a data format other than a file format) is provided outside the innermost logical address area of the disk-type recording medium 9.
- Information is recorded, and inside the logical address area outside the area, a file group for image playback equipment including scrambled files (VIDEO-CD format data or DVD-VIDEO format data is not scrambled).
- a file group for a personal computer including a scrambled file is recorded in the external control J.
- the OS of the personal computer is recognized in a logical address area. If not, dummy data of the format will be recorded.
- the scramble process is not performed, as shown in FIG. 5, the file group for the image reproducing device is recorded inside the logical address area, and the file group for the personal computer is recorded outside the logical address area.
- the entire input file was determined to be either a copy-limited file or a file without copy restriction, or a part of the input file was copy-limited. It can also be a file.
- the files with copy restrictions are scrambled in step S106, and in step S109 or S111, both the scrambled file and the non-scrambled file Should be recorded in
- the information recording apparatus 1 writes the specific media information on the recording medium 9, but the recording medium 9 on which the specific media information is written may be provided to the user. .
- the area in which the unique media information is written is an area in which information for specifying the type of dye and the like is recorded in the manufacturing stage of the recording medium 9 in advance. Together with the specific media information.
- 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 have the unique media information generating means 12. Since it is not necessary to write the unique media information in S107, the configuration and recording procedure of the information recording device 1 can be simplified.
- the file is reproduced by the reproducing device 18 using the self-recording medium 9 in which the scrambled file created in the information recording device 1 is recorded or the recording medium 9 in which the input file is recorded as it is.
- the procedure will be described with reference to the flowchart in FIG.
- step S201 the user inserts the recording medium 9 into the recording medium loading section 18a of the playback device 18.
- the reproducing apparatus 18 includes a position information storage means 20 for storing the recording position of the unique media information and the dummy data, and a position information stored in the position information storage means 20.
- File discriminating means 19 for discriminating whether or not the file recorded on the recording medium 9 is scrambled based on information such as whether or not it can be reproduced; and file restoration for restoring the scrambled file to its original file / file.
- Means 22 and a file reproducing means 23 for reproducing the restored file or the input file.
- the identification information extracting means 21 stores the information in the position information storing means 20. Get the stored location information (eg, physical address). Then, in step S203, the unique media information stored in 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 the dummy data is recorded in X ⁇ format that cannot be recognized by the OS of the personal computer. Therefore, the force cannot be extracted by the identification information extracting means 21 which has acquired the position information. Note that the unique media information and the dummy data need not be recorded as continuous data, but may be recorded as discrete data. In such a case, data at a plurality of positions specified by the position information may be recorded. Combine to obtain unique media information and dummy data.
- step S204 the file discriminating means 19 judges that the file is scrambled when the unique media information or the dummy data is recorded on the self-recording medium 9, and
- step S206 a process of restoring the scrambled file to the original file using the file restoring means 22 is performed.
- the method of restoring the scrambled file is not particularly limited.However, for example, if encryption is performed according to a predetermined rule, decryption is performed according to the rule, or the file is damaged (if J is performed, the file is divided).
- the above-mentioned unique media information or dummy data may be used. For example, a key for decoding into the unique media information or dummy data may be used. Information may be recorded, and an encrypted file may be decrypted using the key information.
- the file discriminating means 19 checks the extension of the file recorded on the recording medium 9, and this extension is If the extension matches the extension stored in advance, it is determined in step S204 that the file has been scrambled. It is also possible to determine whether a file is scrambled / reproduced by playing it back with another program (eg, a commercially available image display program). In this case, when the recording medium 9 is inserted in step S201, the file discriminating means 19 actually reproduces the file by using another program installed in advance. Judge as a file scrambled by O4.
- the file reproducing means 23 displays the restored file or the original file on the display section 18b.
- 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 the temporary storage means of the playback device 18 (for example, the storage means 17), and the file whose reproduction is instructed may be read from the temporary storage means and displayed.
- the restored file may The problem of being copied can be avoided.
- the reproducing apparatus 18 of the present embodiment refers to the position information stored in the position information storage means 20 and stores the unique medium information or the logical address area written outside the logical address area of the recording medium 9. Extract the dummy data written to the storage medium 9 and determine that the file is scrambled when the specific media information or the dummy data is written to the recording medium 9 or check the file extension. If the file matches an extension stored in advance, it is determined that the file is scrambled, or the file is played back using another program. It is determined that the file has been pulled, and the scrambled file is restored using the file restoring means 22. Therefore, the file can be reproduced by the reproducing device 18 using any of the recording medium 9 on which the scrambled file is recorded and the recording medium ⁇ $: 9 on which the input file is recorded as it is, and It can improve Japanese convenience.
- the information recording device does not simply record the input file / file on a recording medium such as a CD-R, but automatically identifies whether the input file is a copy-restricted file.
- a recording medium such as a CD-R
- the file is scrambled and recorded on the recording medium, and the unique media information for identifying the recording medium is written outside the logical address area that cannot be accessed by the PC OS, and the PC OS cannot be recognized. This is because the dummy data formed in the format is written to the recording medium. If the file is not a copy-restricted file, the file is recorded as it is on the recording medium.
- a copy-limited file cannot be played on a recording medium on which the identification information is written unless a specific program is used, so that unauthorized use of the copy-limited file can be reliably prevented, and the user can also use it.
- the file can be recorded on the recording medium without being aware of whether or not the file has copy restrictions.
- the playback device automatically determines whether or not the file is scrambled by referring to the presence or absence of identification information, the type of file extension, whether or not the file can be played by another program, and the like. If not, the file is played as it is, and if the file is scrambled, it is restored using a specific program and then played.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Storage Device Security (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Description
Claims
Priority Applications (1)
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JP2005513927A JPWO2005027118A1 (ja) | 2003-09-12 | 2004-09-06 | 情報記録装置、再生装置、再生及び記録プログラム |
Applications Claiming Priority (4)
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JP2003321301 | 2003-09-12 | ||
JP2003-321301 | 2003-09-12 | ||
JP2003-321302 | 2003-09-12 | ||
JP2003321302 | 2003-09-12 |
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WO2005027118A1 true WO2005027118A1 (ja) | 2005-03-24 |
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PCT/JP2004/013267 WO2005027118A1 (ja) | 2003-09-12 | 2004-09-06 | 情報記録装置、再生装置、再生及び記録プログラム |
Country Status (3)
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US (1) | US20050060570A1 (ja) |
JP (1) | JPWO2005027118A1 (ja) |
WO (1) | WO2005027118A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003228915A (ja) * | 2002-02-01 | 2003-08-15 | Sony Corp | 再生制御方法、プログラム、記録媒体 |
US20080052641A1 (en) * | 2006-06-26 | 2008-02-28 | Sun River Systems, Inc. | System and method for secure and private media management |
US20080086491A1 (en) * | 2006-10-04 | 2008-04-10 | Mediatek Inc. | Multimedia management and playback apparatus |
US8261097B2 (en) * | 2006-12-28 | 2012-09-04 | Teac Corporation | Data recorder having data encryption function and data reproducing device |
KR101402623B1 (ko) * | 2007-08-29 | 2014-06-03 | 삼성전자 주식회사 | 디스플레이장치 및 그 제어방법 |
WO2010053445A1 (en) * | 2008-11-10 | 2010-05-14 | Creative Technology Ltd | A method and platform for purchasing and downloading digital content into a digital storage apparatus, with a supplementary apparatus used with the platform |
JP5532726B2 (ja) * | 2009-07-31 | 2014-06-25 | ソニー株式会社 | 記録媒体製作方法、記録媒体及び記録媒体の再生装置 |
Citations (4)
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JP2001057021A (ja) * | 1999-08-12 | 2001-02-27 | Ricoh Co Ltd | デジタルデータ記録再生システム |
JP2001202694A (ja) * | 1999-06-23 | 2001-07-27 | Mitsubishi Chemicals Corp | 記録媒体、記録媒体の初期化方法並びに記録媒体上での暗号化方法及び暗号化装置並びに復号化装置並びに音響・映像・データ装置 |
JP2001319329A (ja) * | 2000-05-11 | 2001-11-16 | Taiyo Yuden Co Ltd | ライトワンス型光ディスク用記録装置および記録媒体 |
JP2002163857A (ja) * | 2000-11-22 | 2002-06-07 | Sharp Corp | 情報記録再生方法、情報記録媒体、情報記録再生装置、並びに情報記録媒体製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US5870756A (en) * | 1996-04-26 | 1999-02-09 | Fujitsu Limited | Interchangeable storage medium containing program for processing data files thereupon to match a data file format to a computer system |
-
2004
- 2004-09-06 JP JP2005513927A patent/JPWO2005027118A1/ja active Pending
- 2004-09-06 WO PCT/JP2004/013267 patent/WO2005027118A1/ja active Application Filing
- 2004-09-08 US US10/935,428 patent/US20050060570A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001202694A (ja) * | 1999-06-23 | 2001-07-27 | Mitsubishi Chemicals Corp | 記録媒体、記録媒体の初期化方法並びに記録媒体上での暗号化方法及び暗号化装置並びに復号化装置並びに音響・映像・データ装置 |
JP2001057021A (ja) * | 1999-08-12 | 2001-02-27 | Ricoh Co Ltd | デジタルデータ記録再生システム |
JP2001319329A (ja) * | 2000-05-11 | 2001-11-16 | Taiyo Yuden Co Ltd | ライトワンス型光ディスク用記録装置および記録媒体 |
JP2002163857A (ja) * | 2000-11-22 | 2002-06-07 | Sharp Corp | 情報記録再生方法、情報記録媒体、情報記録再生装置、並びに情報記録媒体製造方法 |
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JPWO2005027118A1 (ja) | 2006-11-24 |
US20050060570A1 (en) | 2005-03-17 |
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