WO2006098136A1 - 情報記録再生装置 - Google Patents
情報記録再生装置 Download PDFInfo
- Publication number
- WO2006098136A1 WO2006098136A1 PCT/JP2006/303582 JP2006303582W WO2006098136A1 WO 2006098136 A1 WO2006098136 A1 WO 2006098136A1 JP 2006303582 W JP2006303582 W JP 2006303582W WO 2006098136 A1 WO2006098136 A1 WO 2006098136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- content
- title key
- unit
- media
- navigation information
- Prior art date
Links
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
- G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
-
- 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
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
- G11B20/00173—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
-
- 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
- G11B20/00231—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 obtained from a local external medium, e.g. a card
-
- 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
- G11B20/00347—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 wherein the medium identifier is used as a key
-
- 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
- G11B20/00485—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00528—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
- H04L2209/603—Digital right managament [DRM]
Definitions
- the present invention relates to an information recording and reproducing apparatus for recording and reproducing secure content on a recording medium incorporated therein.
- the present invention relates to an information recording and reproducing apparatus in which secure content can be reproduced by a portable device by checking out a secure content to a memory card having a copyright protection function.
- these portable devices record still image and moving image contents in an internal memory, and record them on a removable memory card, so that they can be exchanged with other portable devices and PCs (Persona 1 Computer). Content can be moved easily, and various data in the portable device can be brought out of the device.
- a method is adopted in which the content is encrypted and recorded on the memory card by using a memory card having a copyright protection function. Since encrypted content is often decrypted using a media ID that is a unique number of a memory card, even if the encrypted content is copied to another memory card, the media ID is not Decryption is difficult because it can not be replicated. As such, by using a memory card having a copyright protection function, copying of content is controlled. As described above, copying encrypted content to a memory card is called checkout below.
- Patent Document 1 discloses a terminal device that receives encrypted content data and a license key from a distribution server. However, again in this case, the server In order to download data and record it on a memory card, a large capacity memory card is required.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-91827
- the data size of content handled by portable devices is increasing.
- the user can record a large amount of content on the memory card by replacing the conventionally used memory card with one having a large capacity.
- large-capacity memory cards are still expensive and difficult to obtain.
- An information recording and reproducing apparatus incorporates a recording medium to record and reproduce content.
- a title key generation unit for generating a title key; and the content according to the title key.
- a content encryption unit that performs cryptographic processing, a content storage unit that stores the cryptographically processed content, a navigation information storage unit that stores navigation information that is information related to reproduction of the content including the title key, the title It has a title key encryption unit that encrypts keys, an interface unit that exchanges data with external media, a transceiver that communicates with the outside, and a control unit.
- the control unit stores the media ID input through the interface unit in the navigation information storage unit.
- the control unit outputs the title key and the medium ID included in the navigation information acquired from the navigation information storage unit to the title key encryption unit.
- the title key encryption unit encrypts and outputs the title key according to the media ID.
- the control unit outputs the encrypted title key and a connection method from the outside to the transmission / reception unit to the external medium via the interface unit.
- the information recording and reproducing method of the present invention comprises the steps of: generating a title key
- the navigation information And a step of transmitting the stored encrypted content to the outside if the media ID and the media ID received from the outside coincide with each other.
- a step of receiving the encrypted content is further included;
- An information recording and reproducing program includes a title key generation unit for generating a title key, a content encryption unit for encrypting the content according to the title key, and a content storage unit for storing the encrypted content.
- a navigation information storage unit for storing navigation information which is information related to reproduction of the content including the title key, a title key encryption unit for cryptographically processing the title key, and exchange data with an external medium
- a program for operating an information recording and reproducing apparatus comprising an interface unit, a transmitting / receiving unit for communicating with the outside, and a control unit,
- the control unit stores the media ID input through the interface unit in the navigation information storage unit.
- the control unit outputs the title key and the medium ID included in the navigation information acquired from the navigation information storage unit to the title key encryption unit.
- the title key encryption unit encrypts and outputs the title key according to the media ID.
- the control unit outputs the encrypted title key and a connection method from the outside to the transmission / reception unit to the external medium via the interface unit.
- the recording or transmission medium of the present invention is a computer readable medium carrying an information recording and reproducing program.
- the information recording and reproducing apparatus According to the information recording and reproducing apparatus, the information recording and reproducing method, and the information recording and reproducing program of the present invention, a title for decoding secure content on an external medium even when the secure content having a large data size is checked out to the external medium. There is no need to record secure content with a large data size on the external media body by recording the key and the method for accessing the server on which the secure content is recorded.
- the portable device into which the external media is inserted reads out the method for accessing the information recording and reproducing device recorded in the external media, and accesses the information recording and reproducing device via the network such as the Internet, Request secure content to be played back.
- the network such as the Internet
- the title key recorded inside the external media is encrypted with a media ID unique to the external media. Therefore, even if the data in the external media is copied, the media ID can not be copied, and the encrypted title key can not acquire the title key correctly on the copied external media.
- the information recording / reproducing apparatus power of the external media acquired when checking out the secure content to the external media, and the external power media of the external media inserted into the portable device requesting secure content are external media Send secure content to mobile device only if ID is assigned. As a result, it is possible to prevent the transmission of unnecessary secure content by refusing secure content requests from portable devices into which unauthorized external media have been inserted.
- the information recording and reproducing apparatus of the present invention it is possible to check out to a small-capacity memory card in order to reproduce secure content on a portable device, and the secure content is illegal. Duplication can be prevented.
- FIG. 1 is a block diagram of an information recording and reproducing apparatus according to an embodiment of the present invention.
- FIG. 2 System configuration of the information recording / reproducing apparatus in the embodiment of the present invention
- FIG. 3 Diagram of navigation information in the embodiment of the present invention
- FIG. 4 An explanatory diagram of the encryption processing of the title key in the embodiment of the present invention
- FIG. 5 Operation flow chart of the information recording / reproducing apparatus in the embodiment of the present invention
- FIG. 6 Operation flow chart of the information recording / reproducing apparatus in the embodiment of the present invention
- FIG. 7 Operation flow chart of the information recording and reproducing apparatus in the embodiment of the present invention
- FIG. 1 is a block diagram showing a configuration of an information recording and reproducing apparatus according to an embodiment of the present invention.
- the information recording / reproducing apparatus includes an external input unit 101, an encoding unit 102, a content encryption unit 103, a switch 104, a switching terminal 105, a switching terminal 106, a control unit 107, and a title key generating unit. 108, content storage unit 109, operation unit 110, navigation information storage unit 111, decoding unit 112, external output unit 113, title key encryption unit 114, interface unit 115, memory card 116 which is an external medium, transmission / reception It consists of a part 117 and an antenna 118.
- the external input unit 101 inputs content from the outside and outputs the content to the encoding unit 102.
- the encoding unit 102 encodes the input content according to a predetermined coding method.
- Switching terminals 105 and 106 and switch 104 form a switch switching circuit, and when switch 104 is connected to switching terminal 105, data output from encoding section 102 is input to contrast encryption section 103. When the switch 104 is connected to the switching terminal 106, the data output from the content encryption unit 103 is input to the decoding unit 112.
- Content encryption unit 103 encrypts the content input from encoding unit 102 using a title key, and outputs the encrypted content to content storage unit 109.
- the encrypted content input from the content storage unit 109 is decrypted and output to the decoding unit 112.
- the control unit 107 includes a content encryption unit 103, a title key generation unit 108, a content storage unit 109, an operation unit 110, a navigation information storage unit 111, a title key encryption unit 114, an interface unit 115, and a transmission / reception unit 117. While performing data control between them, control the whole of the information recording and reproducing apparatus.
- the data to be controlled is mainly data such as content, navigation information, title key and so on.
- the title key generation unit 108 encrypts the content according to a command from the control unit 107. Generate a title key to be used when
- the content storage unit 109 records the encrypted content on a recording medium.
- Operation unit 110 detects a key operation of the user and outputs the content of the operation to control unit 107.
- the navigation information storage unit 111 records navigation information including information necessary for reproduction, such as a content ID which is a unique number of the content, a title key at the time of decryption processing of the content subjected to decryption processing, and the like. .
- Decoding section 112 decodes the content output from content encryption section 103 according to a predetermined coding method, and outputs the decoded content to external output section 113.
- the external output unit 113 outputs the content input from the decoding unit 112 to an output device such as an external display or a speaker.
- the title key encryption unit 114 receives the title key generated by the title key generation unit 108 and the media ID of the memory card from the control unit 107, and encrypts the title key using the media ID.
- the interface unit 115 exchanges data between the information recording and reproducing apparatus and the memory card 116.
- the memory card 116 is a memory having a nonvolatile memory which can be inserted into the information recording / reproducing apparatus and the portable device. Some of the memory has an area that can not be accessed without performing authentication processing, and this area stores important information related to the copyright protection function.
- the transmission / reception unit 117 communicates with an external portable device or the like using the antenna 118.
- FIG. 2 shows an example of a system configured by the information recording / reproducing apparatus and the portable device according to the embodiment of the present invention.
- the information recording / reproducing apparatus 201 and the portable device 202 are connected to the network 203 and the memory card 11.
- the network 203 is assumed to be a public telephone network or the Internet.
- FIG. 3 shows a list of navigation information and contents recorded in the information recording / reproducing apparatus according to the embodiment of the present invention, and a list of navigation information recorded in the memory card. is there.
- FIG. 3 shows a list of navigation information and contents recorded in the information recording / reproducing apparatus according to the embodiment of the present invention, and a list of navigation information recorded in the memory card. is there.
- FIG. 4 shows a correlation diagram between the title key recorded in the information recording / reproducing apparatus according to the embodiment of the present invention and the cryptographically processed title key recorded in the memory card.
- FIGS. 5 and 6 are flowcharts of operation programs when the information recording / reproducing apparatus according to the embodiment of the present invention checks out the content on the memory card.
- FIG. 7 is a flow chart of an operation program when the information recording / reproducing apparatus according to the embodiment of the present invention receives a content request for the portable device into which the memory card is inserted.
- the operation unit 110 detects the key operation and outputs the operation content to the control unit 107.
- the control unit 107 which has input the recording command is recorded in the navigation information storage unit 111.
- navigational information is also used to search for content IDs and to reserve unused content IDs.
- control unit 107 instructs the title key generation unit 108 to generate a title key, and the title key generation unit 108 outputs the generated title key.
- the control unit 107 controls the content encryption unit 10 to obtain the title key acquired from the title key generation unit 108.
- control unit 107 connects the switch 104 to the switching terminal 105, and the content input from the external input unit 101 is encoded using encoding! / !, and the content B sound unit 103 is encoded.
- the encrypted content is encrypted using a title key.
- the control unit 107 causes the content storage unit 109 to execute the B-tone-processed content and the content ID. It associates and records, and continues the recording process until a recording stop instruction by the user.
- the operation unit 110 detects the key operation and outputs the content of the operation to the control unit 107.
- the control unit 107 that has received the stop command instructs the content encryption unit 103 to stop the encryption process, and stops acquisition of the encrypted content. Then, the content ID, title key, checkout destination, and the like are recorded in the navigation information, and registered in the navigation information storage unit 111.
- the content input to the information recording and reproducing apparatus can be subjected to cryptographic processing and recorded.
- D is # 1001, # 1002, # 1003.
- Content ID # 1001 content is encrypted with title key 1 and checked out in memory.
- Content of Content ID # 1002 is encrypted with Title Key 2 and
- the information recording and reproducing apparatus displays a menu on the display (S501). It is assumed that the menu has options to play, record, check out, and delete.
- the operation unit 110 detects a key operation and notifies the control unit 107.
- control unit 107 When the control unit 107 detects that checkout is selected (S 502), the control unit 107 performs an authentication process with the inserted memory card 116 through the interface unit 115 (S 503, S 5).
- the control unit 107 acquires the media ID of the memory card 116 during the authentication process.
- control unit 107 acquires all navigation information from navigation information storage unit 111 (S 505), and displays the content registered in navigation information on the display. Then, the user is asked to select the content to be checked out (S506).
- operation unit 110 detects the key operation and notifies control unit 107 of the detected key operation.
- the control unit 107 detects the selected content (S601)
- the navigation information stored in the navigation information storage unit 111 is searched to extract the selected content (S602).
- the content ID # 1001 is selected by the user.
- the title key encryption unit 114 encrypts the title key 1 using the input media ID to create an encrypted / title key B, and outputs it to the control unit 107 (S 603).
- the navigation information of the navigation information storage unit 111 is updated (S604).
- control unit 107 shifts to an operation of updating navigation information recorded in the memory card 116.
- the control unit 107 requests the memory card 116 for navigation information recorded in the memory card 116 (S 605).
- the memory card 116 transmits the navigation information recorded therein to the information recording / reproducing apparatus (S 605 a).
- the navigation information recorded in the memory card is the content ID, the encrypted key, the title key, and the IP address of the information recording / reproducing apparatus in which the content is recorded.
- the control unit 107 receives navigation information from the memory card 116 (S 606), adds navigation information to be checked out to the received navigation information, and adds the navigation information to the memory card via the interface unit 115. It writes in 116 (S607).
- the memory card 116 internally records the received navigation information (S 607 a).
- control unit 107 ends the checkout operation (S 608).
- the content recorded in the information recording and reproducing apparatus can be checked out to the memory card.
- the control unit 107 determines whether or not the media ID of the memory card checked out and the media ID that has also received the portable device power are compatible (S 701 c).
- the control unit 107 determines whether the media ID of the memory card checked out and the media ID received by the portable device are identical (S 701 c), but if they do not match, the request is made. The portable device ends the reproduction operation without transmitting the content (S705).
- the encrypted content when there is a mobile device power content request, the encrypted content can be transmitted to the mobile device.
- the title key and the content for decrypting the encrypted content are used.
- the method of accessing the recorded information recording / reproducing apparatus 201 is recorded on the memory card 116, and it is transmitted through the network 203 such as the Internet.
- the network 203 such as the Internet.
- the user can record the content on the information recording and reproducing apparatus 201 and reproduce it on the portable device 202 which can insert the memory card 116 without worrying about the capacity. be able to.
- the memory card 116 stores only a small amount of information V, so a large capacity memory card 116 is required.
- a key for decoding the encrypted content flowing on the network 203 is recorded on the memory card 116. Therefore, even if a third party illegally duplicates the encrypted content flowing on the network 203, it is impossible to decrypt it. In this way, reproduction restrictions can be imposed on copyrighted content.
- the information recording / reproducing apparatus 201 since the information recording / reproducing apparatus 201 records the media ID which is the unique information of the checked out memory card 116! /, It is from the portable device 202 into which the memory card other than the checked out memory is inserted. Content requests can be eliminated. Therefore, it is possible to restrict transmission and reception of the encrypted content on the unnecessary network 203.
- the content is checked out using the memory card 116 as the external medium, but the external medium may be a recording medium having a media ID.
- the media ID is used to determine the content transmission permission to the portable device 202.
- the determination is performed using the result of the authentication process between the portable device 202 and the memory card 116. A little.
- the content is specified and! /,!, Is music, video, audio, still image
- the content encrypted with the title key is transmitted / received from the information recording / reproducing apparatus 201 to the portable device 202 via the network 203, but the information recording / reproducing device 201 and the portable device 202 are further included. It may be encrypted and transmitted using a session key generated by both of them.
- the navigation information to be written to the memory card 116 at the time of checkout is the content ID, the encrypted title key, the IP address, the creator of the content, and the additional information such as the creation date. May be added.
- an IP address is used as an access method to the information recording / reproducing apparatus 201, but a unique number such as a telephone number or an HTTP address for specifying the information recording / reproducing apparatus 201, a unique character string , May be a unique symbol string.
- the navigation information recording area to be recorded on the memory card 116 is identified by the identification information, and the identification information of the navigation information is properly authenticated. It may be an area that can not be accessed unless it is a force.
- the information recording and reproducing program of the present invention is a program for causing a computer to execute the function of all or part of the means (or device, element, etc.) of the information recording and reproducing device. It is a program that works and works.
- the computer is not limited to pure hardware such as a CPU, but may include firmware, an OS, and peripheral devices.
- some means (or devices, elements, etc.) mean one or several means of the plurality of means, and devices of the above means (or devices, elements, etc.)
- the term "function" means all or part of the functions of the above means.
- the recording medium of the present invention is a recording medium readable by a computer recording the above-described information recording and reproducing program, and examples thereof include a CD-ROM, a ROM, and the like.
- the transmission medium of the present invention is for transmitting the above-described information recording and reproducing program, and examples thereof include the Internet, light 'radio wave' sound wave, and the like.
- the present invention is directed to an information recording and reproducing apparatus, an information recording and reproducing method, an information recording and reproducing program, and a recording or transmission medium, which reproduce secure content on a network by a portable device equipped with a small capacity external medium. It is useful.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/886,431 US8094820B2 (en) | 2005-03-14 | 2006-02-27 | Information recording/reproducing device |
JP2007508052A JP4802187B2 (ja) | 2005-03-14 | 2006-02-27 | 情報記録再生装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-070885 | 2005-03-14 | ||
JP2005070885 | 2005-03-14 |
Publications (1)
Publication Number | Publication Date |
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WO2006098136A1 true WO2006098136A1 (ja) | 2006-09-21 |
Family
ID=36991489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/303582 WO2006098136A1 (ja) | 2005-03-14 | 2006-02-27 | 情報記録再生装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8094820B2 (ja) |
JP (1) | JP4802187B2 (ja) |
CN (1) | CN100538719C (ja) |
WO (1) | WO2006098136A1 (ja) |
Citations (3)
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JP2002149172A (ja) * | 2000-11-10 | 2002-05-24 | Sony Corp | 記憶媒体及びダウンロード方法 |
JP2002260326A (ja) * | 2001-02-28 | 2002-09-13 | Sony Corp | 情報記録方法、情報記録装置、情報再生方法、情報再生装置、情報記録再生方法、情報記録再生装置および情報記録管理方法、情報記録管理装置 |
JP2003132425A (ja) * | 2001-10-25 | 2003-05-09 | Hitachi Maxell Ltd | 記録媒体並びにコンテンツ情報提供方法及びシステム |
Family Cites Families (6)
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JP2000236325A (ja) * | 1999-02-09 | 2000-08-29 | Lg Electronics Inc | デジタルデータファイルの暗号化装置及びその方法 |
JP2001230768A (ja) * | 2000-02-15 | 2001-08-24 | Sony Corp | 情報取り引きシステムおよび情報取り引き方法、並びにプログラム提供媒体 |
JP4553472B2 (ja) | 2000-09-20 | 2010-09-29 | 三洋電機株式会社 | データ端末装置 |
KR100932944B1 (ko) * | 2001-03-12 | 2009-12-21 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 컨텐트 아이템을 안전하게 저장하는 수신 디바이스와, 재생 디바이스 |
JP3864881B2 (ja) * | 2002-09-24 | 2007-01-10 | ヤマハ株式会社 | 電子音楽システムおよび電子音楽システム用プログラム |
US20060242074A1 (en) * | 2005-04-22 | 2006-10-26 | Nokia Corporation | Encrypting digital rights management protected content |
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2006
- 2006-02-27 JP JP2007508052A patent/JP4802187B2/ja not_active Expired - Fee Related
- 2006-02-27 US US11/886,431 patent/US8094820B2/en not_active Expired - Fee Related
- 2006-02-27 CN CNB2006800083224A patent/CN100538719C/zh not_active Expired - Fee Related
- 2006-02-27 WO PCT/JP2006/303582 patent/WO2006098136A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002149172A (ja) * | 2000-11-10 | 2002-05-24 | Sony Corp | 記憶媒体及びダウンロード方法 |
JP2002260326A (ja) * | 2001-02-28 | 2002-09-13 | Sony Corp | 情報記録方法、情報記録装置、情報再生方法、情報再生装置、情報記録再生方法、情報記録再生装置および情報記録管理方法、情報記録管理装置 |
JP2003132425A (ja) * | 2001-10-25 | 2003-05-09 | Hitachi Maxell Ltd | 記録媒体並びにコンテンツ情報提供方法及びシステム |
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CN101142583A (zh) | 2008-03-12 |
US20080165966A1 (en) | 2008-07-10 |
JPWO2006098136A1 (ja) | 2008-08-21 |
JP4802187B2 (ja) | 2011-10-26 |
CN100538719C (zh) | 2009-09-09 |
US8094820B2 (en) | 2012-01-10 |
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