JP2000182321A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2000182321A5 JP2000182321A5 JP1998352497A JP35249798A JP2000182321A5 JP 2000182321 A5 JP2000182321 A5 JP 2000182321A5 JP 1998352497 A JP1998352497 A JP 1998352497A JP 35249798 A JP35249798 A JP 35249798A JP 2000182321 A5 JP2000182321 A5 JP 2000182321A5
- Authority
- JP
- Japan
- Prior art keywords
- information signal
- information
- duplication
- permission
- identification information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 description 6
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
Description
【特許請求の範囲】
【請求項１】
識別情報と、複製回数を制限するための複製許可回数とを付加して情報信号を伝送し、
記録装置において、前記識別情報により前記情報信号を識別し、前記情報信号の複製許可回数に基づいて記録媒体への記録を制御する情報信号複製管理方法。
【請求項２】
複製回数が制限された情報信号を出力する情報信号出力装置と、前記情報信号出力装置から出力される前記情報信号の供給を受けて、前記情報信号を記録媒体に記録する情報信号記録装置とからなる情報信号複製管理システムであって、
前記情報信号出力装置は、
出力する前記情報信号に識別情報を付加する識別情報付加手段と、
出力する前記情報信号に複製回数を制限するための複製許可回数を付加する複製回数付加手段と、
前記識別情報と前記複製許可回数とが付加された前記情報信号を出力する情報信号出力手段と
を備え、
前記情報信号記録装置は、
供給された前記情報信号から前記識別情報を検出する識別情報検出手段と、
供給された前記情報信号から前記複製許可回数を検出する複製許可回数検出手段と、
前記識別情報検出手段からの前記識別情報と、前記複製回数検出手段からの前記複製許可回数とを対応付けて、各情報信号毎の前記複製許可回数を管理する複製許可回数管理手段と
を備えることを特徴とする情報信号複製制御システム。
【請求項３】
情報信号を出力する情報信号出力装置であって、
出力する前記情報信号に識別情報を付加する識別情報付加手段と、
出力する前記情報信号に複製回数を制限するための複製許可回数を付加する複製回数付加手段と、
前記識別情報と前記複製許可回数とが付加された前記情報信号を出力する情報信号出力手段と
を備えることを特徴とする情報信号出力装置。
【請求項４】
前記識別情報付加手段は、前記識別情報を、電子透かし情報として前記情報信号に重畳するものであり、
前記複製許可回数付加手段は、前記複製許可回数を、電子透かし情報として前記情報信号に重畳するものであることを特徴とする請求項３に記載の情報信号出力装置。
【請求項５】
情報信号を識別するための識別情報と、複製回数を制限するための複製許可回数とが付加された情報信号の供給を受けて、前記情報信号を記録媒体に複製する情報信号記録装置であって、
供給された前記情報信号から前記識別情報を検出する識別情報検出手段と、
供給された前記情報信号から前記複製許可回数を検出する複製許可回数検出手段と、
前記識別情報検出手段からの前記識別情報と、前記複製回数検出手段からの前記複製許可回数とに基づいて、自装置においての各情報信号毎の複製許可回数を管理する複製許可回数管理手段と
を備えることを特徴とする情報信号記録装置。
【請求項６】
前記情報信号記録装置の前記複製許可回数管理手段は、
前記識別情報検出手段からの前記識別情報と、前記複製許可回数検出手段からの前記複製許可回数を管理するための複製回数管理情報とからなる複製履歴情報を記憶するメモリと、
前記情報信号についての前記複製履歴情報の前記複製回数管理情報を、必要に応じて更新する更新手段と
を備えるものであり、
前記情報信号記録装置は、
前記情報信号の複製を行う際に、前記メモリに記憶されている複製しようとする前記情報信号についての前記複製履歴情報に基づいて、複製についての制御を行う複製制御手段を備えることを特徴とする請求項５に記載の情報信号記録装置。
【請求項７】
複製を行う記録装置を特定するための装置識別情報を、複製する情報信号に付加する装置識別情報付加手段を備えることを特徴とする請求項５または請求項６に記載の情報信号記録装置。
【請求項８】
記録媒体に複製された既複製情報信号に付加されている前記装置識別情報を検出する装置識別情報検出手段と、
記録媒体に記録された既複製情報信号を消去する情報信号消去手段と
を備え、
前記情報信号記録装置の前記更新手段は、
情報信号の複製を実行する場合には、前記情報信号についての前記複製回数管理情報により管理される前記複製許可回数を減らすようにし、前記情報信号消去手段により、前記既複製情報信号を消去する場合であって、前記装置識別情報検出手段により検出された前記装置識別情報と、当該情報信号記録装置の機器識別情報とが一致する場合には、前記既複製情報信号についての前記複製回数管理情報により管理される前記複製許可回数を復帰させるようにすることを特徴とする請求項７に記載の情報信号記録装置。
【請求項９】
前記記録媒体に記録する前記情報信号に、次世代の複製を禁止するための情報を付加する次世代複製禁止情報付加手段と、
前記情報信号から次世代の複製を禁止するための情報を検出する次世代複製禁止情報検出手段と
を備え、
前記複製制御手段は、前記次世代複製禁止手段により前記次世代の複製を禁止するための情報が検出されたときには、前記情報信号の複製を禁止するようにすることを特徴とする請求項６、請求項７または請求項８に記載の情報信号記録装置。
【請求項１０】
前記情報信号記録装置の複製許可回数管理手段は、
前記複製許可回数検出手段により、供給された前記情報信号から前記複製許可回数が検出されなかったときには、当該情報信号は、１回だけ複製が可能なものとして当該情報信号の複製許可回数を管理することを特徴とする請求項５、請求項６、請求項７、請求項８または請求項９に記載の情報信号記録装置。
【請求項１１】
前記識別情報と、前記複製許可回数とは、電子透かし情報として前記情報信号に重畳されており、
前記識別情報検出手段は、供給された情報信号に電子透かし情報として重畳されている前記識別情報を検出するものであり、
前記複製許可回数検出手段は、供給された情報信号に電子透かし情報として重畳されている前記複製許可回数を検出するものであることを特徴とする請求項５に記載の情報信号記録装置。
【請求項１２】
前記次世代の複製を禁止するための情報は、電子透かし情報として前記情報信号に重畳されており、
前記次世代複製禁止情報検出手段は、入力された情報信号に電子透かし情報として重畳されている前記次世代の複製を禁止するための情報を検出するものであることを特徴とする請求項９に記載の情報信号記録装置。
【請求項１３】
情報信号を識別するための識別情報と、複製回数を制限するための複製許可回数とが付加された情報信号が記録されていることを特徴とする情報信号記録媒体。
[Claims]
[Claim 1]
The information signal is transmitted by adding the identification information and the number of times of permission for copying to limit the number of times of copying.
In the recording apparatus, the information signal identified by the identification information, information signal duplication control method for controlling recording of the recording medium based on copy permission count of said information signal.
2.
From an information signal output device that outputs an information signal with a limited number of duplications, and an information signal recording device that receives the supply of the information signal output from the information signal output device and records the information signal on a recording medium. Information signal replication management system
The information signal output device is
Identification information addition means for adding identification information to the output information signal, and
A copy count addition means for adding a copy permission count to limit the copy count to the output information signal, and a copy count addition means.
The information signal output means for outputting the information signal to which the identification information and the number of times of permission for duplication are added is provided.
The information signal recording device is
An identification information detecting means for detecting the identification information from the supplied information signal, and
A copy permission number detection means for detecting the copy permission number from the supplied information signal, and a copy permission number detection means.
The identification information from the identification information detecting means is associated with the duplication permission count from the duplication count detecting means, and the duplication permission count management means for managing the duplication permission count for each information signal is provided. An information signal replication control system characterized by.
3.
An information signal output device that outputs an information signal.
Identification information addition means for adding identification information to the output information signal, and
A copy count addition means for adding a copy permission count to limit the copy count to the output information signal, and a copy count addition means.
An information signal output device including an information signal output means for outputting the information signal to which the identification information and the number of times of permission for duplication are added.
4.
The identification information adding means superimposes the identification information on the information signal as digital watermark information.
The information signal output device according to claim 3 , wherein the copying permission number adding means superimposes the copying permission number on the information signal as digital watermark information.
5.
An information signal recording device that replicates the information signal on a recording medium by receiving the supply of the information signal to which the identification information for identifying the information signal and the replication permission number for limiting the number of replications are added. ,
An identification information detecting means for detecting the identification information from the supplied information signal, and
A copy permission number detection means for detecting the copy permission number from the supplied information signal, and a copy permission number detection means.
Based on the identification information from the identification information detecting means and the duplication permission count from the duplication count detecting means, the duplication permission count management means for managing the duplication permission count for each information signal in the own device. An information signal recording device characterized by being provided.
6.
The copy permission number management means of the information signal recording device is
A memory for storing replication history information including the identification information from the identification information detecting means and the replication count management information for managing the replication permission count from the replication permission count detecting means.
It is provided with an updating means for updating the duplication count management information of the duplication history information of the information signal as needed.
The information signal recording device is
When duplicating the information signal, it is characterized by comprising a duplication control means for controlling duplication based on the duplication history information of the information signal to be replicated stored in the memory. The information signal recording device according to claim 5.
7.
The information signal recording device according to claim 5 or 6 , further comprising device identification information adding means for adding device identification information for identifying a recording device to be duplicated to the information signal to be duplicated.
8.
A device identification information detecting means for detecting the device identification information added to the duplicated information signal duplicated on the recording medium, and a device identification information detecting means.
It is equipped with an information signal erasing means for erasing the duplicated information signal recorded on the recording medium.
The updating means of the information signal recording device is
When duplicating the information signal, the number of times the duplication is permitted to be managed by the duplication count management information for the information signal is reduced, and the duplicated information signal is erased by the information signal erasing means. When the device identification information detected by the device identification information detecting means and the device identification information of the information signal recording device match, the replication count management information for the replicated information signal is used. The information signal recording device according to claim 7 , wherein the managed number of times of permission for duplication is restored.
9.
Next-generation duplication prohibition information adding means for adding information for prohibiting next-generation duplication to the information signal recorded on the recording medium, and
It is provided with a next-generation duplication prohibition information detecting means for detecting information for prohibiting next-generation duplication from the information signal.
6. The replication control means is characterized in that, when the information for prohibiting the next-generation replication is detected by the next-generation replication prohibiting means, the replication of the information signal is prohibited . The information signal recording device according to claim 7 or 8.
10.
The copy permission number management means of the information signal recording device is
When the number of times of permission for duplication is not detected from the supplied information signal by the means for detecting the number of times of permission for duplication, the number of times of permission for duplication of the information signal is managed assuming that the information signal can be duplicated only once. The information signal recording device according to claim 5, claim 6, claim 7, claim 8 or claim 9.
11.
The identification information and the number of times the duplication is permitted are superimposed on the information signal as digital watermark information.
The identification information detecting means detects the identification information superimposed as digital watermark information on the supplied information signal.
The information signal recording device according to claim 5 , wherein the duplication permission number detection means detects the duplication permission number of times superimposed as digital watermark information on the supplied information signal.
12.
The information for prohibiting the next-generation duplication is superimposed on the information signal as digital watermark information.
The next-generation copy inhibition information detection means, to claim 9, characterized in that to detect the information for inhibiting duplication of the next generation, which is superimposed as electronic watermark information on the input information signal The information signal recording device described.
13.
An information signal recording medium, characterized in that an information signal to which identification information for identifying an information signal and an number of times of permission for duplication for limiting the number of times of duplication is added is recorded.
【００１６】
【課題を解決するための手段】
上記課題を解決するため、請求項１に記載の発明の情報信号複製管理方法は、
識別情報と、複製回数を制限するための複製許可回数とを付加して情報信号を伝送し、
記録装置において、前記識別情報により前記情報信号を識別し、前記情報信号の複製許可回数に基づいて記録媒体への記録を制御することを特徴とする。
0016.
[Means for solving problems]
In order to solve the above problem, the information signal duplication management method of the invention according to claim 1 is used.
The information signal is transmitted by adding the identification information and the number of times of permission for copying to limit the number of times of copying.
In the recording apparatus, the information signal identified by the identification information, and controls the recording on the recording medium based on copy permission count of said information signal.
また、記録装置において、コピー履歴情報を管理するので、従来からある再生機などは、そのまま用いることができる。例えば、ＣＤ（コンパクトディスク）には、既にＩＳＲＣコードが付加されており、これがコンテンツＩＤとしてデジタルインターフェース（ＩＥＣ９５８）を通じて出力するようにされているので、このＩＳＲＣを用いることによって、各コンテンツ情報を識別し、コンテンツ情報毎にコピー許可回数をコピーを実行する装置側で管理することができる。 Further, since the copy history information is managed in the recording device, a conventional player or the like can be used as it is. E.g., CD to (compact disc) has already been added ISRC code, since this is adapted to output through the digital interface (IEC958) as a content ID, by using the ISRC, identifying each content information However, the number of times the copy is permitted for each content information can be managed on the device side that executes copying.
【０１６５】
【発明の効果】
以上説明したように、請求項５に記載の発明によれば、記録装置毎であって、各情報信号毎に複製回数を制限することができるようにされ、情報信号の著作権者の権利を不当に害することなく、また、情報信号を利用する利用者の利便性を損なうことがないように、情報信号の複製管理を行うことができる。
[0165]
【Effect of the invention】
As described above , according to the invention of claim 5, the number of times of copying can be limited for each information signal in each recording device, and the rights of the copyright holder of the information signal can be obtained. It is possible to manage the duplication of the information signal without unreasonably harming the information signal and without impairing the convenience of the user who uses the information signal.
また、請求項６に記載の発明によれば、各記録装置毎に、各情報信号毎の複製許可回数が管理され、各情報信号毎に、あと何回複製が可能であるかを正確に管理し、複製許可回数に応じて、情報信号の複製制御を適正かつ正確に行うことができる。 Further , according to the invention of claim 6, the number of times of copying permission for each information signal is managed for each recording device, and the number of times more copying is possible for each information signal is accurately managed. However, the duplication control of the information signal can be appropriately and accurately performed according to the number of times the duplication is permitted.
また、請求項７に記載の発明によれば、情報信号に付加された装置識別情報を確認することにより、どの記録装置により複製された情報信号かを確実に識別することができる。また、各記録装置毎に、情報信号毎の複製回数を確実かつ正確に管理することができる。 Further , according to the invention of claim 7, by confirming the device identification information added to the information signal, it is possible to reliably identify which recording device duplicated the information signal. In addition, the number of duplications for each information signal can be reliably and accurately managed for each recording device.
【０１６８】
【０１６８】
また、請求項８に記載の発明によれば、自機により記録媒体に記録した情報信号が消去された場合には、消去された情報信号の複製は行われなかったものとして、複製許可回数が、復帰するようにされるので、複製された情報信号が、当初の複製許可回数分存在するようになるまでは、その情報信号の複製ができるようにされる。これにより、情報信号の利用者の利便性が害されることなく、また、情報信号の複製回数が制限されるので、著作権者の権利を適切に保護することができる。
[0168]
[0168]
Further , according to the invention of claim 8, when the information signal recorded on the recording medium is erased by the own machine, it is assumed that the erased information signal is not duplicated, and the number of times of permission for duplication is increased. Since the information signal is restored, the information signal can be duplicated until the duplicated information signal exists for the initial number of times the duplication is permitted. As a result, the convenience of the user of the information signal is not impaired, and the number of times the information signal is duplicated is limited, so that the rights of the copyright holder can be appropriately protected.
また、請求項９に記載の発明によれば、記録媒体にコピーされた情報信号が、さらにコピーされることはないので、著作権者の権利を不当に害することなく、適切に保護することができる。 Further , according to the invention of claim 9, since the information signal copied to the recording medium is not further copied, it is possible to appropriately protect the rights of the copyright holder without unduly harming the rights. it can.
また、請求項１０に記載の発明によれば、従来からの情報信号についても、著作権者の著作権を不当に害することなく、適切に保護することができる。 Further , according to the invention of claim 10, it is possible to appropriately protect the conventional information signal without unduly harming the copyright of the copyright holder.
また、請求項１１に記載の発明によれば、デジタル情報信号が、アナログ情報信号にＤ／Ａ変換されたり、フィルタリング処理やデータ圧縮処理により、情報信号に電子透かし情報として重畳された識別情報や複製許可回数が消滅するなどのことがないので、識別情報や複製許可回数を確実に情報信号とともに記録装置に提供し、複製許可回数を用いた複製管理を確実に行うことができる。 Further , according to the invention of claim 11 , the digital information signal is D / A converted into an analog information signal, or the identification information is superimposed on the information signal as electronic watermark information by filtering processing or data compression processing. Since the number of times of permission for duplication does not disappear, the identification information and the number of times of permission for duplication can be reliably provided to the recording device together with the information signal, and duplication management using the number of times of duplication permission can be surely performed.
また、請求項１２に記載の発明によれば、次世代の複製を禁止するための情報を確実に情報信号とともに伝送することができるようにされるので、１度複製された情報信号がさらに他の記録媒体に複製されることが防止され、著作権者の権利を適切に保護することができる。 Further , according to the invention of claim 12, since the information for prohibiting the duplication of the next generation can be reliably transmitted together with the information signal, the information signal duplicated once is further different. It is possible to prevent copying on the recording medium of the copyright holder and appropriately protect the rights of the copyright holder.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35249798A JP4045387B2 (en) | 1998-12-11 | 1998-12-11 | Information signal duplication management method, information signal duplication management system, and information signal recording apparatus |
| DE69932695T DE69932695T2 (en) | 1998-12-11 | 1999-12-03 | Technology for data copy control |
| EP99309724A EP1014361B1 (en) | 1998-12-11 | 1999-12-03 | Technique for controlling copying of data |
| EP13180581.4A EP2665062A3 (en) | 1998-12-11 | 1999-12-03 | Technique for controlling copying of data |
| EP04018332.9A EP1473721B1 (en) | 1998-12-11 | 1999-12-03 | Technique for controlling copying of data |
| US09/457,570 US6687802B1 (en) | 1998-12-11 | 1999-12-09 | Outputting apparatus, outputting method, recording apparatus, recording method, reproduction apparatus, reproduction method and recording medium |
| KR1019990056472A KR100666288B1 (en) | 1998-12-11 | 1999-12-10 | Outputting apparatus, outputting method, recording apparatus, recording method, reproduction apparatus, reproduction method and recording medium |
| CNB991278143A CN1150544C (en) | 1998-12-11 | 1999-12-11 | Output device method, recording device method, reproducing device method and recording medium |
| CNB031234909A CN100527244C (en) | 1998-12-11 | 1999-12-11 | Recording device, recording method, reproducing device and method |
| US10/636,900 US7672568B2 (en) | 1998-12-11 | 2003-08-07 | Outputting apparatus, outputting method, recording apparatus, recording method, reproduction apparatus, reproduction method and recording medium |
| US10/752,063 US7159089B2 (en) | 1998-12-11 | 2004-01-06 | Outputting apparatus, outputting method, recording apparatus, recording method, reproduction apparatus, reproduction method and recording medium |
| KR1020060071288A KR100762731B1 (en) | 1998-12-11 | 2006-07-28 | Recording apparatus, recording method, reproduction apparatus, reproduction method and recording medium |
| US11/580,076 US8151071B2 (en) | 1998-12-11 | 2006-10-13 | Copy protection apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35249798A JP4045387B2 (en) | 1998-12-11 | 1998-12-11 | Information signal duplication management method, information signal duplication management system, and information signal recording apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000182321A JP2000182321A (en) | 2000-06-30 |
| JP2000182321A5 true JP2000182321A5 (en) | 2006-01-12 |
| JP4045387B2 JP4045387B2 (en) | 2008-02-13 |
Family
ID=18424484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35249798A Expired - Fee Related JP4045387B2 (en) | 1998-12-11 | 1998-12-11 | Information signal duplication management method, information signal duplication management system, and information signal recording apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4045387B2 (en) |
| KR (1) | KR100666288B1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001095206A1 (en) * | 2000-06-02 | 2001-12-13 | Matsushita Electric Industrial Company, Limited | Recording medium, license management apparatus, and recording and playback apparatus |
| JP2002074831A (en) * | 2000-08-31 | 2002-03-15 | Sony Corp | Method and device for outputting data, method and device for reproducing data, method and device for recording data and method and device for recording and reproducing data |
| JPWO2002080172A1 (en) * | 2001-03-30 | 2004-07-22 | ソニー株式会社 | Recording medium recording or reproducing apparatus and data output control method |
| JP4635367B2 (en) * | 2001-04-16 | 2011-02-23 | ソニー株式会社 | Recording method, recording apparatus, reproducing method, and reproducing apparatus |
| TWI244645B (en) | 2002-01-28 | 2005-12-01 | Sony Corp | Information recording apparatus and method, information reproduction apparatus and method, information recording medium, program storage medium |
| WO2004068351A1 (en) * | 2003-01-30 | 2004-08-12 | Matsushita Electric Industrial Co., Ltd. | Content distribution system |
| JP4606315B2 (en) * | 2005-11-29 | 2011-01-05 | 富士通セミコンダクター株式会社 | Semiconductor device |
| JP4910896B2 (en) * | 2007-06-13 | 2012-04-04 | ソニー株式会社 | Recording apparatus, recording method, and program |
| JP4613212B2 (en) * | 2008-02-18 | 2011-01-12 | 日立コンシューマエレクトロニクス株式会社 | Digital information recording / reproducing apparatus and digital information recording / reproducing method |
| JP2010015225A (en) * | 2008-07-01 | 2010-01-21 | Sharp Corp | Digital content copy device |
| JP4871992B2 (en) * | 2009-12-21 | 2012-02-08 | 日立コンシューマエレクトロニクス株式会社 | Digital information recording / reproducing apparatus and digital information recording / reproducing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH103745A (en) * | 1996-06-12 | 1998-01-06 | Sony Corp | Recording medium, digital copy management method, reproducing device and recording device |
-
1998
- 1998-12-11 JP JP35249798A patent/JP4045387B2/en not_active Expired - Fee Related
-
1999
- 1999-12-10 KR KR1019990056472A patent/KR100666288B1/en not_active IP Right Cessation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4046767B2 (en) | Recording signal copy prevention system | |
| JP2728680B2 (en) | Recording control device | |
| JP2011061845A (en) | Protecting content from illicit reproduction by proof of existence of complete data set using security identifier | |
| TR199701540T1 (en) | Method and device for copying protection of recording media. | |
| US20030074569A1 (en) | Data backup method and storage medium for use with content reproduction apparatus | |
| US20070130074A1 (en) | Devices, systems and methods for restricting use of digital content | |
| JP2000339851A (en) | Information signal duplication control method, information signal recording device, information signal output device, and recording medium | |
| JP4045388B2 (en) | Information signal duplication limiting method, information signal duplication control system, and information signal recording apparatus | |
| JP3941225B2 (en) | Information playback / recording device | |
| JP2000182321A5 (en) | ||
| TW482997B (en) | Recording medium for content data reproduction apparatus therefor | |
| JPH10247362A (en) | Method for preventing duplication of information signal and device therefor | |
| TWI272594B (en) | Recording medium and manufacturing method thereof, reproducing method and reproducing device | |
| JP2000305854A5 (en) | ||
| JP2003134461A5 (en) | ||
| JP4045387B2 (en) | Information signal duplication management method, information signal duplication management system, and information signal recording apparatus | |
| EP1459313A1 (en) | Apparatus and methods for detecting illicit content that has been imported into a secure domain | |
| JP3975308B2 (en) | Information signal reproducing system, information signal reading device, information signal processing device, information signal reproducing method, information signal reading method, and information signal processing method | |
| JP4145797B2 (en) | Apparatus and method for preventing unauthorized copying of digital content | |
| WO2001093264A1 (en) | Recording medium, recording method of recording medium, recording and/or reproducing method of recording medium, and data copy control method | |
| US20020152172A1 (en) | Apparatus and methods for attacking a screening algorithm based on partitioning of content | |
| JP4058573B2 (en) | Recording method, reproducing method, recording apparatus and reproducing apparatus | |
| JP3885324B2 (en) | Data reproduction method, data reproduction system, and drive device | |
| WO2004044821A1 (en) | Creating expiring copies in a check-out/check-in system | |
| CZ20013509A3 (en) | Method of discouraging theft of data containing material, encoding and decoding process and a medium, coder and decoder |