JP2001014796A5 - - Google Patents
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- JP2001014796A5 JP2001014796A5 JP1999233446A JP23344699A JP2001014796A5 JP 2001014796 A5 JP2001014796 A5 JP 2001014796A5 JP 1999233446 A JP1999233446 A JP 1999233446A JP 23344699 A JP23344699 A JP 23344699A JP 2001014796 A5 JP2001014796 A5 JP 2001014796A5
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- video
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- 238000001514 detection method Methods 0.000 claims 13
- 230000000875 corresponding Effects 0.000 claims 4
- 230000001276 controlling effect Effects 0.000 claims 3
- 230000002401 inhibitory effect Effects 0.000 claims 2
Claims (7)
蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されているかどうかを検出する暗号化方式検出手段と、蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されていない場合に映像または音声情報に重畳されている少なくとも複製禁止を含む複製管理情報を示す電子透かし情報を検出する電子透かし検出手段と、蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されていない場合には電子透かし検出手段の検出結果によって何らかの複製管理情報が検出された時に映像または音声情報の再生を複製管理情報に従って制御する再生制限手段を有することを特徴とする再生装置。In a playback device that plays back video or audio information recorded on a storage medium,
An encryption method detecting means for detecting whether video or audio information recorded on the storage medium is encrypted by a predetermined encryption method, and encrypting video or audio information recorded on the storage medium by a predetermined encryption method A digital watermark detecting means for detecting digital watermark information indicating duplication management information including at least duplication prohibition superimposed on video or audio information when the video or audio information is not encrypted, A reproduction restricting unit that controls reproduction of video or audio information according to the duplication management information when any duplication management information is detected according to the detection result of the digital watermark detecting unit when the data is not encrypted by the scheme. Playback device.
蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されていない場合に、蓄積媒体に記録された映像または音声情報が電子透かし検出手段において電子透かし情報を検出できるような正規な映像または音声情報であるかどうかを解析する情報解析手段を有し、
蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されていない場合に、情報解析手段によって電子透かし情報を検出できるような正規な映像または音声情報ではないと判定された時に、前記再生制限手段は映像または音声情報の再生を停止することを特徴とする再生装置。The playback device according to claim 1,
When the video or audio information recorded on the storage medium is not encrypted by the predetermined encryption method, the video or audio information recorded on the storage medium is properly formatted so that the digital watermark detection means can detect the digital watermark information. Having information analysis means for analyzing whether it is video or audio information,
If the video or audio information recorded in the storage medium is not encrypted by a predetermined encryption method, the information analysis means when it is determined not to be normal video or audio information can be detected electronic watermark information And a playback device , wherein the playback limiting means stops playback of video or audio information.
入力符号化データが暗号化されているかいないかに従って暗号解読の要・不要を示す暗号解読指定入力手段と、暗号化された入力符号化データを解読してもとの符号化された映像または音声情報を復元する暗号解読手段と、暗号解読手段からの出力と暗号解読手段を用いない出力を切り替える選択手段と、切り替え手段から出力された符号化された映像または音声情報を復号する復号手段と、復号した映像または音声情報に重畳されている少なくとも複製禁止を含む複製管理情報を示す電子透かし情報を検出する電子透かし検出手段とを備え、
暗号解読手段を用いないで入力された符号化された映像または音声情報を直接復号する場合には、電子透かし検出手段によって何らかの複製管理情報が検出された時に映像または音声情報の出力を複製管理情報に従って制御する出力制限手段を有することを特徴とする復号装置。Encoded video or audio information is input, and in a decoding device that decodes this and outputs video or audio information,
Decryption designation input means indicating necessity / unnecessity of decryption according to whether or not input encoded data is encrypted, and original video or audio which is obtained by decrypting encrypted input encoded data and decryption means for restoring the information, decoding means for decrypt and selection means for switching the output using no output and decryption means from decrypting means, the video or audio information encoded been outputs from the switching means If, and an electronic watermark detecting means for detecting the electronic watermark information indicating the duplication management information including at least copy inhibition is superimposed on the decoded video or audio information,
In the case of directly decoding the encoded video or audio information input without using the decryption means, when the digital watermark detection means detects any copy management information, the output of the video or audio information is copied to the copy management information. A decoding device comprising output limiting means for controlling according to the following .
複数の蓄積媒体の種類および蓄積媒体上の記録フォーマットを判別する媒体およびフォーマット判別手段を備え、
前記暗号化方式検出手段は前記複数の蓄積媒体の種類および蓄積媒体上の記録フォーマットそれぞれに対応した暗号方式で暗号化されているかどうかを検出する手段であり、
蓄積媒体に記録された映像または音声情報が、媒体およびフォーマット判別手段で判別された蓄積媒体の種類および蓄積媒体上の記録フォーマットに対応した暗号方式で暗号化されていない場合において、前記電子透かし検出手段の検出結果によって何らかの複製管理情報が検出された時に、再生制限手段は映像または音声情報の再生を複製管理情報に従って制御することを特徴とする再生装置。The playback device according to claim 1,
A medium for determining the type of the plurality of storage media and a recording format on the storage medium, and a format determination unit,
The encryption method detection means is a means for detecting whether or not encryption has been performed using an encryption method corresponding to each of the types of the plurality of storage media and the recording format on the storage medium,
In no event the video or audio information recorded in the storage medium is not encrypted by the encryption system corresponding to the recording format on the type and the storage medium of the storage medium is determined by the media and format discrimination means, said A reproduction apparatus characterized in that when any copy management information is detected based on the detection result of the digital watermark detection means, the reproduction restriction means controls reproduction of video or audio information according to the copy management information .
暗号化された入力符号化データを解読してもとの符号化された映像または音声情報を復元する暗号解読手段と、
入力符号化データの供給装置との間の認証と暗号解読に必要なキー交換を行うＡＫＥ手段と、
暗号解読手段からの出力と暗号解読手段を用いない出力を切り替える選択手段と、
前記選択手段から出力された符号化された映像または音声情報を復号する復号手段と、
復号した映像または音声情報に重畳されている少なくとも複製禁止を含む複製管理情報を示す電子透かし情報を検出する電子透かし検出手段とを備え、
ＡＫＥ手段で認証およびキー交換が成立しない状態で復号を開始した時には、電子透かし検出手段を動作させ、前記電子透かし検出手段によって何らかの複製管理情報が検出された時に、映像または音声情報の出力を複製管理情報に従って制御する出力制限手段を有することを特徴とする復号装置。Encoded video or audio information is input, and in a decoding device that decodes this and outputs video or audio information,
Decryption means for decrypting the encrypted input encoded data and restoring the original encoded video or audio information,
AKE means for exchanging keys required for authentication and decryption with a supply device of input encoded data;
Selecting means for switching between output from the decryption means and output not using the decryption means,
Decoding means for decoding the encoded video or audio information output from the selection means,
And an electronic watermark detecting means for detecting the electronic watermark information indicating the duplication management information including at least copy inhibition is superimposed on the decoded video or audio information,
When decryption is started in a state where authentication and key exchange have not been established by the AKE unit, the digital watermark detection unit is operated, and when any copy management information is detected by the digital watermark detection unit , the output of video or audio information is copied. A decoding device comprising output limiting means for controlling according to management information .
蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されているかどうかを検出する暗号化方式検出ステップと、An encryption method detection step for detecting whether the video or audio information recorded on the storage medium is encrypted by a predetermined encryption method,
前記暗号化方式検出ステップにより蓄積媒体に記録された映像または音声情報が所定の暗号方式で暗号化されていない場合に、映像または音声情報に重畳されている少なくとも複製禁止を含む複製管理情報を示す電子透かし情報を検出する電子透かし検出ステップと、When the video or audio information recorded on the storage medium by the encryption method detection step is not encrypted by a predetermined encryption method, the copy management information includes at least copy prohibition superimposed on the video or audio information. A digital watermark detection step of detecting digital watermark information;
前記電子透かし検出ステップの検出結果によって何らかの複製管理情報が検出された時に、映像または音声情報の再生を複製管理情報に従って制御する再生制限ステップを有することを特徴とする再生方法。A reproduction method comprising a reproduction restriction step of controlling reproduction of video or audio information in accordance with the duplication management information when any duplication management information is detected as a result of the digital watermark detection step.
複数の蓄積媒体の種類および蓄積媒体上の記録フォーマットを判別する媒体およびフォーマット判別ステップを備え、A medium and a format determining step of determining a type of the plurality of storage media and a recording format on the storage medium,
前記暗号化方式検出ステップは前記複数の蓄積媒体の種類および蓄積媒体上の記録フォーマットそれぞれに対応した暗号方式で暗号化されているかどうかを検出するステップであり、The encryption method detection step is a step of detecting whether or not encryption has been performed by an encryption method corresponding to each of the types of the plurality of storage media and the recording format on the storage medium,
前記媒体およびフォーマット判別ステップで判別された蓄積媒体の種類および蓄積媒体上の記録フォーマットに対応した暗号方式で暗号化されていない場合には、映像または音声情報の再生を停止することを特徴とする再生方法。The reproduction of the video or audio information is stopped if the data is not encrypted by the encryption method corresponding to the type of the storage medium determined in the medium and format determination step and the recording format on the storage medium. Playback method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23344699A JP3837974B2 (en) | 1999-04-28 | 1999-08-20 | Playback apparatus and playback method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11-121253 | 1999-04-28 | ||
| JP12125399 | 1999-04-28 | ||
| JP23344699A JP3837974B2 (en) | 1999-04-28 | 1999-08-20 | Playback apparatus and playback method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006084461A Division JP4201010B2 (en) | 1999-04-28 | 2006-03-27 | Decoding device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001014796A JP2001014796A (en) | 2001-01-19 |
| JP2001014796A5 true JP2001014796A5 (en) | 2004-11-25 |
| JP3837974B2 JP3837974B2 (en) | 2006-10-25 |
Family
ID=26458671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23344699A Expired - Fee Related JP3837974B2 (en) | 1999-04-28 | 1999-08-20 | Playback apparatus and playback method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3837974B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3916804B2 (en) * | 1999-07-06 | 2007-05-23 | パイオニア株式会社 | Content recording medium and reproducing apparatus thereof |
| EP1504446B1 (en) | 2002-05-01 | 2011-06-29 | LG Electronics, Inc. | High-density read-only optical disc, and optical disc apparatus and method using the same background of the invention |
| EP1518227B1 (en) | 2002-07-02 | 2013-09-04 | LG Electronics, Inc. | High-density optical disc and method for restricting playback of the high-density optical disc in optical disc apparatus |
| KR101051000B1 (en) | 2003-02-19 | 2011-07-26 | 엘지전자 주식회사 | High Density Optical Discs and the Illegal Copy Determination Method |
| JPWO2005008659A1 (en) * | 2003-07-23 | 2006-09-07 | 松下電器産業株式会社 | Data processing device |
| JP2008299959A (en) * | 2007-05-31 | 2008-12-11 | Toshiba Corp | Device and method for reproduction |
| JP5129053B2 (en) * | 2007-07-27 | 2013-01-23 | パナソニック株式会社 | Content reproduction apparatus, content reproduction method, content reproduction program, and integrated circuit |
| JP5040955B2 (en) * | 2009-05-14 | 2012-10-03 | 株式会社日立製作所 | Information output apparatus and information output method |
-
1999
- 1999-08-20 JP JP23344699A patent/JP3837974B2/en not_active Expired - Fee Related
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