| Original document(23 pages) 中文版 |
In order to reproduce data scrambled in respective manners to recordable recording medium, it is necessary to take the step of discriminating if the reproduction signal comes from any recording medium before descrambling the data. Further, before doing the control, it is necessary to discriminate if the data is copy-permitted or copy-prohibited. A data recording and reproducing apparatus includes a first reproducing unit, a second reproducing unit for receiving the data processed by the first reproducing unit and executing the next reproducing process about the data, a first authenticating unit for authenticating the first reproducing unit, a second authenticating unit positioned in correspondence with the first authenticating unit and for authenticating the second reproducing unit. |
Application Number
申请号 |
200610095935 |
Application Date
申请日 |
1999.04.14 |
| Title 名称 |
Distinguishing method, data processing device and deciphering device |
Publication Number
公开号 |
1913612 |
Publication Date
公开日 |
2007.02.14 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
H04N5/765;H04N5/913;G11B20/00 |
Applicant(s) Name
申请人 |
Hitachi Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Kawamae Osamu;Takeuchi Toshifumi;Kimura Hiroyuki;Arai Takao;Yoshiura Hiroshi |
| Attorney & Agent 代理人 |
chen jingjun |
| More information 更 多 信 息 |
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