Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit
US8325917B2 · kind B2 · utility
1Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2006 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Dec 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91335
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data generating device is capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing device obtains restoration information and, in accordance with the restoration information, selectively performs predetermined restoration processing and processing of embedding device unique information, on content data at a position shown by the restoration information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.