Unauthorized contents detection system
US8261084B2 · kind B2 · utility
21Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99942
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing device for playing back a digital work reduces the processing load involved in verification by using only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the data processing device improves the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.