Optical disc having RFID tag, optical disc apparatus, and system for preventing unauthorized copying
US7317396B2 · kind B2 · utility
137Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 2005 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Nov 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an optical disc having an RFID tag, disc control information needed for control of reproduction of the content recorded in the disc body of the optical disc is stored in the RFID tag. Thereby, even if the content recorded in the disc body is illegally copied in some way, common optical disc apparatus incapable of reading RFID tags cannot read and copy the disc control information stored in the RFID tag. Accordingly, unauthorized copying of the content recorded on the optical disc can be reliably prevented without the use of special cryptographic technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.