Method and apparatus for controlling access to storage media
US7660415B2 · kind B2 · utility
2Cited by
299References
9Claims
0Family size
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24612
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for controlling access to a storage medium, such as an optically readable medium. Light sensitive or other materials that are adapted to change state and affect reading of a storage medium are used to control access to data that may be stored on optical medium and/or to control use of the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.