Optical medium aligned information system and method
US7596069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Jun 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/24038
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Separate sets of optical medium identification information are embedded in separate aligned layers of the optical medium to allow an optical drive to initiate use of the optical medium with information from both layers. For instance, a first set of identification information is embedded in the data layer of the optical medium and a second set of identification information is embedded on the protective surface layer of the optical medium. The first and second sets of information align so that a mixed signal is provided when the optical medium is initially inserted in the optical drive with the optical drive reading the separate sets of information while the read head is at a single location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.