Configuration of three-dimensional features in data recording structures
US7102991B2 · kind B2 · utility
1Cited by
31References
27Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Jun 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Improvements in the shape of three-dimensional features displayed in optical recording structures, particularly in such structures displaying features of differing dimensional characteristics. The shape improvements include reductions in berm height and width, dual level data marks and tracking guides, and land areas projecting above or into the surface of the recording structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.