Device and method for optical data storage having multiple optical states
US6115344A · kind A · utility
10Cited by
4References
38Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 20, 1997 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Nov 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C13/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The optical storage device and method includes a fluorescent layer arranged on a substrate and having a surface. The fluorescent layer is composed of fluorescent dye molecules embedded in a transparent polymeric base material. A group of data-carrying structures are arranged in the fluorescent layer. Each of the data-carrying structures has more than two optical states represented by a specific degree of quenching of fluorescence emitted from the data-carrying structure when irradiated with a fluorescence exciting radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.