Optical data storage and retrieval systems utilizing dual energy sources
US7388825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jun 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24316
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical data storage and retrieval system that includes a phase change storage medium and dual energy sources. The phase change material may store information by undergoing a transformation from one structural state to another structural state through application of energy. The system is equipped with two energy sources, neither of which alone provides sufficient energy to effect the transformation. The combination of both energy sources, however, provides sufficient energy to induce the transformation needed to record information. The energy from either source may be optical, thermal, electromagnetic, mechanical or magnetic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.