Information recording apparatus, recording media and recording method
US7349319B2 · kind B2 · utility
0Cited by
5References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 26, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Dec 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording apparatus includes a multilayer information recording medium having a first layer containing an electro-chromic material, an electrode layer applying a voltage to the first layer to color the first layer, a second layer containing an electro-chromic material, a unit for applying the voltage to the first layer, a first optical irradiating unit for irradiating a first optical spot onto the first layer, and a second optical irradiating unit for irradiating a second optical spot onto the second layer after irradiating the first optical spot onto the first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.