Optical information recording medium and method of manufacturing the same
US7682679B2 · kind B2 · utility
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3References
3Claims
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Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/248
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dye or dyes are selected, which are capable of absorbing a laser beam with a wavelength of 350 to 500 nm and are capable of recording sub-information using a laser beam with a wavelength of 640 to 680 nm or 750 to 830 nm. An optical information recording medium including the optical recording layer records sub-information (BCA information) of a type different from that of main information (data information) in a sub-information region (a BCA recording region) different from a main information area (a data area) using a laser beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.