Optical recording medium and reproducing method therefor
US5604002A · kind A · utility
15Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Mar 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium includes a recording layer, and a masking layer which is converted to a state having small absorption at the wavelength of a reproducing beam due to progress of decoloration caused by a thermal reaction upon irradiation with the reproducing beam, or due to facilitation of decoloration caused by a photon mode photochromic reaction through temperature rise upon irradiation with the reproducing beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.