Optical recording medium and recording method therefor
US6507557B1 · kind B1 · utility
25Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The pattern (104) of a desired character or design can be displayed visibly in an information recording area of an optical recording medium by utilizing the interference phenomenon of the reflected light (200a, 200b), which is caused by the different track pitch (P2, P3) from the standard track pitch (P1), wherein the different track pitch (P2, P3) is applied to some part of tracks (103) corresponding to the desired pattern (104) to be displayed visibly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.