Rewritable optical recording medium and manufacturing method and apparatus therefor
US6837072B2 · kind B2 · utility
0Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Jun 2, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rewritable optical recording medium includes a segmented groove area in which the groove track is segmented along a rotating direction of the recording medium by groove non-forming portions to form a plurality of groove portions; and a continuous groove area in which a continuous groove is formed, the continuous groove having a groove width smaller than a groove width in the segmented groove area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.