Optical-disk recording method, recording apparatus and reproducing apparatus
US7706233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2003 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Dec 5, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical-disk recording method, recording apparatus and reproducing apparatus are provided which are capable of continuously recording/reproducing a hologram with ultra-high density. In the case of recording a hologram to a holographic recording area, a holographic recording spot HSP on one track of the holographic recording area and a holographic recording spot HSP on a track adjacent thereto are recorded in circumferentially different positions. At least one holographic recording spot HSP is formed on each track, making the process continuous. Recording is made such that, provided that the holographic recording spot HSP has a diameter D and a multiplex number of holographic recording spots HSP is m, a pitch P between adjacent holographic recording spots HSP is P=D/m. Consequently, it is possible to efficiently record a hologram with density to a holographic recording area of an optical disk recording medium, and to achieve the density increase of holographic recording capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.