Optical disk recording method and apparatus
US6920095B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Jun 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
OPC data record in an optical disk is performed at a plurality of record velocities to obtain a maximum record velocity Vlmax. A rotation number of the optical disk is calculated and set, the rotation number being determined in such a manner that the maximum record velocity Vlmax becomes equal to a linear velocity of the optical disk at a detected record position of the optical disk along the radial direction. The optical disk is rotated under a rotation control that a detected actual revolution number of the optical disk becomes equal to the calculated and set rotation number. It is monitored to check whether the record operation of the optical disk at the maximum record velocity Vlmax is normal. If it is detected that the record operation may become abnormal, the maximum record velocity is lowered by Δv1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.