Method and apparatus for writing data in a disk drive
US6535470B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Dec 25, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit records data on an optical disk while the disk is rotated at a constant angular velocity. A velocity detector determines a velocity of a rotating disk as a detected velocity. A memory stores sets of write signal control values, and each set of write signal control values is associated with a predefined velocity. A control circuit retrieves at least two sets of write signal control values based on the detected velocity and selected predefined velocities of the sets of write signal control values. A write strategy circuit generates one or more write signals in accordance with the write signal control values of the selected set and write data. The control circuit designates a selected set of write signal control values from the at least two sets of write signal control values while generating the one or more write signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.