Guided servo writing for data storage media
US6795267B2 · kind B2 · utility
2Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Dec 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention presents techniques for marking data storage media and responding to disturbances in the marking process. In one embodiment, the invention presents a system that uses a laser to emit a beam to ablate physical marks in a data storage medium. The system includes a sensor such as an optical sensor, configured to detect the position of the data storage medium and to generate a position signal as a function of the position of the data storage medium. An optical device, controlled by an actuator, directs the beam from the laser to an ablation site on the data storage medium as a function of the position signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.