Methods and systems for self-servo-writing including writing positioning and timing bursts at different track pitches
US6005738A · kind A · utility
20Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Apr 1, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for self-servowriting a data storage medium are disclosed, including servoing to propagation bursts of a propagation pattern located in tracks other than an immediately preceding track. Reference levels used to position a recording head are accordingly kept in a usable dynamic range necessary to keep servo track spacing constant across the medium. The methods and systems are disclosed in connection with a rotary actuator having spaced read and write heads. Similar methods are disclosed for writing trigger or timing bursts of the propagation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.