Method for recording bursts on a disk and related apparatus
US7450328B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | May 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention provide a method for recording bursts on a disk and a related apparatus. In accordance with an embodiment of the invention, a method for recording bursts on a burst field of a servo sector of a disk comprises generating a first write current corresponding to burst data provided by a write channel circuit, and generating a second write current having a higher frequency than the first write current using a high frequency AC current generator, wherein the high frequency AC current generator is independent from the write channel circuit. The method further comprises selectively applying the first write current to a write head in response to a signal and selectively applying the second write current to the write head in response to the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.