Self-calibration for computer disk read/write offsets
US5500776A · kind A · utility
56Cited by
8References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1993 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Dec 16, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5565
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For disk drives having dual element heads, an invention for providing self-calibration of hard-disk writer elements to reader elements offsets. A method is provided for positioning a reader element for reading information on a disk, and from the information read, determining a reference line for the writer element. The method may be incorporated into a hard-disk in the form of a self-calibration routine in memory. The self-calibration routine may be used for computing offsets for separate writer/reader elements in a dual head assembly. Also, apparatus are provided for self-calibration of hard-disk writer to reader element offsets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.