Disk drive comprising a dual read element and delay circuitry to improve read signal
US8139301B1 · kind B1 · utility
207Cited by
24References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2009 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk having a plurality of data tracks, and a head actuated over the disk, the head comprising a first read element and a second read element. A data track is read to generate a first read signal emanating from the first read element and a second read signal emanating from the second read element. The first read signal is delayed relative to the second read signal to generate a delayed read signal, and the second read signal is combined with the delayed read signal to generate a combined read signal. An estimated data sequence is detected from the combined read signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.