Magnetic disk device and read control method
US8982496B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2014 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jul 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, switching takes place between a first control in which a first read head is assigned as a master head for reading data from a magnetic disk on which a sequential write direction is reversed at a switching position where a skew angle of a write head becomes 0 and between an outer periphery and an inner periphery in shingled write recording, and a second read head is assigned as a slave head for reducing inter-track interference during reading of the data and noise by virtue of an effect of waveform averaging with respect to the master head, and a second control in which the second read head is assigned as the master head and the first read head is assigned as the slave head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.