Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track
US4803572A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 20, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic disk unit for recording/reproducing data onto/from a disc by means of a magnetic head on the basis of a seek command and a recording/reproducing command received from a host processor, the execution of the data reproducing command for the disk is started upon detection of a state that the magnetic head has sought on a desired track to an extent that the centering state is still unstable but the data can be reproduced, and the execution of the data recording command is started upon detection of a condition that the magnetic head has reached the stable centering state on the desired track after the detection of the reproducible state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.