Track-dependent transducer position control in magneto-dynamic storage devices, and a magnetic recording medium to which this method is applicable
US4157576A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1977 |
| Grant date | Jun 5, 1979 |
| Priority date | — |
| Expiry date | Aug 2, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a system for recording and/or reproducing data signals on a magnetic recording medium, more particularly a new improved transducer locating system. The magnetic transducer is provided with an air gap for the data track and a second air gap for the reference track which latter is formed on a recording medium as a transition line between regions of varying magnetization and arranged within, or laterally of, the data track. As the transducer deviates from its desired track position, a correction signal is produced which is fed to a locating device to which the transducer is fitted, in order to adjust the position of the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.