Magnetic head positioning servo arrangement for a system for recording/reproducing information on a magnetic recording medium, particularly on a flexible magnetic recording medium
US4346413A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1980 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Jun 17, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head positioning servo arrangement for a system for recording or reproducing information on a flexible magnetic recording medium, the position of the head being adjustable, relative to the magnetic tracks of the recording medium, by means of an actuator, and each magnetic track being provided with at least one reference signal which, when sensed, provides information about the momentary position of the head and, in the case of mistracking, generates in a comparator circuit a control signal for the actuator which moves the magnetic head back over the center of the track, the reference signal consisting of at least one pair of pulse sequences which are recorded asymmetrically with respect to the center of the track and which, when sensed, produce increasing or decreasing signal pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.