Magnetic head tracking control system
US4287538A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Sep 6, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/588
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an apparatus for reproducing video or other information signals recorded in successive parallel tracks extending obliquely on a magnetic tape or other record medium which is adapted to be longitudinally advanced, a magnetic head or transducer is movable in the direction generally along the tracks for reproducing the signals recorded therein and is mounted or supported by a bi-morph leaf or other transducer deflecting device which is operative, in response to the reception of an electrical drive signal, for deflecting the transducer or head in a direction transverse to the direction along the tracks so as to follow a desired one of the tracks in moving from one end to the other end of such desired track, a first signal is produced in correspondence to the deflection of the transducer deflecting device needed to cause the transducer to follow the desired track at a predetermined position therealong, and a second signal is produced in correspondence to the following value: ##EQU1## in which n is the ratio of the tape speed during reproducing to the tape speed during recording, d is percentage of the distance along each of the tracks from said one end thereof to said predetermined p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.