Track positioning arrangement in a head wheel for a recorder
US5034829A · kind A · utility
7Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Apr 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/1808
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rotating head wheel for a recorder wherein the head wheel is additionally displaceable in the direction of its axis of rotation. The displacement is produced by mounting the head wheel on a threaded spindle which rotates in the same direction as the head wheel and whose rate of rotation is variable. A first sensor generates a pulse each revolution of the head wheel. A second sensor generates a pulse each revolution of the threaded spindle. The pulses of the first and second sensors and a pulse produced by a position sensor are used for controlling the magnitude of the displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.