Disk drive having fine and coarse control of the read/write head
US4513332A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1982 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Aug 4, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5578
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive having a head actuator that is capable of quick, fine adjustments in position of the transducing head in order to precisely follow data tracks. A magnetic read/write head (2) is mounted on a first arm (4) so that it can move generally along a radius of a disk (8). A rotary motor (12) is used to spin the disk. A primary motor (36) in conjunction with a cable (42) and drum (40) is used to move the arm-mounted head in coarse movements across the disk. A secondary motor (32) in conjunction with a second arm (34) is used to move the arm-mounted head in fine movements across the disk. The primary motor may be used for track jumping, while the secondary motor may be used for track following.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.