Floppy disk unit
US4644419A · kind A · utility
16Cited by
5References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 30, 1986 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Apr 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A floppy disk unit has a motor drive mechanism and a data read/write circuit, a control means which changes the speed of rotation of motor and the electrical characteristics of the read/write circuit in accordance with the characteristic of the disk used and thereby the disks to be used with different speeds of rotation can be used in the same floppy disk unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.