Magnetic storage apparatus employing flexible record disks with peripheral disk-identification means
US3974524A · kind A · utility
7Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Apr 14, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/553
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stack of flexible record disks is peripherally accessed following a peripheral identification procedure. A magnetic sensing means disposed in close proximity to the outer circumference of the stack senses a magnetic record track on the respective disk for identifying axial position such that the record surface of a predetermined disk can be accessed. For example, one of a plurality of frequencies particularly identify a disk within a group of disks. A given storage apparatus may have a plurality of such groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.