Controlling track density in storage discs
US9324366B1 · kind B1 · utility
2Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Apr 1, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1242
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Devices including at least one storage disc having a recording surface segmented into a plurality of radial zones, each radial zone having an inner diameter and an outer diameter, each of the plurality of zones having a plurality of concentric tracks; and a track density ramp ratio assigned to each of the plurality of zones, where the track density ramp ratio describes an increase in the track density from the inner diameter of the zone to the outer diameter of the zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.