Recording density variation of data tracks
US9111578B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2014 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for recording density variation of data tracks. In some embodiments, an apparatus may comprise a circuit configured to record data to a first track of a data zone at a first recording density, and record data to a second track of the data zone at second recording density different from the first recording density. Recording density may be measured as a bits per inch (BPI) value for a data track. Different recording densities may be applied based on a width of the target track. In some embodiments, such as for shingled magnetic recording (SMR), data may be recorded to partially overlapped tracks at a first density, and to non-overlapped tracks at a second density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.