Embedded track information for patterned media
US7835094B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2008 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/855
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bit-patterned magnetic media (BPM) includes with respect to each data track regular bit-islands having a first size and large bit-islands having a second size. The placement of the regular bit-islands and large bit-islands within each data track results in a unique pattern. An amplitude-modulated readback signal is generated in response to a transducer head moving over the bit-patterned media. Based on the amplitude-modulated readback signal, channel response circuitry detects the pattern of regular bit-islands and large bit-islands associated with a particular data track. Based on the detected pattern, the channel response circuitry is able to uniquely identify the data track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.