Simultaneous bit pattern determination and head positional information detection on patterned media
US7948708B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2009 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Apr 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, and method comprise a magnetoresistive head configured to respond to magnetization states of patterned cells formed on a patterned medium. The magnetoresistive head detects the magnetization states of at least two patterned cells formed on a patterned medium. The magnetoresistive head generates a readback signal based on the magnetization state of the at least two patterned cells. A detector circuit coupled to the head determines a bit pattern corresponding to the readback signal. A processor circuit coupled to the detector circuit determines positional information associated with the magnetoresistive head relative to the at least two patterned cells based on the bit pattern. The system further comprises a patterned medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.