Magnetic recording medium and magnetic write/read method
US6620532B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A patterned magnetic recording medium has clusters (2) in which minimum magnetic reversal units (21) with an intervening nonmagnetic region (3) are equidistantly arranged in longitudinal and transverse directions to form recording tracks, wherein the clusters (2) are arranged at equal intervals in the recording track longitudinal and transverse directions, the distance between two adjacent minimum magnetic reversal units in the longitudinal direction is UL within the cluster and CL between adjacent clusters, satisfying CL>UL, and the distance between two adjacent minimum magnetic reversal units in the transverse direction is UW within the cluster and CW between adjacent clusters, satisfying CW>UW.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.