Information reproducing method and apparatus for reproducing information by moving magnetic wall
US5966348A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Sep 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for reproducing information by enlarging a magnetic domain on a medium by moving a magnetic wall. The apparatus includes a heating device for partially heating the medium in order to cause movement of the magnetic wall, and a magnetic head for detecting a leakage magnetic field generated in association with movement of the magnetic wall, wherein the information is reproduced on the basis of a detection result of the magnetic head. The medium is made up of a layer in which the magnetic wall moves, an intermediate layer, and a layer in which information is accumulated. The magnetic head is arranged on the layer side where the magnetic wall moves. The heating device is arranged on the side of the layer in which information is accumulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.