The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1999
Filed:
Sep. 18, 1997
Morimi Hashimoto, Wako, JP;
Tsutomu Shiratori, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.