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:
May. 21, 2002
Filed:
Mar. 25, 1998
Mitsumasa Oshiki, Kawasaki, JP;
Seiya Ogawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A magnetic recording method using a magnetic head to record information in an information recording medium and read the information recorded on the information recording medium is such that the temperature of a portion of the information recording medium on or from which information is recorded or read is changed in order to record or read information. A disk device having the ability to record and read information comprises a magnetic head for recording information by applying a given magnetic field to an information recording medium and reading the information from the information recording medium; and a temperature changing mechanism for changing the temperature of a portion of the information recording medium on or from which information is recorded or read. The magnetic head is moved to the portion of the medium in which a temperature change is produced by the temperature changing mechanism, whereby information is recorded or read.