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:
Feb. 04, 2014
Filed:
Feb. 22, 2012
Yoshihiro Shiroishi, Hachioji, JP;
Hiroshi Fukuda, Tokyo, JP;
Ikuya Tagawa, Hiratsuka, JP;
Tomohiro Okada, Odawara, JP;
Yoshihiro Shiroishi, Hachioji, JP;
Hiroshi Fukuda, Tokyo, JP;
Ikuya Tagawa, Hiratsuka, JP;
Tomohiro Okada, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic storage apparatus includes a magnetic recording medium, a microwave assisted magnetic recording head at least equipped with a magnetic recording pole that generates a recording magnetic field for writing to the magnetic recording medium and a high-frequency oscillator that generates a high-frequency field, a magnetic reproducing head that reads information from the magnetic recording medium, a signal processing unit that processes a signal written by the magnetic recording head and a signal read by the magnetic reproducing head and a unit that controls clearance between the high-frequency oscillator and the magnetic recording medium. The magnetic storage apparatus has a characteristic that the high-frequency oscillator is not operated except in recording.