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:
Apr. 02, 2013
Filed:
Aug. 28, 2008
Applicants:
Haruo Kawakami, Miura, JP;
Yasushi Ogimoto, Higashiyamato, JP;
Eiki Adachi, Sagamihara, JP;
Inventors:
Assignee:
Fuji Electric Co., Ltd., Kawasaki-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 2005/3996 (2006.01); G11B 5/012 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for driving a spin valve element, including passing driving current through the spin valve element to generate an oscillation signal, and performing amplitude modulation of the driving current at a frequency lower than the oscillation frequency of oscillation signals. This amplitude modulation can be ON-OFF modulation, and the interval tin the conducting state of the ON-OFF modulation is made to satisfy the relation t<D/α, where α is the thermal diffusivity of the heat diffusion portion, and D is the thickness of the heat diffusion portion.