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:
Jun. 19, 2018
Filed:
Aug. 18, 2017
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Yoshihiro Amemiya, Chigasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a magnetic disk device includes a disk, a head configured to write data to the disk, and an integrated circuit configured to acquire a detection signal indicative of a first pattern of a first frequency of write data, change a first current of a second pattern of a write current corresponding to the first pattern on the basis of the detection signal, detect a third pattern of a second frequency which is greater than the first frequency from the write data, change a second current of a fourth pattern of the write current corresponding to the third pattern, and output the write current with the changed first current and the changed second current to the head.