US 12,469,520 B2
Magnetic recording device and magnetic recording system
Yousuke Isowaki, Yokohama Kanagawa (JP); and Kenichiro Yamada, Minato Tokyo (JP)
Assigned to Kabushiki Kaisha Toshiba, Kawasaki (JP); and Toshiba Electronic Devices & Storage Corporation, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo (JP)
Filed on Dec. 16, 2024, as Appl. No. 18/982,619.
Claims priority of application No. 2024-007504 (JP), filed on Jan. 22, 2024.
Prior Publication US 2025/0239277 A1, Jul. 24, 2025
Int. Cl. G11B 5/09 (2006.01); G06F 11/10 (2006.01); G11B 7/13 (2012.01); G11B 27/36 (2006.01)
CPC G11B 27/36 (2013.01) 20 Claims
OG exemplary drawing
 
1. A magnetic recording device, comprising:
a magnetic recording medium;
a plurality of magnetic heads configured to record information on the magnetic recording medium; and
a controller configured to control the plurality of magnetic heads,
each of the plurality of magnetic heads including:
a coil,
a first magnetic pole configured to generate a magnetic field according to a recording current supplied to the coil, and
a light emitting section configured to irradiate the magnetic recording medium with light to locally increase a temperature of the magnetic recording medium,
the controller being configured to perform a first operation,
in the first operation, the controller being configured to calculate a lifetime information related to a remaining life time of one of the plurality of magnetic heads based on a first information related to a failure probability of a magnetic head group including the plurality of magnetic heads and a second information related to a remaining time based on a history of the one of the plurality of magnetic heads.