US 12,230,296 B2
Magnetic recording/reproducing device
Takuya Matsumoto, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Sep. 5, 2023, as Appl. No. 18/461,140.
Claims priority of application No. 2023-044459 (JP), filed on Mar. 20, 2023.
Prior Publication US 2024/0321293 A1, Sep. 26, 2024
Int. Cl. G11B 5/54 (2006.01); G11B 5/02 (2006.01); G11B 5/09 (2006.01); G11B 5/00 (2006.01)
CPC G11B 5/02 (2013.01) [G11B 2005/0024 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic recording/reproducing device comprising:
a magnetic recording medium;
a plurality of assisted magnetic recording heads; and
a processor configured to write data onto the magnetic recording medium according to a first type of magnetic recording or a second type of magnetic recording and select one of the assisted magnetic recording heads for recording based on at least one of assist power and application time of the assist power when assisted magnetic recording is performed, wherein
in response to receiving a first write command that is to be carried out according to a shingled magnetic recording method with an assisted magnetic recording head having a first write operation lifetime index value, the processor changes the assisted magnetic recording head to one of the assisted magnetic recording heads having a second write operation lifetime index value higher than the first write operation lifetime index value, and
in response to receiving a second write command that is to be carried out according to a conventional magnetic recording method with the assisted magnetic recording head having the first write operation lifetime index value, the processor changes the assisted magnetic recording head to one of the assisted magnetic recording heads having a third write operation lifetime index value higher than the second write operation lifetime index value.