Patent ID: 11862213
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A magnetic disk device comprising:
a disk that has a track comprising a first servo sector and a second servo sector that is different from the first servo sector;
a head that writes data to the disk and reads data from the disk; and
a controller that records first signal strength record data related to a signal strength at which first target servo data that is a target of the first servo sector is read, and standardizes first signal strength data related to a signal strength at which the first target servo data is read when the first target servo data is read,
wherein
the controller records second signal strength record data related to a signal strength at which second target servo data that is a target of the second servo sector is read, calculates first averaged signal strength record data in which the first signal strength record data and the second signal strength record data are averaged when the first target servo data is read, calculates first averaged signal strength data in which the first signal strength data and the second signal strength data related to a signal strength at which the second target servo data is read are averaged, and standardizes the first averaged signal strength data to first averaged standardized data based on the first averaged signal strength record data.