US 12,266,386 B2
Data storage device with rapid in-field repeatable runout noise removal calibration
Sandy Xianghui Xiao, San Diego, CA (US); and Noureddine Kermiche, Dana Point, CA (US)
Assigned to WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US)
Filed by WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US)
Filed on Aug. 9, 2023, as Appl. No. 18/232,031.
Claims priority of provisional application 63/447,798, filed on Feb. 23, 2023.
Prior Publication US 2024/0290348 A1, Aug. 29, 2024
Int. Cl. G11B 5/55 (2006.01); G11B 5/60 (2006.01); G11B 20/24 (2006.01)
CPC G11B 5/5586 (2013.01) [G11B 5/6029 (2013.01); G11B 20/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A data storage device, comprising:
one or more disks;
an actuator mechanism configured to position a selected head among one or more heads proximate to a corresponding disk surface among the one or more disks; and
one or more processing devices configured individually or in combination to:
detect repeatable runout (RRO) noise components from a measurement of fly height of the selected head above one or more sectors of a fly height measurement track; and
remove the detected RRO noise components from one or more per-sector readback signal measurements.