US 12,431,161 B1
Data storage device with track pitch determination for mitigating effects of servo pattern distortion
Hideki Zaitsu, Fujisawa (JP); So Ogiwara, Fujisawa (JP); Yoshio Soyama, Fujisawa (JP); Kei Yasuna, Fujisawa (JP); and Shuji Nishida, Fujisawa (JP)
Assigned to WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US)
Filed by WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US)
Filed on Mar. 27, 2024, as Appl. No. 18/617,883.
Int. Cl. G11B 5/55 (2006.01); G11B 5/596 (2006.01); G11B 19/04 (2006.01); G11B 20/10 (2006.01)
CPC G11B 5/59672 (2013.01) [G11B 5/5539 (2013.01); G11B 19/045 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A data storage device comprising:
a disk;
a head actuated over the disk; and
one or more processing devices, individually or in combination, configured to:
determine an initial track pitch based on a performance metric determined for the head;
determine a track pitch adjustment based on a measure of servo pattern distortion associated with a region of the disk; and
set a final track pitch for the region of the disk based on the track pitch adjustment and the initial track pitch.