US 12,094,503 B1
Continuous frequency servo in a data storage device
Guoxiao Guo, San Jose, CA (US); Jason Laks, San Jose, CA (US); Charles A. Park, San Jose, CA (US); Scott A. Ottele, San Jose, CA (US); and Gary Herbst, San Jose, 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. 3, 2023, as Appl. No. 18/364,759.
Claims priority of provisional application 63/508,796, filed on Jun. 16, 2023.
Int. Cl. G11B 5/55 (2006.01)
CPC G11B 5/5547 (2013.01) 20 Claims
OG exemplary drawing
 
1. A data storage device, comprising:
a storage medium comprising a plurality of servo sectors defining a plurality of servo tracks, wherein a plurality of adjacent servo tracks is configured with continuously varying frequencies across the plurality of adjacent servo tracks;
a head actuated over the storage medium for reading the plurality of servo tracks; and
a control circuitry configured to:
determine, based on a radial position of a target servo track, a target track frequency from among the continuously varying frequencies;
set a channel frequency to the target track frequency; and
follow, using the target track frequency, the target servo track.