Patent ID: 11948603
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. The data storage device of claim 1, wherein the first mode comprises a pulse width modulation (PWM) mode, and wherein the second mode comprises a linear or current control loop (CCL) mode, and wherein the one or more processing devices are further configured to:
select the first setting;
select the second setting, wherein the second setting is applied to the first VCM after the first setting;
determine a PWM change time, wherein the PWM change time corresponds to a time at which the first VCM transitions from the first to the second setting for the PWM mode;
monitor a first track arrival position error signal (PES), the first track arrival PES corresponding to a PES after a first calibration seek using the first setting, the second setting, and the PWM change time, and after the third duration is complete;
update one or more of the first setting, the second setting, and the PWM change time;
monitor a second track arrival PES, the second track arrival PES corresponding to a PES after a second calibration seek using one or more of the updated first setting, the updated setting, and the updated PWM change time, and after the third duration is complete; and
compare the first and the second track arrival PES to determine an optimal PWM change time and optimal first and second settings for the PWM mode.