Patent ID: 11869546
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 9, wherein controlling the amount of power applied to the plurality of heaters in each of the plurality of read/write heads is based on a dual heater power ratio (DHR) of the respective power applied to each of the plurality of heaters of a corresponding read/write head, and wherein the DHR for each read/write head of the data storage device is based at least in part on a corresponding DHRmax and a head additional adjustment (HAA), and wherein,
the controller is further configured to use the same HAA for all read/write heads in a full temperature range, and
the controller is further configured to determine the HAA based on one or more of wafer design, a pole tip recession (PTR) mean value, a near-field transducer protrusion mean value, and a reliability required margin.