Apparatus, system, and method for controlling recording head...

Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing

Reexamination Certificate

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CG9BS005031

Reexamination Certificate

active

07742252

ABSTRACT:
An apparatus, system, and method are disclosed for dynamically controlling a recording head substrate bias voltage. The apparatus includes a midpoint module and a substrate module. The midpoint module calculates a midpoint voltage of a plurality of data read elements and servo read elements contained in the head. The substrate module calculates a substrate bias voltage. The apparatus, system, and method dynamically control the substrate bias voltage post-assembly, minimizing certain head degradations and extending the life of associated head readers.

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