Method and apparatus for estimating and controlling the...

Details Method and apparatus for estimating and controlling the... Method and apparatus for estimating and controlling the...

2007-10-09

2007-10-09

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11331487

ABSTRACT:
Method estimating flying height of read-write head in slider near rotating disk surface. Sensing leakage current between slider and spindle motor to create potential difference measurement. Converting potential difference measurement to create estimate of flying height. Method controlling flying height using method for estimating by adjusting vertical actuation signal to micro-actuator assembly. Embodiments implement these methods. Embedded circuit and hard disk drive, each including the apparatus. The invention includes methods of manufacturing and their products.

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