Method and apparatus for sensing and controlling the flying height of a read-write head in a hard disk drive
AssigneeSamsung Electronics Co., Ltd.
InventorsHaesung Kwon, Vinod Sharma, Hyung Lee
Life of this patent
Estimating the term…
Abstract
A slider, flexure finger, head suspension assembly, head gimbal assembly, main flex circuit, actuator assembly, spindle motor, embedded circuit, and hard disk drive using and/or supporting method of estimating flying height of read-write head near rotating disk surface. Method senses leakage current between slider and spindle motor to create potential difference measurement, and converts 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. The invention includes methods of manufacturing and their products.
Claims31
A slider, comprising:
- a terminal for use in measuring said leakage current for estimating the flying height of a read-write head in said slider near a rotating disk surface included in a hard disk drive;
- wherein said leakage current between said slider and a spindle motor electrically coupling through a spindle to said rotating disk surface.
A method of manufacturing said flexure finger, comprising the step:
- forming said signal path included in said flexure finger.
Dependencies are inferred from the claim text.