Patent ID: 7206160
Filing Date: 2007-04-17
Classification: G11B

Abstract:
1. A method controlling a read-write head coupled with a micro-actuator assembly in a hard disk drive, comprising the steps: controlling a flying height of said read-write head off a rotating disk surface using a Direct Current (DC) line and a ground line, both electrically coupled with said micro-actuator assembly; and controlling a lateral position of said read-write head over said rotating disk surface, using an Alternating Current (AC) line, said ground line and said DC line; wherein the step controlling said flying height further comprises the steps: applying a high DC voltage to said DC line relative to said ground line to induce said micro-actuator assembly to position said read-write head within said flying height off said rotating disk surface; and applying a near-zero DC voltage to said DC line relative to said ground line to induce said micro-actuator assembly to position said read-write head above said flying height off said rotating disk surface.