Patent ID: 6541931
Filing Date: 2003-04-01
Classification: G11B

Abstract:
A method of positioning a read/write head in a data storage device having a voice coil suitable for coarse control and a piezoelectric transducer (PZT) suitable for fine control, the method comprising steps of:(a) receiving a position-indicative signal from the read/write head; (b) generating a voice coil control signal and a PZT control signal from the position-indicative signal; (c) powering the voice coil and the PZT via a first shared voltage source having a nominal DC voltage V1; and (d) applying the voice coil control signal to the voice coil and the PZT control signal to the PZT, each of the applied signals being amplified so that a first saturation voltage of each applied signal is smaller than |V1|.