Int. Cl. GHB 5/596(2006-01) A disk drive is disclosed comprising a voice coil motor GUB
5/55(2006-01)(V CM) for rotating an actuator arm about a pivot in order to (52) US …

In a disk drive having a dual Stage actuator, a method to improve head Switching time by
aligning a target head with a target track before a head Switch occurs by using a Second …

The present invention may be embodied in a method for determining fundamental-frequency
repeatable runout (1FRRO) coefficients in a disk drive. The disk drive may include a …

(57) ABSTRACT A method of servo writing a plurality of servo sectors to a disk of a disk drive
to define a plurality of data tracks is disclosed. The disk drive comprises the disk, an actuator …

Disclosed is a method in a disk drive that allows the functionality of a single high-resolution
DAC to be replicated with a pair of lower-resolution DACs that are operated in a unique …

(57) ABSTRACT A method is disclosed for efficiently determining and writing repeatable
runout (RRO) compensation value sets for data tracks on a magnetic disk in a disk drive. The …

A microactuator is employed in a disc drive system to finely position a transducing head
adjacent to a selected track of a rotatable disc. The disc drive includes an actuator arm, a …

In general, an actuator assembly and method for micropo Sitioning a disc drive head is
presented. In an implementation, the assembly includes a piezoelectric ele ment which is …

A secondary servo actuator system for use in disk drives comprising a controller and two
PZT transducers mounted on each suspension load beam in an arm assembly. When a seek …

The present invention recognizes that the optimal Servo track density at a given radius can
vary from disk Surface to disk surface within the drive and that the present methods of …