Head position controlling circuit for disk unit including servo

Head position controlling method

Head position demodulating method

Head position demodulating method and disk apparatus

Head position detecting method and apparatus

Head position detecting method and disk device

Head position detector with optical slit pattern

Head position determination control apparatus of data recording/

Head position error compensation in disk drives

Head position recalibration for disk drive

Head position recognition method, a speed calculation method, an

Head position signal demodulator and head positioning unit...

Head positioner and disk drive using the same

Head positioner and information recording/replaying apparatus

Head positioner apparatus for data storage and retrieval

Head positioner for disc recorders

Head positioner having pivotable members

Head positioner preloaded stop

Head positioner stack for high-capacity disc drives

Head positioning and tape support apparatus for data recorder