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Paul M Romano, Larry D King, Mike Machado, Petro Estakhri, Son Ho, Phuc Tran, Maryam Imam: Sequence, timing and synchronization technique for servo system controller of a computer disk mass storage device. Cirrus Logic, John R Ley, William J Kubida, Howard H Sheerin, December 19, 1995: US05477103 (48 worldwide citation)

A servo system controller for a disk drive device which includes a rotating mass storage disk incorporates a timing error determining circuit for determining rotational speed variations in the disk from information contained in a servo field recorded in a track. A timing error signal is supplied whe ...


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Paul M Romano, Larry D King, Mike Machado, Petro Estakhri, Son Ho, Phuc Tran, Maryam Imam: Burst comparison and sequential technique for determining servo control in a mass storage disk device. Cirrus Logic, John R Ley, November 19, 1996: US05576910 (22 worldwide citation)

A burst magnitude comparator and an instruction sequencer are employed in a servo system controller to rapidly determine position correction information for moving a transducer head over the center line of a track recorded on a disk in a mass storage disk drive. The burst magnitude comparator select ...