Integral Peripherals, Inc.

Mobile Storage Technology, Inc.

Patricia M Vincent

Bruce D Emo

Brian D Wilson

Gary E Counts

Glen Catalano

Wayne T Weber, Deceased

A method for operating a disk drive apparatus in the Idle Mode reduces power consumption while meeting non-operating shock and vibration specifications. This is achieved by operating the disk drive apparatus with the head in the loaded state with the disk rotating at a first rotational speed, unloading the head, and in Idle Mode, rotating the disk at a second rotational speed lower than the first rotational speed, with the electronics depowered.

Method of power saving in a disk drive apparatus with head unloading and

A novel method is used to remap tracks on a disk that contain a defect in a servo field so that a large seek discontinuity is not encountered. The method is applicable to both Class 2 and Class 3 defects. When a track with a Class 2 defect or adjacent tracks with a Class 3 defect are encountered, the tracks are skipped over in assigning physical track numbers to absolute track numbers. When a first defective track is encountered, the next track without a defect is assigned the physical track number that would have been assigned to the first defective track. As the remapping operation continues, each subsequent track with a Class 2 defect or adjacent tracks with a Class 3 defect is handled in a similar manner. The remapping operation is terminated when the number of mapped tracks is equal to the desired number of physical tracks n.

Method for improving servo field yields

Growing community of inventors

Boulder, CO, United States of America

Patricia M Vincent