Inventor · disambiguated record
Randall D. Hampshire
Also filed as: HAMPSHIRE RANDALL D · HAMPSHIRE RANDALL DAVID
19 granted patents·578 citations·filing 1991–2012
96Inventor score
Technology areasG11B
Top patents by PatentIndex Score
19 records- 0194US5475545AMethod for reducing noise during seeks in a hard disk driveSEAGATE TECHNOLOGY·Filed 1991·Granted Dec 12, 1995·83 cites·3 claims
- 0291US5305447AMulti-task operating system for a disc driveSEAGATE TECHNOLOGY·Filed 1991·Granted Apr 19, 1994·48 cites·20 claims
- 0388US5305160ACompensating for variations in torque capability of voice coil motorsSEAGATE TECHNOLOGY·Filed 1991·Granted Apr 19, 1994·44 cites·2 claims
- 0487US5654841ADetection of mechanical defects in a disc drive using injected test signalsSEAGATE TECHNOLOGY·Filed 1995·Granted Aug 5, 1997·62 cites·8 claims
- 0586US6046878AObject positioning using discrete sliding mode control with variable parametersSEAGATE TECHNOLOGY·Filed 1997·Granted Apr 4, 2000·48 cites·10 claims
- 0684US6768610B1Microactuator servo system in a disc driveSEAGATE TECHNOLOGY LLC·Filed 1997·Granted Jul 27, 2004·41 cites·26 claims
- 0783US6091567AModeling position error nonlinearity to improve servo performanceSEAGATE TECHNOLOGY·Filed 1998·Granted Jul 18, 2000·47 cites·12 claims
- 0883US5835302ACompensating for variations in torque capability of voice coil motorsSEAGATE TECHNOLOGY·Filed 1994·Granted Nov 10, 1998·29 cites·6 claims
- 0979US6574068B1Servo control using continuous position error signal with high order polynomial componentSEAGATE TECHNOLOGY LLC·Filed 2000·Granted Jun 3, 2003·17 cites·20 claims
- 1079US6115205AMethod for adapting seeks of a disc drive transducer to the maximum actuator current available to accelerate and decelerate the transducerSEAGATE TECHNOLOGY·Filed 1994·Granted Sep 5, 2000·29 cites·7 claims
- 1177US5835300ADynamic compensation of servo burst measurement offsets in a disc driveSEAGATE TECHNOLOGY·Filed 1997·Granted Nov 10, 1998·31 cites·13 claims
- 1275US6046879AWeighted linearization of a position error signal in a disc driveSEAGATE TECHNOLOGY·Filed 1996·Granted Apr 4, 2000·28 cites·14 claims
- 1374US8040631B2Servo processors that alternately control head positioning relative to sequential servo patternsSEAGATE TECHNOLOGY LLC·Filed 2009·Granted Oct 18, 2011·2 cites·20 claims
- 1471US6389384B1Servo processor code evaluation using a virtual disc driveSEAGATE TECHNOLOGY LLC·Filed 2000·Granted May 14, 2002·13 cites·16 claims
- 1570US5329409ACorrection of current feedback offset for disc drive servo systemsSEAGATE TECHNOLOGY·Filed 1991·Granted Jul 12, 1994·19 cites·23 claims
- 1666US5777816AData track following method for disc drivesSEAGATE TECHNOLOGY·Filed 1993·Granted Jul 7, 1998·18 cites·4 claims
- 1758US5774297ADynamic compensation of servo burst measurement offsets in a disc driveSEAGATE TECHNOLOGY·Filed 1996·Granted Jun 30, 1998·15 cites·8 claims
- 1843US8730614B2Suppression of seek repeatable runoutWERNOW JOSIAH N·Filed 2012·Granted May 20, 2014·0 cites·19 claims
- 1942US6198591B1Multi-task operating system for a disc driveSEAGATE TECHNOLOGY LLC·Filed 1993·Granted Mar 6, 2001·4 cites·2 claims
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