Inventor · disambiguated record
John Jeffrey Stephenson
Also filed as: STEPHENSON JOHN J · STEPHENSON JOHN JEFFREY
14 granted patents·351 citations·filing 1990–2000
94Inventor score
Top patents by PatentIndex Score
14 records- 0191US5119250AMethod and apparatus for performing a seekIBM·Filed 1990·Granted Jun 2, 1992·62 cites·23 claims
- 0286US6393511B1Multi-track density direct access storage deviceIBM·Filed 1999·Granted May 21, 2002·42 cites·10 claims
- 0383US5241433ADisk drive servo controlIBM·Filed 1992·Granted Aug 31, 1993·41 cites·13 claims
- 0478US5999351AMulti-track density direct access storage deviceIBM·Filed 1996·Granted Dec 7, 1999·28 cites·17 claims
- 0578US5682274AMethod and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk mediumIBM·Filed 1995·Granted Oct 28, 1997·34 cites·18 claims
- 0676US5485323AMethod and apparatus for moving a disk drive actuator away from a magnetic latchIBM·Filed 1993·Granted Jan 16, 1996·23 cites·6 claims
- 0769US5754357AMethod and apparatus for moving a disk drive actuator away from a magnetic latchIBM·Filed 1995·Granted May 19, 1998·20 cites·13 claims
- 0868US5287046AMethod and system for actuator control for direct access storage devicesIBM·Filed 1992·Granted Feb 15, 1994·32 cites·11 claims
- 0966US6636562B1Unconstrained equalization method and apparatus with gain and timing bias to control runaway for direct access storage device (DASD) data channelsHITACHI GLOBAL STORAGE TECH·Filed 2000·Granted Oct 21, 2003·6 cites·12 claims
- 1065US5193036ATransducer head skew arrangement for disk drive systemIBM·Filed 1990·Granted Mar 9, 1993·16 cites·16 claims
- 1163US6104566ADirect access storage device (DASD) with a variable spindle rotation speedIBM·Filed 1997·Granted Aug 15, 2000·17 cites·13 claims
- 1255US6307705B1Method and apparatus for reducing track switch latency in a disk driveIBM·Filed 1993·Granted Oct 23, 2001·10 cites·41 claims
- 1347US6532259B1Equalization method and apparatus with gain adjustment for direct access storage device (DASD) data channelsIBM·Filed 1999·Granted Mar 11, 2003·8 cites·12 claims
- 1440US6222879B1Self contained equalization method and apparatusIBM·Filed 1998·Granted Apr 24, 2001·12 cites·22 claims
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