Inventor · disambiguated record
Jeffrey A. Heydt
Also filed as: HEYDT JEFFREY A · HEYDT JEFFREY ALAN
10 granted patents·2 pending applications·210 citations·filing 1999–2006
91Inventor score
Files withSEAGATE TECHNOLOGY LLC12
Top patents by PatentIndex Score
12 records- 0190US6577088B2Closed loop spindle motor acceleration control in a disc driveSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jun 10, 2003·34 cites·15 claims
- 0289US6710567B2Velocity dependent reference profile for spindle motor acceleration controlSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Mar 23, 2004·29 cites·31 claims
- 0388US6664749B2Spindle motor initialization after a control processor reset condition in a disc driveSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Dec 16, 2003·28 cites·27 claims
- 0487US7046463B2Low flying head detection using readback signal amplitude modulationSEAGATE TECHNOLOGY LLC·Filed 2002·Granted May 16, 2006·22 cites·13 claims
- 0585US7432677B2Closed-loop rotational control of a brushless dc motorSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Oct 7, 2008·39 cites·19 claims
- 0683US6768609B2Reducing position error signal nonlinearity through iterative calibration of a compensation tableSEAGATE TECHNOLOGY LLC·Filed 2001·Granted Jul 27, 2004·25 cites·15 claims
- 0778US6876510B2Detecting head landings on a data zone of a data storage discSEAGATE TECHNOLOGY LLC·Filed 2002·Granted Apr 5, 2005·13 cites·19 claims
- 0864US7062160B2Monitoring current in a motor during acceleration to verify motor frequency lockSEAGATE TECHNOLOGY LLC·Filed 2002·Granted Jun 13, 2006·5 cites·17 claims
- 0959US6487033B1Motor speed observer for data protection in a disc driveSEAGATE TECHNOLOGY LLC·Filed 1999·Granted Nov 26, 2002·14 cites·18 claims
- 1054US2006215309A1Low flying head detection using readback signal amplitude modulationSEAGATE TECHNOLOGY LLC·Filed 2006·Application pending·0 cites
- 1138US7197410B2Predicting loss of frequency lock between a motor control circuit and a motorSEAGATE TECHNOLOGY LLC·Filed 2004·Granted Mar 27, 2007·1 cites·17 claims
- 1232US2003184249A1Limited current sliding mode control for low RPM spindle motor speed regulationSEAGATE TECHNOLOGY LLC·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →