Inventor · disambiguated record
Edgar D. Sheh
Also filed as: SHEH EDGAR · SHEH EDGAR D · SHEH EDGAR DE-JIA
23 granted patents·1,542 citations·filing 1990–2020
97Inventor score
Files withWESTERN DIGITAL TECH INC14RIGNEY BRIAN P4DATAPRODUCTS CORP2NAYNA NETWORKS INC1SHEH EDGAR D1
Top patents by PatentIndex Score
23 records- 0198US7457071B1Locating an initial servo track in order to servo write a disk drive from spiral tracksWESTERN DIGITAL TECH INC·Filed 2006·Granted Nov 25, 2008·116 cites·10 claims
- 0298US7391583B1Fault tolerant sync mark detection while servo writing a disk drive from spiral tracksWESTERN DIGITAL TECH INC·Filed 2006·Granted Jun 24, 2008·129 cites·16 claims
- 0398US7068459B1Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracksWESTERN DIGITAL TECH INC·Filed 2004·Granted Jun 27, 2006·175 cites·38 claims
- 0498US6693764B1Method and disk drive for improving head position accuracy during track following through real-time identification of external vibrationWESTERN DIGITAL TECH INC·Filed 2001·Granted Feb 17, 2004·135 cites·18 claims
- 0597US8665551B1Disk drive adjusting gain and offset of BEMF velocity sensor during self writing of spiral tracksRIGNEY BRIAN P·Filed 2011·Granted Mar 4, 2014·108 cites·18 claims
- 0697US8634283B1Disk drive performing in-drive spiral track writingRIGNEY BRIAN P·Filed 2011·Granted Jan 21, 2014·116 cites·16 claims
- 0797US8634154B1Disk drive writing a sync mark seam in a bootstrap spiral trackRIGNEY BRIAN P·Filed 2011·Granted Jan 21, 2014·113 cites·24 claims
- 0897US7391584B1Compensating for repeatable phase error when servo writing a disk drive from spiral tracksWESTERN DIGITAL TECH INC·Filed 2006·Granted Jun 24, 2008·138 cites·18 claims
- 0996US6614618B1Disk drive with feed-forward control path that receives a reference position signal to apply a feed-forward command effort at a rate greater than a servo sampling rateWESTERN DIGITAL TECH INC·Filed 2000·Granted Sep 2, 2003·124 cites·20 claims
- 1096US6204988B1Disk drive capable of autonomously evaluating and adapting the frequency response of its servo control systemWESTERN DIGITAL CORP·Filed 1998·Granted Mar 20, 2001·146 cites·19 claims
- 1195US8498076B1Disk drive biasing timing recovery measurements for spiral tracks based on radial location of headSHEH EDGAR D·Filed 2010·Granted Jul 30, 2013·108 cites·20 claims
- 1293US9064537B1Disk drive measuring radial offset between heads by detecting a difference between ramp contactWESTERN DIGITAL TECH INC·Filed 2013·Granted Jun 23, 2015·25 cites·22 claims
- 1388US6529654B1Method for transparent switching and controlling optical signals using mirror designsNAYNA NETWORKS INC·Filed 2001·Granted Mar 4, 2003·45 cites·17 claims
- 1484US9076490B1Disk drive writing radial offset spiral servo tracks by reading spiral seed tracksWESTERN DIGITAL TECH INC·Filed 2012·Granted Jul 7, 2015·7 cites·14 claims
- 1580US8982490B1Data storage device reading first spiral track while simultaneously writing second spiral trackWESTERN DIGITAL TECH INC·Filed 2014·Granted Mar 17, 2015·4 cites·14 claims
- 1680US8902535B1Disk drive adapting feed-forward compensation using iterative learning control over segments of seek lengthWESTERN DIGITAL TECH INC·Filed 2012·Granted Dec 2, 2014·5 cites·20 claims
- 1776US8861126B1Disk drive detecting when head is on rampWESTERN DIGITAL TECH INC·Filed 2013·Granted Oct 14, 2014·3 cites·18 claims
- 1872US5142296AInk jet nozzle crosstalk suppressionDATAPRODUCTS CORP·Filed 1990·Granted Aug 25, 1992·36 cites·6 claims
- 1970US10923146B1Data storage device employing triangle-like dither to spread track squeezeWESTERN DIGITAL TECH INC·Filed 2020·Granted Feb 16, 2021·1 cites·19 claims
- 2065US9047901B1Disk drive measuring spiral track error by measuring a slope of a spiral track across a disk radiusWESTERN DIGITAL TECH INC·Filed 2013·Granted Jun 2, 2015·1 cites·22 claims
- 2165US8917474B1Disk drive calibrating a velocity profile prior to writing a spiral trackRIGNEY BRIAN P·Filed 2011·Granted Dec 23, 2014·1 cites·18 claims
- 2253US9053727B1Disk drive opening spiral crossing window based on DC and AC spiral track errorWESTERN DIGITAL TECH INC·Filed 2014·Granted Jun 9, 2015·0 cites·14 claims
- 2343US5130720ASystem for driving ink jet transducers and method of operationDATAPRODUCTS CORP·Filed 1990·Granted Jul 14, 1992·6 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →