Inventor · disambiguated record
Richard M. Ehrlich
Also filed as: EHRLICH RICHARD M
114 granted patents·31 pending applications·1,668 citations·filing 1992–2024
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD62TOSHIBA KK46EHRLICH RICHARD M7QUANTUM CORP6MAXTOR CORP5
Top patents by PatentIndex Score
145 records- 0197US7440224B2Disk drive servoTOSHIBA CORP·Filed 2006·Granted Oct 21, 2008·69 cites·16 claims
- 0297US6999264B2Methods for variable multi-pass servowriting and self-servowritingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Feb 14, 2006·65 cites·12 claims
- 0397US6519107B1Hard disk drive having self-written servo burst patternsMAXTOR CORP·Filed 1999·Granted Feb 11, 2003·241 cites·36 claims
- 0497US5325247ADigital multi-rate notch filter for sampled servo digital control systemQUANTUM CORP·Filed 1992·Granted Jun 28, 1994·122 cites·4 claims
- 0596US7256956B2Propagation self servowrite using self-written spiral signals for in-process calibrationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Aug 14, 2007·26 cites·16 claims
- 0696US6992855B2Methods for limiting channel control values to thereby improve servo-demodulation robustnessMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jan 31, 2006·74 cites·28 claims
- 0796US5444583ADisk drive having on-board triggered digital sampling analyzerQUANTUM CORP·Filed 1994·Granted Aug 22, 1995·116 cites·10 claims
- 0894US11189309B1Split-actuator drive that coordinates timing of aggressor and victim for effective victim disturbance-feedforwardTOSHIBA KK·Filed 2021·Granted Nov 30, 2021·4 cites·20 claims
- 0994US5862005ASynchronous detection of wide bi-phase coded servo information for disk driveQUANTUM CORP·Filed 1996·Granted Jan 19, 1999·72 cites·26 claims
- 1094US5793559AIn drive correction of servo pattern errorsQUANTUM CORP·Filed 1996·Granted Aug 11, 1998·105 cites·6 claims
- 1193US7110209B2Systems and methods for efficient writing of low-RRO phase-burst servo patternsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Sep 19, 2006·22 cites·20 claims
- 1293US6061200AIn-drive correction of servo pattern errorsQUANTUM CORP·Filed 1997·Granted May 9, 2000·86 cites·20 claims
- 1393US5777760APosition feedback system for volume holographic storage mediaQUANTUM CORP·Filed 1996·Granted Jul 7, 1998·114 cites·24 claims
- 1491US7623312B2Hard disk drive off track event method and deviceTOSHIBA KK·Filed 2007·Granted Nov 24, 2009·11 cites·17 claims
- 1591US7298568B2Systems and methods for using worf to identify burst patterns for repairMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Nov 20, 2007·11 cites·8 claims
- 1691US7054083B2Systems for searching for SAM patterns at multiple nominal frequenciesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted May 30, 2006·29 cites·26 claims
- 1790US11205450B2Split-actuator disk drive that uses microactuator feedforward to reduce effects of cross-actuator couplingTOSHIBA KK·Filed 2020·Granted Dec 21, 2021·3 cites·20 claims
- 1890US11189310B1Split-actuator disk drive that uses microactuator feedforward to reduce effects of cross-actuator couplingTOSHIBA KK·Filed 2020·Granted Nov 30, 2021·3 cites·20 claims
- 1989US11615811B2Split actuator drive that limits slew rate of aggressor VCM to reduce victim disturbancesTOSHIBA KK·Filed 2021·Granted Mar 28, 2023·2 cites·14 claims
- 2089US7206148B2Variable frequency chevron in printed media reference pattern to improve servo demodulationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Apr 17, 2007·9 cites·19 claims
- 2189US7130146B2Two-pass-per-track servo burst patternsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Oct 31, 2006·9 cites·39 claims
- 2289US6452990B1Synchronous detection of wide bi-phase coded servo information for disk driveMAXTOR CORP·Filed 1999·Granted Sep 17, 2002·46 cites·24 claims
- 2388US11862196B1Split-actuator drive that coordinates fractional-wedge timing of aggressor and victim for effective victim feedforwardTOSHIBA KK·Filed 2022·Granted Jan 2, 2024·2 cites·20 claims
- 2488US7864476B2Low track-per-inch (TPI) zone with reduced need for adjacent-track-erasure (ATE) refreshTOSHIBA KK·Filed 2008·Granted Jan 4, 2011·8 cites·16 claims
- 2588US7719781B2Method and apparatus for phase-shift null-burst-patternTOSHIBA KK·Filed 2008·Granted May 18, 2010·8 cites·19 claims
- 2688US7167336B1Method for providing variable gain, iterative embedded runout correction in a disk driveMAXTOR CORP·Filed 2003·Granted Jan 23, 2007·24 cites·70 claims
- 2787US10431257B1Data center dual stage drive with data stripingTOSHIBA KK·Filed 2018·Granted Oct 1, 2019·6 cites·20 claims
- 2886US8018669B2Proximity detection method for magnetic head and recording mediumTOSHIBA KK·Filed 2009·Granted Sep 13, 2011·6 cites·3 claims
- 2984US9459802B1Hybrid-HDD that limits dirty data in NANDTOSHIBA KK·Filed 2015·Granted Oct 4, 2016·5 cites·20 claims
- 3084US7075742B2Servo demodulator systems including multiple servo demodulatorsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jul 11, 2006·18 cites·21 claims
- 3183US10770110B1Disk drive with efficient handling of off-track events during sequential writeTOSHIBA KK·Filed 2019·Granted Sep 8, 2020·4 cites·20 claims
- 3283US8203802B2Proximity detection method for magnetic head and recording mediumEHRLICH RICHARD M·Filed 2011·Granted Jun 19, 2012·7 cites·7 claims
- 3383US7457066B2Method and apparatus for phase-shift null-burst-patternKABUSHIKI KIASHA TOSHIBA·Filed 2006·Granted Nov 25, 2008·6 cites·8 claims
- 3483US7206157B2Systems and methods for two-step self-servowriting using optimal intermediate patternMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Apr 17, 2007·16 cites·21 claims
- 3583US7092177B2Methods for searching for SAM patterns using multiple sets of servo demodulation detection parametersMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 15, 2006·16 cites·21 claims
- 3682US7721049B2Disk drive write methodKABUHSIKI KAISHA TOSHIBA·Filed 2006·Granted May 18, 2010·12 cites·19 claims
- 3781US11688423B2Split-actuator disk drive that uses microactuator feedforward to reduce effects of cross-actuator couplingTOSHIBA KK·Filed 2021·Granted Jun 27, 2023·1 cites·20 claims
- 3881US11514939B2Split-actuator drive that coordinates timing of aggressor and victim for effective victim disturbance-feedforwardTOSHIBA KK·Filed 2021·Granted Nov 29, 2022·1 cites·19 claims
- 3981US10418053B1Disk-drive with efficient command-reorderingTOSHIBA KK·Filed 2018·Granted Sep 17, 2019·2 cites·22 claims
- 4081US9396755B2Temperature-defined data-storage policy for a hybrid disk driveTOSHIBA KK·Filed 2013·Granted Jul 19, 2016·6 cites·8 claims
- 4181US7215498B2Dynamic stroke optimization in the self servo-write processMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted May 8, 2007·15 cites·59 claims
- 4281US7009802B1Systems and methods for printed-media SSW reference pattern with extra servo bursts used near ODMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Mar 7, 2006·14 cites·24 claims
- 4380US7274527B2Method for optimizing dynamic stroke in the self servo-write processMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Sep 25, 2007·14 cites·41 claims
- 4480US7180696B2Methods for selective multi-pass servowriting and self-servowritingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Feb 20, 2007·9 cites·11 claims
- 4579US8004788B2Proximity detection method for magnetic head and recording mediumTOSHIBA KK·Filed 2011·Granted Aug 23, 2011·4 cites·6 claims
- 4679US7265931B2Apparatus to reject disk drive disturbanceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Sep 4, 2007·13 cites·11 claims
- 4778US11422710B2Handling of verification data in disk drive cacheTOSHIBA KK·Filed 2020·Granted Aug 23, 2022·1 cites·19 claims
- 4878US7292402B2Systems and methods for multipass servowriting with a null burst patternMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Nov 6, 2007·3 cites·15 claims
- 4978US7092183B2Template pattern for improving printed media self-servo writingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 15, 2006·12 cites·30 claims
- 5077US11062733B2Disk drive with efficient handling of off-track events during sequential writeTOSHIBA KK·Filed 2020·Granted Jul 13, 2021·1 cites·20 claims
Showing the top 50 of 145 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →