Inventor · disambiguated record
Yoshiju Watanabe
Also filed as: WATANABE YOSHIJU
29 granted patents·7 pending applications·325 citations·filing 1995–2009
97Inventor score
Files withHITACHI LTD18HITACHI GLOBAL STORAGE TECH10WATANABE YOSHIJU4HITACHI VIDEO & INF SYST1KOJIMA AKIRA1
Top patents by PatentIndex Score
36 records- 0191US8239691B2Data storage device and management method of cryptographic key thereofWATANABE YOSHIJU·Filed 2008·Granted Aug 7, 2012·15 cites·10 claims
- 0290US6125156AData synchronizing signal detecting deviceHITACHI LTD·Filed 1997·Granted Sep 26, 2000·43 cites·21 claims
- 0388US8291190B2Disk drive including a host interface supporting different sizes of data sectors and method for writing data theretoWATANABE YOSHIJU·Filed 2009·Granted Oct 16, 2012·10 cites·16 claims
- 0488US6829206B1Information recording and reproducing method and information recording and reproducing deviceHITACHI LTD·Filed 2000·Granted Dec 7, 2004·21 cites·24 claims
- 0586US6791777B2Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the methodHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Sep 14, 2004·42 cites·8 claims
- 0686US6335841B1Coding apparatus and coding methodHITACHI LTD·Filed 2000·Granted Jan 1, 2002·17 cites·21 claims
- 0784US6661594B2Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 2002·Granted Dec 9, 2003·14 cites·13 claims
- 0883US7268707B2Coding device and decoding deviceHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 11, 2007·5 cites·19 claims
- 0982US7408733B2Magnetic disk drive and magnetic disk mediumHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Aug 5, 2008·4 cites·11 claims
- 1081US6473477B2Data synchronizing signal detecting deviceHITACHI LTD·Filed 2001·Granted Oct 29, 2002·10 cites·7 claims
- 1181US5818655ASignal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 1995·Granted Oct 6, 1998·30 cites·35 claims
- 1277US6304402B1Equalizer and magnetically recorded-signal reproducerHITACHI LTD·Filed 2000·Granted Oct 16, 2001·9 cites·5 claims
- 1376US6976196B2Error detecting method and device, information storing and reproducing device and magnetic disk driveHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Dec 13, 2005·10 cites·20 claims
- 1475US7020833B2Data synchronization detection method, information recording method, and information reproduction methodHITACHI VIDEO & INF SYST·Filed 2001·Granted Mar 28, 2006·17 cites·9 claims
- 1573US5970091AEqualizer having a processing unit for selecting a coefficient out of a coefficient tableHITACHI LTD·Filed 1996·Granted Oct 19, 1999·19 cites·12 claims
- 1672US7199955B2Decoding apparatus and decoding methodHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 3, 2007·6 cites·15 claims
- 1771US6704154B2Decoding apparatus and decoding methodHITACHI LTD·Filed 2001·Granted Mar 9, 2004·6 cites·15 claims
- 1867US6259753B1Data synchronizing signal detecting deviceHITACHI LTD·Filed 2000·Granted Jul 10, 2001·7 cites·23 claims
- 1964US8065516B2Hard disk drive with certification functionWATANABE YOSHIJU·Filed 2006·Granted Nov 22, 2011·3 cites·18 claims
- 2064US7184505B2Data synchronizing signal detecting deviceHITACHI LTD·Filed 2004·Granted Feb 27, 2007·3 cites·5 claims
- 2162US6972917B2Signal processing technique for preventing delay in read time from retry operationsHITACHI LTD·Filed 2002·Granted Dec 6, 2005·4 cites·12 claims
- 2261US6373407B1Data encoding method for digital data recording and data recording system using the sameHITACHI LTD·Filed 1999·Granted Apr 16, 2002·15 cites·5 claims
- 2361US2009015960A1Magnetic disk drive and magnetic disk mediumHITACHI GLOBAL STORAGE TECH·Filed 2008·Application pending·0 cites
- 2455US7256953B2Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the methodHITACHI LTD·Filed 2004·Granted Aug 14, 2007·2 cites·12 claims
- 2555US6823030B2Data synchronizing signal detecting deviceHITACHI LTD·Filed 2002·Granted Nov 23, 2004·1 cites·5 claims
- 2654US7039141B2Data synchronization detection device, information recording device, information reproduction device, information recording format, signal processing device, information recording and reproducing device, and information recording mediumHITACHI LTD·Filed 2001·Granted May 2, 2006·2 cites·17 claims
- 2754US2010149684A1Data-storage device and analysis method for data-storage deviceKOJIMA AKIRA·Filed 2009·Application pending·0 cites
- 2853US7099250B2Information recording and reproducing method and information recording and reproducing deviceHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Aug 29, 2006·1 cites·10 claims
- 2951US2005117871A1Signal processing method and apparatus and disk device using the method and apparatusFiled 2005·Application pending·0 cites
- 3050US2008075282A1Data recording device, and data management methodHITACHI GLOBAL STORAGE TECH·Filed 2007·Application pending·0 cites
- 3149US8424081B2Disk unit, magnetic disk unit and information storage unitWATANABE YOSHIJU·Filed 2007·Granted Apr 16, 2013·0 cites·11 claims
- 3249US2005219731A1Magnetic disk drive with a use time limiting functionHITACHI GLOBAL STORAGE TECH·Filed 2005·Application pending·0 cites
- 3348US6856660B1Signal processing method and apparatus and disk device using the method and apparatusHITACHI LTD·Filed 1999·Granted Feb 15, 2005·7 cites·33 claims
- 3443US2007226412A1Storage device, controller for storage device, and storage device control methodHITACHI GLOBAL STORAGE TECH·Filed 2007·Application pending·0 cites
- 3542US2001009483A1Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitFiled 2001·Application pending·0 cites
- 3637US6144515AEqualizer having a processing unit for selecting a coefficient out of a coefficient tableHITACHI LTD·Filed 1999·Granted Nov 7, 2000·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →