Inventor · disambiguated record
Terumi Takashi
Also filed as: TAKASHI TERUMI
58 granted patents·5 pending applications·1,110 citations·filing 1987–2009
99Inventor score
Top patents by PatentIndex Score
63 records- 0197US7486460B2Disk drive with enhanced storage capacity increase ratioHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Feb 3, 2009·66 cites·16 claims
- 0297US7440221B2Calibration of reader/writer offset in hard disk drive using shingled recordingHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Oct 21, 2008·39 cites·13 claims
- 0393US7372656B2disk drive with side erase controlHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted May 13, 2008·17 cites·20 claims
- 0492US6519715B1Signal processing apparatus and a data recording and reproducing apparatus including local memory processorHITACHI LTD·Filed 1999·Granted Feb 11, 2003·51 cites·4 claims
- 0592US5715105AMethod of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data areaHITACHI LTD·Filed 1993·Granted Feb 3, 1998·43 cites·22 claims
- 0691US6697976B1Performance evaluation method, performance evaluation system, and information storage apparatus using sameHITACHI LTD·Filed 2000·Granted Feb 24, 2004·32 cites·6 claims
- 0790US4808991AMethod and apparatus for liquid crystal display with intermediate toneHITACHI LTD·Filed 1987·Granted Feb 28, 1989·73 cites·7 claims
- 0888US8291190B2Disk 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
- 0986US6791777B2Data 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
- 1085US6215744B1Information recording/reproducing method and apparatus using EPRML connection processing systemHITACHI LTD·Filed 2000·Granted Apr 10, 2001·15 cites·4 claims
- 1185US6108158AMethod and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 1997·Granted Aug 22, 2000·33 cites·10 claims
- 1285US5677802APhase locked loop circuit with adjustable offset characteristic, method for adjustment and apparatusHITACHI LTD·Filed 1995·Granted Oct 14, 1997·49 cites·20 claims
- 1384US6791776B2Apparatus for information recording and reproducingHITACHI LTD·Filed 2001·Granted Sep 14, 2004·18 cites·8 claims
- 1484US6661594B2Signal 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
- 1583US7268707B2Coding device and decoding deviceHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 11, 2007·5 cites·19 claims
- 1683US7028214B2Signal processing apparatus and a data recording and reproducing apparatus including local memory processorHITACHI LTD·Filed 2002·Granted Apr 11, 2006·11 cites·5 claims
- 1783US6334201B1Decoding circuit and information processing apparatusHITACHI LTD·Filed 1998·Granted Dec 25, 2001·33 cites·7 claims
- 1883US5844741ASystem for reproducing high-density magnetic record data with viterbi detector for generating quadripartite reproduction dataHITACHI LTD·Filed 1995·Granted Dec 1, 1998·40 cites·18 claims
- 1982US7558931B2Write/read apparatus to control overwritingHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jul 7, 2009·5 cites·11 claims
- 2082US7408733B2Magnetic disk drive and magnetic disk mediumHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Aug 5, 2008·4 cites·11 claims
- 2182US7245236B2Data processing method and circuit for data recording and reproducing and data recording and reproducing apparatusHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jul 17, 2007·5 cites·12 claims
- 2282US6980385B2Apparatus for information recording and reproducingHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 27, 2005·15 cites·12 claims
- 2381US5818655ASignal 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
- 2480US6400523B1Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 2001·Granted Jun 4, 2002·10 cites·4 claims
- 2579US6987635B2Magnetic disk drive which accesses host RAMHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jan 17, 2006·26 cites·4 claims
- 2678US6069856AInformation recording/reproduction method and apparatus using EPRML connection processing system using concatenated demodulatorsHITACHI LTD·Filed 1997·Granted May 30, 2000·24 cites·59 claims
- 2777US6577462B1Method and device for recording and reproducing dataHITACHI LTD·Filed 1998·Granted Jun 10, 2003·34 cites·8 claims
- 2876US8117518B2Signal processing apparatus and a data recording and reproducing apparatus including local memory processorTAKASHI TERUMI·Filed 2007·Granted Feb 14, 2012·2 cites·4 claims
- 2976US6236528B1Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 2000·Granted May 22, 2001·8 cites·2 claims
- 3074US7612960B2Method for formatting data sectors on magnetic disk, and magnetic disk driveHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Nov 3, 2009·2 cites·16 claims
- 3171US4985698ADisplay panel driving apparatusHITACHI LTD·Filed 1988·Granted Jan 15, 1991·31 cites·9 claims
- 3268US6725418B2Decoding circuit using path sequence including feed-back type path sequence storing blocksHITACHI LTD·Filed 2001·Granted Apr 20, 2004·13 cites·2 claims
- 3368US6104331AReproduced signal processing method, reproduced signal processing circuit, and a magnetic storage apparatusHITACHI LTD·Filed 1998·Granted Aug 15, 2000·21 cites·27 claims
- 3468US5745066AAD converter and magnetic recording/regenerating apparatus using thereofHITACHI LTD·Filed 1996·Granted Apr 28, 1998·17 cites·30 claims
- 3568US5414571AAdaptive equalization circuit for magnetic recording apparatus having high error immunityHITACHI LTD·Filed 1992·Granted May 9, 1995·18 cites·8 claims
- 3665US5552801ALiquid crystal display deviceHITACHI LTD·Filed 1994·Granted Sep 3, 1996·24 cites·16 claims
- 3765US5448424AAGC circuit and recording and reproducing apparatus using AGC circuitHITACHI LTD·Filed 1994·Granted Sep 5, 1995·21 cites·8 claims
- 3863US5572157ADigital phase-looked loop circuitHITACHI LTD·Filed 1993·Granted Nov 5, 1996·21 cites·25 claims
- 3963US5189407AMulti-color display systemHITACHI LTD·Filed 1990·Granted Feb 23, 1993·26 cites·13 claims
- 4062US7406562B2Information read/write deviceHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jul 29, 2008·2 cites·14 claims
- 4161US2009015960A1Magnetic disk drive and magnetic disk mediumHITACHI GLOBAL STORAGE TECH·Filed 2008·Application pending·0 cites
- 4258US7334165B2Signal processing apparatus and a data recording and reproducing apparatus including local memory processorHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Feb 19, 2008·0 cites·2 claims
- 4358US5805024APhase lock loop system including a primary phase lock loop apparatus and a high order phase lock loop apparatusHITACHI LTD·Filed 1995·Granted Sep 8, 1998·23 cites·16 claims
- 4458US5553104AInformation recording/reproducing apparatus having a clock timing extraction circuit for extracting a clock signal from an input data signalHITACHI LTD·Filed 1994·Granted Sep 3, 1996·20 cites·12 claims
- 4555US7256953B2Data 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
- 4655US6731441B2Information recording and reproducing apparatusHITACHI LTD·Filed 2002·Granted May 4, 2004·2 cites·20 claims
- 4755US6700721B2Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generatorHITACHI LTD·Filed 2002·Granted Mar 2, 2004·2 cites·11 claims
- 4855US6034998AMethod of and apparatus for detecting phaseHITACHI LTD·Filed 1996·Granted Mar 7, 2000·33 cites·3 claims
- 4954US6728052B2Recording/reproducing apparatus, error correcting coding method and information recording methodHITACHI LTD·Filed 2001·Granted Apr 27, 2004·6 cites·7 claims
- 5051US5646644ALiquid crystal display deviceHITACHI LTD·Filed 1996·Granted Jul 8, 1997·14 cites·6 claims
Showing the top 50 of 63 patent records by PatentIndex Score.
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