Inventor · disambiguated record
Takao Sugawara
Also filed as: SUGAWARA TAKAO
29 granted patents·2 pending applications·779 citations·filing 1987–2019
97Inventor score
Files withFUJITSU LTD24SAMSUNG ELECTRONICS CO LTD3HITACHI CHEMICAL CO LTD1MARVELL WORLD TRADE LTD1SUGAWARA TAKAO1
Top patents by PatentIndex Score
31 records- 0198US7237173B2Recording and reproducing apparatus, signal decoding circuit, error correction method and iterative decoderFUJITSU LTD·Filed 2002·Granted Jun 26, 2007·110 cites·30 claims
- 0297US7054088B2Information recording and reproducing apparatus and method, and signal decoding circuit for performing timing recoveryFUJITSU LTD·Filed 2002·Granted May 30, 2006·82 cites·14 claims
- 0396US7248425B2Disk writing/reproducing apparatus and methodSAMSUNG ELECTRONICS CO LTD·Filed 2005·Granted Jul 24, 2007·34 cites·28 claims
- 0493US7031090B2Information recording and reproducing apparatus and method and signal decoding circuit having improved noise processing characteristicsFUJITSU LTD·Filed 2001·Granted Apr 18, 2006·49 cites·66 claims
- 0592US7035029B2Method of and apparatus for recording/reading information, circuit for recording/reading signalFUJITSU LTD·Filed 2004·Granted Apr 25, 2006·38 cites·9 claims
- 0690US5880904ADisk drive having a thickness equal to an IC memory cardFUJITSU LTD·Filed 1995·Granted Mar 9, 1999·56 cites·35 claims
- 0788US7515369B2Information recording and reproducing apparatus and method, and signal decoding circuit for performing timing recoveryFUJITSU LTD·Filed 2006·Granted Apr 7, 2009·7 cites·3 claims
- 0887US6532122B1Data storage apparatus and magnetic recording methodFUJITSU LTD·Filed 2000·Granted Mar 11, 2003·31 cites·19 claims
- 0986US6501610B1Detecting circuit for read signal from magnetic recording system using partial responseFUJITSU LTD·Filed 1996·Granted Dec 31, 2002·52 cites·21 claims
- 1085US5790335AAsymmetrical signal detector and signal regenerating apparatus using the same detectorFUJITSU LTD·Filed 1996·Granted Aug 4, 1998·39 cites·7 claims
- 1184US7590929B2Record reproduction method, apparatus, and circuit for using error correcting codeFUJITSU LTD·Filed 2004·Granted Sep 15, 2009·18 cites·11 claims
- 1284US5287385AViterbi decoding system including variable-order equalizerFUJITSU LTD·Filed 1991·Granted Feb 15, 1994·59 cites·17 claims
- 1376US5432820AMaximum-likelihood decoding method and deviceFUJITSU LTD·Filed 1991·Granted Jul 11, 1995·41 cites·20 claims
- 1474US6025973AConstruction for attaching a disk in a disk driveFUJITSU LTD·Filed 1998·Granted Feb 15, 2000·30 cites·6 claims
- 1573US7110199B2Information recording and reproducing apparatus, signal decoding circuit, and information recording medium and methodFUJITSU LTD·Filed 2001·Granted Sep 19, 2006·10 cites·3 claims
- 1673US6052245ASignal regenerating apparatus having asymmetrical signal detection circuit for detecting amplitude error and signal offset from a training signal and correcting sameFUJITSU LTD·Filed 1998·Granted Apr 18, 2000·21 cites·3 claims
- 1771US5608592AHead actuatorFUJITSU LTD·Filed 1995·Granted Mar 4, 1997·24 cites·17 claims
- 1869US7814394B2Post viterbi error correction apparatus and related methodsSAMSUNG ELECTRONICS CO LTD·Filed 2007·Granted Oct 12, 2010·7 cites·14 claims
- 1967US7286596B2Training method for recording medium reproduction equalizer and recording medium reproduction apparatusFUJITSU LTD·Filed 2003·Granted Oct 23, 2007·6 cites·14 claims
- 2066US7434136B2Method of and apparatus for reading recording medium, harddisk controllerFUJITSU LTD·Filed 2004·Granted Oct 7, 2008·15 cites·19 claims
- 2161US4751136ASubstrate for high-frequency circuit and process for making the sameHITACHI CHEMICAL CO LTD·Filed 1987·Granted Jun 14, 1988·24 cites·5 claims
- 2254US7965461B2Information reproducing apparatusSAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Jun 21, 2011·0 cites·12 claims
- 2347US6016237AShaft construction of a disk driveFUJITSU LTD·Filed 1998·Granted Jan 18, 2000·6 cites·20 claims
- 2447US5892474AClock phase acquisition/tracking device and phase acquisition methodFUJITSU LTD·Filed 1997·Granted Apr 6, 1999·12 cites·35 claims
- 2547US2007121233A1Information recording and reproducing apparatusSUGAWARA TAKAO·Filed 2006·Application pending·0 cites
- 2645US10943615B2Differential interface transmission of fly-height control dataMARVELL WORLD TRADE LTD·Filed 2019·Granted Mar 9, 2021·0 cites·14 claims
- 2742US7138931B2Recording and reproducing apparatusFUJITSU LTD·Filed 2004·Granted Nov 21, 2006·2 cites·22 claims
- 2840US5768465AAlternative display state medical photographic instrumentTOPCON CORP·Filed 1994·Granted Jun 16, 1998·6 cites·1 claims
- 2936US7355938B2Timing recovery method and storage apparatus for suppressing control of sampling positionsFUJITSU LTD·Filed 2003·Granted Apr 8, 2008·0 cites·14 claims
- 3036US2003043487A1Recording and reproducing apparatus, signal decoding circuit, error correction method and iterative decoderFUJITSU LTD·Filed 2001·Application pending·0 cites
- 3125US7085666B2Magnetic head testing apparatusFUJITSU LTD·Filed 2003·Granted Aug 1, 2006·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →