Inventor · disambiguated record
Tatsuhiko Kosugi
Also filed as: KOSUGI TATSUHIKO
26 granted patents·4 pending applications·352 citations·filing 1993–2015
96Inventor score
Top patents by PatentIndex Score
30 records- 0189US5606469AMethod for correcting offset in a magnetic disk including apparent offtrack cancellationFUJITSU LTD·Filed 1994·Granted Feb 25, 1997·48 cites·5 claims
- 0288US5592353APower supply systemFUJITSU LTD·Filed 1994·Granted Jan 7, 1997·135 cites·20 claims
- 0386US7508610B2Method and apparatus for recording servo frame, storage disk, and method and apparatus for obtaining servo frame informationFUJITSU LTD·Filed 2005·Granted Mar 24, 2009·8 cites·10 claims
- 0486US7463438B2Information storage apparatus, and control method and program for the sameFUJITSU LTD·Filed 2005·Granted Dec 9, 2008·8 cites·15 claims
- 0585US8625230B2Position demodulator and position demodulation methodKOSUGI TATSUHIKO·Filed 2012·Granted Jan 7, 2014·10 cites·10 claims
- 0685US6498695B2Method of detecting position on disk, disk unit and diskFUJITSU LTD·Filed 2001·Granted Dec 24, 2002·17 cites·6 claims
- 0783US8023219B2Storage device, head position detection method and control circuitTOSHIBA STORAGE DEVICE CORP·Filed 2009·Granted Sep 20, 2011·5 cites·12 claims
- 0882US5694265ADisk apparatus for detecting position of head by reading phase servo patternFUJITSU LTD·Filed 1994·Granted Dec 2, 1997·35 cites·51 claims
- 0978US9230584B1Position demodulation apparatus and position demodulation methodTOSHIBA KK·Filed 2015·Granted Jan 5, 2016·5 cites·20 claims
- 1070US5757576ADisk apparatus, and phase demodulating device and method for a disk apparatusFUJITSU LTD·Filed 1996·Granted May 26, 1998·23 cites·5 claims
- 1165US5523900AHead position detecting method and apparatusFUJITSU LTD·Filed 1994·Granted Jun 4, 1996·15 cites·25 claims
- 1264US9019652B1Head position demodulating method and magnetic disk deviceTOSHIBA KK·Filed 2014·Granted Apr 28, 2015·1 cites·20 claims
- 1363US8553345B2Position demodulation apparatus and position demodulation methodOYABU HIROSHI·Filed 2012·Granted Oct 8, 2013·2 cites·13 claims
- 1461US7164261B2Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrencesFUJITSU LTD·Filed 2004·Granted Jan 16, 2007·4 cites·2 claims
- 1559US7050250B2Storage apparatus and storage mediumFUJITSU LTD·Filed 2004·Granted May 23, 2006·4 cites·36 claims
- 1658US6535348B1Servo control method and information storage deviceFUJITSU LTD·Filed 1999·Granted Mar 18, 2003·13 cites·12 claims
- 1755US8446685B2Servo frame interval correction apparatus, storage apparatus and servo frame interval correction methodKOSUGI TATSUHIKO·Filed 2008·Granted May 21, 2013·0 cites·15 claims
- 1855US7742253B2Storage device and control deviceTOSHIBA STORAGE DEVICE CORP·Filed 2007·Granted Jun 22, 2010·0 cites·20 claims
- 1954US2010134913A1Frequency control apparatus and storage deviceFUJITSU LTD·Filed 2009·Application pending·0 cites
- 2050US2008159092A1Medium storage device, position demodulation device and position demodulation methodFUJITSU LTD·Filed 2007·Application pending·0 cites
- 2149US6239940B1Disk device and disk device calibrating methodFUJITSU LTD·Filed 1997·Granted May 29, 2001·8 cites·23 claims
- 2243US7110213B2Positioner for positioning head on a diskFUJITSU LTD·Filed 2004·Granted Sep 19, 2006·0 cites·6 claims
- 2341US7196865B2Recording apparatus having discoid record mediumsFUJITSU LTD·Filed 2003·Granted Mar 27, 2007·0 cites·10 claims
- 2441US6262861B1Method of detecting position on disk, disk unit and diskFUJITSU LTD·Filed 1998·Granted Jul 17, 2001·4 cites·4 claims
- 2540US2011249354A1Disk storage apparatus and method for servo controllingTOSHIBA KK·Filed 2011·Application pending·0 cites
- 2638US5675446AMethod of controlling magnetic disk unit based on version dataFUJITSU LTD·Filed 1994·Granted Oct 7, 1997·3 cites·12 claims
- 2738US2010302675A1Storage medium and method and program for detecting track position of storage mediumTOSHIBA STORAGE DEVICE CORP·Filed 2010·Application pending·0 cites
- 2836US6466394B1Storage device and method of detecting a position of a head on a disk of the storage deviceFUJITSU LTD·Filed 1999·Granted Oct 15, 2002·3 cites·8 claims
- 2931US6556368B1Disk apparatus and control method thereforFUJITSU LTD·Filed 1999·Granted Apr 29, 2003·0 cites·8 claims
- 3031US5432659AMagnetic disk unit having a plurality of magnetic headsFUJITSU LTD·Filed 1993·Granted Jul 11, 1995·1 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Tatsuhiko Kosugi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →