Inventor · disambiguated record
Hiroshi Tsuyuguchi
Also filed as: TSUYUGUCHI HIROSHI
53 granted patents·2 pending applications·1,024 citations·filing 1979–2006
99Inventor score
Top patents by PatentIndex Score
55 records- 0199US4321635AApparatus for selective retrieval of information streams or itemsTEAC CORP·Filed 1979·Granted Mar 23, 1982·174 cites·12 claims
- 0295US4688131AInformation processing apparatus having locking means permitting ready detachment of the magnetic disk drive assemblyTEAC CORP·Filed 1984·Granted Aug 18, 1987·57 cites·5 claims
- 0394US5408369APower saving system for rotating disk data storage apparatusTEAC CORP·Filed 1993·Granted Apr 18, 1995·71 cites·8 claims
- 0493US4697129AStepping motor drive system and method capable of stopping the rotor in a required angular positionTEAC CORP·Filed 1986·Granted Sep 29, 1987·68 cites·8 claims
- 0590US5442608ADisk apparatus having a power consumption reducing mechanismMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Aug 15, 1995·54 cites·16 claims
- 0688US4771346AMethod and apparatus for rewriting on a magnetic disk on which data has been written by another apparatus having half the track density capability of the first apparatusTEAC CORP·Filed 1987·Granted Sep 13, 1988·36 cites·12 claims
- 0788US4677359AStepping motor drive method and system capable of stopping the rotor in a required angular positionTEAC CORP·Filed 1986·Granted Jun 30, 1987·53 cites·11 claims
- 0888US4658307AData transfer apparatus for use with a flexible magnetic disk or the likeTEAC CORP·Filed 1984·Granted Apr 14, 1987·36 cites·9 claims
- 0982US5862113AMethod and apparatus for wobble-free data recovery from CD-rom or the likeTEAC CORP·Filed 1997·Granted Jan 19, 1999·38 cites·18 claims
- 1079US6469858B1Motor current consumption control system for a flexible magnetic disk drive or the likeTEAC CORP·Filed 2000·Granted Oct 22, 2002·13 cites·10 claims
- 1179US5010246AOptical head apparatus applicable to optical disc apparatusTEAC CORP·Filed 1990·Granted Apr 23, 1991·29 cites·8 claims
- 1276US4783706ACircuit arrangement and method for saving power in magnetic disk apparatus without head displacementTEAC CORP·Filed 1987·Granted Nov 8, 1988·22 cites·5 claims
- 1375US5425014AApparatus for constant angular velocity reading of constant linear velocity disksTEAC CORP·Filed 1994·Granted Jun 13, 1995·23 cites·4 claims
- 1473US4926403AMagneto-optic recording apparatus for recording information selectively on both sides of the recording mediumTEAC CORP·Filed 1988·Granted May 15, 1990·21 cites·6 claims
- 1573US4700243APower saving circuit arrangement for an apparatus for data transfer with flexible magnetic disk or the likeTEAC CORP·Filed 1984·Granted Oct 13, 1987·17 cites·2 claims
- 1671US5329510AMethod and apparatus for discriminating between unformatted magnetic disk assemblies of two different storage capacitiesTEAC CORP·Filed 1992·Granted Jul 12, 1994·20 cites·4 claims
- 1769US4688112APower-saving data transfer apparatus with a flexible magnetic disk or the likeTEAC CORP·Filed 1985·Granted Aug 18, 1987·17 cites·6 claims
- 1866US7496773B2Data recording/reproducing system using optical disk apparatusTEAC CORP·Filed 2005·Granted Feb 24, 2009·2 cites·4 claims
- 1965US5303223AHead carriage apparatus moved by a lead-screw shaft including resilient means for pressing the lead-screw shaft in a slanting direction toward the head carriageTEAC CORP·Filed 1991·Granted Apr 12, 1994·17 cites·4 claims
- 2064US6483656B1Pilot lamp current consumption reduction system for a flexible magnetic disk drive or the likeTEAC CORP·Filed 2000·Granted Nov 19, 2002·7 cites·13 claims
- 2164US4816934APower-saving read/write circuit for apparatus for digital data transfer with a magnetic diskTEAC CORP·Filed 1987·Granted Mar 28, 1989·13 cites·13 claims
- 2263US5309296ASystem for eliminating noise arising from difference in polarity of magnetization by tunnel erase headsTEAC CORP·Filed 1991·Granted May 3, 1994·14 cites·4 claims
- 2362US4926409AOptical permitting record/playback from both sides of an optical diskTEAC CORP·Filed 1988·Granted May 15, 1990·13 cites·6 claims
- 2460US6289397B1Disk drive or like peripheral storage device adapted for firmware upgrading, self-testing, etc.TEAC CORP·Filed 1999·Granted Sep 11, 2001·44 cites·13 claims
- 2556USD443867SMagnetic disc recording/reproducing apparatus with semiconductor memory card recording/reproducing deviceTEAC CORP·Filed 2000·Granted Jun 19, 2001·12 cites·1 claims
- 2655US6801381B2Magnetic disk apparatusVICTOR COMPANY OF JAPAN·Filed 2001·Granted Oct 5, 2004·2 cites·3 claims
- 2754US5283702APower saving system for rotating disk data storage apparatusTEAC CORP·Filed 1991·Granted Feb 1, 1994·10 cites·4 claims
- 2853US5309628AAssembling position adjusting mechanism of a spindle motor for a magnetic disk apparatusTEAC CORP·Filed 1992·Granted May 10, 1994·16 cites·7 claims
- 2953US4626942APower-saving data transfer apparatus with a flexible magnetic disk or the likeTEAC CORP·Filed 1985·Granted Dec 2, 1986·9 cites·15 claims
- 3052US5083302AOptical tracking servo apparatusTEAC CORP·Filed 1988·Granted Jan 21, 1992·10 cites·6 claims
- 3152US4984224AApparatus for recording and/or erasing an information signal on and from a magneto-optical disk wherein the magnetic biasing field means is part of a rotor magnet included in a stepping motorTEAC CORP·Filed 1989·Granted Jan 8, 1991·8 cites·5 claims
- 3249US4918743ACircuit for generating a dual purpose control signal in a disk apparatusTEAC CORP·Filed 1988·Granted Apr 17, 1990·7 cites·15 claims
- 3349US4777545ACircuit arrangement for inhibiting writing on a magnetic disk during the settling time of a transducer headTEAC CORP·Filed 1986·Granted Oct 11, 1988·7 cites·11 claims
- 3444US6173363B1Data transmission device for reading data from a memory medium and transmitting the data to a magnetic reproducing apparatus with a reduced noiseTEAC CORP·Filed 1998·Granted Jan 9, 2001·6 cites·7 claims
- 3544US5357384ARotating disk data storage apparatus capable of preventing head travel when the disk is not loadedTEAC CORP·Filed 1994·Granted Oct 18, 1994·6 cites·3 claims
- 3644US5303107ASystem for holding a track counter active despite power suspension in rotating disk data storage apparatusTEAC CORP·Filed 1992·Granted Apr 12, 1994·6 cites·6 claims
- 3744US2007205281A1Electronic apparatus and storage medium reading out device housed in electronic apparatusTEAC CORP·Filed 2006·Application pending·0 cites
- 3842US4870514ADisk drive circuit arrangement for the suppression of undesired index pulsesTEAC CORP·Filed 1987·Granted Sep 26, 1989·5 cites·5 claims
- 3942US4691255APower saving circuit arrangement for data transfer apparatus with a disklike record mediumTEAC CORP·Filed 1985·Granted Sep 1, 1987·5 cites·5 claims
- 4041US5345343APower saving system for file protect and disk capacity sensors in rotating disk data storage apparatusTEAC CORP·Filed 1993·Granted Sep 6, 1994·4 cites·12 claims
- 4141US4782406AData transfer apparatus with a disklike record medium and a method of operation thereforeTEAC CORP·Filed 1987·Granted Nov 1, 1988·5 cites·5 claims
- 4240US4935914AOptical recording and reproducing apparatus for verifying correct writing of information signalTEAC CORP·Filed 1988·Granted Jun 19, 1990·5 cites·9 claims
- 4340US4809119ACircuit arrangement for the determination of the constant speed rotation of a disklike record mediumTEAC CORP·Filed 1986·Granted Feb 28, 1989·4 cites·9 claims
- 4440US4677510AData transfer apparatus with a disklike record mediumTEAC CORP·Filed 1985·Granted Jun 30, 1987·5 cites·3 claims
- 4539US4754344AMethod and apparatus for formatting magnetic disks with use of host equipment programmed for smaller capacity magnetic disksTEAC CORP·Filed 1986·Granted Jun 28, 1988·9 cites·9 claims
- 4638US5552945ATransducer recalibration system and method for a rotating disk data storageTEAC CORP·Filed 1994·Granted Sep 3, 1996·3 cites·6 claims
- 4738US5293601AFloppy disk control unit and apparatus having a floppy disk control unitTEAC CORP·Filed 1990·Granted Mar 8, 1994·4 cites·12 claims
- 4837US5434724AMethod and apparatus for the high speed driving of a stepper motor against seek error upon power restoration in a microcomputer systemTEAC CORP·Filed 1994·Granted Jul 18, 1995·3 cites·14 claims
- 4937US2001006502A1Disk recording method and apparatus providing for realtime monitoringTEAC CORP·Filed 2000·Application pending·0 cites
- 5036US4675763AMagnetic disk drive with a disk leveling mechanismTEAC CORP·Filed 1985·Granted Jun 23, 1987·3 cites·7 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →