Assignee
SYQUEST TECHNOLOGY
US·42 granted patents·1,819 citations·filing 1982–2000
Top patents by PatentIndex Score
42 records- 0196US5550685AApplying an adaptive feed-forward algorithm as a frequency selective filter in a closed loop disk drive servo system in order to compensate for periodic perturbations which otherwise appear in the servo system position error signalSYQUEST TECHNOLOGY·Filed 1993·Granted Aug 27, 1996·153 cites·20 claims
- 0296US4683506ADisc drive arrangement for a hard disc cartridge with a read/write head retract mechanismSYQUEST TECHNOLOGY·Filed 1983·Granted Jul 28, 1987·91 cites·8 claims
- 0396US4503474ADisc drive cartridge arrangementSYQUEST TECHNOLOGY·Filed 1982·Granted Mar 5, 1985·56 cites·15 claims
- 0495US5523902AServo burst pattern for removing offset caused by magnetic distortion and method associated therewithSYQUEST TECHNOLOGY·Filed 1994·Granted Jun 4, 1996·116 cites·10 claims
- 0595US4965685ARemovable cartridge disc drive with radial arm voice coil actuatorSYQUEST TECHNOLOGY·Filed 1989·Granted Oct 23, 1990·76 cites·21 claims
- 0695US4504879ADisc drive arrangementSYQUEST TECHNOLOGY·Filed 1982·Granted Mar 12, 1985·72 cites·24 claims
- 0793US5444586ARemovable cartridge for a disk drive with a 1.8 inch form factorSYQUEST TECHNOLOGY·Filed 1992·Granted Aug 22, 1995·52 cites·5 claims
- 0893US4965691ASealed removable cartridge for use with a high density disc drive with magnetic clutchSYQUEST TECHNOLOGY·Filed 1988·Granted Oct 23, 1990·75 cites·45 claims
- 0992US4870518ARemovable cartridge disc drive with radial arm voice coil actuatorSYQUEST TECHNOLOGY·Filed 1988·Granted Sep 26, 1989·54 cites·28 claims
- 1092US4864452ARemovable cartridge with lockable access doorSYQUEST TECHNOLOGY·Filed 1988·Granted Sep 5, 1989·57 cites·12 claims
- 1192US4864437AHead loading velocity controlSYQUEST TECHNOLOGY·Filed 1988·Granted Sep 5, 1989·81 cites·14 claims
- 1292US4722012ADisc drive arrangement for a hard disc cartridge having a carriage for accurately positioning a head relative to the cartridgeSYQUEST TECHNOLOGY·Filed 1987·Granted Jan 26, 1988·62 cites·2 claims
- 1391US5317464ARemovable cartridge disk drive with cartridge interlocking and spindle motor telescoping mechanismsSYQUEST TECHNOLOGY·Filed 1991·Granted May 31, 1994·55 cites·17 claims
- 1491US5262918ARemovable cartridge with a 2.5 inch form factor and an interlocking mechanism adapted for use in a disk driveSYQUEST TECHNOLOGY·Filed 1991·Granted Nov 16, 1993·49 cites·24 claims
- 1591US5218503A31/2 inch removable cartridge for a disk driveSYQUEST TECHNOLOGY·Filed 1991·Granted Jun 8, 1993·44 cites·34 claims
- 1691US5175657ADisc drive with magnetic coupling to a head actuator in a removable disc cartridge and with spindle motor rotor configured into the removable disc cartridgeSYQUEST TECHNOLOGY·Filed 1991·Granted Dec 29, 1992·58 cites·11 claims
- 1790US5422775A31/2 inch removable cartridge for a disk driveSYQUEST TECHNOLOGY·Filed 1993·Granted Jun 6, 1995·45 cites·2 claims
- 1890US4717981AHard disc cartridge arrangement with an automatically activated doorSYQUEST TECHNOLOGY·Filed 1987·Granted Jan 5, 1988·43 cites·3 claims
- 1989US4920462ADisc drive fine servo velocity control and method for head positioning relative to a discSYQUEST TECHNOLOGY·Filed 1988·Granted Apr 24, 1990·57 cites·16 claims
- 2088US5280403A31/2 inch removable cartridge for a disk driveSYQUEST TECHNOLOGY·Filed 1993·Granted Jan 18, 1994·36 cites·20 claims
- 2188US4630190AServo control apparatus for a disk driveSYQUEST TECHNOLOGY·Filed 1984·Granted Dec 16, 1986·44 cites·8 claims
- 2287US4974103AHigh density disc drive with magnetic clutch for use with a sealed removable cartridgeSYQUEST TECHNOLOGY·Filed 1988·Granted Nov 27, 1990·44 cites·26 claims
- 2385US5886846AMethod for applying optimal seeking technique to disk file with excessive repeatable runoutSYQUEST TECHNOLOGY·Filed 1996·Granted Mar 23, 1999·53 cites·11 claims
- 2485US5398141ARemovable cartridge disk drive with a 2.5 inch form factor utilizing a cartridge having a rotatable disk access doorSYQUEST TECHNOLOGY·Filed 1993·Granted Mar 14, 1995·31 cites·21 claims
- 2583US4488187AServo control apparatusSYQUEST TECHNOLOGY·Filed 1982·Granted Dec 11, 1984·37 cites·7 claims
- 2681US5822162ARemovable cartridge disk drive utilizing a registration contour in combination with a cartridge locking featureSYQUEST TECHNOLOGY·Filed 1997·Granted Oct 13, 1998·31 cites·7 claims
- 2781US5440436ARemovable cartridge disk drive with a 1.8 inch form factorSYQUEST TECHNOLOGY·Filed 1992·Granted Aug 8, 1995·22 cites·1 claims
- 2880US5400201AServo burst pattern for removing offset caused by magnetic distortion and method associated therewithSYQUEST TECHNOLOGY·Filed 1993·Granted Mar 21, 1995·29 cites·19 claims
- 2978US5535072ARemovable cartridge disk drive with cartridge interlocking and spindle motor telescoping mechanismsSYQUEST TECHNOLOGY·Filed 1994·Granted Jul 9, 1996·25 cites·19 claims
- 3077US6118603ADisk with fault-tolerant sample-data servo patternSYQUEST TECHNOLOGY·Filed 1995·Granted Sep 12, 2000·34 cites·16 claims
- 3177US5724216ARemovable cartridge which may be mounted to a disk drive spindle motor without relative movement between the motor and a housing of the cartridgeSYQUEST TECHNOLOGY·Filed 1994·Granted Mar 3, 1998·21 cites·25 claims
- 3276US5831790ARemovable cartridge disk drive with a compact mechanism for engaging the disk cartridge and drive spindle motorSYQUEST TECHNOLOGY·Filed 1994·Granted Nov 3, 1998·17 cites·26 claims
- 3373US5121280AZone servo sector format alignment scheme for servo and spindle motor controlSYQUEST TECHNOLOGY·Filed 1991·Granted Jun 9, 1992·22 cites·16 claims
- 3466US5777813AMethod and apparatus for reducing sideband interference when storing or retrieving data in a disk drive system adapted for downward compatibiltySYQUEST TECHNOLOGY·Filed 1995·Granted Jul 7, 1998·17 cites·37 claims
- 3562US6333834B1Rattle reduction mechanism in a removable cartridge for a disk driveSYQUEST TECHNOLOGY·Filed 2000·Granted Dec 25, 2001·3 cites·52 claims
- 3659US6049444ARotatable door and door opening mechanism for a cartridgeSYQUEST TECHNOLOGY·Filed 1997·Granted Apr 11, 2000·10 cites·23 claims
- 3759US5699210ADisk drive for receiving a removable cartridge and method of inserting the cartridgeSYQUEST TECHNOLOGY·Filed 1996·Granted Dec 16, 1997·14 cites·24 claims
- 3859US5038232ASpindle motor control circuitSYQUEST TECHNOLOGY·Filed 1989·Granted Aug 6, 1991·11 cites·20 claims
- 3949US6243231B1Disk cartridge with anti-rattle mechanismSYQUEST TECHNOLOGY·Filed 1997·Granted Jun 5, 2001·9 cites·14 claims
- 4043US5526212ATechnique for generating audible signals in a disk drive employing a voice coil actuatorSYQUEST TECHNOLOGY·Filed 1995·Granted Jun 11, 1996·6 cites·1 claims
- 4142US6456456B1Removable cartridge disk drive with a receiver for receiving a cartridge housing a hard diskSYQUEST TECHNOLOGY·Filed 1998·Granted Sep 24, 2002·5 cites·8 claims
- 4234US6430005B1Removable cartridge disk drive with a receiver for receiving a cartridge housing a hard diskSYQUEST TECHNOLOGY·Filed 1995·Granted Aug 6, 2002·2 cites·11 claims
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