| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 03/09/1999 | US5880902 Method and apparatus for adaptively calibrating disk drive performance based on real time performance monitoring |
| 03/09/1999 | US5880901 Method and apparatus for positioning a magnetoresistive head |
| 03/09/1999 | US5880900 Error recovery method and disk drive apparatus to superimpose a vibration signal with one-half frequency onto a driving signal to a magnetoresistive head |
| 03/09/1999 | US5880587 Method and apparatus for performing in file slider take-off measurements through tuned external AE detection |
| 03/09/1999 | US5880456 Circuit provides a normalized position signal for lateral photoeffect position sensor |
| 03/09/1999 | US5879570 One piece flexure for a hard disc file head with selective nickel plating |
| 03/04/1999 | WO1999010887A1 Cartridge load and eject mechanism for a removable cartridge drive |
| 03/04/1999 | WO1998041832A3 Disk drive head position encoder |
| 03/04/1999 | DE19807272A1 Optical storage arrangement |
| 03/04/1999 | CA2302149A1 Cartridge load and eject mechanism for a removable cartridge drive |
| 03/03/1999 | EP0898813A1 Data and servo sampling in synchronous data detection channel |
| 03/02/1999 | US5878015 Laser driver for controlling electrical current passed to a laser in an optical disc system |
| 03/02/1999 | US5878005 Information recording/reproducing apparatus for periodically executing servo processing |
| 03/02/1999 | US5877922 Dual latch apparatus for restraining a direct access storage device actuator |
| 03/02/1999 | US5877921 High shock suspension with load beam shielded flexure |
| 03/02/1999 | US5877917 Floppy disk unit |
| 03/02/1999 | US5877914 Amplifier output clamping scheme |
| 03/02/1999 | US5877910 Dual magnetic head and method for writing on very high track density and conventional track density floppy disks |
| 03/02/1999 | US5877857 Eccentricity tester for head turnout zone of magnetic disk and testing method thereof |
| 03/02/1999 | US5877605 Servo device having plural servo systems |
| 02/25/1999 | WO1999009548A1 Disk and drive system and methods with carbon overcoat for load/unload applications |
| 02/25/1999 | WO1999009547A1 Slider for disc storage system |
| 02/25/1999 | WO1999009546A2 Constant density servo information in a disc drive |
| 02/25/1999 | WO1999009545A1 Ramp load assembly for a disc drive |
| 02/25/1999 | WO1999009544A1 Disk drive actuator using fiber composite material |
| 02/24/1999 | CN1208927A Disk unit, servo track write system and servo track write method |
| 02/23/1999 | US5875166 Optical pick-up apparatus having low coefficient of friction between slide bearing and guiding member |
| 02/23/1999 | US5875158 Servo control system for information storage device |
| 02/23/1999 | US5875155 Optical disk unit having reduced recording and reproducing errors |
| 02/23/1999 | US5875083 Magnetic disc having planiarized CSS zone |
| 02/23/1999 | US5875077 Method of writing servo data on a magnetic disk medium |
| 02/23/1999 | US5875076 Asymmetrical actuator structure for recording-reproducing apparatus |
| 02/23/1999 | US5875074 Adjustable head loading apparatus |
| 02/23/1999 | US5875073 Single, central limit stop for a disc drive actuator |
| 02/23/1999 | US5875072 For use in a data storage disk drive |
| 02/23/1999 | US5875071 Magnetic disk data storage system |
| 02/23/1999 | US5875066 Method and apparatus for real-time filtering of a position error signal for a disk drive servo system |
| 02/23/1999 | US5875064 Method and system for accurate self-servowriting with normalization in a disk drive |
| 02/23/1999 | CA2147336C Method of and apparatus for recording and reproducing optical information |
| 02/18/1999 | WO1999008269A1 Model validation algorithm for characterizing parameters and uncertainty in a disc drive |
| 02/18/1999 | WO1999008268A1 Method of implementing a linear discrete-time state-space servo control system on a fixed-point digital signal processor in a disc drive |
| 02/18/1999 | WO1999008267A1 Disc drive with robust track following servo controller |
| 02/17/1999 | EP0896716A1 Pwm/linear driver for disk drive voice coil actuator |
| 02/16/1999 | US5872766 Device for adjusting the preload of a plate spring for an optical pickup apparatus |
| 02/16/1999 | US5872688 Computer disc drive system |
| 02/16/1999 | US5872687 Transducer suspension system |
| 02/16/1999 | US5872683 Floating type of magnetic head |
| 02/16/1999 | US5872679 Structure and enclosure assembly for a disk drive |
| 02/16/1999 | US5872678 Enclosure assembly for a disk with a locational and retention cast docket structure for a connector and flexible cable connected to an electronics card |
| 02/16/1999 | US5872676 Method and apparatus for positioning a dual element magnetoresistive head using thermal signals |
| 02/16/1999 | US5872674 Actuator bias prediction using lookup-table hysteresis modeling |
| 02/16/1999 | US5872673 Information storage device |
| 02/16/1999 | US5872671 Disk drive apparatus and read error recovery procedure therein |
| 02/16/1999 | US5872670 Methods and apparatus for preventing disk drive damage by parking a transducer during microprocessor failures |
| 02/16/1999 | US5872669 Disk drive apparatus with power conservation capability |
| 02/16/1999 | US5872439 Motor control device |
| 02/11/1999 | WO1999006999A1 Servo track writers |
| 02/11/1999 | WO1999006993A1 Low mass disc drive suspension |
| 02/11/1999 | WO1999006992A1 Method and apparatus for increasing the sample rate of a disc drive with low overhead |
| 02/11/1999 | WO1998048412A3 Microactuator servo system in a disc drive |
| 02/10/1999 | EP0799478B1 A system and method for controlling a seek operation in a disk drive |
| 02/10/1999 | CN1207539A Boundary detection method, and method and device for determination of magnetic head position thereby |
| 02/09/1999 | US5870694 Velocity detector and velocity detection method for a sled motor |
| 02/09/1999 | US5870375 Disk-shaped recording medium with a groove section having a wobbling side wall |
| 02/09/1999 | US5870367 Disc recording and/or reproducing apparatus |
| 02/09/1999 | US5870362 Slider for optical disc data storage system |
| 02/09/1999 | US5870258 Conductive trace flexure for a magnetic head suspension assembly |
| 02/09/1999 | US5870250 Method and apparatus for improving file capacity using different flying height profiles |
| 02/09/1999 | US5870249 Magnetic disk drive in which change in distance between magnetic head and disk is minimized |
| 02/09/1999 | US5870242 Disk apparatus and method of measuring frequency characteristic thereof |
| 02/09/1999 | US5870241 Method and apparatus for evasive maneuvering to keep DASD heads away from protruding surface defects |
| 02/09/1999 | US5870238 Switching offset value as need to improve sector pulse generation for a hard disk drive |
| 02/04/1999 | WO1999005679A1 Positive pressure optical slider having trailing end side pads |
| 02/04/1999 | WO1999005678A1 Slider for optical disc data storage system |
| 02/04/1999 | WO1998050911A3 Information processing with a plurality of optical discs |
| 02/03/1999 | EP0895239A2 Optical track sensing device |
| 02/03/1999 | EP0895237A1 Hard disk drive |
| 02/03/1999 | EP0895225A1 Method of controlling flying of magnetic head and device therefor in hard disk drive |
| 02/03/1999 | EP0894321A1 Optical disk drive with a plurality of optical heads of different types |
| 02/03/1999 | CN1206915A 磁头装置 Head means |
| 02/02/1999 | US5867464 Device for reading an information carrier, including a discriminator for determining the type of information carrier |
| 02/02/1999 | US5867353 Off-track PES calibration for a magneto-resistive element |
| 02/02/1999 | US5867348 Disk drive actuator assembly with rotational imbalance compensation |
| 02/02/1999 | US5867342 Tracking servo system for magnetic disc drive with reduced head-settling time |
| 02/02/1999 | US5867341 Disc drive system using multiple pairs of embedded servo bursts |
| 02/02/1999 | US5867340 Microminiature hard disk drive with adaptive runout compensation |
| 02/02/1999 | US5867337 Disk drive of a sector servo system for positioning and controlling a head at a target position on a disk |
| 02/02/1999 | US5867330 Reproducing apparatus detecting pilot signals by binary data processing |
| 01/28/1999 | WO1999004388A1 Magnetic read/write head actuator assembly |
| 01/27/1999 | EP0893797A2 Compact tape drive head positioning system |
| 01/27/1999 | EP0795172B1 Direct access storage device with magneto-resistive transducing head apparatus |
| 01/27/1999 | CN1206488A Recording/reproducing head, recording/reproducing head positioning mechanism and recorder/reproducer |
| 01/26/1999 | US5864449 Precision limit stop for high density disk drives |
| 01/26/1999 | US5864447 Disk drive with stopper mechanism including a cushion member seated on a circumferential groove |
| 01/26/1999 | US5864446 Head assembly for recording and reproducing including a head supporting part having a protection member |
| 01/26/1999 | US5864444 Actuator arm bumper in a disc drive |
| 01/26/1999 | US5864441 Actuator mounting apparatus for top-down data storage system assembly |
| 01/26/1999 | CA2040701C Information recording/reproducing apparatus |
| 01/21/1999 | DE19822755A1 Disc player |
| 01/20/1999 | EP0891619A1 System for recording and/or reproducing information, medium for use in the system, and magnetic write head and arrangement for formatting the medium |