Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
06/1998
06/10/1998EP0846320A1 Crash stop airlock mechanism
06/10/1998EP0846319A2 Sliding mode control of a magnetoresistive read head for magnetic recording
06/09/1998US5764618 Pickup adjusting device in an optical disk player
06/09/1998US5764602 Seeking control method using timer interruption for accelerating and decelerating the optical pick-up
06/09/1998US5764444 For use in a disk drive
06/09/1998US5764441 Rotary moving coil actuator
06/09/1998US5764439 Cassette tape driving device
06/09/1998US5764437 Disc drive data storage system
06/09/1998US5764436 Fixed crash stop
06/09/1998US5764432 Recording and reproducing head slider and recording and reproducing apparatus using same
06/09/1998US5761790 Process for manufacturing a thin film slider with protruding R/W element formed by chemical-mechanical polishing
06/09/1998CA2134014C Sector architecture of fixed block disk drive
06/03/1998EP0845141A1 Suspension having reduced torsional mode gain and sensitivity
06/03/1998EP0845140A1 Improved chatter reduction in sliding mode control of a disk drive actuator
06/02/1998US5761183 Optical pickup
06/02/1998US5761166 Method and system for simultaneous storage and/or retrieval (storval) of a plurality of data on a disk means
06/02/1998US5761165 Disc device providing eccentricity compensation using a head radial position detecting circuit
06/02/1998US5761163 Track jump servo apparatus for disc reproducing system
06/02/1998US5761007 Data recording disk file
06/02/1998US5761006 Direct access storage device having compound actuator bearing system
06/02/1998US5761005 Combination transducer/slider/suspension
06/02/1998US5761004 Air bearing slider with offset crossbars to reduce roll
06/02/1998US5760997 Flexible cable structure for magnetic disk drives
06/02/1998US5760993 Information storage device with an odd number of track sequences in a zone
06/02/1998US5760992 Method for carrying out seeks in a hard disc drive to limit the generation of acoustic noise
06/02/1998US5760991 Disk storage unit positioning control for applying DC offsets to a tracking error
06/02/1998US5760990 Servo position error signal calibration in a hard disc drive
06/02/1998US5760986 Microminiature hard disk drive
06/02/1998US5760983 Method for optimizing AGC in a servo field including multiple use of an AGC sub-field and sub-field ordering
06/02/1998US5759418 Adhesively attached hard disk head suspension and etching process
05/1998
05/28/1998WO1998022940A1 Apparatus and method for servo system calibration of a removable diskette medium
05/26/1998US5757760 Information recording and/or reproducing apparatus and method for performing recording and/or reproduction of information by using probe
05/26/1998US5757748 Automatic gain control apparatus for optical disc player
05/26/1998US5757747 Tracking servo signal processing circuit and read apparatus using the same
05/26/1998US5757588 Hard disk assembly having a pivot bearing assembly comprising fingers bearing on a shaft
05/26/1998US5757587 Direct access storage device having a disk motion limiter for preventing disk data zone and spindle bearing damage
05/26/1998US5757586 Flexure mounting plate with deswaging tabs
05/26/1998US5757576 Disk apparatus, and phase demodulating device and method for a disk apparatus
05/26/1998US5757574 Methods and systems for self-servowriting including maintaining a reference level within a usable dynamic range
05/26/1998US5757573 Magnetic disk device without slider and having magnetic head mounted directly on magnetic head support
05/26/1998US5757568 System and method for encoding a servo address
05/26/1998US5755518 Pivot bearing
05/26/1998CA2137220C Track seek method and device for use with an optical information recording and reproducing apparatus
05/22/1998WO1998021716A1 Disc head slider having surface discontinuities to minimize fly stiction
05/22/1998WO1998021715A1 Slotted flex circuit and outer return path for a disk drive actuator
05/20/1998EP0843309A1 Bearing structure for stepping motor
05/20/1998EP0619042B1 A disk recording system
05/19/1998USRE35800 Air bearing slider with relieved rail ends
05/19/1998US5754731 Disk regenerative apparatus
05/19/1998US5754522 Method for forming disk, disk forming apparatus, data recording/reproducing method, data recording/reproducing apparatus, and disk capable of recording/reproducing data in high density
05/19/1998US5754509 Disc device having heads mounted on the housing and movable in a radial direction
05/19/1998US5754373 Head drum assembly having a pre-loading sheet sleeve structured to facilitate its connection with a shaft and a rotor plate and method for fixing the same onto the shaft
05/19/1998US5754372 Actuator bearing cartridge for top down assembly
05/19/1998US5754371 Swage plate bumper for disc drive
05/19/1998US5754370 Wired suspension assembly in disk storage device method for assembly head suspension assembly
05/19/1998US5754369 Head suspension with self-shielding integrated conductor trace array
05/19/1998US5754368 Suspension, slider-suspension assembly, assembly carriage device and manufacturing method of suspension
05/19/1998US5754365 Structure and enclosure assembly for a disk drive
05/19/1998US5754364 Magnetic disk apparatus
05/19/1998US5754358 Head positioning system and method for use in disk recording/reproducing apparatus
05/19/1998US5754357 Method and apparatus for moving a disk drive actuator away from a magnetic latch
05/19/1998US5754022 Optical pickup moving mechanism
05/14/1998WO1998020489A1 Component of actuator for magnetic disk apparatus
05/14/1998WO1998020487A1 Gimbal micropositioning device
05/14/1998WO1998020486A1 Actuator arm integrated piezoelectric microactuator
05/13/1998EP0689665A4 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings
05/13/1998CN1181767A Process for producing a polyamide based on a dicarboxylic acid and a diamine
05/13/1998CN1181594A Pick-oup feeding device of disc player
05/13/1998CN1181581A Optical disc apparatus accessing method and system therefor
05/12/1998US5751519 Bearing unit, carriage assembly with the bearing unit, and magnetic disk apparatus
05/12/1998US5751518 Head feeding mechanism in magnetic recording and reproducing device
05/12/1998US5751516 Non-magnetic substrate material and slider assembly for use in flying-type magnetic head
05/12/1998US5751515 Recording and reproducting head slider having multiple slider rails and a projection portion
05/12/1998US5751513 Method for carrying out seeks in a hard disc drive to limit the generation of acoustic noise
05/12/1998US5751427 Optical gap measuring apparatus and method
05/07/1998WO1998019304A1 Recording/reproducing head, recording/reproducing head positioning mechanism and recorder/reproducer
05/07/1998DE19737155A1 Automation system for manufacture of hard disk drive
05/06/1998EP0840309A2 Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
05/06/1998EP0840301A2 Isolation apparatus for use in disc drive system to mitigate effects of undesired mechanical forces and disc drive system including same
05/06/1998EP0840300A2 Optical disc system having improved circuitry for performing blank sector check on readable disc and method for operating same
05/06/1998EP0840291A2 Rotating disk type information storage apparatus
05/06/1998EP0839373A1 Signal recording apparatus for video device using magnetic recording medium
05/06/1998CN1180896A Disk drive magnetic actuator latch mechanism
05/06/1998CN1180894A Apparatus and method for controlling hard disk driver
05/05/1998US5748583 Information recording/reproducing apparatus with counter means accessible by system and servo processing units
05/05/1998US5748578 Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
05/05/1998US5748410 Slotted flex circuit for a disk drive actuator
05/05/1998US5748409 Welding stress isolation structure for head suspension assemblies
05/05/1998US5748408 Flight slider for magnetic recording
05/05/1998US5748401 Sector servo system data recording/reproducing apparatus without ID portion
05/05/1998US5748400 Method of compensating for the misregistration of the radial track positions of a floppy diskette in a disk drive
05/05/1998US5748398 Method for writing servo signals onto a magnetic disk and magnetic disk drive equipped with magnetic disk(s) having servo pattern recorded by the method
05/05/1998US5745983 Tool for processing magnetic read/write heads
05/05/1998US5745979 Magnetic head for recording with ultra low force
05/05/1998CA2074865C Tribo-attractive contact data storage system
05/05/1998CA2067601C Transducer carrier for disk file and liquid film head-disk interface
04/1998
04/30/1998WO1998018120A1 Method and apparatus using frequency domain read head linearization
04/29/1998EP0838811A2 Analog to digital converter and assembly to normalize servo error signals and multiplex reference voltage inputs and digital outputs and optical drive system including same
04/29/1998EP0838074A1 Air actuated latching mechanism rotationally resistant to rotational shock force
04/29/1998CN1180223A Head feeding mechanism and optical pick-up feeding mechanism