Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
07/1999
07/14/1999CN1222725A Disc apparatus
07/13/1999US5923891 System for minimizing disk access using the computer maximum seek time between two furthest apart addresses to control the wait period of the processing element
07/13/1999US5923501 Carriage structure for disk device
07/13/1999US5923500 One-piece flexure for small magnetic heads
07/13/1999US5923491 Disk drive servo control system with selectable filtering for reduction of repeatable runout
07/13/1999US5923489 Magnetic playback apparatus and method
07/13/1999US5923488 Recording and reproducing device and a recording and reproducing head with a detection element for detecting head off-track
07/13/1999US5923486 Recording and reproducing system for protecting copyrighted data
07/13/1999US5923272 Serial bitstream code for timing-based servo
07/13/1999US5920987 Method of forming a unitary load beam and CAM follower
07/09/1999CA2258382A1 Disk recording or playback device and method of controlling pickup of the device
07/07/1999EP0927990A1 A latching apparatus of hard disk drive using bimetal
07/07/1999EP0927989A1 Magnetic head transferring device of hard disk drive
07/07/1999EP0927418A1 Magnetic read/write head actuator assembly
07/06/1999US5920539 Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor
07/06/1999US5920526 Method for detecting a boundary between recorded and unrecorded areas on an optical disc
07/06/1999US5920448 For information media
07/06/1999US5920445 Flexured mounting system for friction reduction and friction linearization in linear actuator for disk drive
07/06/1999US5920441 Method and apparatus for controlling a multiple-stage actuator for a disk drive
07/06/1999US5920440 Gray code decoding circuit of a hard disk drive
06/1999
06/30/1999EP0926667A2 Disk player
06/29/1999US5917783 Optical disk, a recording/reproducing apparatus and method for the optical disk
06/29/1999US5917782 Method of reproducing high-speed audio data by a CD-ROM player
06/29/1999US5917678 Head slider and recording-and-reproducing apparatus
06/29/1999US5917672 Disk file head positioning servo system incorporating adaptive saturated seek and head offset compensation
06/29/1999US5917671 Recording method and information medium for a plurality of longitudinal track bundles enabling tracking during recording and/or playback of track bundles
06/23/1999EP0924689A2 Control apparatus and method
06/22/1999US5914922 Generating a quadrature seek signal from a discrete-time tracking error signal and a discrete-time RF data signal in an optical storage device
06/22/1999US5914920 Constant angular velocity type optical disk, double density recording method therefor, and reproducing method for such recorded optical disk
06/22/1999US5914916 Methods and apparatus for controlling access to a recording disk
06/22/1999US5914833 Floating type head slider, floating type head device, and disc drive
06/22/1999US5914830 Digital servo control system including sample integrity tester for reducing effects of spurious sampled position values
06/22/1999US5914829 Digital servo control system for use in disk drives, including calibrated controller for fixed-distance seeks
06/22/1999US5914828 System architecture for HDD
06/22/1999US5914168 Magnetic heads
06/17/1999WO1999006992A8 Method and apparatus for increasing the sample rate of a disc drive with low overhead
06/16/1999EP0923078A1 Servo pattern for linear recording servo tracking tape drives and a system and method for sensing position using same
06/15/1999US5912791 Landing zone design for a magnetic disc
06/15/1999US5912789 Cramping structure of guide bar for head carriage in magnetic disk drive
06/15/1999US5912782 System and method for adjusting actuator control current for directional torque variance in a disk drive
06/15/1999US5912778 System for recording and/or reproducing information medium for use in the system and magnetic head for formatting the medium
06/10/1999WO1999028909A1 Optical servo system for a tape drive
06/09/1999EP0921525A2 Disk drive
06/09/1999EP0921520A2 Power transmission system with a gearwheel and a toothed rack
06/09/1999EP0681287B1 Magnetic recording disk
06/09/1999EP0627114B1 Method of reading a recording medium and system using said method
06/09/1999CN1218958A Magnetic head driver for hard disc driver
06/09/1999CN1218955A Power conveying system with gears and rack
06/09/1999CN1218947A Feeder for optic head
06/08/1999US5910865 Slider having terminated side rails with trailing edge cuts
06/08/1999US5910863 Consists of a titanium oxide as major component with other oxide selected from yttrium, magnesium, iron, chromium, zirconium, aluminum, ytterbium, erbium and niobium; higher recording density and accuracy
06/03/1999WO1999027533A1 Impact features on suspensions for improved damage resiliancy in disk drives
06/02/1999EP0919992A1 Method and apparatus for actuator control
06/02/1999EP0919991A2 Magnetic head transferring device of hard disk drive
06/02/1999EP0919326A1 Magnetic head carriage for hard disc drive
06/02/1999EP0919053A2 Suspension with biaxially shielded conductor trace array
06/02/1999CN2322236Y Simple and practical optical head regulating mechanism
06/02/1999CN1218250A Disk recording or playback device and method of adjusting initial position of pickup thereof
06/01/1999US5909661 Method and apparatus for decomposing drive error signal noise sources
06/01/1999US5909336 Position detection scheme for headerless disk controller
06/01/1999US5909333 Servo-writing system for use in a data recording disk drive
05/1999
05/26/1999EP0918327A1 Disk drive
05/26/1999EP0918320A1 Suspension for head assembly
05/26/1999CN1217535A Optical-disk drive device and control method for optical-disk drive
05/26/1999CN1217531A Cantilever of magnetic head assembly
05/26/1999CN1043492C Rotary actuator disk drive with identical dual-element read/write transducers
05/25/1999US5907859 Storage device in which read/write operation is controlled in response to source voltage
05/25/1999US5907527 Apparatus for reproducing data stored on an optical disk
05/25/1999US5907457 For writing/reading a magnetic disk
05/25/1999US5907452 Apparatus and method to dampen flex cable vibration to disk drive actuator
05/25/1999US5907450 Pre-read learning digital servo-control device
05/25/1999US5907449 Position sunsitivity adjusting method for disk apparatus and a disk apparatus using the same
05/25/1999US5907448 Magnetic disk device and method of manufacturing same having convex recordings regions, concave guard bands, and impressed concavities and convexities representing control signals
05/25/1999US5907447 Radial self-propagation pattern generation for disk file servowriting
05/25/1999US5907445 Apparatus and method for controlling hard disk drive-locating position by counting sectors
05/20/1999WO1999024971A2 Magnetic recording/reproduction device
05/20/1999WO1999024970A2 Slider and electro-magnetic coil assembly
05/19/1999EP0917134A2 Magnetic recording apparatus
05/19/1999EP0917131A2 Servo-burst gray code pattern
05/19/1999EP0916184A2 Automatic gain control circuit, e.g. for use in a hard disk drive
05/19/1999EP0775355B1 Actuator arm assembly with self-locking arm
05/18/1999US5905705 Disc device having eccentricity measurement and clock correction
05/18/1999US5905608 Dynamically tuned outer arms for improved rotary actuator performance
05/18/1999US5905607 Return path geometry to enhance uniformity of force on a linear actuator
05/18/1999US5905603 Magnetic recording medium magnetic head positioning method, and magnetic recording apparatus
05/18/1999US5903969 Floating magnetic head and method for producing same
05/12/1999EP0915466A2 Servo sector architecture for a high-density, removable media-type disk
05/12/1999EP0915457A2 Optical disc drive apparatus and optical disc drive control method
05/12/1999EP0915455A1 Disk drive carriage assembly
05/12/1999EP0915454A1 Magnetic disk drive
05/11/1999US5903411 Method for reliably positioning a head in a disk drive to a guard band area
05/11/1999US5903410 Disk drive using multiple servo timing marks that form a code of unique interrelated bit patterns
05/11/1999US5903408 Data recording/reproducing apparatus having track interference reduction mechanism
05/11/1999US5903404 High density disk unit and disk medium
05/11/1999US5903085 Tester for testing a recording head
05/11/1999US5901430 Method of making integral static compensation features
05/06/1999WO1999022369A1 Compensation for repeatable run-out error
05/06/1999EP0913811A1 Edge blending for flat tape bearing surface tape heads
05/04/1999US5901126 Disk reproducing apparatus having a disk diameter determining function
05/04/1999US5901124 Optical disk, a recording/reproducing apparatus and method for the optical disc