Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
07/2002
07/03/2002CN1357144A Actuator bearing cartridge for disc storage system
07/03/2002CN1357139A Repeatable runout compensatino using iterative learning control in disc storage system
07/03/2002CN1357138A Servo processor code evaluation using virtual disc drive
07/03/2002CN1357137A PQ dual stage servo controller
07/03/2002CN1357083A Active magnetic bearing system for improved servo control
07/03/2002CN1087094C Magnetic disk drive
07/03/2002CN1087090C Phase-shaift and tilt adjustable disk player
07/02/2002US6414933 Mechanism for feeding a pickup carriage of a recording medium reproducing device
07/02/2002US6414823 Coil-structures for magnetic microactuator
07/02/2002US6414822 Magnetic microactuator
07/02/2002US6414821 Magnetic head support mechanism and magnetic disk drive
07/02/2002US6414815 Apparatus and method for controlling on-track operation of an actuator in a hard disk drive
07/02/2002US6414813 Rotational acceleration correction in a disc drive
07/02/2002US6414812 Medium replacement type disc apparatus
07/02/2002US6414809 Data storage device servo control apparatus and method
06/2002
06/27/2002WO2002050835A1 Suspension and disk device
06/27/2002WO2002050819A1 Self-positioning magnetic latch
06/27/2002US20020081106 Circuit for the speed recovery of a direct current motor and method using said circuit
06/27/2002US20020080699 Method of detecting amount of rotational vibration generated from the rotation of disk
06/27/2002US20020080690 Method for providing track position and identification information for data storage devices
06/27/2002US20020080532 Suspension for disc drive
06/27/2002US20020080528 Information recording and reproducing apparatus
06/27/2002US20020080527 Multilayer suspension, head gimbal assembly and manufacturing method of head gimbal assembly
06/27/2002US20020080515 Magnetic disk apparatus
06/27/2002US20020080512 Recording medium driving device
06/27/2002US20020080509 Method and apparatus using track scan data to qualify heads based on PES linearity
06/26/2002EP1217618A1 Optical disc apparatus and method for adjusting a servo of same
06/26/2002EP1217615A1 Digital servo control system for a hard disc drive using a voice coil motor in voltage mode
06/26/2002CN1086830C Method and device for measuring disc speed
06/25/2002US6412042 System and method for improved disk drive performance and reliability
06/25/2002US6411590 Disc reproducing apparatus
06/25/2002US6411589 System and method for forming electrostatically actuated data storage mechanisms
06/25/2002US6411582 Disk player
06/25/2002US6411572 Method and apparatus for efficient measurement of optical pickup sled mechanism parameters
06/25/2002US6411471 Low friction bearing pivot for disc drive
06/25/2002US6411468 Pseudo-contact negative pressure air bearing slider with dual negative pressure pockets and central transducer
06/25/2002US6411464 Magnetic head including sliding member having bearing surface formed of protrusions with almost flat tips
06/25/2002US6411460 Postponable servo code selection
06/25/2002US6411459 Advanced servo writing method for hard disc drives
06/25/2002US6411458 Disk drive employing method of monitoring transducer flying height to retire defective data site on recording surface
06/25/2002US6411454 Head control for disc drive apparatuses, systems and processes
06/25/2002US6411056 System and method for stabilizing disk drive rotation control
06/25/2002US6408677 Calibration disk having discrete bands of composite roughness
06/20/2002WO2001043122B1 Magnetic disc having physical servo patterns with a magnetic carrier, and method of making and using the same
06/20/2002US20020076766 Novel glucosaminidase
06/20/2002US20020075787 Pickup guide shaft adjusting device
06/20/2002US20020075773 Optical pickup for optical disk drive and driving method thereof
06/20/2002US20020075606 Suspension for disc drive
06/20/2002US20020075605 Suspension for disc drive
06/20/2002US20020075604 Self-positioning magnetic latch
06/20/2002US20020075603 Information recording and reproducing apparatus
06/20/2002US20020075601 Head slider for recording disk drive
06/20/2002US20020075593 Self adjusting GMR proximity recording ABS feature
06/20/2002US20020075591 Drive level flow-field conditioning to reduce flow field turbulence
06/20/2002US20020074963 Disk drive servo arm retract and spindle brake circuit
06/20/2002US20020074902 Method of bonding piezoelectric element and electrode, and piezoelectric microactuator using the bonding method
06/19/2002EP1215676A1 Method and circuit for operating a voice coil actuator of a mass data storage device
06/19/2002CN1354881A Seek recovery using different servo pulse data qualificatino modes
06/19/2002CN1354874A Edge contact protection feature for disc drive head
06/19/2002CN1354478A Recording head support arm assembly, optical disc with same and method for making recording head support arm assembly
06/19/2002CN1354459A Magnetic disk device and manufacturing method thereof
06/19/2002CN1354458A Method and equipment for assembling magnetic head arm, base flat-plate structure and transmission system
06/19/2002CN1086499C Method for incorporating disk media into magnetic disk drive
06/19/2002CN1086496C Asynchronous digital PES demodulation disk drive servo control system
06/18/2002US6407892 Magnetic recording and reading device
06/18/2002US6407889 Suspension with readily manufacturable vertically and laterally offset lifter
06/18/2002US6407888 Transverse slot mounting of head/gimbal suspension assemblies in disc drives
06/18/2002US6407877 Recording/reproducing method and apparatus in which head driver is unlocked when medium is loaded and when track position information formulation based on optical signal input has been completed
06/18/2002US6406191 Pivot assembly
06/13/2002WO2002047083A2 Servo data detection with improved phase shift tolerance
06/13/2002WO2002011128A3 Magnetic scanning system
06/13/2002US20020071221 Hard disk apparatus
06/13/2002US20020071220 Magnetic disk drive having arm displacement limit mechanism for shock resistance
06/13/2002US20020071219 Magnetic disk drive with a movable ramp mechanism for relieving impact upon loading and unloading
06/13/2002US20020071218 Suspension and head gimbal assembly with the suspension
06/13/2002US20020071217 Floating-type head slider and recording/reproducing apparatus employing the same
06/13/2002US20020071203 Disk drive apparatus, hard disk drive, and enclosure for hard disk drive
06/13/2002US20020071202 Disk unit with increased head-positioning accuracy
06/13/2002US20020071199 Magnetic disc storage apparatus
06/13/2002US20020071198 Method to achieve higher track density by allowing only one-sided track encroachment
06/13/2002US20020071197 Actuator of disc drive having shock damping device
06/13/2002US20020071196 Fly height detector
06/12/2002EP1213708A2 Disk unit with increased head-positioning accuracy
06/12/2002EP0799477B1 Magnetic head sub-ambient air pressure slider for a disk drive device or the like
06/11/2002US6404605 Magnetic recording and reading device
06/11/2002US6404599 High-performance integrated microactuator, particularly for a hard disk read/write transducer
06/11/2002US6404596 Overmolding stiffening technique and structure
06/11/2002US6404592 Magnetic head producing method
06/11/2002US6404576 Method and system for compensation of nonlinearity or fluctuation of head-position signal
06/11/2002US6404570 Disk drive with adaptive channel optimization
06/11/2002US6404504 Method and apparatus for measuring flying height of the slider and in-situ monitoring a slider-disk interface
06/06/2002WO2002045088A1 Position controller and controlling method, optical disc recorder and recording method and optical disc reproducer and reproducing method
06/06/2002WO2001097221A3 Drive level flow-field conditioning to reduce flow field turbulence
06/06/2002US20020067685 Actuator loading/unloading device for disc drive
06/06/2002US20020067684 Disk player
06/06/2002US20020067563 Position sensing system for a disc drive using micro-servo sectors and side-by-side R/W recording elements
06/06/2002US20020067562 Control method and apparatus for reducing the effects of hard disk contamination
06/06/2002US20020067561 Method for detecting mechanical damage in a parking zone of a hard disk drive
06/05/2002EP1211683A2 Servo defect management scheme in hard disk drives
06/05/2002EP1210715A1 Magnetic sensing of motion in microfabricated devices