Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
06/1994
06/21/1994US5323368 Track crossing apparatus and method using the difference between pick-up velocity and a predetermined velocity
06/21/1994US5323284 Magnetic transducer receiver for a disk drive
06/21/1994US5323283 Floating magnetic head slider
06/21/1994US5322987 Pneumatic hub locking device for etching optical servo tracks on magnetic disks
06/21/1994US5321882 Slider fabrication
06/15/1994EP0436656B1 Single stage seek method
06/14/1994US5321824 Accessing last recorded data in a continuation chain
06/14/1994US5321677 High-speed search apparatus for use with a video disk player
06/14/1994US5321676 Record carrier scanning apparatus wherein the scanning head is positioned without feedback and a predetermined range of fine positioning of the scanning point is maintained
06/14/1994US5321568 Head suspension assembly with improved pitch and roll characteristics
06/14/1994US5321564 Data head offset detecting circuit in magnetic disk unit and magnetic disk unit using said data head offset detecting circuit
06/14/1994US5321560 Embedded servo system for low power disk drives
06/09/1994WO1994012976A1 Apparatus and method for reducing effects of slip/stick in a disk drive head assembly
06/08/1994EP0600737A2 Disc device
06/08/1994EP0600706A1 Voice coil driver with variable gain in seek and track-follow modes
06/08/1994EP0600623A2 Servo loop control
06/08/1994EP0600409A2 Magnetic disk unit
06/08/1994EP0600348A2 Air bearing magnetic head sliders
06/08/1994CN1024965C Disc drive having improved linear actuator
06/07/1994US5319625 Apparatus using demodulators to detect crosstalk from a signal read from a recording medium
06/07/1994US5319512 Positioning device for positioning a read/write head of a disc storage system
06/07/1994US5319510 Disc recording and/or reproducing apparatus
06/07/1994US5319509 Method and apparatus for controlling and analyzing a data storage system
06/07/1994US5319507 Recording/reproducing system using a flexible magnetic disk
06/01/1994EP0599669A2 Magnetic head supporting mechanism
06/01/1994EP0599563A1 A low friction bearing
06/01/1994EP0599392A1 Scanning device with two-stage controller for positioning a scanning point
05/1994
05/31/1994US5317559 Dual pivot disc drive apparatus and method
05/31/1994US5317553 Optical disc recording and/or reproducing apparatus having a buffer memory to accommodate track jumps
05/31/1994US5317468 Magnetic disk having reserve servo sectors and plural reserve tracks
05/31/1994US5317465 Negative pressure air bearing slider with a choke for restricting air flow
05/31/1994US5317461 Magnetic disk apparatus having a circuit for detecting a position of servo information recorded on a target track
05/31/1994US5317457 Digital signal recording method
05/26/1994WO1994011871A1 Plug-in actuator latch mechanism
05/26/1994WO1994011863A1 Removable cartridge disk drive with a 1.8 inch form factor
05/25/1994EP0598594A2 Disk drive system controller
05/25/1994EP0598593A2 An arrangement for attaching a head/flexure assembly to a mounting arm in a disc drive
05/25/1994EP0598503A2 Magnetic recording materials
05/25/1994CN1024711C Bifurcated air bearing actuator assembly for disk drive system
05/24/1994US5315571 Information recording and reproducing device providing faster access time to a recording medium
05/24/1994US5315568 Apparatus and method for accessing sectors of a rotating disk
05/24/1994US5315467 Head actuator pivoting around stationary shaft and dish having such head actuator
05/24/1994US5315465 Compliant pivot mechanism for a rotary actuator
05/24/1994US5315464 Disk apparatus and manufacturing method thereof
05/24/1994US5315458 Method and apparatus for positioning head on reference track of disk medium
05/24/1994US5315455 Data recording/reproducing apparatus
05/24/1994US5315454 Loading method of magnetic head and magnetic disc apparatus
05/18/1994EP0597708A2 Flexure in a disc drive, a disc drive and method of manufacture
05/18/1994EP0597697A1 Tracking servo circuits
05/18/1994EP0597665A2 Disc drive latch
05/18/1994EP0597189A2 Low profile rotary actuator structure for a hard disk drive
05/18/1994EP0597171A1 Improved system for read head positioning
05/18/1994EP0597042A1 Magnetic head drive device.
05/18/1994EP0515438B1 Process for converting an analog voltage to a digital value
05/17/1994US5313451 Information recording/reproducing apparatus with STM cantilever probe having a strain gauge
05/17/1994US5313446 Disc drive device having a head carriage
05/17/1994US5313445 Reproducing apparatus with suspension supporting a floating-type head with a bevelled slider
05/17/1994US5313355 Flexure mounting system for hard disc drives
05/17/1994US5313354 Disc drive latch housing having improved vibration dampening
05/17/1994US5313353 Magnetic head suspension united support arm with ribbed cut-out
05/17/1994US5313352 Magnetic disk slider having piezo-electric vibration elements
05/17/1994US5313350 Plug-in actuator latch mechanism
05/17/1994US5313124 Return plate for a voice coil motor in a disk drive
05/11/1994EP0278006B1 A disc device and a disc-like recording medium
05/11/1994CN1086625A Disk drive servo system
05/10/1994US5311497 Pickup feeding apparatus for a double-sided reproducing disc player
05/10/1994US5311390 Apparatus for precise positioning of a tape head and programming thereof
05/10/1994US5311381 Method and apparatus of automatically tracking a recording medium
05/10/1994US5311379 Method and system for positioning head on target cylinder of disk
05/10/1994US5311287 Direct access storage device with head-disc dynamics monitor
05/10/1994US5309624 Method of making a disc recording and/or reproducing apparatus
05/04/1994EP0595513A2 Negative pressure air bearing slider
05/04/1994EP0595349A1 Optical disk
05/04/1994EP0595249A2 Magnetic disk controller capable of avoiding erroneous write operation
05/03/1994US5309418 Track counting device using a PLL
05/03/1994US5309303 Subambient pressure air bearing slider for disk drive
05/03/1994US5309299 Method and system for position error signal generation using auto correlation
05/03/1994US5307703 Head adjusting device
05/03/1994CA2011384C Track access control apparatus for optical disk apparatus
04/1994
04/28/1994WO1994009490A1 Flux generator for a rotary actuator motor with an integrated actuator latch for a disk drive
04/28/1994WO1994009489A1 Passive non-contact magnetic latch
04/27/1994EP0594522A1 Disk drive servo system
04/26/1994US5307489 Seek system for a magnetic disk apparatus
04/26/1994US5307339 Translating apparatus for an optical pickup device
04/26/1994US5307333 Track servo pull-in method and apparatus for an optical disc
04/26/1994US5307330 Settling monitor system for a following servo
04/26/1994US5307224 Magnetic disk storage unit with magnetic head separating mechanism for separating float type magnetic head from magnetic disk
04/26/1994US5307216 Sector identification method and apparatus for a direct access storage device
04/21/1994DE4334773A1 Information reproduction appts., esp. for audio data - picks up data stored on e.g. magneto-optical disc and stores data in ROM
04/21/1994DE3348393C2 Disc information playback system reading optical digital data
04/20/1994EP0593210A2 Track width error inspector apparatus
04/20/1994EP0593174A2 Dual actuator DASD
04/20/1994CN1085679A Magnetic head susppension assembly fabrricated with integral load beam and flexre
04/19/1994US5305299 Support mechanism for optical block in optical disc drive apparatus
04/19/1994US5305169 Rotary actuator disk drive
04/19/1994US5305165 Tribo-attractive contact data storage system
04/19/1994US5305161 Adaptive track seeking for disk drives
04/19/1994US5305160 Compensating for variations in torque capability of voice coil motors
04/19/1994US5305157 Read circuit providing two different reference levels for reading the servo sectors and data sectors of a rotating data storage disk
04/13/1994EP0592219A1 Magnetic head for magneto-optical recording, and magneto-optical recording apparatus