Patents
Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963)
05/1992
05/10/1992CA2095829A1 Magnetic head suspension
05/06/1992EP0484154A2 Inserting and separating frequency folding information
05/06/1992EP0304467B1 Fine positioning for disk drive
05/06/1992CN1060919A Method and apparatus for positioning transducers
05/05/1992US5111441 Apparatus for generating magnetic field varying in response to an information signal
05/05/1992US5111349 Digital servo system for moving body by a distance equal to an integral multiple of a predetermined pitch
05/05/1992US5111088 Guide rail mounting structure
04/1992
04/30/1992WO1992007355A1 Apparatus for, and methods of, recording signals in tracks on a memory member
04/30/1992WO1992007354A1 Apparatus for analyzing a data storage system
04/29/1992EP0482645A2 Optical recording system
04/28/1992US5109502 Head exchange system for disc drive system controlling busy signals in accordance with head offset
04/28/1992US5109366 Slip-off preventing tracking control apparatus
04/28/1992US5109365 Record information reproducing method with content identifiers
04/28/1992US5108184 Non-invasive laser positioning system for rotary actuators
04/22/1992EP0481654A2 Information reproduction apparatus
04/22/1992EP0481498A2 Information recording unit and apparatus and method for information recording/reproduction
04/22/1992EP0481486A2 Stepping motor control circuit
04/22/1992CN1060549A Transducer head skew arrangement for disk drive system
04/21/1992US5107383 Transducer supporting device for supporting a transducer in a rotary disk storage unit
04/21/1992US5107099 Magnetic card reader and method
04/15/1992EP0480761A2 Track crossing detector for optical disk
04/15/1992EP0480578A1 Magnetic disk device
04/15/1992EP0480268A2 Disk reproduction apparatus and track search method
04/14/1992US5105406 Track-jumping servo apparatus for disc-shaped optical record medium
04/14/1992US5105402 Disc player with manual search function
04/14/1992US5105318 Head positioning device for use in magnetic disk equipment
04/14/1992US5104483 Having stable uniform separation between slider and surface of magnetic disk
04/09/1992DE4131955A1 Magnetic head for disc drive - has triangular frame support with temperature compensator insert having different expansion coefficient
04/08/1992EP0479703A1 Method and apparatus for positioning transducers
04/08/1992EP0479701A2 Transducer head skew arrangement for disk drive system
04/08/1992EP0479547A2 Rigid disk and signal recording and reproducing method using same
04/08/1992EP0479475A2 Disk storage apparatus
04/08/1992EP0305498B1 Crash-prevention for disk drive positioning system
04/07/1992US5103440 Track access error correction apparatus for moving an optical head from one track location to another track location on an optical disc
04/07/1992US5103362 Method of electrostatically sensing track position information for magnetic recording medium
04/07/1992US5103360 Magnetic recording and/or reproducing apparatus in which a head and a recording medium are detached from each other pursuant to the position of the head confronting the medium
04/01/1992EP0478314A2 Optical disk drive apparatus including tracking error signal calibration
04/01/1992EP0478312A2 Optical disk drive initialisation method
04/01/1992EP0478276A2 Disk storage system
04/01/1992EP0478227A1 Recovery of track following operation in an optical disk drive apparatus
04/01/1992EP0477915A2 Device for detecting traveling speed of pickup
03/1992
03/31/1992US5101390 Track-jump device for a disc drive apparatus
03/29/1992CA2052100A1 Device for detecting traveling speed of pickup
03/29/1992CA2046721A1 Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm
03/26/1992DE4029975A1 Circuitry generating clean track crossover signals in disc memories - using PLL to produce estimated value from received pulses and avoid risk of false signal being produced
03/25/1992EP0476723A2 Data reproducing method and device
03/24/1992US5099373 Head actuator having a plurality of head arms and load springs for disc drive and storage system, and related method assembly
03/24/1992US5097584 Method for predicting twist out torque in a swage mount
03/19/1992WO1992005543A1 Digital servo control system for use in disk drives
03/18/1992EP0475365A2 Tracking method for memory apparatus
03/18/1992EP0474987A2 Disk reproducing apparatus equipped with a pickup device capable of reading both sides of a disk
03/17/1992US5097370 Subambient pressure air bearing slider for disk drive
03/17/1992US5097369 Magnetic head air-bearing slider
03/17/1992US5097368 Information storage system
03/17/1992US5097365 Automatic tracking apparatus for magnetic disk playback head
03/17/1992US5097361 Controlling position of a rotatable transducer in devices employing such transducers
03/15/1992WO1992005542A1 Improved reverse rail head suspension
03/15/1992CA2091260A1 Reverse rail head suspension
03/11/1992EP0474433A1 Information processing method and apparatus
03/10/1992US5095470 Capacitance detection control circuit for positioning a magnetic head close to a magneto-optical disk
03/10/1992US5095395 Magnetic disk storage device having a return mechanism for automatically positioning heads to non-data area
03/10/1992US5095394 Tracking method for digital signal reproducing apparatus
03/10/1992US5095393 Tri-phase servo pattern for providing positioning information in a magnetic disk drive
03/10/1992CA1297189C Optical data recording/reproducing apparatus
03/04/1992EP0473413A2 Magnetooptical recording apparatus
03/04/1992EP0473305A1 Disc-shaped recording media and recording/reproducing apparatus therefor
03/04/1992EP0472603A1 Improved magnetic disk drive apparatus and method
03/04/1992CN1059223A Disc-shapeo recording medium and recording reproducing apparatus therefor
02/1992
02/26/1992EP0472397A1 Apparatus and method of reproducing synchronization signal in disc storage system
02/25/1992US5091880 Memory device
02/25/1992US5091806 Rotating magnetic recording medium recording/playback apparatus
02/20/1992WO1992002929A1 Sample data position error signal detection for digital sector servo
02/19/1992EP0471367A2 Servo signal recording method and apparatus
02/19/1992EP0471314A1 Edge servo for disk drive head positioner
02/19/1992EP0471101A1 Method and apparatus for the positioning of a magnetic head on a magnetic memory surface
02/18/1992US5090002 Positioning systems employing velocity and position control loops with position control loop having an extended range
02/18/1992US5089999 Disc control apparatus
02/18/1992US5089757 Synchronous digital detection of position error signal
02/12/1992EP0470792A1 Method of digital signal recording
02/12/1992EP0470400A2 Data head positioning signal generating method and apparatus therefor
02/12/1992EP0470349A2 A disk drive in which magnetic head-to-disk capacitive coupling is eliminated
02/12/1992CN1015496B Magnetic head air bearing slider
02/11/1992US5088075 Optical disk apparatus with shortened access time and rotated method
02/11/1992US5087997 Position control system for read/write device
02/05/1992EP0469553A1 Disk controller including format control unit instructing directly jump back operation
02/05/1992EP0469319A2 A non-invasive laser positioning system for rotary actuators
02/05/1992EP0469191A2 Gear drive carriage and stepper adjustment system
02/04/1992CA1295419C Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
02/04/1992CA1295418C Combined magnetic channel signal sensor and servo control track following system and method
01/1992
01/28/1992US5084793 Mechanical apparatus having a mechanism for preventing conglutination of contact parts
01/28/1992US5084661 Position control system for information storage system
01/22/1992EP0467615A2 Magnetic storage system and method of operation
01/22/1992EP0467556A1 Disk apparatus and manufacturing method thereof
01/22/1992EP0467511A1 Apparatus for centering a transducer over a track on a magnetic disk in a disk drive system
01/21/1992US5083230 Access mechanism for magnetic disk apparatus
01/21/1992US5083229 Disk drive with minimized head-arm excursions
01/21/1992US5083228 Tracking error detecting circuit
01/21/1992US5083227 Arrangement for reproducing an electric signal
01/21/1992US5082827 Recording head suspension utilizing superconductor means
01/21/1992CA2047356A1 Disk apparatus and manufacturing method thereof