| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 06/19/1991 | EP0432733A2 Flying head slider assembly |
| 06/19/1991 | EP0432278A1 Seek control apparatus |
| 06/18/1991 | US5025440 Dual side disc player having a pickup reversing mechanism |
| 06/18/1991 | US5025437 Interlocking braking and lock mechanisms for scanning apparatus of an information processing system |
| 06/18/1991 | US5025371 Overload protected rack and pinion drive for an optical scanning device |
| 06/18/1991 | US5025336 Disk drive apparatus |
| 06/18/1991 | US5025335 Architecture for 21/2 inch diameter single disk drive |
| 06/18/1991 | US5025330 Head positioning control system and method for a memory device using even and odd track cross pulses |
| 06/18/1991 | US5025147 Laser light |
| 06/18/1991 | CA1285067C Carriage latch for a disc drive |
| 06/12/1991 | EP0431787A2 Self-synchronizing servo control system and servo data code for high density disk drives |
| 06/12/1991 | EP0431577A2 Data transducer positional apparatus |
| 06/11/1991 | US5023862 Apparatus for locking a pickup unit of a disc player for a vehicle |
| 06/11/1991 | US5023861 Single stage tracking actuator apparatus for optical beam information storage drive system |
| 06/11/1991 | US5023736 Magnetic latch for disk drive actuator |
| 06/11/1991 | US5023735 Magnetic head support device with double gimbal structure |
| 06/11/1991 | US5023732 Magnetic disk apparatus having a circuit for detecting the position of servo information recorded on a magnetic disk |
| 06/05/1991 | EP0430456A2 Track jump control devices |
| 06/05/1991 | EP0430378A2 Lightweight rigid compact configuration for the voice coil carriage and printed circuit cable in a disc drive |
| 06/05/1991 | CN2078482U Protector for microcomputer hardware disc |
| 06/04/1991 | US5021906 Programmable air bearing slider including magnetic read/write element |
| 06/04/1991 | US5021898 Head positioning control method and apparatus |
| 05/30/1991 | WO1991007747A1 Actuator assembly for optical disk systems |
| 05/28/1991 | US5020044 Head positioning system for use in information recording/reproducing device with means for deriving track crossing signal from tracking error signal |
| 05/28/1991 | US5019932 Hard disk drive having a carriage lock mechanism |
| 05/28/1991 | US5019931 Mechanism for suspending a head slider of a recording apparatus |
| 05/28/1991 | US5019930 Negative-pressure type magnetic head slider, and method of producing the same |
| 05/22/1991 | EP0428325A2 Positioning separate read and write heads in a disk file |
| 05/22/1991 | EP0428308A2 Tracking control circuit |
| 05/22/1991 | EP0428289A2 Magnetic head suspension assembly in a disk drive |
| 05/22/1991 | EP0428288A2 An actuator structure for a magnetic head suspension assembly in a disk drive |
| 05/22/1991 | EP0427927A2 Track position syncopation cancellation in a disk drive |
| 05/21/1991 | US5018122 Linear motor actuator for moving an optical read/write head |
| 05/21/1991 | US5018035 Disc storage apparatus having an arcuate pivot assembly |
| 05/21/1991 | US5018033 Guide mechanism for head transfer apparatus |
| 05/21/1991 | CA1284378C Limit stop control for a disc memory drive |
| 05/16/1991 | WO1991006947A1 Multiple actuator disk drive |
| 05/15/1991 | EP0427490A2 Disk drive apparatus |
| 05/15/1991 | EP0427259A2 Track access control methods and apparatus for disk drives |
| 05/14/1991 | US5016238 Linear actuator for radial access in disk recorder/player |
| 05/14/1991 | US5016126 Device for controlling an access operation of an information recording and reproducing device |
| 05/08/1991 | EP0426447A2 Track jump control circuit |
| 05/08/1991 | EP0426162A2 A disk player |
| 05/08/1991 | EP0425916A2 Programmable air bearing slider including magnetic read/write element |
| 05/07/1991 | US5014146 Magnetic head mounting arm having asymmetrical configuration |
| 05/07/1991 | US5014145 Head arm structure mounting a circuit element in a magnetic disc device |
| 05/07/1991 | US5014142 Magnetic disk apparatus with head supporting structures of different proper oscillations |
| 05/07/1991 | US5014139 Reference track detection for a disc storage unit |
| 05/07/1991 | CA1283975C Compensation method to correct thermally induced off-track errors in disc drives |
| 05/02/1991 | WO1991006096A1 Disk drive servo system using gain limited high-frequency track-following compensator |
| 05/02/1991 | EP0425042A1 Method of and device for detecting parameters of a digitally controllable processing circuit for controlling the scanning of a data carrier |
| 05/02/1991 | EP0424980A2 Optical disk drive device and information storage device |
| 05/02/1991 | EP0424978A2 Optical disk drive device and information storage device |
| 04/30/1991 | US5012460 RAM head positioning and tracking system |
| 04/30/1991 | US5012374 Recording and/or reproducing apparatus in which the position of head means relative to the record bearing medium is controlled between two positions |
| 04/30/1991 | US5012372 Head access mechanism for moving heads |
| 04/30/1991 | US5012370 Head lifting and damper mechanism for disc drive unit |
| 04/30/1991 | US5012366 Magnetic head supporting device |
| 04/30/1991 | US5012363 Servo pattern writing method for a disk storage device |
| 04/30/1991 | CA1283733C Direct access storage unit |
| 04/24/1991 | EP0423731A2 Track access device and tracking control device |
| 04/24/1991 | EP0423662A2 High track density magnetic media with pitted optical servo tracks and method for stamping the tracks on the media |
| 04/24/1991 | EP0423661A2 Dual magnetic head and method for writing on very high track density and conventional track density floppy disk |
| 04/23/1991 | US5010582 Pickup driving device for disk player |
| 04/23/1991 | US5010535 Apparatus and process for measuring data disk runout and acceleration parameters |
| 04/23/1991 | US5010425 Access controller for controlling the seek operation of a head relative to a recording medium |
| 04/23/1991 | US5010423 Tracking device and method |
| 04/17/1991 | EP0363419A4 Latch mechanism for disk drives |
| 04/16/1991 | US5008876 Carriage lock apparatus |
| 04/10/1991 | EP0421591A2 Method for depositing a protective film on a disk file slider |
| 04/04/1991 | WO1991004557A1 Method and apparatus for seek control of disk apparatus |
| 04/03/1991 | EP0420693A2 Disk data storage system with head positioning system |
| 04/03/1991 | EP0420660A2 A disc medium and a disc memory apparatus for reading information from said medium |
| 04/03/1991 | EP0420440A1 A method of and system for demodulating position information signals provided by a transducer |
| 04/03/1991 | EP0420439A1 Method of and apparatus for determining the position of a transducer |
| 04/03/1991 | EP0420438A1 A method of and apparatus for detecting position error of a transducer |
| 04/03/1991 | EP0124580B1 Fine and coarse servo system for access and tracking on an optical disk |
| 04/02/1991 | CA1282492C Disk file with in-hub motor |
| 03/27/1991 | EP0418858A2 Method of recording/reproducing information for rotary-type information recording/reproducing apparatus |
| 03/26/1991 | US5003422 Magnetic head locking mechanism |
| 03/26/1991 | US5003420 Low profile head-load beam slider arm for disk drive |
| 03/26/1991 | US5003419 Magnetic head supporting mechanism |
| 03/26/1991 | US5003415 Adaptive head positioning servo-mechanism |
| 03/26/1991 | US5003414 Digital signal reproducing apparatus having improved pilot level compensation control |
| 03/26/1991 | US5003412 Method and apparatus for positioning a read/write mechanism |
| 03/21/1991 | WO1991003814A1 Seek circuit of optical disk |
| 03/20/1991 | CN1050116A Digital transmission system using subband coding of digital signal |
| 03/20/1991 | CN1012114B Expandable suspension for supporting a slider and moving it to the disk in a data recording disk file |
| 03/19/1991 | US5001732 Track counter for optical disk |
| 03/19/1991 | US5001584 Head-positioner arm for data recorders |
| 03/19/1991 | US5001579 Method and apparatus for centering a transducer over a recorded track on a rotary storage medium |
| 03/19/1991 | US5001578 Method and system for controlling disk recording and reproduction apparatus for reduced power consumption |
| 03/19/1991 | US5001570 Multispeed reproducing control apparatus of a video disk player for reproducing at a variety of reproducing speeds from a CLV disk |
| 03/13/1991 | EP0416920A2 Information processing method and information processing device |
| 03/12/1991 | US4999725 Read/write head carrying mechanism for floppy disk drive |
| 03/07/1991 | WO1991003049A1 Seek control apparatus |
| 03/06/1991 | EP0414702A1 Voice coil actuator. |
| 03/06/1991 | EP0414694A1 Estimator positioning system and method. |
| 03/05/1991 | US4998174 Floating type magnetic head assembly |
| 03/05/1991 | CA1281131C Method and apparatus for controlling transducer |