| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 01/16/1992 | DE4121905A1 Dynamic damping for magnetic read-write head mountings - uses cavities containing mobile solids, liquid or power to absorb oscillations in head positioning hardware and improve surface tracking |
| 01/15/1992 | EP0466502A1 Head slider for magnetic disk drive device |
| 01/15/1992 | EP0290524B1 Circuit for automatic setting of the gain in a control circuit |
| 01/14/1992 | US5081618 Double-sided reproducing disk player |
| 01/14/1992 | US5081616 Positioning controller |
| 01/14/1992 | CA2046993A1 Head slider for magnetic disk drive device |
| 01/08/1992 | EP0464992A1 Adaptive track seeking for disc drives |
| 01/08/1992 | EP0464986A2 Tracking servo apparatus |
| 01/08/1992 | EP0464787A2 Storage device |
| 01/08/1992 | EP0464520A1 Hard disk driver including a flying head slider |
| 01/07/1992 | US5079756 Track-jump device for a disc drive apparatus |
| 01/07/1992 | US5079661 Magnetic head assembly having consistent track pitch |
| 01/07/1992 | US5079659 Gimbal for supporting a hydrodynamic air bearing slider |
| 01/07/1992 | US5079657 Textured air bearing surface |
| 01/07/1992 | US5079653 Information storage disc transducer position control system using last step damping |
| 01/02/1992 | EP0463959A1 Optical disk apparatus |
| 01/02/1992 | EP0463820A2 Disk drive apparatus and a seek method for spiral tracks |
| 01/02/1992 | EP0463819A2 Optical information recording/reproducing apparatus |
| 01/02/1992 | EP0463720A2 Methods and apparatus for optimizing track seeking operations |
| 01/02/1992 | EP0463631A2 Positioning device for the disc running gear of a disc store |
| 01/02/1992 | EP0463336A2 Disk-drive crash stop |
| 12/30/1991 | CA2041866A1 Adaptive track seeking for disc drives |
| 12/30/1991 | CA2035281A1 Gear drive carriage and stepper adjustment system |
| 12/27/1991 | EP0462561A2 Optical recording and playback device |
| 12/27/1991 | CA2041146A1 Methods and apparatus for optimizing track seeking operations |
| 12/26/1991 | WO1991020077A1 Optical servo system for magnetic disk |
| 12/24/1991 | US5074029 Method for stringing wire on an actuator arm |
| 12/18/1991 | EP0461915A2 Method and apparatus for performing a seek |
| 12/18/1991 | EP0461914A2 Restraint of uncontrolled movement of moving device |
| 12/18/1991 | EP0305474B1 Voice coil linear actuator |
| 12/18/1991 | CN1057123A Controlling position of rotatable transducer in devices employing such transducers |
| 12/18/1991 | CN1015138B Magnetic head supporting device for magnetic tap recorder |
| 12/17/1991 | US5073885 Optical memory disc driving apparatus |
| 12/17/1991 | US5073880 Information recording/reproducing method and apparatus |
| 12/17/1991 | US5073835 Head tracking system with memory for storing correct tracking positions |
| 12/17/1991 | US5073834 Disk file or tape drive with high servo sample rate embedding additional servo sectors within individual data sectors |
| 12/17/1991 | US5073833 Method for compensating for misalignment |
| 12/17/1991 | US5073832 Carriage controlling apparatus for floppy disk apparatus |
| 12/12/1991 | WO1991019288A1 Two and one half inch diameter multiple disk drive |
| 12/11/1991 | EP0460860A1 Rotatable work tool assembly |
| 12/11/1991 | EP0460775A2 A circuit for providing a pulsed output signal from three binary input signals |
| 12/11/1991 | EP0434688A4 Seeking multitasking disk controller |
| 12/10/1991 | US5072435 Information recording device which adjusts its recording parameters to the record carrier to be recorded |
| 12/10/1991 | US5072318 Disk file with adaptive cancellation of nonrepeatable disk runout |
| 12/10/1991 | US5072317 Recording and/or reproducing apparatus having a mechanical memory for storing medium loading and unloading information |
| 12/04/1991 | EP0459606A1 Optical disk replay apparatus |
| 12/04/1991 | EP0459265A2 A track address pattern for a magnetic disk apparatus |
| 12/04/1991 | EP0444062A4 Magnetic parking device for disk drive |
| 12/03/1991 | US5070420 Magnetic disk drive |
| 12/03/1991 | CA1292801C Fine positioning for disk drive |
| 11/28/1991 | WO1991018393A1 Tracking circuit |
| 11/28/1991 | DE4116588A1 Test circuit for automatic track following - has interlock circuit responding to test signal generator output in digital audio tape system |
| 11/28/1991 | DE4016553A1 Reducing access time to selected CD track - reading identification data to achieve synchronisation with stored data |
| 11/27/1991 | EP0458565A2 Servo controlled positioning system |
| 11/27/1991 | EP0458445A2 Negative pressure air bearing slider |
| 11/27/1991 | EP0458444A2 Air bearing disk head slider |
| 11/27/1991 | EP0458372A2 Apparatus for reproducing signals from both sides of discs |
| 11/27/1991 | EP0458295A2 Voice coil type actuator |
| 11/27/1991 | EP0458027A1 Servo-system for a disk player |
| 11/27/1991 | EP0145787B1 Apparatus for controlling tracking of recorded disc reproduction device |
| 11/26/1991 | US5068841 Magneto-optical recording/reproducing device |
| 11/21/1991 | EP0456661A1 Actuator assembly for optical disk systems |
| 11/21/1991 | EP0108060B1 Sector servo seek control |
| 11/19/1991 | US5067118 Position detecting device for use by switching plural alternating signals having different phases from each other |
| 11/19/1991 | US5067039 High track density magnetic media with pitted optical servo tracks and method for stamping the tracks on the media |
| 11/13/1991 | EP0456371A2 Method of controlling seek movements by a magnetic head in a hard disk drive |
| 11/13/1991 | EP0456348A2 Method and apparatus for controlling head position in disk storage apparatus |
| 11/12/1991 | US5065382 Disc memory apparatus |
| 11/12/1991 | US5065271 Thin film magnetic head apparatus and method of manufacturing the same |
| 11/12/1991 | US5065263 Track following transducer position control system for a disk storage drive system |
| 11/12/1991 | CA1292067C Optical record carrier and apparatus for reading the record carrier |
| 11/06/1991 | CN1055984A Bifurcated air bearing actuator assembly for disk drive system |
| 11/05/1991 | US5063548 Information processing apparatus |
| 11/05/1991 | US5063545 Access speed detecting means for disc player |
| 11/05/1991 | US5063465 Head supporting mechanism of a recording/reproducing apparatus |
| 11/05/1991 | US5063464 Low profile suspension |
| 11/05/1991 | US5063454 Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus |
| 10/30/1991 | EP0453996A2 Magnetically recording disk system |
| 10/30/1991 | EP0453992A2 Floating magnetic head |
| 10/29/1991 | US5062019 Method and apparatus for accurately positioning a magnetic recording and reproducing head |
| 10/29/1991 | US5062018 Swaged head arm mounting arrangement for disc drives using shape memory alloy |
| 10/29/1991 | US5062017 Hour-glass disk head slider |
| 10/29/1991 | US5062012 Linear access mechanism with driving force reaction cancelling device and magnetic disk apparatus using the same |
| 10/29/1991 | CA1291562C Method and apparatus for seeking target address with error check code |
| 10/23/1991 | EP0453192A2 Method of minimizing head-arm movements in a disk drive |
| 10/23/1991 | EP0453109A2 Magnetic disc drive |
| 10/23/1991 | EP0453078A2 Head actuator assembly |
| 10/23/1991 | EP0452851A1 Information recording/reproducing apparatus |
| 10/22/1991 | US5060210 Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm |
| 10/22/1991 | US5060101 Storage device having a lock system for the access mechanism and method for locking |
| 10/22/1991 | US5060099 Disc drive slider lifter using shape memory metals |
| 10/22/1991 | US5060093 System for controlling displacement of a head in a disc storage unit |
| 10/19/1991 | CA2037707A1 Bifurcated air bearing actuator assembly for a disk drive system |
| 10/16/1991 | EP0451959A2 Harddisk drive head slider lifter |
| 10/16/1991 | EP0451935A1 Method and apparatus for predicting twist-out torque of a swage mount |
| 10/15/1991 | US5058097 Slider controller for disk player including a slider which is driven by a linear motor |
| 10/15/1991 | US5058092 Method for accessing a control track by positioning an optical head at the center of the control track |
| 10/15/1991 | US5057954 Disk drive head lift mechanism |
| 10/15/1991 | US5057945 Signal recording/reproducing apparatus |
| 10/09/1991 | EP0450629A1 Recording and reproducing device and recording medium therefor |