| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
|---|
| 09/29/1987 | US4697257 Jitter compensation system in a rotary recording medium reproducing apparatus |
| 09/29/1987 | US4697256 Optical disc player with improved initial positioning operation |
| 09/29/1987 | US4697213 Index servo type magnetic head positioning control apparatus and method thereof |
| 09/29/1987 | US4697127 Adaptive control technique for a dynamic system |
| 09/29/1987 | CA1227569A1 Cleaning diskette for flexible disk drive transducers |
| 09/23/1987 | EP0237752A1 An air bearing slider |
| 09/22/1987 | US4695991 Reading information stored in multiple frame format |
| 09/22/1987 | US4695989 Optical disc apparatus with selective track accessing using a correction scale value |
| 09/22/1987 | US4695904 Information signal recording disc recorded with an end signal for selectively preventing unwanted access to predetermined recorded information and disc reproducing apparatus therefor |
| 09/22/1987 | CA1227279A1 Disc drive linear actuator |
| 09/16/1987 | EP0237224A2 An information signal recording and/or playback system and method using a prerecorded reference track |
| 09/16/1987 | EP0066590B1 Reading information stored in multiple frame format |
| 09/15/1987 | US4694366 Device for shifting carriage |
| 09/15/1987 | CA1226938A1 Positioning misaligned disk heads |
| 09/09/1987 | EP0236195A1 Method for displacing a mobile system in relation to a data carrier, and device for carrying out the same |
| 09/09/1987 | EP0236077A2 Apparatus for reading and/or recording data on a rotating disc |
| 09/09/1987 | EP0236028A2 Method and apparatus for controlling transducer |
| 09/09/1987 | EP0235799A2 Disk drive arrangement |
| 09/09/1987 | EP0235696A2 Optical proximity imaging method and apparatus |
| 09/09/1987 | EP0235643A1 Limit stop control for a disc memory drive |
| 09/09/1987 | EP0235600A2 Magnetic head positioning apparatus and method |
| 09/09/1987 | CN87100364A Linkage-mounted device for transducer |
| 09/08/1987 | US4692915 Recording and reproduction apparatus having improved reliability with respect to externally applied vibration or impact |
| 09/08/1987 | US4692829 Magnetically biased aerodynamically released integral safety latch for rigid disk drive |
| 09/08/1987 | US4692822 Magnetic tape scanning unit and method of assembly thereof |
| 09/02/1987 | EP0234442A1 Disc drive |
| 09/01/1987 | US4691258 Temperature compensating mechanism for positioning of a magnetic head of a magnetic disk drive |
| 09/01/1987 | US4691255 Power saving circuit arrangement for data transfer apparatus with a disklike record medium |
| 09/01/1987 | US4691252 Rotary magnetic recording-reproducing apparatus |
| 08/26/1987 | EP0233606A2 Method and disc drive for compensating for information shifts on disc storage media |
| 08/25/1987 | US4689779 Tracking control system for optical record disc information reproducing apparatus |
| 08/25/1987 | US4689778 Optical disc recording/reproducing apparatus with recorded track-section detector |
| 08/25/1987 | US4689704 Pressure device for at least one electromagnetic transducer head |
| 08/25/1987 | US4689703 Positioning device for a magnetic disk memory |
| 08/19/1987 | CN87100589A Line movement impulse system |
| 08/18/1987 | US4688202 Tracking control system for an information reproducing apparatus |
| 08/18/1987 | US4688119 Detection and amplification circuit |
| 08/18/1987 | US4688118 Servo gain compensation in a disc drive |
| 08/13/1987 | WO1987004847A1 Device for detecting defect of disc-like recording media |
| 08/12/1987 | EP0231739A2 Voice coil motor magnet assembly |
| 08/12/1987 | EP0231625A1 Taper-flat slider |
| 08/11/1987 | US4686661 Information processing apparatus used in a magneto-optical information recording-reproducing apparatus and having improved erasing capability |
| 08/11/1987 | US4686595 Apparatus for repositioning a transducer in the absence of electrical current to a drive system |
| 08/11/1987 | US4686590 Apparatus for positioning a magnetic head |
| 08/11/1987 | US4686589 Recording and reproducing apparatus having an automatic tracking control system using multiple pilot signals |
| 08/05/1987 | EP0231103A2 A head positioning system |
| 08/04/1987 | US4684913 Slider lifter |
| 08/04/1987 | US4684864 Driving circuit of stepping motor for floppy disk drive |
| 07/29/1987 | EP0229996A2 System for recording, storing and reading information signals on a record medium |
| 07/28/1987 | US4683506 Disc drive arrangement for a hard disc cartridge with a read/write head retract mechanism |
| 07/28/1987 | US4683504 Apparatus for recording and reading binary information on a magnetic disc |
| 07/22/1987 | EP0229621A2 Magnetic head device for magnetic disc |
| 07/21/1987 | US4682314 Disc playback apparatus |
| 07/21/1987 | US4682312 Disc player with search noise suppression |
| 07/21/1987 | US4682255 Actuator arm bearing preload arrangement for a rotary disc drive |
| 07/21/1987 | US4681451 Optical proximity imaging method and apparatus |
| 07/21/1987 | CA1224564A1 Disk accessing circuitry |
| 07/15/1987 | EP0229013A2 Vibration damping apparatus for pulse motor |
| 07/15/1987 | EP0228848A2 Disc reproducing apparatus |
| 07/08/1987 | EP0227845A1 Method and apparatus for controlling the flying height of the head in a magnetic storage unit |
| 07/08/1987 | CN86108660A Driving device for disk drive |
| 07/07/1987 | US4679185 Pivotal-arm device for a disc scanning unit |
| 07/07/1987 | US4679103 Digital servo control system for a data recording disk file |
| 07/07/1987 | US4679102 Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor |
| 07/01/1987 | EP0227380A1 Information recording medium and process for reproducing information therefrom |
| 07/01/1987 | EP0227361A2 Transducer element assembly |
| 06/30/1987 | US4677602 Device for controlling recording track jump operations with over-run correction |
| 06/30/1987 | US4677507 Digital velocity control for a disk drive servo system |
| 06/30/1987 | US4677506 Tracking apparatus for rotational magnetic recording medium with envelope level correction |
| 06/30/1987 | US4677504 Recording apparatus for video signal |
| 06/30/1987 | US4677358 Stepping motor drive controlling circuit |
| 06/24/1987 | EP0226355A2 Actuator access control system |
| 06/24/1987 | CN86108820A Rotary brake rigging and its making method |
| 06/23/1987 | US4675855 Reproducing rate control apparatus for information recording disc |
| 06/23/1987 | US4675761 Magnetic head positioning apparatus and method |
| 06/23/1987 | US4675760 Information signal recording and/or playback system and method using a prerecorded reference track |
| 06/23/1987 | CA1223347A1 Disc players for reproducing an information signal from a rotating disc |
| 06/18/1987 | WO1987003731A1 Process for searching for a track on a rotating plate-like information support and circuit for performing the process |
| 06/17/1987 | CN86107146A Supporting magnetic head device for magnetic tape recording |
| 06/16/1987 | US4673996 Magnetic head air bearing slider assembly utilizing transverse pressurization contours |
| 06/10/1987 | EP0225259A1 Pre-engraved information carrier and its optical scanning device with sampled access |
| 06/10/1987 | EP0225124A2 Lightweight rigid compact configuration for the voice coil carriage and printed circuit cable in a disc drive |
| 06/10/1987 | EP0224935A2 Amplitude detection circuit |
| 06/10/1987 | EP0224852A2 Construction for installing a stepping motor of a floppy disk drive unit |
| 06/09/1987 | US4672491 Apparatus for positioning objects of low mass, in particular magnetic heads |
| 06/09/1987 | US4672490 Recording and reproducing device for magnetic disc including a head damping device |
| 06/04/1987 | WO1987003412A1 Detection and amplification circuit |
| 06/03/1987 | EP0224379A2 Compensation method to correct thermally induced off-track errors in disc drives |
| 06/03/1987 | EP0224378A2 Means for parking read/write heads in a disc drive using the back-emf of the spindle motor to operate a stepper motor |
| 06/03/1987 | EP0224377A2 Speed detecting device |
| 06/03/1987 | EP0223804A1 Process for track jumping in track search processes and circuit arrangement for implementation of the process. |
| 06/02/1987 | US4670804 Expandable suspension for a read/write head in a disk file |
| 06/02/1987 | US4669328 Feed mechanism |
| 05/27/1987 | EP0223611A2 Method for mapping around defective sectors in a disc drive |
| 05/27/1987 | EP0223610A2 Thermal isolation of the voice coil motor from base plate and carriage guide rails of a disc drive |
| 05/27/1987 | EP0222939A1 Disk file with in-hub motor |
| 05/27/1987 | CN86105946A Expandable suspension for supporting a slider and moving it to the disk in a data recording disk file |
| 05/26/1987 | US4669013 Multiple coils for reduction of stray magnetic fields in disk file actuators |
| 05/26/1987 | US4669010 Floppy disk drive |
| 05/26/1987 | US4669003 Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive |