| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 01/13/1987 | US4636896 Disk recording and playback apparatus having magnetic head separation device |
| 01/13/1987 | US4636894 Recording head slider assembly |
| 01/13/1987 | US4636892 Flexible disk drive optimized for automated manufacture |
| 01/13/1987 | US4636885 Servo system for a magnetic disk memory having spiral tracks |
| 01/13/1987 | US4636884 Head positioning control system in magnetic disk device of index servo system |
| 01/13/1987 | US4636883 Magnetic head control apparatus |
| 01/13/1987 | US4636873 Method and apparatus for recording and reproducing an information signal with a larger tape wrapping angle |
| 01/07/1987 | EP0207692A2 A servo control system for centring a transducer head on a data track on a magnetic record |
| 01/07/1987 | EP0207374A2 Servo circuit for an information recording and/or reproducing apparatus |
| 01/07/1987 | CN85104843A Method and arrangement for detecting error signals in a disk drive, and a magnetic test disk therefor |
| 01/06/1987 | US4635151 Rotary actuator having preloaded spring crash stop |
| 01/06/1987 | US4635145 Floppy disk drive with stand-by mode |
| 12/30/1986 | US4633351 Method and apparatus for hydrodynamic magnetic recording |
| 12/30/1986 | US4633346 Magnetic head positioning device for a flexible disk |
| 12/30/1986 | US4633345 Positioning misaligned disk heads |
| 12/30/1986 | US4633343 Method of and apparatus for writing data on a recording medium and the medium so produced |
| 12/30/1986 | US4633334 Tracking control apparatus using digitized vertical synchronizing signal |
| 12/23/1986 | US4631611 Read/write head positioner arrangement |
| 12/23/1986 | US4631610 Multichannel magnetic head supporting mechanism |
| 12/23/1986 | US4631606 System for detecting the position of a read-write head on a disk recording medium having servo sectors with three or more servo patterns |
| 12/23/1986 | US4631431 Linear motor having improved magnetic characteristics |
| 12/23/1986 | US4630926 Fine clearance measuring apparatus |
| 12/23/1986 | CA1215778A1 Transducer-slider assembly having contoured air- bearing surface |
| 12/18/1986 | WO1986007485A1 Process for track jumping in track search processes and circuit arrangement for implementation of the process |
| 12/16/1986 | US4630252 Control apparatus for optical disc player for locating blank tracks |
| 12/16/1986 | US4630251 Video disc reproducing apparatus |
| 12/16/1986 | US4630250 Method and apparatus for searching an address signal on video and/or audio disc |
| 12/16/1986 | US4630190 Servo control apparatus for a disk drive |
| 12/16/1986 | US4630159 Magnetic disc recording and/or reproducing apparatus |
| 12/16/1986 | US4630158 Vertically loading head module for magnetic disk drive |
| 12/16/1986 | US4630157 Cleaning diskette for flexible disk drive transducers |
| 12/16/1986 | US4630155 Magnetic head shifting means for flexible disk memory system |
| 12/16/1986 | US4630154 Head protection mechanism for disk drive |
| 12/16/1986 | US4630150 Optical tool for aligning transducer head assemblies |
| 12/16/1986 | US4630144 Tracking control apparatus |
| 12/16/1986 | US4630135 Video head position control |
| 12/16/1986 | CA1215465A1 Adaptive misposition correcting method and apparatus for magnetic disk servo system |
| 12/09/1986 | US4628386 Magnetic reading and/or writing head support assembly |
| 12/09/1986 | US4628380 Encoder output phase selection system for magnetic disk memory |
| 12/09/1986 | US4628379 Disk runout compensator |
| 12/03/1986 | EP0203788A2 Information recording and reproducing apparatus |
| 12/02/1986 | US4627043 Head shifting apparatus |
| 12/02/1986 | US4627039 Head positioning servo system for optical recording with coarse and fine control |
| 12/02/1986 | US4626944 Positioning device for scanning means in a disk drive unit |
| 12/02/1986 | US4626930 Rotary recording medium having different video signals recorded on mutually adjacent tracks and reproducing apparatus therefor |
| 11/26/1986 | EP0202480A2 Positioning misaligned disk heads |
| 11/26/1986 | CN86103579A Disk arrangement system |
| 11/25/1986 | US4625249 Head holding mechanism of magnetic disk device |
| 11/25/1986 | US4624564 Calibration standards for flying height testers |
| 11/25/1986 | US4624048 Pure aluminum |
| 11/18/1986 | US4623993 Reducing listeners discomfort resulting from track loss in compact disc players |
| 11/18/1986 | US4623942 Method and arrangement for detecting error signals in a disk-drive, and a magnetic test disk therefor |
| 11/12/1986 | EP0201093A1 Pre-engraved information carrier and optical read device therefor |
| 11/12/1986 | CN85102152A System for playing back a programe recorded on a disc-shaped record carrier |
| 11/12/1986 | CA1213979A Coarse position error signal generation in an optical disk storage system employing course servo tracks |
| 11/12/1986 | CA1213978A Fine and coarse servo system for access and tracking on an optical disk |
| 11/12/1986 | CA1213977A System for sensing the rotational position of a rotating disk having coarse seek tracks |
| 11/11/1986 | USRE32285 Linear actuator for a memory storage apparatus |
| 11/11/1986 | US4622604 Magnetic head controlling apparatus |
| 11/11/1986 | US4622516 Magnetic tachometer for disk drives |
| 10/28/1986 | US4620244 Compensation method to correct thermally induced off-track errors in disc drives |
| 10/28/1986 | US4620243 Disk drive incremental rewrite |
| 10/28/1986 | CA1213368A1 Optical reproducing apparatus |
| 10/23/1986 | WO1986006202A1 Encoder output phase selection system for magnetic disk memory |
| 10/23/1986 | WO1986006201A1 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support |
| 10/23/1986 | WO1986006200A1 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support |
| 10/22/1986 | EP0198619A2 Slider for supporting a transducing head |
| 10/21/1986 | CA1213050A1 Apparatus for recording and/or reading information by means of a radiation beam |
| 10/21/1986 | CA1213048A1 Apparatus for recording and/or reading information on an optically readable disc |
| 10/21/1986 | CA1213046A1 Servo apparatus and flaw detecting apparatus therefor for optical disc player |
| 10/21/1986 | CA1213041A1 Head support and positioning assembly for record/playback device |
| 10/21/1986 | CA1213040A1 Apparatus for reading a record carrier |
| 10/21/1986 | CA1213039A1 Method of recording a digital information signal on a record carrier, record carrier provided with such an information signal, and read/write apparatus for such a record carrier |
| 10/15/1986 | EP0197394A2 Electromagnetic actuator and magnetic disk file employing same |
| 10/14/1986 | CA1212763A1 Optical writing-reading head for an optical disk and an optical device associated with such a head |
| 10/14/1986 | CA1212761A1 Disc players |
| 10/14/1986 | CA1212759A1 Disk drive carriage structure |
| 10/08/1986 | EP0196384A2 Calibration standard for flying height testers and method of manufacturing same |
| 10/08/1986 | CN85101172A Slider assembly for magnetic head |
| 10/07/1986 | US4616353 Tracking servo with closed loop gain correction |
| 10/07/1986 | US4616276 Disk file servo control system with fast reduction of repeatable head position error |
| 09/30/1986 | US4614989 Helical band drive for disc storage apparatus |
| 09/30/1986 | US4614986 Magnetic servo with improved tracking system |
| 09/30/1986 | US4614984 Recording and/or reproducing apparatus with arrangement for positioning resetting the head |
| 09/23/1986 | US4613967 Disc player |
| 09/23/1986 | US4613963 Tracking-servo device |
| 09/23/1986 | US4613962 Tracking device with linear motor |
| 09/23/1986 | US4613916 Information storage disk transducer position control system requiring no servo pattern on the storage disk |
| 09/17/1986 | EP0194803A2 Magnetic head adjusting device |
| 09/16/1986 | US4612588 Head moving apparatus using stepping motor |
| 09/16/1986 | CA1211560A1 Magnetic reading and/or writing device |
| 09/16/1986 | CA1211556A1 Circuit arrangement for generating an actuating signal for a piezo-electric element of a positioning device |
| 09/12/1986 | WO1986005310A1 System to ascertain the scanning speed of audio discs with contactless scanning |
| 09/12/1986 | WO1986005308A1 Circuit arrangement for a playback device for audio or video discs |
| 09/12/1986 | WO1986005307A1 Circuit for an audio and/or video disk playback device |
| 09/10/1986 | EP0193961A2 Information selection device of disc player |
| 09/09/1986 | US4611316 Actuator operating center detecting circuit and optical disk apparatus with the detecting circuit |
| 09/09/1986 | US4611315 Optical disk apparatus and track access method therefor |
| 09/09/1986 | US4611248 Rotary recording medium and reproducing apparatus therefor |
| 09/03/1986 | EP0193129A2 Recording apparatus for video signal |