| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 05/26/1982 | EP0052477A2 Apparatus for recording flexible magnetic disk |
| 05/26/1982 | EP0052454A2 Recording and/or reproducing equipment including a recording member |
| 05/25/1982 | US4332022 Tracking system and method for video disc player |
| 05/25/1982 | US4331991 Head actuator for magnetic disk drive |
| 05/25/1982 | US4331987 Self-compensating device for a magnetic disc apparatus |
| 05/25/1982 | US4331976 High density recording system using side-by-side information and servo tracks |
| 05/25/1982 | CA1124389A1 Transducer positioning system for rotating disk drive units |
| 05/18/1982 | US4330881 Video disc apparatus for clearing foreign matter from the signal pickup stylus during playback |
| 05/18/1982 | US4330880 Apparatus for optically reading a disc-shaped record carrier, in particular for rapidly locating a desired program section |
| 05/18/1982 | US4330879 Adaptive stylus kicker using disc track and disc sector information |
| 05/18/1982 | US4330806 Transducer feeding mechanism in an apparatus for recording and reproducing a signal on and from a rotary recording medium |
| 05/12/1982 | EP0051428A1 Video signal recording and reproducing apparatus |
| 05/11/1982 | US4329721 Tachometer for deriving average velocity output by sampling position signal |
| 05/11/1982 | CA1123513A1 Timing circuit and method for a track following servo in a data storage system |
| 05/05/1982 | EP0050695A1 Improvements in sampled servo position control systems |
| 04/28/1982 | EP0050369A1 Drive assembly for a video recorder playback machine |
| 04/28/1982 | EP0050367A1 Lens assembly for a video recorder-playback machine |
| 04/27/1982 | US4327430 Information signal recording medium of rotary type with overlapped tracks |
| 04/27/1982 | US4327388 Transducer-carriage assembly with spring suspension |
| 04/27/1982 | US4327387 Magnetic head slider assembly comprising at least one transducer for reading and/or recording information contained on a data carrier |
| 04/27/1982 | CA1122706A1 Transducer suspension mount apparatus |
| 04/27/1982 | CA1122704A1 Apparatus for reproducing a video signal |
| 04/21/1982 | EP0049948A2 Control system for transducer positioning motor |
| 04/21/1982 | EP0049946A2 Apparatus for positioning a transducer with respect to a track |
| 04/21/1982 | EP0049943A1 Movable magnetic head block assembly for a double sided flexible disk storage device |
| 04/20/1982 | CA1122319A1 Cross band coupling for stepper motor driven rigid magnetic disc |
| 04/13/1982 | US4325136 Video disc player having carriage drive apparatus |
| 04/13/1982 | US4325080 Apparatus for displaying video track number in viewfinder of video camera |
| 04/13/1982 | US4325016 Device for controlling pickup arm movement in linear tracking pickup arm apparatus |
| 04/06/1982 | US4323998 Video disc locked groove corrector |
| 04/06/1982 | US4323997 Linear-tracking pick-up arm drive assembly |
| 04/06/1982 | US4323939 Hard fixed disc drive assembly and read-write head actuator |
| 04/06/1982 | US4323938 Rolling pivot for magnetic head |
| 04/01/1982 | WO1982001097A1 Head position system for a disc data store |
| 03/30/1982 | US4322840 Arm driving device in linear tracking pickup apparatus |
| 03/30/1982 | US4322836 High density recording system using side-by side information and servo tracks |
| 03/30/1982 | US4322762 Device for positioning objects of low mass |
| 03/30/1982 | US4322748 High-speed reproducing system in apparatus for reproducing information signals recorded on a rotary recording medium |
| 03/23/1982 | US4321702 Carriage reset apparatus for disc record player |
| 03/23/1982 | US4321701 Device for displacing the reading head of a video disc in radial and vertical directions |
| 03/23/1982 | US4321302 Process for producing magnetic powder having high coercive force |
| 03/16/1982 | US4320493 Linear tracking arm assembly with electric brake |
| 03/16/1982 | US4320487 Video disc stylus control apparatus |
| 03/10/1982 | EP0046793A1 Information storage apparatus. |
| 03/09/1982 | US4319293 Head adjusting mechanism |
| 03/02/1982 | US4318144 Flexible magnetic disk recording apparatus |
| 03/02/1982 | US4318142 Automatically compensated movable head servo circuit and method |
| 03/02/1982 | CA1119296A1 Information signal recording medium of the rotary type |
| 02/23/1982 | US4317131 System and method for reproducing pictures and related audio information |
| 02/17/1982 | EP0046000A1 Video disc support assembly |
| 02/09/1982 | US4315293 Transducer protection guide for diskette insertion and removal |
| 02/09/1982 | US4315292 Beveled magnetic heads for floppy disk |
| 02/09/1982 | US4315290 Apparatus for shifting the magnetic read/write head carriage in a floppy disk drive unit |
| 02/04/1982 | WO1982000382A1 Method for reducing the error of the angle of rake on a rotating disc for the transmission of information particularly acoustic signals and equipment for the implementation of such method,particularly pick-up arm |
| 02/03/1982 | EP0044902A1 Supporting device for a magneto-electric transducer in a recording/reading device using magnetic disk memories |
| 02/02/1982 | US4314296 Transducer head mounting structures |
| 02/02/1982 | US4314292 Magnetic recording or reproducing apparatus |
| 02/02/1982 | US4314291 Self-compensating device for a magnetic disc apparatus |
| 02/02/1982 | US4314290 Di-bit recording technique and associated servo indicia |
| 01/26/1982 | US4313189 Stylus position sensor for video disc player apparatus |
| 01/26/1982 | US4313143 Head positioning mechanism for data cartridge recorder |
| 01/26/1982 | US4313141 Position shift apparatus |
| 01/26/1982 | US4313134 Track error correction system as for video disc player |
| 01/26/1982 | US4313062 Bidirectional deflector driver for video disc |
| 01/20/1982 | EP0044151A1 Device for recording and/or reading binary data on both faces of a flexible magnetic disc |
| 01/19/1982 | CA1116726A1 Self-regulating electronic tachometer |
| 01/12/1982 | US4310914 Skipper-assisted active search |
| 01/12/1982 | US4310913 Stylus tracking aid using two bimorph elements longitudinally aligned |
| 01/12/1982 | US4310912 Servo system for recording and/or reproducing apparatus using a rotatable recording carrier |
| 01/12/1982 | US4310865 Cable positioner for a scanning head |
| 01/06/1982 | EP0042931A2 Magnetic disk initialization method |
| 01/05/1982 | US4309732 Transducer supporting assembly for double sided floppy disk |
| 01/05/1982 | CA1115839A1 Random access storage device with a movable recording medium |
| 12/29/1981 | US4308564 Head load/unload mechanism for rotating magnetic memories |
| 12/22/1981 | US4307419 Video disc signal surface imaging apparatus |
| 12/22/1981 | US4307418 Video disc player system for correlating stylus position with information previously detected from disc |
| 12/15/1981 | US4306261 Method and apparatus for recording helical scan information and tracking signals |
| 12/15/1981 | US4306260 Dual magnetic head mount |
| 12/08/1981 | US4305104 Information storage position control apparatus |
| 12/08/1981 | US4305102 Multi-channel head device and its manufacturing method |
| 12/01/1981 | CA1113407A1 Stationary record player |
| 11/24/1981 | US4302789 Disc memory head arm lift mechanism |
| 11/24/1981 | US4302788 Reversible cassette-type recording and/or reproducing apparatus |
| 11/10/1981 | US4300176 Fixed disc head actuator assembly |
| 10/28/1981 | EP0038574A1 Information transducer load control system |
| 10/27/1981 | US4297733 Method of controlling the position of a write or read head and a device for carrying out the method |
| 10/20/1981 | US4296491 Information carrier having inter-track identification code information |
| 10/20/1981 | CA1111136A1 Information carrier with a magnetic storage layer and apparatus for reading and writing the same |
| 10/20/1981 | CA1111135A1 Restore method and apparatus for disk drive |
| 10/20/1981 | CA1111133A1 Control system for disk drive |
| 10/07/1981 | EP0037230A1 Video signal recording and/or reproducing system |
| 10/06/1981 | CA1110359A1 Servo system for track accessing and track following in a disk drive |
| 09/23/1981 | EP0036222A2 Focus servo system and focussing method |
| 09/23/1981 | EP0036083A1 Apparatus for controlling and maintaining the heads to track alignment and method and apparatus to compensate steady disturbances in such an apparatus |
| 09/22/1981 | US4291346 Optoelectronic system for determining the position of a magnetic head transducer on a flexible magnetic recording disc |
| 09/22/1981 | CA1109558A1 Data storage apparatus |
| 09/22/1981 | CA1109557A1 Disk file with symmetrical hollow base |
| 09/21/1981 | EP0029458A4 Isolated multiple core magnetic transducer assembly. |
| 09/16/1981 | EP0035803A2 Disc spindle servo system |
| 09/16/1981 | EP0035505A1 Media wear distribution apparatus. |