| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 03/25/1986 | US4578723 Head positioning system with automatic gain control |
| 03/25/1986 | US4577521 Carriage drive unit |
| 03/19/1986 | EP0174872A2 Magnetic head driving mechanism for tape player |
| 03/19/1986 | EP0174789A2 Methods of and apparatus for reproducing signals |
| 03/18/1986 | US4577300 Disc players for reproducing an information signal from a rotating disc |
| 03/18/1986 | US4577244 Techniques for disk servo |
| 03/12/1986 | EP0174095A2 Tracking control apparatus |
| 03/12/1986 | EP0173844A2 A head alignment servo-system for a multiple magnetic recording disk file and its method of use |
| 03/11/1986 | US4575776 Magnetic recording disk file servo control system including an actuator model for generating a simulated head position error signal |
| 03/11/1986 | US4575775 Magnetic recording disk having a sector servo pattern for use with a multiple element head |
| 03/11/1986 | US4575770 Video disc data systems for interactive applications |
| 03/11/1986 | US4575366 Tension mechanism for αbelt drive apparatus |
| 03/04/1986 | US4573368 Carriage driving apparatus |
| 02/26/1986 | EP0172441A1 Tracking control system for a video tape recorder |
| 02/25/1986 | US4573094 Moving magnet disc drive actuator |
| 02/25/1986 | US4573087 Recording apparatus |
| 02/18/1986 | US4571649 Disk drive carriage structure |
| 02/18/1986 | US4571648 Device for loading the main body of a platform containing at least one read/write transducer of a data medium |
| 02/18/1986 | CA1200899A1 Data carrier and apparatus for optically reading digital data inscribed in an arcuate pattern on a data carrier |
| 02/11/1986 | US4570191 Optical sensor for servo position control |
| 02/11/1986 | CA1200604A1 Optical memory system having an improved long seek capability |
| 02/11/1986 | CA1200603A1 Optical memory system having improved track following and seeking capabilities |
| 02/11/1986 | CA1200602A1 Optical memory system having improved track following |
| 02/05/1986 | EP0170418A1 Magnetic recording and/or reproducing apparatus |
| 02/04/1986 | US4568992 Disc drive linear actuator |
| 02/04/1986 | CA1200314A1 Magnetic disc recording and/or reproducing apparatus |
| 01/29/1986 | EP0169406A1 Electrodynamic actuator for pivoting one or more transducer supporting arms for disc memories |
| 01/29/1986 | EP0169297A2 Piezoelectric motor |
| 01/28/1986 | USRE32075 Data transducer position control system for rotating disk data storage equipment |
| 01/22/1986 | EP0168699A2 Electro-optical servo transducer head |
| 01/22/1986 | EP0168668A1 Flexible disk apparatus |
| 01/21/1986 | US4566046 Positioning apparatus for a magnetic head of a magnetic disk drive apparatus |
| 01/15/1986 | EP0167805A2 Capacitive sensing employing thin film inductors |
| 01/15/1986 | EP0167570A1 Magnetic record medium and apparatus and method for tracking the same |
| 01/14/1986 | US4564872 Magnetic head driving unit |
| 01/14/1986 | US4564585 Process for fabricating negative pressure sliders |
| 01/08/1986 | EP0167177A1 Method for recovering information from a selected track on a record disk |
| 01/08/1986 | EP0167148A1 Tracking apparatus for rotary magnetic recording medium |
| 01/08/1986 | EP0166963A2 Flexible disk drive optimized for automated manufacture |
| 01/08/1986 | EP0166819A1 Positioning device for a magnetic-disc memory |
| 01/07/1986 | US4563715 Head position control device |
| 01/07/1986 | US4563714 Method and device for controlling the tracking |
| 01/07/1986 | US4563713 Method and apparatus for positioning and indexing read/write on a multiple track recording medium |
| 01/07/1986 | US4563712 Floppy disk drive apparatus |
| 01/07/1986 | US4563709 Rotary record having a spiral track with a video signal and two audio signals recorded thereon |
| 01/02/1986 | EP0166614A2 Encoated optical recording medium |
| 01/02/1986 | EP0166461A2 Method for writing clock track for use with an embedded servo track following system |
| 12/31/1985 | US4562565 Tracking servo system |
| 12/31/1985 | US4562562 Tracking system for controlling the radial positioning of a transducer on a disc medium |
| 12/31/1985 | US4562494 Disk drive alignment analyzer |
| 12/31/1985 | US4562487 Video disc encoding and decoding system providing intra-infield track error correction |
| 12/31/1985 | CA1198814A1 Carriage assembly |
| 12/24/1985 | US4561028 Apparatus and method for reading and writing data on a magnetic disc |
| 12/24/1985 | US4561026 Reproducing apparatus for reproducing recorded signals from a rotary recording medium |
| 12/19/1985 | WO1985005720A1 Servo pattern |
| 12/19/1985 | WO1985005719A1 Self-timed runout correction pattern |
| 12/19/1985 | WO1985005673A1 Technique for measuring very small spacings |
| 12/18/1985 | EP0164642A2 Recording and reproduction apparatus |
| 12/17/1985 | USRE32051 Tracking system and method for video disc player |
| 12/17/1985 | US4559571 Tape cartridge drive with movable read/write head |
| 12/11/1985 | EP0164071A2 Pickup head position control device in an optical type disc reproducing device |
| 12/10/1985 | US4558383 Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk |
| 12/04/1985 | EP0163329A1 Drum-shaped scanning unit for a recording and/or reproducing apparatus and method for mounting a transformer disc of a two-part ring transformer |
| 12/04/1985 | EP0163171A1 Apparatus for analyzing the interface between a recording disk and a read-write head |
| 12/04/1985 | EP0162919A1 A disc type information storage and rerieval system |
| 12/03/1985 | US4556964 Technique for monitoring galvo angle |
| 12/03/1985 | US4556924 Disk drive head accessing mechanism |
| 12/03/1985 | US4556921 Method and apparatus to improve the positioning accuracy of a tracking arm |
| 12/03/1985 | US4556920 Reproduction device |
| 11/27/1985 | EP0162614A2 Improved rotary actuator for a disc drive |
| 11/27/1985 | EP0162407A1 Method and device for determining error signals in a disc drive and test magnetic disc therefor |
| 11/27/1985 | EP0162349A2 A data recording medium |
| 11/26/1985 | US4555739 Semi self-loading ferrite head |
| 11/26/1985 | US4555738 Head adjusting disk |
| 11/26/1985 | US4555189 Winchester disc drive |
| 11/21/1985 | EP0119201A4 An improved automatic head position tracking servo for a rotary head magnetic tape recording and reproducing apparatus. |
| 11/19/1985 | US4554653 Focusing optical head movable radially by a carriage |
| 11/19/1985 | US4554600 Track following code and track following system |
| 11/13/1985 | EP0161061A1 Herbical band drive for disc storage apparatus |
| 11/13/1985 | EP0160793A1 Optical tool for aligning transducer head assemblies |
| 11/12/1985 | US4553184 Magnetic head slider |
| 11/12/1985 | US4553181 Disk drive positioning system providing fault-free protection against endstop head crashes by use of a passive network in the actuator driving signal path |
| 11/07/1985 | EP0108060A4 Sector servo seek control. |
| 11/06/1985 | EP0160447A2 Disc drive linear actuator |
| 11/06/1985 | EP0160095A1 Tracking servo circuit for optical disk |
| 11/05/1985 | US4551777 Tracking servo system for magnetic recording and reproducing apparatus using flexible magnetic disk |
| 11/05/1985 | US4551776 Automatic reference adjustment for position error signal on disk file servo system |
| 11/05/1985 | US4551770 Video disc encoding and decoding system providing intra-field track error correction |
| 10/30/1985 | EP0159841A2 Method and apparatus for positioning transducers by digital conversion of analog signals |
| 10/29/1985 | US4550393 System for reproducing an address signal from each track turn during a search mode operation of a reproducing apparatus |
| 10/29/1985 | US4550352 Head adjusting device |
| 10/29/1985 | US4550348 Video disc player skip/arm servo system |
| 10/29/1985 | CA1196101A1 Optical disc player |
| 10/29/1985 | CA1196099A1 Device for rapidly moving an optical pick-up device in an optical reproducing apparatus to a desired position on a record disc |
| 10/22/1985 | US4549238 Removing titanium carbide from surface |
| 10/22/1985 | US4549232 For a disk file |
| 10/22/1985 | US4549228 Video disc encoding and decoding system providing intra-field track error correction |
| 10/16/1985 | EP0158245A2 Skip circuit for recorded information reproducing unit |
| 10/15/1985 | US4547821 Head support and positioning assembly for record/playback device |
| 10/09/1985 | EP0157577A2 Information recording disc and reproducing apparatus therefor |