| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
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| 08/17/1983 | EP0085970A2 Positioning mechanism for a floppy disk drive read/write head carriage |
| 08/16/1983 | US4399478 Fixture device for magnetic head |
| 08/09/1983 | US4398228 Method of avoiding resonance in servo controlled apparatus |
| 08/09/1983 | US4398167 Limited angle electric rotary actuator |
| 08/03/1983 | EP0084728A1 Technique for monitoring galvo angle |
| 08/03/1983 | EP0084727A1 Galvo position sensor for improved track selection in optical data |
| 08/03/1983 | EP0084709A1 Embedded servo track following system and method for writing servo tracks |
| 08/02/1983 | US4397014 Bidirectional pulse generator for video disc stylus deflector transducer |
| 08/02/1983 | US4397009 Device for locating a desired information track |
| 08/02/1983 | US4396966 Low mass actuator system for magnetic recording disks with half strength end poles |
| 08/02/1983 | US4396965 Flying head with foil support |
| 08/02/1983 | US4396961 Video recorder controller apparatus and method |
| 08/02/1983 | US4396960 Servo track following control for magnetic heads, and method for compensating uniform disturbance variables |
| 08/02/1983 | US4396959 Data transducer position control system for rotating disk data storage equipment |
| 07/27/1983 | EP0084123A1 Cantilevered transducer carriage |
| 07/26/1983 | US4395742 Home apparatus |
| 07/26/1983 | US4395741 Positionable element driving circuit |
| 07/26/1983 | CA1150832A1 Deflectable transducer head assembly |
| 07/19/1983 | CA1150406A1 Disc memory head arm lift mechanism |
| 07/12/1983 | US4393487 Stylus cartridge |
| 07/12/1983 | CA1149938A1 Carriage for a scanning head in recording and/or playback apparatus for disk records |
| 07/12/1983 | CA1149913A1 Digital servo control circuit |
| 07/07/1983 | WO1983002355A1 Technique for monitoring galvo angle |
| 07/07/1983 | WO1983002354A1 Galvo position sensor for improved track selection in optical data disk system |
| 07/06/1983 | EP0083170A1 Positioning servomechanism |
| 07/06/1983 | EP0082959A2 Method of assembling a transducer head assembly for fixed head flexible disk drives using a head positioning adapter |
| 07/05/1983 | US4392219 Method and device for recording and reproducing tracking information |
| 07/05/1983 | US4391035 Method of mounting a magnetic head unit on a movable carrier |
| 07/05/1983 | CA1149510A1 Process for coding binary signals for numbering images or pictures stored on a recording medium and audio visual signal transmission apparatus incorporating such a device |
| 06/29/1983 | EP0082645A1 Improvements in and relating to servo-track position detection systems |
| 06/29/1983 | EP0082390A2 Method for detecting excentricity in a video disc and in a video disc player |
| 06/29/1983 | EP0082337A2 Assembly including a flexible disk and a diskdrive therefor |
| 06/28/1983 | US4390978 Carriage translating mechanism for video disc player |
| 06/28/1983 | US4390911 Signal separation in magnetic recording using buried servo |
| 06/28/1983 | US4390910 Phase-lock oscillator |
| 06/28/1983 | CA1149062A1 Lens assembly for a video recorder-playback machine |
| 06/28/1983 | CA1149059A1 Optical read apparatus for reading a disc-shaped record carrier |
| 06/23/1983 | WO1983002192A1 Video cartridge with preplay stylus and holding fingers |
| 06/21/1983 | US4389688 Magnetic head supporting mechanism |
| 06/07/1983 | US4387409 Magnetic head arm mounting apparatus |
| 06/07/1983 | CA1147854A1 Suspension for air bearing head arm assembly |
| 06/01/1983 | EP0080256A2 Information recording/reproducing apparatus |
| 06/01/1983 | EP0080017A1 Linear positioning apparatus for a read/write head |
| 05/31/1983 | US4386375 Video disc player with multiple signal recovery transducers |
| 05/31/1983 | CA1147464A1 Stylus position sensor for video disc player apparatus |
| 05/31/1983 | CA1147457A1 Track selection method and apparatus |
| 05/31/1983 | CA1147271A1 Signal pickup device in a rotary recording medium reproducing apparatus |
| 05/26/1983 | WO1983001872A1 Combined linear motor and carriage |
| 05/26/1983 | WO1983001862A1 Gimbal assembly for flying magnetic transducer heads |
| 05/26/1983 | WO1983001860A1 Magnetic head loading and retraction apparatus |
| 05/26/1983 | WO1983001859A1 Track identification code recording method |
| 05/26/1983 | WO1983001858A1 Recording of transducer positioning information |
| 05/18/1983 | EP0078911A1 Magnetic head air bearing slider and electromagnetic actuator assembly |
| 05/10/1983 | US4383309 Disc-shaped recording medium reproducing apparatus |
| 05/10/1983 | US4383276 Video disc player with a freeze frame feature |
| 05/10/1983 | US4383209 Control system for transducer positioning motor |
| 05/10/1983 | US4383207 Apparatus and method for displacing movable system with respect to a data carrier |
| 05/04/1983 | EP0078060A1 Method and apparatus for recovering information from a selected track on a record disc |
| 05/03/1983 | US4382293 Signal pickup device in rotary recording medium reproducing apparatus |
| 05/03/1983 | US4382292 Video disc player having stylus position sensing apparatus |
| 04/26/1983 | USRE31223 Track skipper for video disc player |
| 04/26/1983 | US4381526 Velocity control system for a data storage apparatus |
| 04/26/1983 | CA1145463A1 Solid state electro-optical track follower array |
| 04/26/1983 | CA1145461A1 Hard fixed disc drive assembly and read-write head actuator |
| 04/19/1983 | CA1145039A1 Apparatus for reading a disk-shaped record carrier |
| 04/13/1983 | EP0076361A1 Air bearing slider for a transducer |
| 04/12/1983 | US4380034 Track centering servo pulse noise filter |
| 04/06/1983 | EP0075923A2 Apparatus for controlling linear tracking arm in record player |
| 04/05/1983 | US4379256 Apparatus and method for measuring the speed of a movable system with respect to a data carrier |
| 03/31/1983 | WO1983001143A1 Emergency magnetic head retract system |
| 03/29/1983 | US4378519 Transducer system with increased tracking capability |
| 03/29/1983 | CA1143837A1 Stylus position sensing apparatus for video disc player |
| 03/29/1983 | CA1143662A1 Stylus lifting/lowering actuator with improved electromagnetic motor |
| 03/23/1983 | EP0074467A2 Magnetic head arm assembly |
| 03/23/1983 | EP0057178A4 A method for recording track marking information on flexible magnetical information carrier discs and apparatus for fine adjustment of the position of a reading head. |
| 03/22/1983 | US4377827 Servo positioning control system for a data storage apparatus |
| 03/22/1983 | CA1143469A1 Method of recording information and tracking signals and apparatus for carrying out the method |
| 03/22/1983 | CA1143143A1 Production of ferrimagnetic iron oxide |
| 03/16/1983 | EP0074131A1 Swinging-arm device for an optical scanning unit |
| 03/15/1983 | US4376956 Video disc player having timebase correction and constant angular velocity turntable |
| 03/15/1983 | CA1143062A1 Apparatus for correcting for temperature- induced tracking errors in a system for recovering information from a recording disc |
| 03/15/1983 | CA1143061A1 Storage disc system with uniform recording density |
| 03/08/1983 | US4376294 Head loading and retraction apparatus for magnetic disc storage systems |
| 03/08/1983 | CA1142643A1 Random access flexible disk memory |
| 03/01/1983 | US4375611 Protected servomechanism |
| 02/23/1983 | EP0072389A2 Self-loading magnetic head air bearing slider |
| 02/22/1983 | USRE31160 Tracking control apparatus for use in apparatus for reproducing video signals from a rotary recording medium |
| 02/22/1983 | US4375094 Apparatus for advancing a video disc pickup transducer beyond a disc record defect |
| 02/22/1983 | US4375092 Automatic music selecting device |
| 02/22/1983 | US4375070 Magnetic head soft loading and unloading device |
| 02/15/1983 | US4374402 Piezoelectric transducer mounting structure and associated techniques |
| 02/09/1983 | EP0071381A2 Magnetic disc drive unit |
| 02/09/1983 | EP0071377A1 Optical data storage |
| 02/09/1983 | EP0071249A2 Magnetic head slider |
| 02/09/1983 | EP0071083A1 Positioning device for objects with a low mass |
| 02/08/1983 | CA1141027A1 Arm driving device in linear tracking pickup apparatus |
| 02/01/1983 | US4371960 Measurement of disc servo head/data head misalignment |
| 02/01/1983 | US4371959 Position sensor for video disc |
| 02/01/1983 | US4371903 Emergency head retract system for magnetic disc drives |
| 02/01/1983 | US4371902 Disk initialization method |