Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
04/1986
04/15/1986US4583135 Tracking device using multiple piezoelectric elements for track centering
04/15/1986US4583134 Coded control signal to control tape recorder
04/15/1986US4583132 Recording/reproducing apparatus for selectively processing monaural, stereo and bilingual signals
04/15/1986US4583130 AST for a two track VTR
04/15/1986US4582812 Aluminum oxide substrate material for magnetic head and method for producing the same
04/15/1986US4582759 Magnetic recording medium and process for producing same
04/15/1986US4582757 Audio, video, computor applications; smooth, stable tape running for extended period
04/15/1986US4582754 Magnetic recording medium
04/15/1986US4582746 Magnetic recording medium
04/15/1986US4582623 Barium ferrite magnetic powder and recording medium employing the same
04/10/1986WO1986002190A1 Track post-control system for a magnetic tape unit with transverse track recording
04/10/1986WO1986002189A1 Compound magnetic head
04/10/1986CN85108275A Method and apparatus for recording pcm signal
04/10/1986CN85108011A Magnetic head and process for producing same
04/09/1986EP0177263A2 Automatic tracking apparatus
04/09/1986EP0177235A1 Apparatus for recording audio and video signals
04/09/1986EP0177231A2 Digital video recording
04/09/1986EP0177073A2 Disk carrier and plug
04/09/1986EP0176983A2 Silane dispersing agent for magnetic media
04/09/1986EP0176922A2 Perpendicular magnetization film and the preparation thereof
04/09/1986EP0176919A2 Process for the preparation of fine isotropical ferrite powder having a spinel structure
04/09/1986EP0176636A1 Polymeric thin film and products containing the same
04/08/1986US4581664 Disk accessing circuitry
04/08/1986US4581663 Buried servo recording system having dual transducers
04/08/1986US4581662 Position control apparatus for controlling positions of rotary heads with respect to a recording medium
04/08/1986US4581661 Erasing apparatus employing multiple magnetically premeable members
04/08/1986US4581567 Device for feeding magnetic head
04/08/1986US4581296 Magnetic recording media
04/08/1986US4581283 Mixture of ferromagnetic powder, wax, and thermoplastic elastomer
04/08/1986US4581270 Protective coating is photopolymerizable coating of acrylated resin, aromatic ketone, and silicone lubricant
04/08/1986US4581251 Heat treatment of ferric oxide prior to treatment with cobalt
04/08/1986US4581246 Production of magnetic recording media
04/08/1986US4581245 Method of manufacturing of abrasion resisting magnetic recording product
04/08/1986US4581109 Magnetic plated media and process thereof
04/08/1986US4581080 Magnetic head alloy material and method of producing the same
04/08/1986US4580966 Orientation processing device for magnetic particles on disc-shaped magnetic recording medium
04/02/1986EP0176368A2 Diskette having wear-resistant magnetizable layer
04/02/1986EP0176257A2 Magnetic recording apparatus for intermittently recording a video signal
04/02/1986EP0176131A1 Magnetic head
04/02/1986EP0176017A2 The use of nucleating agents for improving dimensional stability, abrasion resistance and stretchability of polyester films
04/02/1986EP0175839A1 Data transducer restraint
04/02/1986EP0175800A1 Magnetic transducer head
04/01/1986US4580185 Video player/recorder cleaning apparatus and method
04/01/1986US4580180 Method of and apparatus for scanning tape with scanning head
04/01/1986US4580178 Magnetic data storage system
04/01/1986US4580177 Switching circuit for AC bias signal
04/01/1986US4580176 Adaptive equalization circuit for magnetic recording channels utilizing signal timing
04/01/1986US4580175 Endless, folded magnetoresistive head
04/01/1986US4579780 Coating layer containing viscous dimethyl polysiloxane silicone oil
04/01/1986US4579778 Magnetic recording medium
04/01/1986CA1202716A1 Magnetic reproduction system
03/1986
03/26/1986EP0175614A2 Magnetic recording medium and manufacturing method thereof
03/26/1986EP0175535A1 Magnetic composite
03/26/1986EP0175389A2 Magnetic recording medium
03/26/1986EP0175339A2 Magnetic recording medium
03/26/1986EP0175050A2 Magnetic head and process for making it
03/26/1986EP0175001A1 Vertically magnetized magnetic head
03/25/1986US4578729 Magnetic recording medium
03/25/1986US4578728 Thin amorphous alloy film, ceramic
03/25/1986US4578726 Head arm mounting device for one or more scanning heads in recording playback apparatus for disk records
03/25/1986US4578723 Head positioning system with automatic gain control
03/25/1986US4578722 Method for checking disk identity in a flexible disk recorder
03/25/1986US4578719 Tracking error recognition in reproduced digital signals
03/25/1986US4578717 Magnetic record card transducing apparatus and method
03/25/1986US4578314 Abrasive particles in dispersion
03/25/1986US4578313 Particles coated with carbon produced by thermal decomposition
03/25/1986US4578311 Magnetic recording medium
03/25/1986US4578299 Magnetic recording media
03/25/1986US4578280 Process for the production of a magnetic recording material with perpendicular orientation
03/25/1986US4577521 Carriage drive unit
03/25/1986US4577362 Apparatus for removing foreign matter from flexible support
03/19/1986EP0174714A1 Magnetic transducer head structure and method of use
03/19/1986EP0174376A1 Heat-resistant film or sheet
03/18/1986US4577289 Hardware key-on-disk system for copy-protecting magnetic storage media
03/18/1986US4577250 Hall effect magnetic head
03/18/1986US4577244 Techniques for disk servo
03/18/1986US4577240 Multiple zone multiple disk video recording system
03/18/1986US4577239 Video tape recorder usable with different types of tape cassettes
03/18/1986US4577077 Surface smoothing method for disk-like recording medium
03/18/1986US4576876 Magnetic recording medium
03/18/1986US4576866 Vinyl acetate-vinyl chloride copolymer
03/18/1986US4576726 Magnetic coating composition
03/18/1986US4576700 Perpendicular magnetic recording medium method for producing the same, and sputtering device
03/18/1986US4576699 Cosputtering rare earth and transition metals, concentration, variations
03/18/1986US4576635 Treating acicular metal oxyhydroxide with silicon compound, dehydrating, and reducing
03/18/1986EP0119200A4 Video recording and reproducing apparatus for controlling the transport of the tape.
03/12/1986EP0174144A2 Process for preparing magnetic layer and magnetic head prepared using the same
03/12/1986EP0174095A2 Tracking control apparatus
03/12/1986EP0174024A2 Magnetic recording medium and method of producing the same
03/12/1986EP0173977A2 Magnetostrictive recording head
03/12/1986EP0173965A2 Power control device for disk apparatus
03/12/1986EP0173942A2 Magnetoresistance effect type magnetic head apparatus
03/12/1986EP0173910A2 Isometric iron oxides with superior coercivity, process for their production and their use
03/12/1986EP0173844A2 A head alignment servo-system for a multiple magnetic recording disk file and its method of use
03/12/1986EP0173840A2 Apparatus for disorienting magnet particles in magnetic recording media
03/11/1986US4575777 Magnetic recording and reproducing head
03/11/1986US4575776 Magnetic recording disk file servo control system including an actuator model for generating a simulated head position error signal
03/11/1986US4575775 Magnetic recording disk having a sector servo pattern for use with a multiple element head
03/11/1986US4575773 Method and apparatus for selectively recording instrument quality data or composite instrument quality data and video signals on a commercial unmodified video tape recorder
03/11/1986US4575475 Magnetic recording medium