Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
11/1981
11/04/1981EP0039165A2 Polyfunctional aziridine crosslinking agents for aqueous magnetic recording media binder
11/04/1981EP0039090A2 Composite magnetic head structure and process for manufacturing the same
11/03/1981US4298899 Magnetic head assembly with ferrite core
11/03/1981US4298898 Method of and apparatus for reading data from reference zones of a memory
11/03/1981US4298897 Buffered recording
11/03/1981US4298631 Concurrent pressing of layers on both sides of medium
11/03/1981US4298436 Multilayer embedded conductor structure
11/03/1981US4298381 For magnetic tape head
11/03/1981CA1111961A1 Method and apparatus for correcting tracking errors of a transducer which scans parallel record tracks
11/03/1981CA1111960A1 Apparatus for recording and/or reproducing video signals
11/03/1981CA1111959A1 Tracking-error correcting system for use with record medium scanning apparatus
10/1981
10/29/1981WO1981003083A1 Magnetotransistor detector
10/28/1981EP0038730A1 Latex of magnetic polymers and process for their preparation
10/28/1981EP0038574A1 Information transducer load control system
10/28/1981EP0038436A1 Arrangement to reduce the cross-talk between neighbouring magnetic head systems of a write-read head
10/28/1981EP0038424A1 Method of producing a magnetic recording medium comprising a substrate supporting a film of discrete magnetic particles in a plastics binder matrix
10/28/1981EP0038419A1 Multiple layered magnetic thin-film disk with synthetic resin layer and method for its manufacture
10/27/1981US4297737 Sector servo with sync marks
10/27/1981US4297735 Manually operable magnetic card reader and magnetic head assembly therefor
10/27/1981US4297734 Sampled data servo positioning system
10/27/1981US4297733 Method of controlling the position of a write or read head and a device for carrying out the method
10/27/1981US4297731 Playback apparatus for correcting locking errors
10/27/1981US4297730 Magnetic recording and reproducing device
10/27/1981US4297570 Magnetic stripe
10/27/1981US4297396 Using two coating liquids of differing viscosity
10/27/1981US4297395 Inorganic pigment by precipitation and oxidation of cobalt-containing aqueous iron salt solution; coercive force
10/27/1981US4297337 Solid-phase immunoassays using magnetic glass
10/27/1981CA1111553A1 Minor bit reduction on a magnetic head
10/27/1981CA1111230A1 Production of magnetite from ferrous salt solutions
10/21/1981EP0038217A2 Video tape recorder with inter-channel switching circuit for extra modes of reproduction
10/21/1981EP0037967A1 Shielded magnetoresistive sensor to read information tracks from a magnetic record carrier
10/21/1981EP0037966A1 Magnetoresistive sensor
10/20/1981US4296447 Magnetic recording and reproduction
10/20/1981US4296445 Phase sensor
10/20/1981US4296444 Inductive signal transducer supply circuit particularly for video recording use
10/20/1981US4296443 Magnetic head tracking control system
10/20/1981US4296430 Magnetic recording with reduced cross-talk and interchannel time displacement
10/20/1981US4296149 Manufacture of acicular cobalt-containing magnetic iron oxide
10/20/1981US4295879 Manufacture of acicular ferromagnetic iron particles
10/20/1981CA1111135A1 Restore method and apparatus for disk drive
10/20/1981CA1111133A1 Control system for disk drive
10/14/1981EP0037738A1 Automatic track following feature for helical video recorder
10/14/1981EP0037715A1 Head positioning transducer for helical scan video reproducer
10/14/1981EP0037467A1 Magnetisation device for inducing a preferential orientation in magnetic recording media
10/14/1981EP0037426A1 Magnetic transfer recording method
10/13/1981US4295173 Thin film inductive transducer
10/13/1981US4295172 Rotary magnetic head apparatus
10/13/1981US4295168 Method and system to optimize recording conditions in magnetic recording systems
10/07/1981EP0037260A2 Data regenerative system for NRZ mode signals
10/07/1981EP0037230A1 Video signal recording and/or reproducing system
10/07/1981EP0037073A2 Centering device to make a centre hole in discs
10/06/1981USRE30762 Method and apparatus for video signal recording
10/06/1981US4293884 Multiple leg magnetic transducer structure
10/06/1981US4293883 Magnetic head mount assembly
10/06/1981US4293880 Apparatus for recording and reproducing video signals at selectable different tape traveling speeds from a plurality of pairs of video heads
10/06/1981US4293879 Method and apparatus for the variable speed reproduction of a video signal stored on magnetic tape
10/06/1981US4293375 Plasma etching, photolacquer mask
10/06/1981US4292992 Valve for handling solids capable of gas-pressure-tight closure against a gas pressure differential
10/06/1981CA1110359A1 Servo system for track accessing and track following in a disk drive
10/01/1981WO1981002804A1 Multi-track tape drive with reel end of tape sensing and rewind
10/01/1981WO1981002803A1 Multitrack magnetic head
09/1981
09/30/1981EP0036767A1 Magnetic recording method
09/30/1981EP0036717A1 Magnetic recording medium
09/30/1981EP0036649A1 Magnetic recording tape
09/29/1981USRE30756 Method and apparatus for video signal recording
09/29/1981US4292349 Extrusion onto moving web
09/23/1981EP0036187A1 Head readjustment assembly for a video tape recorder
09/23/1981EP0036083A1 Apparatus for controlling and maintaining the heads to track alignment and method and apparatus to compensate steady disturbances in such an apparatus
09/22/1981US4291354 Extended life multichannel magnetic transducer
09/22/1981US4291353 System and method for cleaning a magnetic head transducer
09/22/1981US4291352 Multichannel transducer structure with improved interchannel cross talk rejection
09/22/1981US4291351 Flux extender or guide for magnetic read head having a magnetoresistive flux sensor
09/22/1981US4291350 Spring suspension for magnetic transducer
09/22/1981US4291349 Diverter means for flexible disk pack and associated method
09/22/1981US4291346 Optoelectronic system for determining the position of a magnetic head transducer on a flexible magnetic recording disc
09/22/1981US4291344 Time base correcting system
09/22/1981US4291343 Frequency-ratio apparatus
09/22/1981US4291100 Magnetic powder in a binder and polyoxyethylene sorbitan fatty acid ester
09/22/1981US4290799 Ferromagnetic metal pigment essentially consisting of iron and a process for its production
09/22/1981CA1109558A1 Data storage apparatus
09/22/1981CA1109557A1 Disk file with symmetrical hollow base
09/22/1981CA1109556A1 Damping vibrations in voice coil actuator
09/21/1981EP0031375A4 Apparatus and an improved method for processing of digital information.
09/21/1981EP0029458A4 Isolated multiple core magnetic transducer assembly.
09/17/1981WO1981002646A1 Magnetic recording medium
09/16/1981EP0035943A1 Magnetic head with variable track-width for writing or reading magnetic data
09/16/1981EP0035915A1 Method and device for testing units for processing magnetic disks, modified disk therefor and device for recording that disk
09/16/1981EP0035894A1 Process for producing a magnetic recording medium
09/16/1981EP0035870A1 Method of producing a magnetic recording medium
09/16/1981EP0035633A1 Method of coating magnetic particles
09/16/1981EP0035542A1 Composite magnetic head with multitrack support structure.
09/16/1981EP0035539A1 High capacity data cartridge system.
09/16/1981EP0035505A1 Media wear distribution apparatus.
09/15/1981US4290088 System and method for erasing information from a flexible information storage media
09/15/1981US4290081 Method and apparatus for stop frame reproduction in television picture fields each recorded on tape in a plurality of adjacent tracks
09/15/1981US4289828 Magnetic recording medium and process
09/15/1981CA1109141A1 Sampled data positioning system employing a model of the physical system for time optimal control
09/09/1981EP0035037A1 Microcrystalline thin strip for magnetic material having high magnetic permeability
09/08/1981US4288827 Automatic switching device for cassette tape recorder with low frequency compensating means
09/08/1981US4288824 Deflectable transducer mounting with damper for video signal reproducing apparatus
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