Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
05/1985
05/28/1985US4520413 Integrated magnetostrictive-piezoelectric-metal oxide semiconductor magnetic playback head
05/28/1985US4520410 Scan tracking apparatus for helical scan video tape recorder
05/28/1985US4520409 Thermal and magnetic recording head
05/28/1985US4520079 Magnetic recording medium
05/28/1985US4520076 Magnetic recording medium
05/28/1985US4520070 Magnetic recording medium and process for producing same
05/28/1985US4520069 Vertical orientation of eliptical ferromagnetic particles; high- density magnetic tapes
05/28/1985US4520040 Ferromagnetic films for high density recording and methods of production
05/28/1985CA1187998A1 Pcm signal processor
05/28/1985CA1187984A1 Magnetoresistive transducer assemblies
05/28/1985CA1187983A1 Delay and optimum amplitude equalizers for a readback circuit
05/28/1985CA1187982A1 Pcm signal processing circuit
05/28/1985CA1187937A1 Automatic calibration system for signal amplifier circuits
05/23/1985WO1985002289A1 A magnetic information recording and/or reading head with increased wear-resistant properties and a method for manufacturing the same
05/22/1985EP0142391A2 Read/write head positioner arrangement
05/22/1985EP0142238A1 Apparatus and method for degaussing magnetic storage media
05/21/1985US4519007 Servo-track position detection systems
05/21/1985US4519006 Magnetic head device
05/21/1985US4519005 Magnetic tape reproducing apparatus
05/21/1985US4519003 Video recorder including a plurality of operating elements
05/21/1985US4518970 Method for forming a latent image and apparatus for carrying out the same
05/21/1985US4518925 Signal processing circuits
05/21/1985US4518904 Stepper motor control for data disk system
05/21/1985US4518881 Linear motor
05/21/1985US4518657 Recording medium and recording-reproduction system provided with the recording medium
05/21/1985US4518656 Magnetic recording medium and process for producing the same
05/21/1985US4518634 Method and apparatus for coating magnetic recording media
05/21/1985US4518627 Fluid layer carried on a non-magnetic support; rotating magnetic field
05/21/1985US4518626 Process for preparing magnetic recording medium
05/21/1985CA1187603A1 Apparatus and method for controlling the position of a rotary head
05/15/1985EP0141764A2 New tape endings for recording tapes
05/15/1985EP0141558A1 Process of manufacture for barium ferrite particles for magnetic recording media
05/15/1985EP0141499A1 Disk drive servo techniques
05/15/1985EP0141147A2 Magnetic recording medium
05/15/1985EP0140977A1 Magnetic head and method of manufacture thereof
05/15/1985EP0140957A1 Audio digital recording and playback system.
05/14/1985US4517616 Thin film magnetic recording transducer having embedded pole piece design
05/14/1985US4517615 Rotary head for magnetic tape record and playback
05/14/1985US4517612 Reproducing apparatus with controlled gain output independent of tracking errors
05/14/1985US4517610 Multichannel signal recovery circuit
05/14/1985US4517609 Video signal recording apparatus
05/14/1985US4517552 Method and apparatus for N-to-M encoding
05/14/1985US4517257 High density
05/14/1985US4517041 Method for attaching a workpiece to a workpiece carrier
05/14/1985CA1187174A1 Magnetic disk substrate with a core of synthetic material
05/14/1985CA1187040A1 Method of making edge protected ferrite core
05/08/1985EP0140582A2 Magnetic recording medium having a perfluoropolyether polymer protective coating
05/08/1985EP0140524A1 Multi channel magnetic transducer head and method of manufacturing same
05/08/1985EP0140513A1 Thin film magnetic recording structures
05/08/1985EP0140193A1 Drive mechanism for fixed discs
05/08/1985EP0140012A1 Coil for a voice coil motor
05/08/1985EP0139925A1 Automatic amplitude equalizer
05/08/1985EP0139914A1 Method for information storage using perpendicular magnetization, and magnetic head to carry out the method
05/08/1985EP0139722A1 Center supported actuator carriage assembly
05/07/1985US4516180 Thin film magnetic head
05/07/1985US4516179 Magnetic transducer head utilizing magnetoresistance effect
05/07/1985US4516178 Cylinder crossing detection circuit for disc drive or the like
05/07/1985US4516177 Rotating rigid disk data storage device
05/07/1985US4516176 Magnetic head cleaning diskette
05/07/1985US4516165 Error recovery procedure using selective erasure
05/07/1985US4516162 Method for verifying servo data
05/07/1985US4515857 Magnetic recording medium
05/07/1985US4515856 Dispersed in a resin binder
05/07/1985US4515828 Planarization method
05/07/1985US4514937 Method for the surface treatment of magnetic recording media
05/07/1985CA1186796A1 Device for positioning objects which have a low mass
05/07/1985CA1186503A1 Composition for forming thick magnetic recording medium
05/02/1985EP0139625A1 Magnetic-record carrier
05/02/1985EP0139531A2 Track following servo for higher density disk files
05/02/1985EP0139506A2 Multi-directional field annealing of a thin-film electromagnetic read/write head
05/02/1985EP0139403A2 Method of producing magnetic recording disks
05/02/1985EP0139372A1 Actuator assembly for memory apparatus
05/02/1985EP0139346A2 Diskette transport
05/02/1985EP0139244A1 Magnetic recording medium
05/02/1985EP0139211A2 Suction nozzle
05/02/1985EP0139180A1 Feed device for magnetic head
05/02/1985EP0139086A1 Head access mechanism for magnetic disk memory device
05/02/1985EP0139021A1 Thermomagnetic optical recording method
05/02/1985EP0139018A1 Magnetic transducer head assembly having a single magnetic pole type for perpendicular mode recording
05/02/1985EP0139008A1 Magnetic head
05/02/1985EP0138966A1 Video cassette play counting, storing and reading system
05/02/1985EP0138956A1 Constant bandwidth automatic gain control system
04/1985
04/30/1985US4514777 Device for cleaning the magnetic head of a recorder/reproducer apparatus for use with a magnetic tape cartridge or the like
04/30/1985US4514776 Magnetic head and method of manufacturing the same
04/30/1985US4514775 Streaming cassette tape transport
04/30/1985US4514773 Circuit arrangement for generating an actuating signal for a piezo-electric element of a positioning device
04/30/1985US4514772 Apparatus for reading/writing data on magnetic disc
04/30/1985US4514771 Method and apparatus for improving disk storage capacity
04/30/1985US4514452 Magnetic recording disk
04/30/1985US4514451 Non-squealing
04/30/1985US4514422 Sugarless;glycerin and sugar alcohol components
04/30/1985US4514216 Acicular ferromagnetic alloy particles for magnetic recording and process for producing the same
04/30/1985CA1186409A1 Magnetic-tape cassette apparatus and magnetic-head unit for use in conjunction with such apparatus
04/30/1985CA1186408A1 Digital recording and reproducing apparatus
04/25/1985WO1985001806A1 Track following servo for higher density disk files
04/25/1985WO1985001724A1 Aluminium oxide glass composition and magnetic head incorporating same
04/24/1985EP0138699A2 Magnetic recorder permitting the reading of a time code, irrespective of the travel speed of the magnetic tape
04/24/1985EP0138580A2 Alloy magnetic recording head
04/24/1985EP0138515A2 An apparatus for use in manufacturing a perpendicular magnetic recording member
04/24/1985EP0138469A2 Print head