| Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826) |
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| 09/08/1981 | US4288307 Method of making a magnetic head |
| 09/08/1981 | US4288281 Appliance for adhering a sensing marker on a medium for recording information |
| 09/08/1981 | CA1108755A1 Magnetic recording and reproducing device |
| 09/02/1981 | EP0034938A2 A servo system and method for positioning a read/write transducer relative to a storage medium and a recording medium for use in such a system and method |
| 09/01/1981 | US4287587 Signal loss dectector for video disc |
| 09/01/1981 | US4287544 Magnetic data carrier for perpendicular recording |
| 09/01/1981 | US4287543 Tape head mount |
| 09/01/1981 | US4287540 Stabilized recording |
| 09/01/1981 | US4287538 Magnetic head tracking control system |
| 09/01/1981 | US4287445 High performance disk drive actuator |
| 09/01/1981 | US4287233 Manufacture of acicular cobalt-containing magnetic iron oxide |
| 09/01/1981 | US4287225 By vapor deposition of a layer of an alloy of samarium and cobalt |
| 09/01/1981 | CA1108293A1 Method and means for seeking magnetic tracks |
| 08/26/1981 | EP0034381A1 Tape recording and/or reproducing apparatus with rotating magnetic head |
| 08/26/1981 | EP0034245A2 Transducer carriage assembly |
| 08/25/1981 | US4286318 Control loop |
| 08/25/1981 | US4286299 Magnetic head assembly for recording or reproducing vertically magnetized records |
| 08/25/1981 | US4286298 Preloaded head arm assembly |
| 08/25/1981 | US4286297 Suspension for flying magnetic head |
| 08/25/1981 | US4286296 Transducer positioning system |
| 08/25/1981 | US4286295 Device for erasing visible recorded signals from a recording medium having oriented magnetic components |
| 08/25/1981 | US4286022 Using a polyester- or -etherurethane copolymer chain extended with an aliphatic diol and amine diol as both binder and dispersant; wear resistance; magnetic tapes |
| 08/25/1981 | US4286018 Biaxially oriented poly-p-phenylene sulfide films |
| 08/25/1981 | US4285894 Mn-Zn single crystalline ferrite head and a method of making the same |
| 08/25/1981 | US4285825 Method of producing magnetic coating material for magnetic recording media |
| 08/19/1981 | EP0034055A2 Variable window data recovery apparatus and method |
| 08/19/1981 | EP0033900A2 Magnetic record carrier |
| 08/19/1981 | EP0033793A1 Method of forming a glass spacer in the magnetic gap of a magnetic head |
| 08/18/1981 | US4285019 Contoured magnetic recording head/slider assembly |
| 08/18/1981 | US4285018 Disk file |
| 08/18/1981 | US4285017 Stripe following in a helical scan device |
| 08/18/1981 | US4285016 Disc, tape and hybrid disc-tape memory apparatus and drive assembly |
| 08/18/1981 | US4285015 Method and apparatus for locating a movable servo controlled member during position signal drop-out |
| 08/18/1981 | US4285014 Channel division recording/reproducing apparatus |
| 08/18/1981 | US4284750 Polyetheresterurethane coating for magnetic tapes |
| 08/18/1981 | US4284684 Magnetic recording medium and method of manufacturing the same |
| 08/12/1981 | EP0033680A1 Platform with at least one transducer to reproduce from, or record on, one information carrier |
| 08/11/1981 | US4283744 Video reproducing apparatus with variable delay means |
| 08/11/1981 | US4283737 Video signal reproducing apparatus with circuit avoiding skew distortion when operated at abnormal speed and/or direction |
| 08/11/1981 | US4283476 Improved adhesion by adding carboxylic acid salt of a polyvalent metal |
| 08/05/1981 | EP0033236A2 Apparatus for perpendicular magnetic recording on a moving magnetic medium |
| 08/05/1981 | EP0033041A1 Security magnetic recording support and process for its manufacture |
| 08/04/1981 | US4282553 Method for generating digital actual velocity signals |
| 08/04/1981 | US4282552 Apparatus for reproducing a video signal including an address signal when the video tape moves at various speeds |
| 08/04/1981 | CA1106494A1 Automatic head tracking system utilizing transducer deflecting means and synchronous demodulation of the envelope signal |
| 07/29/1981 | EP0032855A1 Testing-device for a multi-channel digital recorder |
| 07/29/1981 | EP0032834A1 A positionable element driving circuit |
| 07/29/1981 | EP0032740A2 Multichannel magnetic |
| 07/29/1981 | EP0032660A1 Automatic track following system |
| 07/29/1981 | EP0032580A2 Magnetic head support for disc file |
| 07/28/1981 | US4281396 Magnetic strip domain memory system |
| 07/28/1981 | US4281357 Thin film magnetic head and method of making the same |
| 07/28/1981 | US4281295 Noise reducing apparatus |
| 07/28/1981 | US4281104 Linear random copolyester pigment binders |
| 07/28/1981 | US4281043 Polymodal magnetic recording media and compositions useful therein |
| 07/28/1981 | US4280918 Magnetic particle dispersions |
| 07/22/1981 | EP0032324A1 Method of controlling the gain of circuits amplifying the signals produced by a read head associated with a record carrier, and device for carrying it out |
| 07/22/1981 | EP0032231A2 Positioning device for a magnetic disc drive |
| 07/22/1981 | EP0032230A2 Integrated magnetic transducer and method of manufacturing the same |
| 07/22/1981 | EP0032180A2 Amorphous magnetic alloy containing at least Co and Ti |
| 07/21/1981 | US4280158 Magnetoresistive reading head |
| 07/21/1981 | US4280157 Actuator apparatus for magnetic disc recording systems |
| 07/21/1981 | US4280156 Lightly loaded ramp-launched read/write device for a data carrier |
| 07/21/1981 | US4280155 Method of improving air flow in compact disc drive |
| 07/21/1981 | US4280153 Digitally controlled automatic bias circuit for magnetic recording |
| 07/21/1981 | US4280146 Rotary head type magnetic video recording and reproducing apparatus |
| 07/21/1981 | US4280136 Tape cassette and label inspection system therefor |
| 07/21/1981 | US4280133 Video signal processing circuit |
| 07/21/1981 | US4279945 Acicular particles dispersed in a binder |
| 07/21/1981 | US4279633 Method of producing magnetic head |
| 07/21/1981 | US4279623 Grinding, polishing |
| 07/21/1981 | US4279102 Method of manufacturing narrow track ferrite head cores |
| 07/21/1981 | CA1105615A1 Magnetic recording medium |
| 07/21/1981 | CA1105441A1 Cleaning and lubricating compositions |
| 07/15/1981 | EP0032125A2 Magnetic toner and method of developing magnetic images |
| 07/14/1981 | US4279005 Method and system for automatically providing flat frequency response to audio signals recorded on magnetic tapes |
| 07/14/1981 | US4279004 Method for controlling rotary memory device |
| 07/14/1981 | CA1105136A1 Method and means for capturing magnetic tracks |
| 07/09/1981 | WO1981001907A1 Indicator device for cassettes loaded with magnetical information carrier |
| 07/09/1981 | WO1981001904A1 Magnetic recording medium having a lubricated contact layer |
| 07/09/1981 | WO1981001903A1 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 |
| 07/08/1981 | EP0031500A2 Servo system for centering a transducer over a path |
| 07/08/1981 | EP0031461A1 Magnetoresistive read head |
| 07/08/1981 | EP0031432A2 Magnetic head mount assembly |
| 07/08/1981 | EP0031402A1 Read/write and tunnel erase magnetic head assemblies |
| 07/08/1981 | EP0031375A1 Apparatus and an improved method for processing of digital information |
| 07/07/1981 | US4277809 Apparatus for recording magnetic impulses perpendicular to the surface of a recording medium |
| 07/07/1981 | US4277808 Magnetic transducer head |
| 07/07/1981 | US4277807 Recording digital signals |
| 07/07/1981 | US4277806 Magnetic recording using recording media having temperature dependent coercivity |
| 07/07/1981 | US4277796 Slow down color processor for video disc mastering using a special mode VTR |
| 07/07/1981 | US4277540 Coating a substrate with magnetic recording material; then protective film of tantalum, niobium, tungsten, refractory carbides or nitrides |
| 07/07/1981 | CA1104714A1 Automatic head tracking system |
| 07/07/1981 | CA1104434A1 Magnetic recording medium |
| 07/01/1981 | EP0031216A1 A magnetic head for a perpendicular magnetic recording system |
| 07/01/1981 | EP0031060A1 Method and device for testing the trueness of record carriers protectable against falsification |
| 06/30/1981 | US4276604 Automatic attenuation circuit |
| 06/30/1981 | US4276574 Read/write and tunnel erase magnetic head assembly |
| 06/30/1981 | US4276572 Automatic message announcement system |
| 06/30/1981 | US4276324 Method for the contact-free continuous measurement and monitoring of magnetic tracks on moving film strips |