| Patents for G11B 9 - Recording or reproducing using a method or means not covered by one of the main groups; Record carriers therefor (3,522) |
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| 02/16/1982 | US4315358 Method for the manufacture of capacitive pickup styli |
| 02/09/1982 | US4315283 High density recording system using side-by-side information and servo tracks |
| 02/09/1982 | US4315277 Non-linear aperture correction circuit having a signal bypass arrangement |
| 01/26/1982 | US4313189 Stylus position sensor for video disc player apparatus |
| 01/19/1982 | US4312013 Non-linear aperture correction circuit |
| 01/12/1982 | US4310913 Stylus tracking aid using two bimorph elements longitudinally aligned |
| 01/05/1982 | US4309722 Video disc player noise reduction circuit |
| 01/05/1982 | US4309456 Atomizing in air, spraying |
| 01/05/1982 | CA1115838A1 Information storage and retrieval system |
| 12/29/1981 | US4308337 Uniform light exposure of positive photoresist for replicating spiral groove in plastic substrate |
| 12/15/1981 | US4306013 Asymmetrical radiation exposure of spin coated photoresist to obtain uniform thickness coating used to replicate spiral grooves in plastic substrate |
| 11/24/1981 | US4302411 Method of producing plate-shaped body |
| 11/10/1981 | US4299736 Conductive molding composition and discs therefrom |
| 10/27/1981 | US4297312 Method for preparing stylus lapping discs |
| 10/20/1981 | US4296371 System for measuring stylus shoe length |
| 10/20/1981 | US4296144 Annealing diamond |
| 10/07/1981 | EP0037073A2 Centering device to make a centre hole in discs |
| 09/08/1981 | US4287689 Method for improving the quality of low frequency output of a video disc pickup stylus |
| 09/01/1981 | US4287587 Signal loss dectector for video disc |
| 08/25/1981 | US4286290 Fast recovery squelch circuit for a video disc player |
| 08/25/1981 | US4286282 Periodically biased video disc player servo system |
| 08/25/1981 | US4285524 Stylus cleaning apparatus for video disc player |
| 08/18/1981 | US4284712 Fabrication of video disc flyleads |
| 08/04/1981 | US4282311 Method for fabricating flyleads for video disc styli |
| 07/28/1981 | US4281407 Surface acoustic wave pickup and recording device |
| 07/21/1981 | US4280023 Stylus position sensing apparatus for video disc player |
| 07/14/1981 | US4278992 PCM Detector for video reproducer apparatus |
| 07/14/1981 | US4278846 Video disc locked groove clearance system |
| 07/08/1981 | EP0031389A1 Device for driving endless tape |
| 06/16/1981 | US4273967 Stylus for reproducing capacitive videodisc |
| 06/09/1981 | US4272786 Video disc playback apparatus with non-linear aperture correction |
| 06/03/1981 | EP0029519A2 Information signal record medium of the capacitance type |
| 05/12/1981 | US4266785 Stylus lifting/lowering actuator with improved electromagnetic motor |
| 05/05/1981 | CA1100633A1 Reproducing transducer capable of tracking control |
| 04/21/1981 | US4262875 Information record stampers |
| 04/14/1981 | US4261799 Electrolytic process for generating erasable pictures on a solid substrate |
| 03/24/1981 | US4258233 Track skipper apparatus for video disc player |
| 03/17/1981 | CA1097806A1 Stylus for reproducing information signals recorded on a recording medium |
| 02/10/1981 | CA1095619A1 Defect detection system |
| 01/22/1981 | WO1981000166A1 Device for driving endless tape |
| 12/23/1980 | US4241120 Video discs and molding compositions therefor |
| 11/25/1980 | US4236173 Apparatus for reading a disc-shaped record carrier having a PAL color television signal |
| 10/30/1980 | WO1980002342A1 Signal recording/reproducing device |
| 10/14/1980 | US4228050 Video discs of carbon black and polyvinyl chloride |
| 08/12/1980 | US4216970 Long chain alkyl-terminated disiloxane or trisiloxane |
| 06/03/1980 | US4206256 Methyl aklyl siloxanes |
| 05/13/1980 | US4203134 FM Signal demodulator with defect detection |
| 04/22/1980 | US4199782 Stylus for reproducing capacitive videodisc |
| 04/22/1980 | CA1076256A1 Stylus arm lifting/lowering apparatus for a video disc player |
| 04/15/1980 | CA1075810A1 Video disc stylus |
| 04/01/1980 | CA1074848A1 Apparatus for electrostatically charging a recording material |
| 03/18/1980 | CA1074007A1 Disc record groove skipper apparatus |
| 02/26/1980 | US4190859 Tracking control apparatus for use in apparatus for reproducing video signals from a rotary recording medium |
| 02/12/1980 | CA1071766A1 Color-picture/multichannel-sound record |
| 01/23/1980 | EP0006891A1 Photovoltaic-ferroelectric data recorder |
| 01/22/1980 | CA1070424A1 Disc record groove skipper |
| 01/22/1980 | CA1070261A1 Process for producing a stamper for videodisc purposes |
| 01/08/1980 | US4183059 Track skipper for a video disc player |
| 01/01/1980 | CA1069212A Pickup arm cartridge apparatus |
| 08/28/1979 | US4165560 Method for manufacturing a diamond stylus for video disc players |
| 08/14/1979 | US4164755 Video disc pickup apparatus |
| 07/24/1979 | CA1059229A1 Visual image recording device |
| 07/17/1979 | CA1058751A1 Video disc playback apparatus and stylus therefor |
| 07/10/1979 | US4160927 Electrical battery |
| 07/03/1979 | US4160268 Signal pickup device with tracking control and jitter compensation for a video disc |
| 05/08/1979 | CA1054244A1 Ferroelectric ceramic devices |
| 05/01/1979 | US4152727 Reproducing transducer capable of tracking control |
| 04/24/1979 | US4151132 Video discs |
| 04/03/1979 | US4148067 Modulated groove records with a thick metal layer and method for making same |
| 03/27/1979 | CA1051354A1 Apparatus for inhibiting a plurality of disc records from being disposed on a turntable and grounding a disc record disposed on the turntable |
| 03/13/1979 | US4144591 Memory transistor |
| 03/08/1979 | WO1979000097A1 Photovoltaic-ferroelectric data recorder |
| 02/20/1979 | CA1049139A1 Pickup arm control for video disc player |
| 02/13/1979 | US4139908 Photovoltaic-ferroelectric data recorder |
| 01/30/1979 | US4137550 Video disc with a dielectric layer formed from acetylene and nitrogen |
| 01/02/1979 | US4133047 System for storing and retrieving information at the molecular level |
| 11/21/1978 | US4126456 Visual image recording device |
| 10/24/1978 | US4122530 Data management method and system for random access electron beam memory |
| 10/17/1978 | US4120742 Capacitance type pickup stylus and method of producing same |
| 10/17/1978 | CA1040583A1 Metallized video disc having a dielectric coating thereon and method of hardening the same |
| 10/10/1978 | US4119812 Signal defect detection and compensation with signal de-emphasis |
| 09/12/1978 | US4113897 Smooth groove formation method employing spin coating of negative replica of inscribed disc |
| 08/08/1978 | US4104832 Method for forming keel-tipped stylus for video disc systems |
| 07/25/1978 | US4103341 Ferroelectric photovoltaic method and apparatus for transferring information |
| 07/18/1978 | US4101975 Optical memory with storage in three dimensions |
| 07/04/1978 | US4098030 Method for forming a narrowed-electrode pickup stylus for video disc systems |
| 05/02/1978 | US4087828 Process for the storage and reproduction of information |
| 04/18/1978 | US4085236 Kneading hydrophobic pigment with dispersion of copolymer of methacrylic acid, alkenyl aromatic, and conjugated diolefin or alkyl acrylate or methacrylate |
| 03/21/1978 | US4080625 Pickup circuitry for a video disc player with printed circuit board |
| 02/28/1978 | US4077052 Video disc capacitive recording means with a conductive bilayer |
| 02/28/1978 | US4077051 Nickel-chromium-iron alloy |
| 02/07/1978 | US4072985 Video disc with a dielectric layer formed from styrene and nitrogen |
| 12/20/1977 | US4064539 Device for measuring quantities of electric charges or similar electric parameters |
| 11/22/1977 | US4059827 Molecular information storage systems |
| 11/01/1977 | US4056457 Method of depositing low stress hafnium thin films |
| 10/04/1977 | US4052738 Stylus for capacitive videodisc |
| 09/06/1977 | US4047238 Apparatus and process for electrostatically charging a recording material |
| 08/09/1977 | US4041477 Ferroelectric-photoconductor optical storage |
| 07/26/1977 | US4038686 Defect detection and compensation |
| 06/28/1977 | US4032901 System for storing and retrieving information at the molecular level |