| Patents for G11B 13 - Recording simultaneously or selectively by methods or means covered by different main groups; Record carriers therefor; Reproducing simultaneously or selectively therefrom (1,475) |
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| 04/12/1989 | EP0310795A1 Optical pick-up device and method for an optical pick-up device |
| 04/12/1989 | CN1032408A Magnetooptical recording film |
| 04/05/1989 | EP0309721A1 Optical-recording medium |
| 03/28/1989 | US4816362 Multilayer, light sensitive element |
| 02/21/1989 | CA1250365A1 Process for reading-out information from electrically polarizable data carriers by means of electron beams |
| 01/11/1989 | EP0298137A1 Method for recording data on recording material and such a recording material |
| 11/15/1988 | US4785437 Process for reading-out information from electrically polarizable data carriers by means of electron beams |
| 10/19/1988 | EP0286842A2 Multichannel type head |
| 09/27/1988 | CA1242517A1 Liquid crystal information storage device |
| 09/20/1988 | US4773060 Optical information recording device |
| 09/14/1988 | EP0281598A1 Magnetic data storage media |
| 09/13/1988 | US4771347 Magneto-optical recording system |
| 09/06/1988 | CA1241741A1 Variable impedance contrast in data storage media |
| 07/27/1988 | EP0275747A1 Magnetic write and optical read head for a data carrier |
| 07/06/1988 | EP0273691A2 Liquid crystal optical read/write storage medium and system using same |
| 04/12/1988 | US4737947 Recording medium having optomagnetic recording layer and optical recording layer with guide tracks of specific reflectance |
| 03/24/1988 | WO1988002168A1 Magnetic data storage media |
| 03/08/1988 | US4730289 Magnetic-optical disc memory system and apparatus for switching header and data information |
| 02/23/1988 | US4727533 Optical data storage and retrieval apparatus |
| 12/08/1987 | US4712203 Method and apparatus for thermo magnetic recording/erasing information with preselected magnetic field switching |
| 11/04/1987 | EP0243656A2 Method and apparatus for encoding and direct overwriting of magneto-optic data |
| 10/27/1987 | US4702558 Liquid crystal information storage device |
| 10/20/1987 | US4701880 Optical system for recording/reproducing information by means of a dielectric breakdown effected by photoswitching of a bias-voltage |
| 09/24/1987 | WO1987005737A1 Electrochromic data recording systems |
| 09/16/1987 | CN87101753A Liquid crystal disc memory |
| 09/15/1987 | US4694358 Magneto-optic recording structure and method |
| 09/09/1987 | EP0235748A2 Liquid crystal disc memory |
| 08/19/1987 | EP0233034A2 Optical memory element |
| 08/12/1987 | EP0232134A2 Optical disc and disc drive apparatus for writing/reading data into/from the disc |
| 08/12/1987 | EP0231858A2 Device for reversible optical data storage |
| 08/12/1987 | EP0231857A2 Reversible, optical data storage method |
| 07/01/1987 | EP0227480A2 Magneto-optical recording |
| 06/16/1987 | US4673626 Optical recording card with optical recording layers |
| 03/17/1987 | US4651314 Optical recording and reproducing equipment |
| 02/10/1987 | US4642795 Thermomagnetic recording system |
| 01/06/1987 | US4635076 Two-sided optical recording medium |
| 12/17/1986 | EP0205188A2 An information writing and reading method comprising an optical disc memory with liquid crystal |
| 12/17/1986 | EP0205187A2 Optical disc memory with liquid crystal |
| 11/26/1986 | EP0202689A2 Device for processing optical data |
| 10/21/1986 | US4618537 Recording medium |
| 09/25/1986 | WO1986005621A1 Two-sided optical recording medium |
| 08/20/1986 | CN86100902A Magnetic-optical disc memory system |
| 07/30/1986 | EP0189187A2 Magnetic-optical disc memory system |
| 07/09/1986 | EP0186813A2 Method for information read-out from electrically polarizable record carriers by means of electron beams |
| 06/11/1986 | EP0184189A1 Optical information recording device and method |
| 02/05/1986 | EP0169882A1 Optical data storage and readout apparatus |
| 01/21/1986 | US4566086 Information storage system utilizing electrets |
| 01/15/1986 | EP0167570A1 Magnetic record medium and apparatus and method for tracking the same |
| 12/18/1985 | EP0164745A2 Method of and apparatus for recording/erasing information by utilizing light induced thermo-magnetic effect |
| 12/18/1985 | EP0164577A1 Optical information recording/reproducing system |
| 11/27/1985 | EP0162349A2 A data recording medium |
| 10/23/1985 | EP0158906A2 Optical card |
| 08/01/1985 | WO1985003376A1 Optical data storage and readout apparatus |
| 07/04/1985 | WO1985002933A1 Magnetic record medium and apparatus and method for tracking the same |
| 05/15/1985 | EP0141512A1 A liquid crystal information storage device |
| 05/02/1985 | EP0139021A1 Thermomagnetic optical recording method |
| 01/02/1985 | EP0129730A2 Photo-electro data memory |
| 10/11/1984 | WO1984003991A1 Thermomagnetic optical recording method |
| 02/21/1984 | CA1162645A1 Ocr/variable head slot reader |
| 01/11/1984 | EP0097774A2 Transducing system |
| 11/29/1983 | US4418365 Video disc transducer system |
| 11/09/1983 | EP0093228A2 Video disk editing method and system |
| 11/08/1983 | CA1156709A1 Magneto-fluidic recording apparatus |
| 08/02/1983 | US4396902 OCR/Variable head slot reader |
| 05/10/1983 | US4383276 Video disc player with a freeze frame feature |
| 02/01/1983 | US4371894 Video disc transducer system and method |
| 12/07/1982 | US4363052 Thermomagnetic recording device |
| 11/23/1982 | US4360728 Banking card for automatic teller machines and the like |
| 11/16/1982 | US4359752 Magneto-fluidic recording apparatus |
| 09/02/1982 | WO1982002968A1 Banking card for automatic teller machines and the like |
| 05/06/1981 | EP0028004A1 Magneto-fluidic recording apparatus |
| 03/17/1981 | CA1097807A1 Data transducer |
| 10/31/1978 | US4123788 Magnetic information carrier with optical servo tracks and apparatus for reading and writing the same |
| 11/01/1977 | US4056712 Magnetic transducer |
| 06/14/1977 | US4029944 Data transducer |