| Patents for G11B 11 - Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups or by different subgroups of group; Record carriers therefor (14,351) |
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| 06/09/1987 | US4672578 Method of information recording on a semiconductor wafer |
| 06/02/1987 | US4670865 Method of recording information on magneto-optic information storage medium |
| 06/02/1987 | US4670356 Multilayer-recording media containing rare earth and transition metals |
| 06/02/1987 | US4670353 Magnetooptical recording medium |
| 06/02/1987 | US4670323 Magneto-optic recording medium having a metal oxide recording layer |
| 05/27/1987 | EP0223530A2 Method of recording on magnetooptical disc |
| 05/27/1987 | EP0222916A1 External magnetic field reversing apparatus for photomagnetic disks |
| 05/19/1987 | US4667315 Tight beam position controlling apparatus |
| 05/19/1987 | US4666789 Magneto-optic recording medium |
| 05/12/1987 | US4665512 Optical head for erasing |
| 05/12/1987 | US4664977 Opto-magnetic recording medium |
| 04/29/1987 | EP0220023A2 Optical magnetic memory device |
| 04/28/1987 | US4661420 Amorphous silicon, germanium or alloy thereof containing hydrogen, carbon, fluorine, nitrogen or oxygen |
| 04/22/1987 | EP0219124A2 Beam controller for magneto-optical disc memory system |
| 04/21/1987 | US4660190 Optical focus position control in optical disc apparatus |
| 04/21/1987 | US4660187 Light signal reading method and apparatus using interference between two light beams of different frequency and polarization |
| 04/15/1987 | EP0218532A1 Thermo-magnetic recording head and its production process |
| 04/15/1987 | EP0218380A1 Optical recording medium with pre-groove |
| 04/15/1987 | EP0218250A2 Optical head |
| 04/14/1987 | US4658390 Optical focus position control in an optical memory system |
| 04/14/1987 | US4658388 Optical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride |
| 04/14/1987 | US4658148 Inspection method for magnetic head utilizing the Kerr effect |
| 04/14/1987 | US4658146 Extended cavity laser readout apparatus |
| 04/14/1987 | US4657782 Coating a substrate with ferric acid and rare earths salts, thermally decomposing, crystallization |
| 04/08/1987 | EP0217676A2 Cooling system for electronic circuit device |
| 04/08/1987 | EP0217096A2 Eraseable self biasing thermal magneto-optic medium |
| 04/08/1987 | EP0217067A2 Self biasing thermal magneto-optic medium |
| 04/01/1987 | EP0216634A1 Optical memory element |
| 04/01/1987 | EP0216495A2 Error signal detecting device |
| 03/31/1987 | US4654839 Optical head |
| 03/31/1987 | US4654837 Magneto-optic transducer with enhanced signal performance |
| 03/24/1987 | US4653024 Projected beam switching |
| 03/24/1987 | US4652737 Sampled optical focus error detecting system for rotating optical media |
| 03/18/1987 | EP0214529A1 Positioning device for an optical data memory |
| 03/17/1987 | US4651314 Optical recording and reproducing equipment |
| 03/17/1987 | US4650290 Magneto-optical device |
| 03/11/1987 | EP0213623A2 Optical disc recording and reproducing apparatus |
| 03/11/1987 | CN86202246U Magnetic pen and writing magnetic flat |
| 03/10/1987 | US4649519 Self biasing thermal magneto-optic medium |
| 03/10/1987 | US4649451 Magneto-optical recording medium having alternately-layered high and low refractive index layers |
| 03/10/1987 | CA1219073A1 Optical focus position control in an optical memory system |
| 02/24/1987 | US4646103 Optical recording method |
| 02/24/1987 | US4645722 Photo-thermo-magnetic recording medium and method of preparing same |
| 02/17/1987 | CA1218149A1 Thermo-magnetic recording of binary digital information |
| 02/12/1987 | WO1987000956A1 Process and device for recording an information signal |
| 02/10/1987 | US4642795 Thermomagnetic recording system |
| 02/10/1987 | US4642703 Information recording-reproducing method and apparatus |
| 02/10/1987 | CA1217859A Amorphous magneto optical recording medium |
| 02/04/1987 | EP0210855A2 Magneto-optical recording media |
| 02/04/1987 | EP0210808A2 Recording disks and process |
| 02/04/1987 | EP0210405A2 High-density information recording carrier |
| 02/04/1987 | EP0210275A1 Recording/reproducing apparatus using magneto-optical disk |
| 02/03/1987 | US4640755 Method for producing magnetic medium |
| 01/27/1987 | US4639907 Magneto-optical apparatus |
| 01/27/1987 | US4639816 Magneto-optical recording medium |
| 01/22/1987 | DE3620331A1 Optical recording/reproducing device |
| 01/20/1987 | US4638470 Apparatus using beam splitter cube with specific characteristics for reading information recorded in a magneto-optic medium |
| 01/20/1987 | US4638376 Rotary recording medium which is playable in still picture, slow-motion and normal reproduction modes |
| 01/20/1987 | US4637953 Magnetooptical recording medium with laminated anti-reflection film |
| 01/20/1987 | CA1216941A1 Thermo-magnetic recording materials supporting small stable domains |
| 01/20/1987 | CA1216940A1 Writing, erasing and readout system for magneto-optic recording medium |
| 01/20/1987 | CA1216939A1 Magneto-optical element on the basis of pt-mn-sb |
| 01/14/1987 | EP0208549A2 A magneto-optical medium |
| 01/14/1987 | EP0208212A1 Optical memory with sampled tracking for a pregrooved record carrier |
| 01/06/1987 | US4635243 Optical information processing apparatus |
| 01/06/1987 | US4635076 Two-sided optical recording medium |
| 01/06/1987 | CA1216358A1 Optical storage and switching devices using organic charge transfer salts |
| 12/30/1986 | US4633450 Optical focusing apparatus for the reading of a data medium moving past it |
| 12/30/1986 | US4633338 Magneto-optical recording and reproducing apparatus having a magnetization direction detecting apparatus for a magnetic recording medium |
| 12/30/1986 | EP0206824A2 Apparatus for thermally recording data |
| 12/30/1986 | EP0205940A1 Optical system for guiding the read-out beam in a magneto-optical memory |
| 12/23/1986 | US4631617 Improved signal/noise ration; durability |
| 12/16/1986 | US4630249 Method of recording information in a magneto-optical record carrier, apparatus for carrying out the method, and magneto-optical record carrier for use in an apparatus for carrying out the method |
| 12/10/1986 | EP0204584A2 Apparatus and methods for electron spin polarization detection |
| 12/09/1986 | US4628485 Magneto-optical recording medium |
| 12/02/1986 | US4626679 Optical head and method of detecting the focus thereof |
| 11/26/1986 | EP0202689A2 Device for processing optical data |
| 11/20/1986 | EP0201885A2 Disc cartridge |
| 11/12/1986 | CN85102152A System for playing back a programe recorded on a disc-shaped record carrier |
| 11/06/1986 | WO1986006534A1 External magnetic field reversing apparatus for photomagnetic disks |
| 11/05/1986 | EP0199820A1 Disc device |
| 11/04/1986 | US4620872 Composite target material and process for producing the same |
| 11/04/1986 | CA1213670A1 Multi-layer amorphous optical recording medium |
| 10/29/1986 | CN85103886A Method and apparatus for sensing picture |
| 10/21/1986 | US4618901 High density magnetic head |
| 10/21/1986 | US4618537 Recording medium |
| 10/21/1986 | CA1213038A1 Thermo-magneto-optical recording device and recording element therefor |
| 10/14/1986 | US4617601 Magneto-optical recording medium having recording guide tracks |
| 10/08/1986 | EP0196590A2 Signal recording and reproducing apparatus for an opto-magnetic disk |
| 10/08/1986 | EP0196332A1 Method of manufacturing photothermomagnetic recording film |
| 10/07/1986 | US4615944 Magnetic anisotropy perpendicular to film burface |
| 09/25/1986 | WO1986005621A1 Two-sided optical recording medium |
| 09/24/1986 | EP0195628A2 Magnetic head |
| 09/24/1986 | EP0195606A2 Optical head in an optical memory device |
| 09/24/1986 | EP0195227A2 Magneto-optical disc memory |
| 09/23/1986 | US4613519 Generating defects in chargecollection device |
| 09/16/1986 | US4612587 Thermomagnetic recording and reproducing system |
| 09/16/1986 | US4612068 Alloy of heavy rare earth element, samarium, and iron |
| 09/09/1986 | US4610912 Amorphous alloy thin-film recording layer |
| 09/09/1986 | US4610903 Flexible substrate and amorphous rare-earth transistion metal alloy recording thin film |