| 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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| 05/18/1994 | CN1024603C Information recording system and recording device and record carrier |
| 05/17/1994 | US5313451 Information recording/reproducing apparatus with STM cantilever probe having a strain gauge |
| 05/17/1994 | US5313445 Reproducing apparatus with suspension supporting a floating-type head with a bevelled slider |
| 05/17/1994 | US5313444 External magnetic field generation apparatus capable of light intensity modulation and magnetic field modulation |
| 05/17/1994 | US5313357 Magnetic storage device and manufacturing method thereof |
| 05/17/1994 | CA2017300C Magneto-optical recording medium |
| 05/17/1994 | CA1329507C Etched glass and process of manufacturing same |
| 05/11/1994 | EP0596716A2 Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
| 05/11/1994 | EP0596339A1 Optical recording medium |
| 05/11/1994 | EP0596139A1 Optical disk recorder/reproducer |
| 05/11/1994 | EP0596136A1 Read-only optomagnetic disk, and reproducing method and equipment |
| 05/10/1994 | US5311500 Alkyl fluoride-acrylic copolymer moisture barrier |
| 05/10/1994 | US5311496 Achromatic expansion prism for magneto-optical drive |
| 05/10/1994 | US5311493 Data reproduction circuit for converting a read analog signal |
| 05/10/1994 | US5311491 Method of data recording for optical disc having burst modulated track |
| 05/04/1994 | EP0595785A1 Electro-magnetic actuator and optical disk |
| 05/04/1994 | EP0595639A2 Magnetooptical recording medium and method of recording data thereon |
| 05/04/1994 | EP0595636A2 Magneto-optical recording medium |
| 05/04/1994 | EP0595626A2 Recording condition determination method and apparatus upon execution of over-write operation on magnetooptical disk by heat shut off method and pulse train method, and magnetooptical recording method and apparatus |
| 05/04/1994 | EP0595625A2 Prepulse condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
| 05/04/1994 | EP0595547A2 Magneto-optical recording medium, and data recording and reproducing method using it |
| 05/03/1994 | US5309427 Overwrite-capable magnetooptical recording medium allowing enlarged margin of high level beam intensity |
| 05/03/1994 | US5309425 Signal processing circuit for optical disk apparatus |
| 05/03/1994 | US5309423 Magneto-optical reproducing device with optical system having two reflective elements and providing phase difference cancellation |
| 05/03/1994 | US5309421 Recording and/or reproducing apparatus for optical disk |
| 05/03/1994 | US5309416 Method and apparatus for initializing intermediate region between tracks on magnetooptical recording medium |
| 05/03/1994 | US5309415 Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams |
| 05/03/1994 | US5308961 Optical-card reader |
| 04/28/1994 | DE4235674A1 Chamber for transporting components under vacuum - with a second transport mechanism with elements movable axially and radially relative to the rotary first transport mechanism. |
| 04/27/1994 | EP0594516A2 High stability silver based alloy reflectors for use in a writable compact disk |
| 04/27/1994 | EP0594471A2 Magnetic read-out device |
| 04/27/1994 | EP0594425A2 Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
| 04/27/1994 | EP0594423A2 Magnetooptical information recording and reproducing apparatus |
| 04/27/1994 | EP0594406A2 Heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
| 04/27/1994 | EP0594194A2 A recording and reproducing medium and a recording and reproducing apparatus |
| 04/27/1994 | EP0594193A2 An information recording and reproducing device and a method using the same |
| 04/27/1994 | EP0594132A2 Recording apparatus for an optical recording medium |
| 04/27/1994 | EP0593875A2 Information recording medium and methods of manufacturing and using the same |
| 04/26/1994 | US5307335 Optical information reading apparatus with multi film elements to compensate for wavelength fluctuation |
| 04/26/1994 | US5307329 Magneto-optical recording head comprising a step-down transformer |
| 04/26/1994 | US5307328 Magneto-optical scanning device with small coil |
| 04/21/1994 | DE4335799A1 Optical diskette recording method - recording and reproducing information using laser beam with wavelength up to 500 nanometres on magneto-optical recording medium |
| 04/20/1994 | EP0593370A1 Apparatus and method for laser noise cancellation in an optical storage system using a front facet monitor signal |
| 04/20/1994 | EP0593249A2 Magnetooptic information recording method |
| 04/20/1994 | EP0593232A2 Method and apparatus for optically recording and/or reproducing information |
| 04/20/1994 | EP0593059A1 Magnetooptical disc recording apparatus |
| 04/20/1994 | EP0592662A1 Electrostatic data recording medium and electrostatic data recording/reproducing method |
| 04/20/1994 | EP0380708B1 Overwrite type magnetooptical recording apparatus |
| 04/20/1994 | EP0275323B1 Ferromagnetic recording apparatus |
| 04/20/1994 | CN1085680A Record replaying apparatus |
| 04/19/1994 | US5305300 Nitriding to form aluminum nitride film; sputtering platinum and cobalt targets to form platinum and cobalt layer; disk used to record informations |
| 04/19/1994 | US5305297 Method for determining optimum irradiation conditions in optical data recording |
| 04/19/1994 | US5305294 Magneto-optical recording/reproducing system having an electromagnetic actuator |
| 04/19/1994 | US5305254 Magneto-optic memory device |
| 04/19/1994 | US5304795 High resolution observation apparatus with photon scanning microscope |
| 04/19/1994 | CA1328689C Magneto-optical recording apparatus with constant leakage magnetic field and pulse modulated magnetic field |
| 04/13/1994 | EP0592219A1 Magnetic head for magneto-optical recording, and magneto-optical recording apparatus |
| 04/13/1994 | EP0592199A2 Magneto-optical recording medium and method of recording and reproducing using same |
| 04/13/1994 | EP0592192A2 Magneto-optical recording and reproduction |
| 04/13/1994 | EP0592174A2 Process for producing optical recording medium, sputtering method and sputtering target |
| 04/13/1994 | EP0592075A1 A polarization detector |
| 04/13/1994 | EP0591636A2 Partial ROM magneto-optical disk medium and computer system |
| 04/13/1994 | EP0591479A1 Method and device for optically reading a sound recording on a grooved recording medium |
| 04/13/1994 | CN1024182C Etched glass and process of mfg. same |
| 04/12/1994 | US5303224 Optical pickup, optical information recording carrier and recording and reproducing apparatus thereof |
| 04/12/1994 | US5303212 Low voltage, high current magnetic transducer drive system for digital recording |
| 04/12/1994 | US5303100 Magnetic disk device with floating-type magnetic head |
| 04/06/1994 | EP0590791A1 Magnetooptical recording magnetic head and magnetooptical recording apparatus |
| 04/06/1994 | EP0590230A2 Magnetooptical recording medium |
| 04/05/1994 | US5301145 Method and apparatus for recording and reading information, and an information recording element |
| 04/05/1994 | US5300558 Curable resin coating composition |
| 03/31/1994 | DE4333018A1 Optical recording disc for super-resolution reproduction - with address pit recorded radially across groups of concentric recording tracks |
| 03/31/1994 | DE4333003A1 Erasable optical recording method - directing laser light spot onto recording film with intensity controlled by relative movement of recording medium |
| 03/31/1994 | DE4332417A1 Optical data reader using laser scanning beam - mixes reflected light beam with reference beam having relative phase or frequency shift |
| 03/30/1994 | EP0589670A1 Optical information recording/reproducing apparatus |
| 03/30/1994 | EP0589611A2 Recording/reproducing apparatus for disc-shaped recording medium, photodetector and optical head |
| 03/29/1994 | US5299183 Optical data record/reproduction apparatus with tubular coil body |
| 03/29/1994 | US5299080 Floating head slider with improved suspension for use in magnetic/optical disk recording apparatuses |
| 03/29/1994 | CA2016341C Low friction macromolecular materials for coating disk and head surfaces |
| 03/29/1994 | CA1328133C Analog signal switching device for use in an optical memory device |
| 03/23/1994 | EP0588647A1 Magneto-optical recording medium |
| 03/23/1994 | EP0588636A1 Over-write capable magnetooptical recording medium having reading layer |
| 03/23/1994 | EP0294490B1 Optical disc discriminating device |
| 03/22/1994 | US5297131 Eccentricity detection and compensation of a disk by a preformatted encoding pattern |
| 03/22/1994 | US5297128 Optical information recording/reproducing apparatus including means for varying intensity of a preheating light beam |
| 03/22/1994 | US5297125 Optical recording medium and information recording apparatus for recording bursts of low-pass filtered reproduce-only information in a wobbling pre-groove on the optical recording medium |
| 03/22/1994 | US5297122 Dust protection assembly for magneto-optic drive apparatus |
| 03/22/1994 | US5297113 Jump operation in two-head-type video disc player |
| 03/22/1994 | US5296989 High density dual gap magnetic head using polar Kerr effect |
| 03/22/1994 | US5296694 Optical pick-up head apparatus with optical means having polarization anisotropy |
| 03/17/1994 | WO1994006039A1 Polarizing filter and method for the manufacture thereof |
| 03/17/1994 | DE4230983A1 Analogue memory for storage of neural network weightings - has magneto=optical material accessed using focussed beam of controlled pulse period or intensity to provide proportional change |
| 03/16/1994 | EP0587388A2 Disc recording apparatus |
| 03/16/1994 | EP0587373A1 Recording media, recording methods, recording/reproducing apparatus, and recording media cutting apparatus |
| 03/16/1994 | CN1024054C Method of and apparatus for writing and reading a magneto-optical record carrier |
| 03/15/1994 | US5295130 Apparatus and method for signal reproduction |
| 03/15/1994 | US5295129 Light signal detecting circuit |
| 03/15/1994 | US5295122 Flying head of a magneto-optical recording apparatus |
| 03/15/1994 | US5295121 Magneto-optic recording/reproducing method and device and magneto-optic recording medium used for them |
| 03/15/1994 | CA1327849C Optical data card |