| 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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| 05/12/1992 | US5113384 Focus capture method for magneto-optic disk drives |
| 05/12/1992 | US5112701 Thin magmetic film of iron nitrides, a reflective layer on a nonmagnetic support |
| 05/12/1992 | US5112662 Lubricant is a fluoroalkyl alcohol, phosphate or carboxylate |
| 05/12/1992 | CA1300748C Magneto-optic recording and reproducing apparatus including a multiple layer recording medium having a premagnetized bias layer replacing an external bias magnet |
| 05/06/1992 | EP0483363A1 Production method of magnetooptical recording medium and magnetooptical recording medium |
| 05/06/1992 | EP0324853B1 Magneto-optical disk |
| 05/06/1992 | CN1060918A Controlling optical disk drive using mode set command |
| 05/05/1992 | US5111441 Apparatus for generating magnetic field varying in response to an information signal |
| 05/05/1992 | US5111440 An apparatus for controlling the rotation and stabilizing the position of a magnet device |
| 05/05/1992 | CA1300263C Magneto-optic information-carrying medium |
| 04/30/1992 | WO1992007358A1 Magneto-optical recording medium |
| 04/29/1992 | EP0482606A2 Magneto-optical recording medium |
| 04/29/1992 | EP0482585A2 Magneto-optical disc recording and/or reproducing apparatus |
| 04/29/1992 | EP0482026A1 Recording and/or reproducing appratus with a cooling body for an element to be cooled. |
| 04/28/1992 | US5109377 Adding aluminum, chromium and/or titanium to either the transition metal or rare earth meal layer to improve corrosion resistance |
| 04/28/1992 | US5109375 Alternating cobalt magnetic layers and transition metal non-magnetic layers |
| 04/28/1992 | US5109374 Small-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording medium |
| 04/28/1992 | US5108846 Protective layers of germanium ceramics |
| 04/23/1992 | DE4033295A1 Scanning system for magneto=optical data storage disc - converts reflected signal outputs with specific phase shift corresp. to characteristics of disc |
| 04/22/1992 | EP0481786A2 Magneto-optical recording method |
| 04/21/1992 | US5107484 Arrangement of recording/reproducing apparatus |
| 04/21/1992 | US5107473 Optical recording/reproducing device using permissible ranges for the value of an automatic gain control voltage |
| 04/21/1992 | US5107472 Track access and laser beam alignment system for an optical recording and reproduction apparatus |
| 04/21/1992 | US5107471 Magnetic head having a rectangular configuration for use in a magneto-optical recording system |
| 04/21/1992 | US5107460 Spatial optical modulator |
| 04/21/1992 | US5106704 Over write capable magnetooptical recording medium |
| 04/21/1992 | US5106703 Using krypton and xenon as sputter gases |
| 04/21/1992 | CA1299286C Data storage device having a phase change memory medium reversible by direct overwrite |
| 04/16/1992 | WO1992006472A1 Magneto-optical disk drive seek control system |
| 04/15/1992 | EP0480578A1 Magnetic disk device |
| 04/14/1992 | US5105415 Detecting magnetooptic and intensity-modulated optical signals with the same detector |
| 04/14/1992 | US5105410 Multi-beam optical pick-up |
| 04/14/1992 | US5105408 Optical head with flying lens |
| 04/14/1992 | US5105400 Method of magneto-optically recording and erasing information onto a magneto-optical information storage medium |
| 04/14/1992 | US5105399 Magneto-optical means for reading disks by comparing signals at leading and trailing edges of laser beam |
| 04/14/1992 | CA1298728C Optical memory element and manufacturing method thereof |
| 04/14/1992 | CA1298704C Magnetooptical recording medium |
| 04/08/1992 | EP0479577A2 Optical recording medium and process for producing the same |
| 04/08/1992 | EP0479521A2 Operational mode control for data storage apparatus using storage disk |
| 04/08/1992 | EP0479491A2 Reproducing apparatus for modifying signals read back from recorded data to avoid signal errors |
| 04/08/1992 | EP0479474A2 Magneto-optical recording medium |
| 04/08/1992 | EP0479109A1 Process for fabrication of magneto-optic recording medium |
| 04/08/1992 | EP0479082A2 Head position control device |
| 04/08/1992 | EP0478786A1 Magnetooptic recording medium, and method of magnetooptic recording and reproduction |
| 04/08/1992 | CN1060174A Optical disc recording apparatus |
| 04/08/1992 | CN1016218B Magneto optical recording media |
| 04/07/1992 | US5103435 Bias magnetic field moving apparatus for a photomagnetic recording apparatus |
| 04/07/1992 | US5103351 Multiple core magnetic head for magneto-optical recording apparatus |
| 04/02/1992 | WO1992005548A1 Hermetically sealed bias magnet assembly for magneto-optic disc drive |
| 04/02/1992 | CA2046707A1 Optical disk players having readback circuits with noise rejection and read signal retiming |
| 04/02/1992 | CA2046706A1 Controlling an optical disk drive using a mode set command |
| 04/01/1992 | EP0478329A1 Calibrating the light beam of an optical data storage system on insertion of a storage member |
| 04/01/1992 | EP0478276A2 Disk storage system |
| 04/01/1992 | EP0478202A1 Calibrating a data storage system relative to a removable data storage disk mounted in the system |
| 04/01/1992 | EP0478201A1 Re-writable data storage medium and data storage system including such a medium |
| 04/01/1992 | EP0478163A1 Multi-beam optical recording system and method |
| 04/01/1992 | EP0477892A2 Method of and apparatus for correcting edge interval of pit in optical recording/read-out apparatus |
| 04/01/1992 | EP0477701A2 Over-write capable magnetooptical recording medium having four-layered structure |
| 04/01/1992 | EP0477372A1 Transfer method |
| 03/31/1992 | US5101393 Optical position error detection using complementary steep angle reflections/transmissions |
| 03/31/1992 | US5101389 Optical information recording/reproducing apparatus |
| 03/31/1992 | US5101385 Magneto-optical information storage system for flexible media having maximum overwrite efficiency |
| 03/31/1992 | US5100741 Magneto-optic recording systems |
| 03/29/1992 | CA2046721A1 Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm |
| 03/28/1992 | CA2046697A1 Calibrating optical disk recorders to some parameters during disk spin up while defering calibration of other parameters |
| 03/25/1992 | EP0477031A1 Magnetic storage system and manufacturing method for a magnetic storage medium thereof |
| 03/25/1992 | EP0476894A2 Method of fabricating optical recording drums |
| 03/25/1992 | EP0476522A1 Optical head unit |
| 03/25/1992 | EP0476465A1 Magneto-optical data disc with Pt-containing read layer |
| 03/24/1992 | US5099470 Apparatus for reproducing information from opto-magnetic record medium |
| 03/24/1992 | US5099468 Optical information processing apparatus having offset adjusting circuit which can be exchanged together with optical head |
| 03/24/1992 | US5098649 Rare earth metal-iron group metal target, alloy powder therefor and method of producing same |
| 03/24/1992 | US5098541 Method of making magneto optic recording medium with silicon carbide dielectric |
| 03/18/1992 | EP0475765A1 Optical head for magneto-optical recording/reproducing apparatus |
| 03/18/1992 | EP0475761A2 File managing method |
| 03/18/1992 | EP0475673A1 Information recording reproducing apparatus |
| 03/18/1992 | EP0475626A2 Overwrite-capable magnetooptical recording medium allowing enlarged margin of laser power |
| 03/18/1992 | EP0475595A2 Recording and/or reproducing apparatus for optical discs |
| 03/18/1992 | EP0475558A2 Calibration of system for recording and readback of optically detectable data |
| 03/18/1992 | EP0475452A2 Use of a quasi-amorphous or amorphous zirconia dielectric layer for optical or magneto-optic data storage media |
| 03/18/1992 | EP0475446A2 Overwrite-capable magnetooptical recording medium allowing enlarged margin of high level beam intensity |
| 03/18/1992 | EP0475365A2 Tracking method for memory apparatus |
| 03/17/1992 | US5097464 Optical recording medium and optical recording/reproducing apparatus |
| 03/17/1992 | US5097455 Enhanced focus sending in optical information storage systems |
| 03/17/1992 | US5097443 Storage medium, storage method and stored information reading method |
| 03/17/1992 | US5096627 Method of molding optical recording drums |
| 03/11/1992 | EP0474505A2 Magnetooptic recording medium cartridge |
| 03/11/1992 | EP0474377A1 Optical disc recording apparatus |
| 03/11/1992 | EP0474052A1 Zone access method in an optical disk drive apparatus |
| 03/11/1992 | EP0474050A2 Magnetic optical disc |
| 03/11/1992 | EP0473785A1 Optical disc system and optical disc |
| 03/10/1992 | US5095478 Optical data storage medium having interference and flattening layers each having specific thickness for improved information reading and tracking reliability |
| 03/10/1992 | US5095476 Scanning apparatus with integrated beam separating and beam-splitting element for scanning a magneto-optical record carrier |
| 03/10/1992 | US5095472 Focusing error detecting system for optical head |
| 03/10/1992 | US5095470 Capacitance detection control circuit for positioning a magnetic head close to a magneto-optical disk |
| 03/10/1992 | US5095350 Magneto-optic memory medium |
| 03/10/1992 | US5094925 Rare earth-transition metal alloy |
| 03/05/1992 | WO1992003821A1 Optical scanning device |
| 03/04/1992 | EP0473492A2 Improvement in magneto-optical recording medium |
| 03/04/1992 | EP0473413A2 Magnetooptical recording apparatus |