| 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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| 12/23/1993 | WO1993026001A1 Method and apparatus for calibrating laser write power in a magneto-optical recording system |
| 12/22/1993 | EP0575200A1 Recording medium capable of suppressing resonance from recording and reproducing devices |
| 12/22/1993 | EP0574930A2 Magneto-optical disc |
| 12/22/1993 | CN1023264C Method apparatus, and medium for magneto-optical recording |
| 12/22/1993 | CN1023263C Controlling optical disk drive using mode set command |
| 12/21/1993 | US5272692 Data storage member having areas in which intensity-modulated signals are overlaid with magneto-optically recorded signals |
| 12/21/1993 | US5272685 Optical system for an information processing apparatus |
| 12/21/1993 | US5272684 Information recording method and information recording apparatus for magneto-optic recording information medium |
| 12/21/1993 | US5272550 Hologram system |
| 12/15/1993 | EP0573669A1 Magneto-optical overwrite recording process by which c/n ratio is improved, and magneto-optical overwrite recording apparatus which operates in this process |
| 12/14/1993 | US5270995 Method for recording and reproducing information by varying a work function of a recording medium and device for the same |
| 12/14/1993 | US5270994 Magneto-optical recording and reading method |
| 12/14/1993 | US5270987 Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor |
| 12/14/1993 | US5270966 Magneto-optical memory device for multi-wavelength recording and reproduction |
| 12/14/1993 | US5270879 Magneto-optical disk inspecting method and apparatus |
| 12/14/1993 | US5270290 Information recording medium and methods of recording and reproducing information on and from the information recording medium |
| 12/09/1993 | WO1993024929A1 Optical disk recorder/reproducer |
| 12/07/1993 | US5268893 Write power calibration utilizing least squares fit of read-back signals for moving media memory |
| 12/07/1993 | US5268882 Magnetic head holding apparatus |
| 12/07/1993 | US5268573 System for detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance |
| 12/01/1993 | CN1022956C Method and apparatus for writing and reading a magneto-optical record carrier |
| 11/30/1993 | US5267108 Flying head slider |
| 11/30/1993 | US5266502 STM memory medium |
| 11/25/1993 | WO1993023850A1 Read-only optomagnetic disk, and reproducing method and equipment |
| 11/24/1993 | EP0571227A2 Disc cartridge loading apparatus |
| 11/24/1993 | EP0571123A2 Disc reproduction display |
| 11/24/1993 | EP0571016A2 Method of and device for recording information on a record carrier having a recording layer which, when heated, undergoes an optically detectable change |
| 11/24/1993 | EP0570922A2 Reproducing apparatus |
| 11/24/1993 | CN1022872C Magneto-optical recording medium |
| 11/23/1993 | US5265230 Method and apparatus for determining sector status in a data storage device by writing a status of read-only, writable, or obliterated in an error recovery area of each sector |
| 11/23/1993 | US5265085 Simultaneous MO and ROM optical disk signal detection |
| 11/23/1993 | US5265079 Seek actuator for optical recording |
| 11/23/1993 | US5265074 Magneto-optical recording medium |
| 11/23/1993 | US5265073 Overwritable magneto-optical recording medium having two-layer magnetic films wherein one of the films contains one or more of Cu, Ag, Ti, Mn, B, Pt, Si, Ge, Cr and Al, and a method of recording on the same |
| 11/18/1993 | EP0570235A2 Optical disk |
| 11/18/1993 | EP0570191A2 Audio reproducing apparatus |
| 11/18/1993 | EP0570008A2 Sliding type magnetic head for magneto-optical recording |
| 11/16/1993 | US5263015 Magneto-optical recording media and overwrite recording method using the same |
| 11/16/1993 | US5263009 Focus servo circuit for a magneto-optical disk recording and reproducing apparatus |
| 11/16/1993 | US5263008 Magneto-optical disk device having a plurality of independently moving magneto-optical heads in the head window |
| 11/16/1993 | US5262981 Storage of information units in the nanometer range |
| 11/16/1993 | CA1324441C Optical disc |
| 11/10/1993 | EP0569054A2 Magneto-optical recording apparatus |
| 11/10/1993 | EP0568753A1 High-density optical data storage unit and method for writing and reading information |
| 11/10/1993 | EP0568706A1 Magnetooptical recording media |
| 11/09/1993 | US5260956 Laser drive circuit |
| 11/09/1993 | US5260927 Optical pickup device for recordable disc and dichroic mirror |
| 11/09/1993 | US5260921 Magnetooptical recording method |
| 11/09/1993 | US5260917 Signal reproduction apparatus |
| 11/09/1993 | CA1324213C Magnetooptical recording media |
| 11/03/1993 | EP0568009A2 Recording starting method for magneto-optical disk recording apparatus |
| 11/03/1993 | EP0324854B1 Optomagnetic recording medium and process for its manufacture |
| 11/03/1993 | CN1022651C Method of and apparatus for writing & reading magneto-optical record carrier |
| 11/02/1993 | US5258973 Method of pre-processing over-write capable magnetooptical recording medium, and pre-processed over-write capable magnetooptical recording medium |
| 11/02/1993 | US5258965 Photo-magnetic disk driving apparatus |
| 11/02/1993 | US5258237 Multilayer element |
| 11/02/1993 | CA1323786C Tilt adjustment mechanism for object lens driving device |
| 10/28/1993 | WO1993021638A1 Improved surface-enhanced raman optical data storage system |
| 10/28/1993 | WO1993021628A1 Improved optical disk structures for electron trapping optical memory media |
| 10/27/1993 | EP0567335A2 Magneto-optical recording medium |
| 10/27/1993 | EP0566998A2 Sliding-type magnetic head for magnetooptical recording |
| 10/27/1993 | EP0566989A2 Magneto-optical disc apparatus |
| 10/26/1993 | US5257250 Tracking-control target-position adjustment method |
| 10/26/1993 | US5257131 Polarization diffraction element and polarization detector employing the same |
| 10/26/1993 | US5256479 Ferromagnetic ultrafine particles, method of making, and recording medium using the same |
| 10/20/1993 | EP0565751A1 Optical recording method and apparatus therefor |
| 10/19/1993 | US5255263 Information reading system and record carrier and reading device for use in such a system |
| 10/19/1993 | US5255262 Multiple data surface optical data storage system with transmissive data surfaces |
| 10/19/1993 | US5255007 Method and apparatus for recording a pattern of areas of modified optical properties on an optical record carrier |
| 10/19/1993 | US5254182 Easy axis of magnetization perpendicular to film face; oxidation resistance |
| 10/14/1993 | WO1993020554A1 Selectively modifiable optical data storage |
| 10/14/1993 | DE4211502A1 Selektiv veränderbarer optischer Datenspeicher Selectively variable optical data storage |
| 10/13/1993 | EP0565381A2 Optical element and method of fabricating the same |
| 10/13/1993 | EP0565376A1 Optical information recording apparatus and method capable of coping with a plurality of card-like recording mediums of different reflectances |
| 10/13/1993 | EP0502950B1 Process for sputtering multilayers for magneto-optical recording |
| 10/13/1993 | CN1022444C Holding device for a record in a magneto-optical recording-and/or reproducing-set |
| 10/12/1993 | US5253245 Optical data storage tracking system |
| 10/12/1993 | US5253243 Recording and reproducing timing generating apparatus |
| 10/12/1993 | US5253236 Optical beam focusing and tracking system for an optical disk information storage device |
| 10/12/1993 | US5253233 Method of making a magneto-optical recording medium that includes a light interference layer having specified characteristics |
| 10/12/1993 | US5253232 Magneto-optical recording apparatus having a magnetic slider with increased rail width |
| 10/06/1993 | EP0564188A1 Perpendicular magnetic film, process for producing the same and magnetic recording medium having the same |
| 10/06/1993 | EP0564187A2 Recording and reproducing apparatus |
| 10/06/1993 | EP0564148A1 Magnetooptical information recording/reproducing apparatus and method using magnetic head |
| 10/06/1993 | EP0563484A1 Optical pick-up head apparatus |
| 10/06/1993 | CN1022353C Magneto-optical recording apparatus and energizing circuit |
| 10/05/1993 | US5251200 Tracking method for memory apparatus |
| 10/05/1993 | US5251196 Optical pick-up selectively reading and writing an optical and magneto-optical recorded medium |
| 10/05/1993 | CA1322791C Method of optically scanning an information plane and optical record carriers and scanning apparatuses suitable for use of said method |
| 09/29/1993 | EP0562646A2 Electro-magnetic actuator and optical disk |
| 09/29/1993 | EP0561775A1 Circuit for reversing a magnetic field. |
| 09/28/1993 | US5249171 Opto-magnetic pick-up device including phase difference correcting means |
| 09/28/1993 | US5249167 Optical pickup apparatus which includes a plate-like element for splitting a returning light beam into different light beams having different focussing point |
| 09/28/1993 | US5248565 Optical-thermal magnetic storage medium |
| 09/28/1993 | CA1322599C Floating type magneto-optic disk reading head system having external semiconductor laser resonator operating at orthogonal two mode oscillations |
| 09/21/1993 | US5247510 Increasing storage density of optical data media by detecting a selected portion of a light spot image corresponding to a single domain |
| 09/21/1993 | US5247509 Disk storage which automatically adjusts to optimum recording/reproducing level |
| 09/21/1993 | US5247508 Laser adjusting apparatus tracking control for use with an optical disc |
| 09/21/1993 | US5247496 Recording and/or reproducing apparatus for using magneto-optical disc |
| 09/21/1993 | US5247495 Optical magnetic disk with separate regions provided on it |