| 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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| 02/16/1993 | US5187703 Magneto-optical multilayer recording disk and method of reproducing the same |
| 02/16/1993 | US5187699 Method and apparatus for successively recording two EFM-modulated signals enabling detection of boundary condition for transitioning between signals |
| 02/16/1993 | US5187694 Magneto-optical recording medium comprising recording layer and thermal bias layer, and method for recording, erasing and overwriting on the medium |
| 02/16/1993 | US5187367 Cantilever type probe, scanning tunneling microscope and information processing device equipped with said probe |
| 02/10/1993 | EP0526841A1 Information reproducing circuit |
| 02/10/1993 | EP0526641A1 Method for reproducing signal in optically recording medium |
| 02/09/1993 | US5185733 Calibrating lasers for optical recording using a maximal readback signal amplitude as a criterion |
| 02/09/1993 | US5185732 Recording medium and recording and reproducing apparatus employing the recording medium |
| 02/03/1993 | EP0525776A2 Magneto-optical recording apparatus using the magnetic field modulation method |
| 02/03/1993 | EP0525705A2 Magneto-optical recording apparatus |
| 02/03/1993 | EP0525192A1 Optically recording medium |
| 02/03/1993 | EP0525191A1 Optically recording medium |
| 02/03/1993 | EP0222916B1 External magnetic field reversing apparatus for photomagnetic disks |
| 02/02/1993 | US5184342 Information processing device |
| 02/02/1993 | US5184335 Method and system for erasing previously recorded domains in a magneto-optic recording medium |
| 01/28/1993 | DE4223850A1 Improved magneto=optical recording medium - has rare-earth element transition metal element alloy recording layer and tantalum pent:oxide adhesion promoting and interference layer |
| 01/27/1993 | EP0524839A2 Magnetooptical information record/reproducing method employing floating slider supporting magnetic head, and apparatus therefor |
| 01/27/1993 | EP0524799A2 Magnetooptic recording medium |
| 01/27/1993 | EP0524745A2 Magneto-optical recording medium whereon recording is carried out with an overwriting function |
| 01/27/1993 | EP0524628A1 Optical magnetic disk recording/reproducing apparatus |
| 01/27/1993 | EP0524449A1 Magneto-optical recording medium |
| 01/27/1993 | EP0524315A1 Method for reproducing signal in optically recording medium |
| 01/26/1993 | US5182781 Optical device for the observation of an elongated object |
| 01/26/1993 | US5182742 Recording and/or reproducing apparatus with a disc cartridge temperature sensor |
| 01/26/1993 | US5182741 Optical disk recording/reproducing device utilizing a constant angular velocity method with a constant linear velocity formatted optical disk |
| 01/26/1993 | US5182735 Magneto-optic readout apparatus using polarization switching of readout beam |
| 01/26/1993 | US5182734 Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics |
| 01/26/1993 | US5182724 Information processing method and information processing device |
| 01/21/1993 | WO1993001596A1 Process for shortening the access time (track control circuit) |
| 01/20/1993 | EP0523944A2 Magneto optical recording medium and method |
| 01/20/1993 | EP0523900A2 method of detecting information from an optical or magnetooptical recording medium, and an optical recording medium |
| 01/20/1993 | EP0523676A2 Information recording/reproducing method for recording and/or reproducing information on information recording carrier by use of probe electrode, information recording/reproducing apparatus executing the method, and information recording carrier suitable for the method |
| 01/20/1993 | EP0523570A2 Optical pickup device |
| 01/19/1993 | US5181161 Signal reproducing apparatus for optical recording and reproducing equipment with compensation of crosstalk from nearby tracks and method for the same |
| 01/13/1993 | EP0522840A2 Magneto-optical recording medium |
| 01/13/1993 | EP0522543A1 A magnetic field modulation magnet-optical recording apparatus in which an FM modulator and a magnetic head driving circuit are used in common |
| 01/13/1993 | EP0522500A2 Optical head device |
| 01/13/1993 | EP0522168A1 Surface atom machining method and apparatus |
| 01/12/1993 | US5179546 Magneto-optical disk and process for manufacturing the same |
| 01/12/1993 | US5179544 Control system for the magnetic head of a magneto-optical disc apparatus |
| 01/12/1993 | CA1312671C Record face indentifying device for optical magnetic record medium |
| 01/09/1993 | CA2073310A1 Method of detecting information from magnetooptical recording medium, method of detecting information from optical recording medium, and optical recording medium |
| 01/07/1993 | WO1993000681A1 Opto-magnetic data recording system |
| 01/07/1993 | WO1993000677A1 Method and apparatus for detecting data track misregistration |
| 01/07/1993 | EP0521619A2 Multiple data surface optical data storage system and method |
| 01/07/1993 | EP0521487A1 Information recording medium and reproducing device therefor |
| 01/07/1993 | CA2090416A1 Data recording system of magneto-optic type |
| 01/05/1993 | US5177726 Apparatus for recording information on and/or reproducing information from optical disc including focus servo initialization using wobble pits |
| 01/05/1993 | US5176943 Optical recording medium with antistatic hard coating |
| 12/30/1992 | EP0520813A2 Magneto-optical recording and reproducing apparatus |
| 12/30/1992 | EP0519949A1 Platinum or palladium/cobalt multilayer on a zinc oxide or indium oxide layer for magneto-optical recording. |
| 12/30/1992 | CN1019703B Magnetooptical recording media |
| 12/30/1992 | CN1019701B Optically readable record carrier of inscribable type, apparatus for manufacturing such a record carrier, and apparatuses for recording and/or reading information on/from such record carrier |
| 12/29/1992 | US5175721 Magneto-optical recording and reading device with initilization |
| 12/29/1992 | US5175719 Apparatus for detecting an unrecorded optical disc |
| 12/29/1992 | US5175715 Sensitive disk having absorbing layers on either side of recording layer |
| 12/29/1992 | US5175714 Method of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditions |
| 12/23/1992 | WO1992022898A1 Method for recording on disc |
| 12/23/1992 | EP0519768A2 High density information storage carrier and method of reading such a carrier |
| 12/23/1992 | EP0519729A2 Magnetic head driving circuit |
| 12/23/1992 | EP0519018A1 Membrane memory system |
| 12/23/1992 | CN1019613B Circuit device for identifying type of optical recording medium |
| 12/22/1992 | US5173955 Magnetooptic device and its driving method |
| 12/22/1992 | US5173885 Magneto-optical recording medium and system for use with short wavelength light |
| 12/16/1992 | EP0518109A1 Apparatus for vacuum treatment |
| 12/15/1992 | US5172369 Optical pickup, optical information recording carrier and recording and reproducing apparatus thereof |
| 12/15/1992 | US5172364 Magneto-optic recording apparatus with controlled magnetic field generation |
| 12/09/1992 | EP0517490A2 Multiple data surface optical medium and data storage system |
| 12/08/1992 | US5170390 Optical recording element and driving system |
| 12/08/1992 | US5170383 Magneto-optical data recording system |
| 12/08/1992 | US5170382 Magneto-optical recording apparatus for creating magnetic domains with reduced tails |
| 12/08/1992 | US5169504 Method for preparing a magneto optic memory |
| 12/05/1992 | CA2066153A1 Multiple data surface data storage system and method |
| 12/02/1992 | EP0516178A2 Optical information recording medium in which a protective layer comprises a mixture layer containing ZnS and SiO2 |
| 12/02/1992 | EP0516125A2 Rewritable disk and disk apparatus |
| 12/01/1992 | US5168484 Magnetic head lifting device for magneto-optical recording/reproducing apparatus including drive means responsive to a PLL circuit |
| 12/01/1992 | US5168483 Magnetic head position control apparatus including drive means responsive to a summed signal from a capacitance detection electrode and a disk size detector means |
| 12/01/1992 | US5168482 Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer |
| 11/26/1992 | WO1992021125A1 Optical data storage and retrieval system and method |
| 11/26/1992 | DE4206268A1 Glass compsn. capable of being surface hardened - by ion exchange using oxide(s) of silicon, aluminium, lithium, sodium and zirconium |
| 11/25/1992 | EP0515222A2 Magneto-optical storage device |
| 11/25/1992 | EP0515219A2 Magneto-optic disk apparatus |
| 11/25/1992 | EP0514703A2 A bearing ring with low sliding friction for an optical disk |
| 11/25/1992 | CN1019242B Optical-light recording medium |
| 11/25/1992 | CN1019241B Magnetic light recorder |
| 11/24/1992 | US5166989 Integrated polarization detection system |
| 11/24/1992 | US5166919 Atomic scale electronic switch |
| 11/24/1992 | US5166914 Data recording/reproducing apparatus with two-dimensional equalizer for crosstalk cancellation |
| 11/24/1992 | US5166913 Optical disk device for record and reproduction of additional information besides reproducing of basic information |
| 11/19/1992 | EP0513668A1 Magneto-optical recording medium |
| 11/19/1992 | DE4138109A1 Optical recording disc mfr. - forming sandwich of non-conductive, recording and protective film on substrate, and covering with protective plate |
| 11/17/1992 | US5165089 Optical disk players having readback circuits with noise rejection and read signal retiming |
| 11/17/1992 | US5164926 Over-write capable magnetooptical recording medium with four magnetic layered structure dispensing with external initializing field |
| 11/17/1992 | US5164925 Opto-magnetic recording apparatus having over-write and non-over-write modes |
| 11/17/1992 | CA1310416C Magnetooptical recording medium |
| 11/17/1992 | CA1310415C Optical memory device |
| 11/17/1992 | CA1310412C Optical record /reproduction apparatus |
| 11/11/1992 | EP0512915A1 Integrated magneto-optical read and write head and production method |
| 11/11/1992 | EP0512555A1 Optical information recording medium in which a protective layer comprises a Ni-Cr alloy layer |
| 11/10/1992 | US5163035 Constant linear velocity recording servo circuit for write-once type compact disk |