| 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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| 10/12/1999 | US5966350 Enhanced resolution; multilayer; gadolinium, ferric, cobalt alloy |
| 10/12/1999 | US5966349 Rewritable high density magneto-optical disk |
| 10/12/1999 | US5966348 Information reproducing method and apparatus for reproducing information by moving magnetic wall |
| 10/12/1999 | US5966347 Apparatus and method for reproducing data from a magneto-optic recording medium |
| 10/12/1999 | US5965286 Magneto-optical recording medium |
| 10/12/1999 | US5965285 Magneto-optical recording medium and reproducing method for the same |
| 10/12/1999 | US5965228 Information carrier, method for producing same |
| 10/07/1999 | WO1999050844A1 Optical data storage system utilizing polarization maintaining optical fiber |
| 10/07/1999 | WO1999050843A1 Optical data storage system with means for reducing noise from spurious reflections |
| 10/07/1999 | WO1999050842A1 Low-birefringence optical fiber for use in an optical data storage system |
| 10/07/1999 | WO1999050841A1 Low noise optical storage system based on an optical polarimetric delay line |
| 10/07/1999 | WO1999050833A1 Method and apparatus for magnetic recording |
| 10/07/1999 | WO1999050692A1 Polarizing diffraction grating and magneto-optical head made by using the same |
| 10/07/1999 | WO1999037013A9 Optical microswitch having electrostatic microactuator and method for use thereof |
| 10/07/1999 | WO1999026236A9 Method for thermal crosstalk control on optical media |
| 10/06/1999 | EP0947984A2 Method and apparatus for manufacturing information storage devices |
| 10/06/1999 | EP0644543B1 Disk recording apparatus |
| 10/05/1999 | US5963532 Optical system |
| 10/05/1999 | US5963525 Process for reading information |
| 10/05/1999 | US5963521 Recording and/or reproducing method and apparatus with dubbing mode |
| 10/05/1999 | US5963516 Tracking control apparatus of optical disc apparatus and method of same |
| 10/05/1999 | US5963512 Recording/reproducing method of magneto-optical recording medium and drive system for magneto-optical recording medium |
| 10/05/1999 | US5963396 Glide head with an outside active rail |
| 10/05/1999 | US5962154 Demand for further enhancing the recording density of the magneto-optical disc to thereby provide a recording medium of large capacity has been increasing. |
| 10/05/1999 | US5962126 Method and apparatus for reproducing data from a magneto-optical recording medium having a readout layer, transfer layer and recording layer |
| 09/30/1999 | WO1999049455A2 Integrated micro-optical systems |
| 09/29/1999 | EP0945859A2 Optical head, method for fabricating an optical head, and apparatus for fabricating an optical head |
| 09/29/1999 | CN1230278A Floating optic head with dynamic mirror |
| 09/28/1999 | US5959961 Optical recording medium having multiple recording layers and method for recording and reproducing thereof |
| 09/28/1999 | US5959948 Recording and reproducing apparatus |
| 09/28/1999 | US5959947 Apparatus and method for identifying and accessing a desired track of an optical disk |
| 09/28/1999 | US5959943 Information recording medium with clock information therein |
| 09/28/1999 | US5959942 Method and apparatus for reading a magneto-optical recording medium with asymmetrical edges |
| 09/28/1999 | US5959280 Multi-standard optical disk reading apparatus and method of reading using same |
| 09/28/1999 | US5958575 Multilayer; stacks of cobalt, platinum and rare earth metal layers |
| 09/28/1999 | CA2047664C Data recording method and data reproducing apparatus |
| 09/23/1999 | WO1999048096A2 Recording/reproduction and/or editing of real time information on/from a disc like record carrier |
| 09/23/1999 | WO1999048095A2 Method and apparatus for simultaneously recording and reproducing real time information on/from a disc like record carrier |
| 09/23/1999 | DE19911730A1 Optical disc drive for double-sided discs |
| 09/23/1999 | CA2291145A1 Method and apparatus for simultaneously recording and reproducing real time information on/from a disc like record carrier |
| 09/23/1999 | CA2290498A1 Recording/reproduction and/or editing of real time information on/from a disc like record carrier |
| 09/22/1999 | EP0944052A2 Optical information storage unit |
| 09/22/1999 | EP0944051A2 Optical storage apparatus and recording and reproducing method of optical storage medium |
| 09/22/1999 | EP0944049A2 Optical head, disk apparatus, method for manufacturing optical head and optical element |
| 09/22/1999 | CN1229230A Optical storage apparatus and recording and reproducing method of optical storage medium |
| 09/21/1999 | US5956302 Optical pick-up device and method using a high-density double diffraction grating |
| 09/21/1999 | US5956297 Signal reproducing apparatus using movement of magnetic wall |
| 09/21/1999 | US5956296 Information reproducing apparatus for reproducing information by magnetic wall movement |
| 09/21/1999 | US5956295 Magneto-optical disk drive supporting a direct-over-write operation and a write-after-erase operation |
| 09/21/1999 | US5956214 Magnetic head drive mechanism in photo-electro-magnetic disk drive device |
| 09/21/1999 | US5955191 Magneto-optical recording medium and a reproducing method using such a medium |
| 09/16/1999 | DE19910109A1 Optical recording and reproduction method enables a small dia. light spot to be projected onto an optical medium such as an optical disk |
| 09/16/1999 | DE19811102A1 Magnetic tape device for reading and writing data from and to a magnetic tape enables data to be read at a tape speed faster than the normal reproduction speed |
| 09/15/1999 | CN1228585A Storage unit, optical recording medium and information recording method |
| 09/14/1999 | US5953310 Optical recording medium using land/groove recording |
| 09/14/1999 | US5953309 Optical disk having logical tracks and dummy sectors in each zone, and optical disk drive device for such an optical disk |
| 09/14/1999 | US5953308 Disc player with alternating ascending/descending guide devices |
| 09/14/1999 | US5953297 Disk-shaped recording medium and disk recording or reproducing device |
| 09/14/1999 | US5953296 Optical information recording/reproducing apparatus and method with automatic servo loop adjustment function |
| 09/14/1999 | US5953289 For reproducing information on a magneto-optical medium |
| 09/14/1999 | US5952094 Magneto-optical recording medium |
| 09/08/1999 | EP0939955A1 Flying optical head with dynamic mirror |
| 09/07/1999 | US5949747 Test recording method and optical information recording/reproducing apparatus for determining an optimum power of the light output from a light source in erasing pieces of information recorded on a land and groove of a recording medium |
| 09/07/1999 | US5949746 Method for reproducing information recorded on an optical recording medium having a pre-formed recording track which is offset along its width to record frame sync signals of the information recorded on the medium |
| 09/07/1999 | US5949743 Magnetooptical recording medium having a bias layer related by Curie temperature to a writing layer, which is capable of being overwritten by light modulation |
| 09/07/1999 | US5949602 Method and apparatus for measuring head deviation and method and apparatus for recording/reproducing data |
| 09/07/1999 | US5949600 Signal reproduction method and magnetic recording and reproducing apparatus using tunnel current |
| 09/07/1999 | US5948497 High stability silver based alloy reflectors for use in a writable compact disk |
| 09/07/1999 | CA2066087C Magneto-optical recording medium |
| 09/02/1999 | WO1999034355A3 Method for reading information and device for realising the same |
| 09/02/1999 | WO1999026236A3 Method for thermal crosstalk control on optical media |
| 09/01/1999 | EP0939399A2 Optical recording medium, and method of manufacturing same |
| 09/01/1999 | CN1227382A Optical recording medium, and method of manufacturing same |
| 08/31/1999 | US5946288 Optical recording medium having recording pits of different shapes |
| 08/31/1999 | US5946284 Disk apparatus using ferroelectric thin film |
| 08/31/1999 | US5946281 Laminated proximity field optical head and optical information recording and reproducing device |
| 08/31/1999 | US5946275 Optical readout method with a direction of a magnetic field applied to a recording medium changed with a signal, and a system therefor |
| 08/31/1999 | US5945228 Readout magnetic film which is a perpendicular magneto-anisotropy film in first temperature range and an in-plane magneto-anisotropy film in second temperature range, resolution, high density recording |
| 08/25/1999 | EP0938083A2 Optical storage device |
| 08/25/1999 | EP0818041B1 Spare and calibration sector management for optical worm media |
| 08/25/1999 | EP0715304B1 Method for recording sector control information on magneto-optical disk |
| 08/24/1999 | US5943312 Sliding-type magnetic head for magnetooptical recording |
| 08/24/1999 | US5943311 Apparatus for recording and reproducing information |
| 08/24/1999 | US5943188 Magnetic head device |
| 08/24/1999 | US5942744 Card drive apparatus and card |
| 08/19/1999 | WO1999041758A1 Anticorrosive magnetic nanocolloids protected by precious metals |
| 08/19/1999 | WO1999041741A1 Information recording apparatus |
| 08/19/1999 | DE19848692A1 Information recording device with optical and magnetic recording heads for magneto optical disc unit |
| 08/19/1999 | DE19806167A1 Edelmetall-geschützte, antikorrosive magnetische Nanokolloide Precious metal protected anticorrosive magnetic nano colloids |
| 08/19/1999 | CA2320940A1 Anticorrosive magnetic nanocolloids protected by precious metals |
| 08/18/1999 | CN1226007A Polarization separating element, manufacturing method and optical pick-up apparatus |
| 08/17/1999 | US5940549 Optical system and method using optical fibers for storage and retrieval of information |
| 08/17/1999 | US5940364 Optical disk including wobbled guiding groove composed of pits, optical disk manufacturing apparatus, and optical disk recording/reproducing apparatus |
| 08/17/1999 | US5940357 Apparatus for recording and/or reproducing information and/or from optical information record disk |
| 08/17/1999 | US5940314 Ultra-high density memory device |
| 08/17/1999 | US5939187 Magneto-optical recording medium |
| 08/17/1999 | CA2191536C A method and a system of optical disk auto-discrimination |
| 08/12/1999 | WO1999040576A1 Optical disc device |
| 08/11/1999 | EP0935244A2 Optical information detection apparatus |
| 08/11/1999 | EP0935242A1 Optical disc type recording medium |