| 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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| 06/09/1999 | CN1218959A Method for recording compressed audio frequency data on medium and method for transmitting said data |
| 06/08/1999 | US5910940 Storage medium having a layer of micro-optical lenses each lens generating an evanescent field |
| 06/08/1999 | US5910938 Light signal detection circuit |
| 06/08/1999 | US5910932 Optical disk and optical disk system with numerical aperture of objective lens related to protective layer thickness of optical disk |
| 06/08/1999 | US5910867 Magnetic head device with integrally molded conductive elastic body and resin body |
| 06/08/1999 | US5910517 Comprising perfluoro surfactants in admixture with nonfluorinated, copolymerizable, radiation curable prepolymers |
| 06/03/1999 | WO1999027532A1 Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk |
| 06/02/1999 | EP0920005A1 Data recording apparatus and methods |
| 06/02/1999 | EP0919996A2 Phase change optical disk having a reflection layer of noble metal, and optical data storage system therefor |
| 06/02/1999 | CN1218255A Semiconductor laser device |
| 06/01/1999 | US5909415 Positioning control system which generates a servo-error signal in accordance with a difference between detection currents |
| 06/01/1999 | US5909411 Magnetically coupled apparatus for inverting a bias field for magneto-optic recording and erasing |
| 06/01/1999 | US5909410 Optical magnetic recording medium and optical magnetic reproducing method |
| 05/27/1999 | WO1999026243A1 System and method of encoding for identifying a given surface among several identically patterned disk surfaces |
| 05/27/1999 | WO1999026240A1 Optical recording systems and media with integral near-field optics |
| 05/27/1999 | WO1999026239A1 Method of processing signals for optical disk device and optical disk device |
| 05/27/1999 | WO1999026236A2 Method for thermal crosstalk control on optical media |
| 05/26/1999 | EP0918323A2 Optical disk |
| 05/26/1999 | EP0917713A1 Magneto-optic recording system employing near field optics |
| 05/25/1999 | US5907528 Apparatus for demodulating a digital FM signal which normally has signal inversions at data bit boundaries |
| 05/25/1999 | US5907525 Magneto-optical disk, optical pickup, and magneto-optical disk drive |
| 05/20/1999 | WO1999024978A1 Magnetic recorder, magnetic recording/reproducing apparatus, and magnetic recording method |
| 05/20/1999 | WO1999024973A1 Highly oriented magnetic thin films, recording media, transducers, devices made therefrom and methods of making |
| 05/20/1999 | WO1999024970A2 Slider and electro-magnetic coil assembly |
| 05/20/1999 | WO1999024858A1 A dual actuator optical positioning system |
| 05/19/1999 | EP0917136A1 Optical information storage apparatus |
| 05/19/1999 | EP0715305B1 Method for recording sector control information on magneto-optical disk |
| 05/18/1999 | US5905702 Optical information recording apparatus and method capable of coping with a plurality of card-like recording mediums of different reflectances |
| 05/18/1999 | US5905700 Multiple data layer optical disk with recorded information identifying the type of tracking |
| 05/18/1999 | US5905696 Magneto-optical disk drive |
| 05/18/1999 | US5905695 Optical information recording/reproducing apparatus and method capable of selecting recording waveform in correspondence with characteristics of medium |
| 05/18/1999 | US5905573 System for measuring the dimensions of structures on an object |
| 05/14/1999 | WO1999023660A1 Recording and reproducing apparatus provided with teletext recording capability |
| 05/14/1999 | WO1999023648A1 Optical head, optical recorder, microlens and manufacture of microlens |
| 05/14/1999 | WO1999023646A1 Flying head in a near-field optical storage system |
| 05/12/1999 | EP0915462A1 Magneto-optical recording medium, its reproducing method and reproducer |
| 05/12/1999 | CN1216628A Optical recording method and apparatus using this method |
| 05/11/1999 | US5903533 Disc having at least one servo area pit formed out of phase for servo area identification |
| 05/11/1999 | US5903529 Optical pickup device and disk player apparatus |
| 05/11/1999 | US5903526 Magneto-optical recording medium having multiple magnetic layers |
| 05/11/1999 | US5903525 Coil for use with magneto-optical head |
| 05/11/1999 | US5903296 Photoelectric sensor, information recording system and information recording and reproducing method |
| 05/06/1999 | EP0913819A1 Tape recorder |
| 05/06/1999 | EP0913818A1 Magneto-optical recording medium, its reproducing method and reproducer |
| 05/06/1999 | EP0913817A2 Optical data storage device with simplified light path adjustment of optical system |
| 05/06/1999 | EP0731970B1 Rom-ram-disk |
| 05/04/1999 | US5901130 Loading mechanism for a disc recording and/or reproducing apparatus |
| 05/04/1999 | US5901122 Focus drive circuit and focus search method based on relative positional relationship between disc and objective lens |
| 05/04/1999 | US5901121 Optical storage apparatus having improved eccentricity correction abilities |
| 05/04/1999 | US5901118 Magneto-optical recording medium having a readout layer and a recording layer |
| 05/04/1999 | US5901015 Magnetic head apparatus having a reduced thickness |
| 05/04/1999 | US5900619 Optical device comprising a photodetector for detecting light scattered outside a diffraction limit of an objective lens |
| 05/04/1999 | US5900010 Apparatus for recording magneto-optic disks |
| 05/04/1999 | CA2135986C Optical information recording/reproducing apparatus and method with function of adjusting reproducing power |
| 04/28/1999 | EP0911830A2 Reproducing apparatus, recording apparatus, and recording medium |
| 04/28/1999 | EP0911822A2 Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein |
| 04/28/1999 | EP0911821A1 Magneto-optical recording medium and magneto-optical recorder using the medium |
| 04/28/1999 | EP0911653A1 Immersion system |
| 04/28/1999 | CN1215207A Magnetic and optical record reproducing device and method thereof |
| 04/28/1999 | CN1215206A Optical picker |
| 04/28/1999 | CN1215204A Reproducing device, recording device and recording medium |
| 04/27/1999 | US5898663 Optical recording medium with address information prepit for the same track at opposite boundaries of the same track |
| 04/27/1999 | US5898661 Optical information storage unit |
| 04/27/1999 | US5898607 Recording/reproducing method and recording/reproducing apparatus |
| 04/27/1999 | US5898167 Optical pick-up head and integrated type optical unit for use in optical pick-up head |
| 04/27/1999 | US5897652 Memory control device and address generating circuit |
| 04/27/1999 | US5897631 Randomly accessible recording medium, and apparatus and method for managing data thereon |
| 04/27/1999 | CA2148748C Method and apparatus for retreiving data from a storage device |
| 04/21/1999 | EP0910078A2 Optical device for photomagnetic recording, used in a recording/reproducing apparatus |
| 04/21/1999 | EP0910077A2 Magneto-optical recording/reproducing apparatus and method |
| 04/21/1999 | EP0910076A2 Magneto-optical disc and manufacturing method thereof |
| 04/21/1999 | EP0910070A2 Optical information recording/reproducing apparatus |
| 04/21/1999 | CN1214791A Compositions comprising cystalline-like transition metal material and methods of use thereof |
| 04/21/1999 | CN1214511A Cartridge loading apparatus with improved parking arm |
| 04/21/1999 | CN1214510A Improved cartridge loading apparatus with tilting bias coil assembly |
| 04/21/1999 | CN1214509A Cartridge loading apparatus with improved base plate and cartridge receiver latch |
| 04/21/1999 | CN1214508A Cartridge loading apparatus with improved cartridge receiver |
| 04/21/1999 | CN1214507A Disk drive system and method for operating same |
| 04/21/1999 | CN1214505A Method and apparatus for controlling bias levels in magneto-optical recording device |
| 04/20/1999 | US5896366 Optical recording medium having a plurality of recorded pits of different heights and depths |
| 04/20/1999 | US5896365 Optical information recording medium capable of recording in lands and grooves without a track-jumping operation; optical information recording/reproducing apparatus using, and master disk exposure apparatus for producing the same |
| 04/20/1999 | US5896364 Optical recording medium having both serial data and random data recording areas |
| 04/20/1999 | US5896360 Optical pickup device and optical disc driving apparatus having light polarizing hologram |
| 04/20/1999 | US5896354 Optical storage apparatus having switching control circuit for controlling an envelope detecting function in accordance with a medium type or access type |
| 04/20/1999 | US5896350 Magneto-optical recording medium and method of producing the same |
| 04/15/1999 | WO1999018570A1 A method and apparatus for providing enhanced transfer rate for a constant angular velocity storage disc |
| 04/15/1999 | WO1999018459A1 Optical head device and a diffraction element suitable for the device, and a method of manufacturing the diffraction element and the optical head device |
| 04/15/1999 | DE19846166A1 Magnetic head for magneto-optic data storage system, e.g. minidisk |
| 04/14/1999 | EP0908879A2 Optical information storage apparatus |
| 04/14/1999 | EP0908878A2 Optical information storage unit |
| 04/14/1999 | EP0908877A2 Optical information storage unit |
| 04/14/1999 | EP0908874A1 Magneto-optic recording medium and optical information storage unit |
| 04/14/1999 | EP0908872A2 Optical information storage unit |
| 04/14/1999 | EP0908871A2 Optical information storage apparatus |
| 04/14/1999 | CN1214142A Optical reproduction method and optical information appts. |
| 04/14/1999 | CN1213826A Cartridge-loading apparatus and method |
| 04/13/1999 | US5894468 Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level |
| 04/13/1999 | US5894465 Transmissive data storage media and an optical head using holographic or acousto-optical deflection |
| 04/13/1999 | US5894463 Focusing servo controlling apparatus |
| 04/13/1999 | US5894462 Magnetooptical disk focus and tracking servo for a magnetooptical disk servo device |