| 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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| 12/16/1997 | US5698911 Voice coil motor |
| 12/16/1997 | US5698312 Magneto-optical recording medium and method for making the same |
| 12/16/1997 | CA2131813C Improved surface-enhanced raman optical data storage system |
| 12/10/1997 | EP0811972A2 Optical disk recording apparatus |
| 12/10/1997 | EP0811968A2 Magneto optical memory element |
| 12/10/1997 | CN1167385A Audio-frequency signal compressing method |
| 12/09/1997 | US5696755 System for minimizing the effects of scratches on recording media |
| 12/09/1997 | US5696752 Low noise atip detection from an optical recording medium with wobbled grooves |
| 12/09/1997 | US5696750 Optical head apparatus for different types of disks |
| 12/09/1997 | US5696745 Apparatus and method for detective a sync pattern and an address mark within data provided from a recording medium |
| 12/09/1997 | US5696742 Optical disk device for reproducing address information from wobbled groove |
| 12/09/1997 | US5695863 Magneto-optical recording medium |
| 12/04/1997 | DE19722466A1 Recording and reproduction component system especially for CD and MD |
| 12/03/1997 | EP0810594A2 Magneto-optical recording medium |
| 12/03/1997 | EP0810589A2 Optical pickup device with a plurality of laser couplers |
| 12/03/1997 | CN1166883A Method and apparatus for controlling access to recording disk |
| 12/03/1997 | CN1166671A Apparatus and method for reproducing optical diskprint head |
| 12/02/1997 | US5694384 Method and system for measuring Kerr rotation of magneto-optical medium |
| 12/02/1997 | US5694382 Blank sector detection for optical disk drive |
| 12/02/1997 | US5694379 Magneto-optical recording medium and recording apparatus therefor |
| 12/02/1997 | US5694247 Optical transmissive component with anti-reflection gratings |
| 12/02/1997 | US5693200 Low pressure sputtering of alternating layers of cobalt and platinum onto an indiuim oxide-tin oxide seed layer, for improvement of coercive force and squareness of the kerr hysteresis loop |
| 11/27/1997 | WO1997044780A1 Shape memory alloy recording medium, storage devices based thereon, and method for using these storage devices |
| 11/26/1997 | EP0809243A2 Optical disk having a large storage capacity |
| 11/26/1997 | EP0809240A2 Optical recording medium |
| 11/26/1997 | EP0809239A2 Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam |
| 11/26/1997 | EP0808498A1 Overcoat for optical recording medium |
| 11/25/1997 | US5691967 Recording or reproducing apparatus having a spindle servo control runaway prevent feature |
| 11/25/1997 | US5691966 Recording eight digital audio channels on a single magneto optical disk |
| 11/25/1997 | US5691965 Actuator comprising a rotatable magnet body; actuator unit comprising the actuator and a control system; magneto-optical device comprising the actuator, and scanner comprising the actuator |
| 11/25/1997 | US5691963 Magneto-optical recording device using light-modulated technic without an initial magnetic field |
| 11/25/1997 | US5691830 Holographic optical system including waveplate and aliasing suppression filter |
| 11/25/1997 | US5691091 Optical storage process |
| 11/25/1997 | US5691072 Magneto-optical recording medium and method of reproducing information recorded on such medium |
| 11/19/1997 | CN1165374A Optical disc and disc cartridge |
| 11/19/1997 | CN1165371A Optical pickup and opto-magnetic signal reproducing apparatus |
| 11/19/1997 | CN1165368A Motor control apparatus, motor control method, disk apparatus and disk access method |
| 11/18/1997 | US5689494 Surface atom fabrication method and apparatus |
| 11/18/1997 | US5689482 Disc drive device operable with different discs that may exhibit different linear velocities or circumferential recording densities |
| 11/18/1997 | US5689480 Magneto-optic recording system employing near field optics |
| 11/18/1997 | US5689479 Magneto-optical recording apparatus |
| 11/18/1997 | US5689478 Magnetic head for magneto-optical recording and magneto-optical recording apparatus in which a magnetic core mounted to a slider has particular dimensions and properties |
| 11/18/1997 | US5689391 Magneto-optic multitrack reading head having a plurality of reflective rays |
| 11/18/1997 | US5688574 Comprising metallic layer, first protective layer, recording layer containing germanium, tellurium, antimony and selenium, second protective layer, reflecting layer on substrate; conformed to compact disk standard |
| 11/12/1997 | EP0806003A1 Methods and apparatus for controlling access to a recording disk |
| 11/12/1997 | CN1164736A Disk type recording medium |
| 11/11/1997 | US5687397 System for expansion of data storage medium to store user data |
| 11/11/1997 | US5687156 Calibration of lasers that produce multiple power output levels of emitted radiation |
| 11/11/1997 | US5687153 Optical head device and optical information apparatus using a lithium niobate hologram with divisional areas to diffract light to corresponding photo detector areas |
| 11/11/1997 | US5687150 Apparatus for and method of recording information, and apparatus for recording and reproducing information |
| 11/11/1997 | US5687147 Servo control method and apparatus for an opto magnetic disc |
| 11/11/1997 | US5687143 Reproducing apparatus having an optical head system |
| 11/11/1997 | US5687142 Disc apparatus having a plurality of reading/recording head driving manners for disc track seeking movement |
| 11/11/1997 | US5687141 Method and apparatus for recording information on magnetooptical recording medium while canceling external stray magnetic field |
| 11/05/1997 | EP0805443A2 Optical disc dubbing apparatus (II) |
| 11/05/1997 | EP0805442A2 Optical disc dubbing apparatus (I) |
| 11/05/1997 | CN1164293A Method and apparatus for storing data using spin-polarized electrons |
| 11/05/1997 | CN1164095A Optical storage apparatus |
| 11/04/1997 | US5684784 CAV recording/ reproducing apparatus for dividing input data in an amount proportional if the radial lengths of a plurality of recording areas |
| 11/04/1997 | US5684780 Optical pickup device having optical element exhibiting polarized light selectivity loaded thereon and optical apparatus having the optical pickup device loaded thereon |
| 11/04/1997 | US5684777 Disc loading mechanism for a disc recording and/or reproducing apparatus |
| 11/04/1997 | US5684776 Cartridge-loading apparatus with improved parking arm |
| 11/04/1997 | US5684772 Magneto-optical disc recording and reproducing system with level clamping |
| 11/04/1997 | US5684769 Optical recording/playback apparatus incorporating an address reproducing amplifier having a switchable gain for reproducing address data and MO recorded data |
| 11/04/1997 | US5684765 Optical recording method and control |
| 11/04/1997 | US5684764 Magneto-optical recording medium having a plurality of magnetic layers |
| 11/04/1997 | US5684763 Optical recording/reproducing device having control for reducing vibrational noise during recording by slowing moving speed of pickup |
| 11/04/1997 | US5684762 Opto-magnetic head apparatus |
| 11/04/1997 | US5684522 Method of recording information on ferroelectric material using polarization |
| 11/04/1997 | US5683803 Multilayer |
| 10/29/1997 | EP0803870A2 Magneto-optical recording medium |
| 10/29/1997 | EP0803868A2 Optical element and optical pickup device comprising the same |
| 10/29/1997 | EP0803866A2 Optical storage apparatus |
| 10/29/1997 | EP0803864A2 Optical storage apparatus |
| 10/29/1997 | CN1163451A Mixed recording system device |
| 10/29/1997 | CN1163450A Optical storing device |
| 10/28/1997 | US5682374 Recording medium having a recorded phase reference signal for fine adjustment of a phase sampling clock signal |
| 10/28/1997 | US5682367 Optical data storage and retrieval system and method |
| 10/28/1997 | US5682366 Optical disc recording apparatus with efficient data checking |
| 10/28/1997 | US5682360 Recording and reproducing apparatus for use with a recording medium having an optical recording layer and magnetic recording layer |
| 10/28/1997 | US5682280 Sliding-type magnetic head for magnetooptical recording |
| 10/28/1997 | US5681633 Magneto optical disc, apparatus for reproducing the same and method of reproducing the same |
| 10/23/1997 | WO1997039488A1 Geometrically enhanced magnetoresistance in trilayer tunnel junctions |
| 10/23/1997 | CA2251608A1 Geometrically enhanced magnetoresistance in trilayer tunnel junctions |
| 10/22/1997 | EP0802531A2 Information recording method and apparatus |
| 10/22/1997 | EP0553816B1 Disc shaped recording medium and address discrimination circuit for disc-shaped recording medium |
| 10/22/1997 | CN1162814A Optical pickup and optical recording medium reproducing apparatus |
| 10/21/1997 | US5680500 Record bearing medium for still video signal |
| 10/21/1997 | US5680386 Optical method and system for writing/reading information on a recording medium |
| 10/21/1997 | US5680382 Optical information recording apparatus and method capable of handling a plurality of card-like recording media of different reflectance |
| 10/21/1997 | US5680381 Recording medium, recording method, recording/reproducing apparatus, and cutting apparatus |
| 10/21/1997 | US5680380 Data readout system for optical disk having maximum likelihood data detecting circuit |
| 10/21/1997 | US5680373 Reproducing apparatus for magneto-optical recording device |
| 10/21/1997 | US5679947 Optical device having a light emitter and a photosensor on the same optical axis |
| 10/21/1997 | US5679474 Overwritable optomagnetic recording method and medium having a layer with curie temperature which varies in the thickness direction |
| 10/21/1997 | US5679455 Magneto-optic recording medium and apparatus |
| 10/16/1997 | WO1997038421A1 Optical recording medium |
| 10/16/1997 | WO1997038321A1 Optical recording measurement package |
| 10/14/1997 | USRE35630 Over write capable magnetooptical recording medium, recording method and apparatus using the same |
| 10/14/1997 | USRE35629 Layers of transparent dielectric films, rare earth-transition metal alloy films having controlled refractive indices and reflective films produce circular dichroism effect |