Patents
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)
02/1999
02/02/1999US5867466 Recording medium management method
02/02/1999US5867455 Optical method and device for irradiating domains at predetermined positions
02/02/1999US5867231 Method and apparatus for decoding video signal
01/1999
01/28/1999DE19732065A1 Informationsspeicherung auf einem Speichermedium Information storage on a storage medium
01/27/1999CN1206180A Optical disk unit and disk cartridge
01/26/1999US5864531 DC level fluctuation correction by selecting a time constant coupled to a reproduced signal
01/26/1999US5864527 Recording and reproducing apparatus for data storage and/or audio
01/26/1999US5864521 Information reproducing or recording apparatus provided with memory for storing data, and information reproducing or recording method using the same apparatus
01/26/1999US5864520 Magneto-optical recording medium for magnetically induced super resolution
01/26/1999US5863649 Magneto-optical recording medium
01/26/1999CA2040701C Information recording/reproducing apparatus
01/21/1999DE19831593A1 Magneto-optical recording medium
01/21/1999DE19831567A1 Digital audio recording apparatus for e.g. optical disc
01/20/1999CN1205517A Recording apparatus and recording method
01/20/1999CN1205506A Signal recording method, phase dieference detecting circuit, and information apparatus
01/19/1999US5862110 Apparatus for recording and/or reproducing information and/or from optical information record disk
01/19/1999US5862105 Information recording method capable of verifying recorded information simultaneously with recording, and magneto-optical recording medium used in the method
01/19/1999US5862103 Magneto-optical recording method capable of determining optimum laser beam intensities
01/13/1999EP0890169A1 Compositions comprising cystalline-like transition metal material and methods of use thereof
01/13/1999EP0596139B1 Optical disk recorder/reproducer
01/12/1999US5859862 Optical recording/reproducing apparatus having laser diode driver capable of a linear operation responsive to an input signal representative of a laser beam power varying depending on a magneto-optical disk-laser beam spot relative speed
01/12/1999US5859831 Disk cartridge
01/12/1999US5859825 Optical data storage and retrieval system and method
01/12/1999US5859819 Tracking and focus control system for optical disk apparatus
01/12/1999US5859817 Optical disk apparatus and track access control method for optical disk apparatus for reducing the relative position shift between two beam spots which are emitted through two objective lenses
01/12/1999US5859815 Apparatus and methods for minimizing non-recordable areas and numbers of parts per track on a digital recording medium
01/12/1999US5859813 Magneto-optical recording method and apparatus to be used in the method
01/12/1999US5858565 Plurality of layers on substrate forming stack including elements terbium, iron, lead or terbium, cobalt, lead or terbium, iron, bismuth or terbium, cobalt, bismuth
01/07/1999EP0889474A1 Error tolerant data recording
01/07/1999EP0889468A2 Recording condition control method, recording condition control device, and optical recording medium for optical recording apparatus
01/07/1999EP0889466A1 Optical recording medium with two superimposed layers, and corresponding recording device and method of reproduction
01/07/1999DE19800223A1 Optical disc recording and playback system
01/07/1999DE19753011A1 optical disc recording system with test procedure
01/07/1999DE19752602A1 High density information recording medium
01/06/1999CN1204116A Optical disc and optical disc device
01/05/1999US5856969 Optical disk which reduces cross erasure of data recorded on lands and grooves
01/05/1999US5856967 Atomic force microscopy data storage system with tracking servo from lateral force-sensing cantilever
01/05/1999US5856957 Magnetic field applying device
12/1998
12/30/1998WO1998059340A1 Slider for optical disc data storage system
12/30/1998EP0887794A1 Recording apparatus
12/30/1998EP0887790A2 Optical reproducing device and optical memory medium
12/30/1998CN1203415A Optical disc and optical disc drive
12/29/1998US5854778 Information recording and reproducing method and system for disc-shaped recording mediums
12/29/1998US5854775 Magneto-optic disk recording system having improved duty ratio controller
12/29/1998US5853872 Magneto-optical recording medium
12/23/1998EP0886275A1 Digital recording method, digital disk, digital disk recording device, and digital disk reproducing device
12/23/1998EP0886266A2 Optical disc and optical disc drive
12/23/1998CN1202693A Disc drive apparatus
12/22/1998US5852599 Optical recording medium and optical recording/reproducing device, and manufacturing method of optical recording medium
12/22/1998US5852596 Adjusting a detected signal with a wave form equalizer based upon environmental temperature or heat characteristic of an optical disk
12/22/1998US5852595 Device for initializing an optical disc
12/22/1998US5852591 Magneto-optical recording medium and head unit for a magneto-optical recording medium
12/22/1998US5851363 Multilayer film materials system
12/17/1998WO1998048409A3 Electro-magnetic coil assembly
12/16/1998EP0884721A1 Recorder
12/16/1998EP0884720A1 Optical reproduction method and optical information apparatus
12/16/1998CN1201975A Device for reading from and/or writing to optical recording media
12/15/1998US5850383 Magneto-optical recording medium with recordable lands and grooves
12/15/1998US5850381 Method of recording information on a disc by recording information at interleaved sectors
12/15/1998US5850380 Photomagnetic head apparatus
12/15/1998US5850377 Data readout system for optical disk having maximum likehood data detecting circuit
12/15/1998US5850375 System and method using optical fibers in a data storage and retrieval system
12/15/1998US5850374 Method and apparatus for data storage using thermal proximity imaging
12/09/1998EP0883117A1 Magneto-optical recording medium on which information is recorded by optical super-resolution method, and recording/reproducing apparatus for the same medium
12/09/1998EP0883114A2 Device for reading from and/or writing to optical recording media
12/09/1998CN1201227A Magnetic-optical storage medium and reproducing method
12/09/1998CN1201226A Magnetic-head apparatus
12/09/1998CN1201222A Recording medium for recording record/playback condition corresponding to recording density and record/playback method
12/08/1998US5848049 Disc player with parallel objective lenses
12/08/1998US5848048 Optical disc reproducing apparatus, signal processing apparatus and method of the same
12/08/1998US5848045 Method for recording and reading an optical disk
12/08/1998US5848040 Data reproducing apparatus and method
12/08/1998US5848037 Data recording medium and data recording apparatus for recording identification signal on the data recording medium
12/08/1998US5848032 Disk recording apparatus for generating search positional information indicative of marked points on a disk
12/08/1998US5848031 Apparatus for recording and/or reproducing a recording medium having automatic track numbering capability
12/08/1998US5846626 Optical recording medium and method of producing same
12/03/1998WO1998054726A1 Nanometric writing and erasure combined with supersensitive reading without erasure
12/03/1998WO1998054709A1 System and method for generating position error signals within a computer memory device
12/03/1998WO1998054707A1 Near field magneto-optical recording system employing slit illumination
12/03/1998WO1998036408A3 A magnetic structure urging an actuator assembly toward a home position
12/02/1998EP0881642A2 Method and apparatus for recording compressed audio data on recording medium and method for transferring compressed audio data
12/02/1998EP0881631A2 Optical disc and optical disc device
12/02/1998EP0546189B1 Opto-magnetic data recording system
12/01/1998US5844755 Giant magnetoresistive information recording medium, and associated recording and reproducing method and apparatus
12/01/1998US5843570 Magneto-optical recording medium having large kerr rotational angle in short wavelength range
11/1998
11/26/1998WO1998053455A2 System and method for cleaning head assemblies and data storage disks
11/25/1998EP0880133A1 Optical disk apparatus and accessing methods, and disk cartridges for housing optical disks
11/25/1998EP0879533A1 Video media security and tracking system
11/25/1998CN1200190A Magnetic head lifting device of magneto-optical recorder and/or reproducer
11/24/1998US5841757 Optical disk having a large storage capacity
11/24/1998US5841755 Magnetooptical information recording and reproducing apparatus which reproduces information by detecting only portions of light from a recording medium not shielded by a shielding device
11/24/1998US5841752 Disc drive unit
11/24/1998US5841750 Information playback apparatus
11/24/1998US5841747 For recording and reproducing a signal
11/24/1998US5841739 Accessing method and apparatus for use in hybrid optical recording device
11/24/1998US5841612 Sliding type magnetic head for magneto-optical recording
11/18/1998EP0878800A2 Disk device and disk device calibrating method
11/18/1998EP0878797A1 Information reproducing apparatus and reproducing method
11/18/1998EP0878793A2 Recording/reproducing apparatus and a magneto-optical recording medium for use therewith
11/18/1998CN1199225A Disk device and disk device calibrating method
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