| 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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| 02/10/1998 | US5717683 Optical disk and optical disk drive device |
| 02/10/1998 | US5717677 Data erasure device and data recording device using a clock signal |
| 02/10/1998 | US5717675 Optical head |
| 02/10/1998 | US5717671 Apparatus and method for recording constant interval of silence |
| 02/10/1998 | US5717667 Optical pickup apparatus including an optical rotation device |
| 02/10/1998 | US5717662 Super-resolution magneto-optical recording medium using magnetostatic coupling and information reproduction method using the medium |
| 02/10/1998 | US5717626 Photoelectric sensor, information recording system, and information recording and reproducing method |
| 02/10/1998 | US5717215 Electronic device for reading information stored in a substance |
| 02/10/1998 | US5716674 Selective ring opening by heat or light of pendant dicyclopentadiene groups anchored to substrate to form cyclopentadiene rings |
| 02/04/1998 | EP0822547A2 Magneto-optical recording medium and a reproducing method using such a medium |
| 02/03/1998 | US5715424 Apparatus and method for writing data onto rewritable optical media |
| 02/03/1998 | US5715232 Recording and reproduction of items of information using ROM-RAM storage media |
| 02/03/1998 | US5715226 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same |
| 02/03/1998 | US5715224 Recording medium with synthesis method default value and reproducing device |
| 02/03/1998 | US5715222 Playback clock generating circuit |
| 02/03/1998 | US5715220 Disc recording and/or reproducing apparatus wherein recording starting and ending dates and times are generated and recorded during a program recording mode, and starting and ending dates and times are displayed during a reproducing mode |
| 02/03/1998 | US5714251 High density recording, oxidation resistance, stabilization of coercive force |
| 01/28/1998 | EP0821354A2 Magneto-optical recording medium and method of reproducing information from the same |
| 01/27/1998 | US5712843 Miniature optical access head apparatus |
| 01/27/1998 | US5712840 Optical information recording/reproduciing apparatus having two-division detectors |
| 01/27/1998 | US5712837 Method and apparatus for recording data |
| 01/27/1998 | US5712836 Apparatus and method for adjusting a rotational velocity of a disk storage medium with measuring the amount of time to reproduce address data stored thereon |
| 01/27/1998 | US5712833 Durable magneto-optical disk having a rare earth-transition amorphous magneto-optical layer |
| 01/22/1998 | WO1998002882A1 Magnetic head lifting device of magneto-optical recorder and/or reproducer |
| 01/22/1998 | WO1998002878A1 Magneto-optical recording medium, its reproducing method and reproducer |
| 01/22/1998 | WO1998002877A1 Magneto-optical recording medium, its reproducing method and reproducer |
| 01/22/1998 | WO1998002876A1 Magneto-optical recording medium and magneto-optical recorder using the medium |
| 01/21/1998 | EP0820055A1 Optical head for optical disk drive |
| 01/21/1998 | EP0544299B1 Data recording/reproducing apparatus capable of simultaneously performing both reproducing and recording from and in a single recording medium |
| 01/20/1998 | US5710747 Dual coil, translational bias-field device for a magneto-optical system |
| 01/20/1998 | US5710746 Magneto-optical recording medium and reading method with magnetic layers of different coercivity |
| 01/20/1998 | US5710745 For use in a magnetomotive generator |
| 01/20/1998 | US5710384 Mechanical strength |
| 01/20/1998 | US5709978 Supperresolution readout thin film and information recording medium |
| 01/14/1998 | EP0818783A2 Magneto optical recording medium and method |
| 01/14/1998 | EP0818778A2 Sectored arrangement of wobble sections on an optical disk |
| 01/14/1998 | EP0818774A1 A tape stepper for transverse track positioning in a multitrack tape recorder |
| 01/14/1998 | EP0818712A2 Electrostatic information-recording media and process for recording and reproducing electrostatic information |
| 01/14/1998 | EP0818041A1 Spare and calibration sector management for optical worm media |
| 01/14/1998 | CN1170196A Photomagnetic recording medium and film |
| 01/13/1998 | US5708649 Optical disk capable of storing information data at difference clock rates |
| 01/13/1998 | US5708645 Semiconductor laser device to detect a divided reflected light beam |
| 01/13/1998 | US5708644 Optical head for optical disk drive |
| 01/13/1998 | US5708639 Magneto-optical disk recording device capable of verifying recorded state during recording and checking erased state during erasing |
| 01/13/1998 | US5708633 Method and apparatus for manufacturing information storage devices |
| 01/13/1998 | US5708632 Methods and apparatus for controlling access to a recording disk |
| 01/13/1998 | US5708631 System for fast reproducing of information recorded on an optical disc |
| 01/13/1998 | US5708472 Optical image recording and reading apparatus |
| 01/13/1998 | US5707728 Magneto-optical recording medium |
| 01/13/1998 | US5707727 Magneto-optical recording medium |
| 01/08/1998 | WO1998000838A1 Multitrack tape device using a movable magnetic head with a planar surface and comprising tape supporting means |
| 01/07/1998 | EP0817193A2 Calibration apparatus for information storage system |
| 01/07/1998 | EP0817190A2 Method and apparatus for retrieving data from a storage medium |
| 01/07/1998 | EP0817189A2 Method for retrieving data from a storage device |
| 01/07/1998 | EP0817188A2 Apparatus for retrieving data from a storage device |
| 01/07/1998 | EP0817187A2 Apparatus and method for retrieving stored data |
| 01/07/1998 | EP0817186A2 Method for retrieving data from a storage device |
| 01/07/1998 | EP0817183A2 Method and apparatus for controlling bias levels in a magneto-optical recording device |
| 01/07/1998 | EP0817182A1 Magnetooptical recording medium |
| 01/07/1998 | EP0817180A2 Optical data storage and retrieval system and method |
| 01/07/1998 | EP0817179A2 Optical data storage and retrieval system and method |
| 01/07/1998 | CN1036952C Record replaying apparatus |
| 01/06/1998 | US5706267 Method and apparatus for retrieving data from a storage device |
| 01/06/1998 | US5706263 Method and apparatus for high-density reproduction |
| 01/06/1998 | US5706260 Apparatus for recording and reproducing signals in data blocks |
| 01/06/1998 | US5706259 Magneto-optical recording medium for magnetically induced super resolution |
| 01/06/1998 | US5705286 Does not require initialization magnetic field in reproducing information, improved resolution and density |
| 12/30/1997 | US5703865 Method and apparatus for magneto-optical recording and reading using optimized laser powers |
| 12/30/1997 | US5703863 Optical device which detects reflected light with a push-pull method without dividing the reflected light |
| 12/30/1997 | US5703861 Integrated confocal optical pick-up head with a hologram and a polarizer mounted on each side of a transparent heat sink |
| 12/30/1997 | US5703857 For use with a disk drive |
| 12/30/1997 | US5703855 Optical disk apparatus and recording and reading method for an optical disk using the same |
| 12/30/1997 | US5703854 Disc recording/reproduction apparatus and method for resetting an address control circuit to maximize an address margin of the memory |
| 12/30/1997 | US5703853 Recording medium as well as recording apparatus and reproduction apparatus for the same |
| 12/30/1997 | US5703851 Clock reproducing device utilizing a frequency of wobble groove information |
| 12/30/1997 | US5703846 Optical disk tracking control method, optical disk device, and optical disk with increased recording density |
| 12/30/1997 | US5703841 Optical information recording/reproducing apparatus and method with function of adjusting reproducing power |
| 12/30/1997 | US5703840 Magnetic head and magneto-optical recording device |
| 12/30/1997 | US5703839 Magnetic head for magnetooptical recording apparatus |
| 12/30/1997 | US5702830 Magneto-optical recording materials system |
| 12/30/1997 | US5702793 Magneto-optical recording medium, disk and method of manufacturing the same |
| 12/30/1997 | CA2100898C Magneto-optical recording medium and method of recording and reproducingusing thereof |
| 12/30/1997 | CA2047208C Erasable optical wallet-size data card |
| 12/29/1997 | EP0814471A2 Optical data storage and retrieval system and method |
| 12/29/1997 | EP0814469A1 Optical recording medium for checking compatibility of an optical pickup device and method of checking an optical pickup device using the same |
| 12/29/1997 | EP0814468A1 Laminated proximity field optical head and optical information recording and reproducing device |
| 12/24/1997 | CN1168527A Audio and/or video data recording and reproducing apparatus and method of same |
| 12/23/1997 | US5701290 Carriage locking mechanism for an optical disk drive including a yoke member having a notch formed thereon |
| 12/23/1997 | US5701287 For recording and/or reproducing information signals |
| 12/23/1997 | US5701280 Optical information recording and/or reproducing apparatus in which a reproducing light beam is modulated with at least a 100% degree of modulation |
| 12/23/1997 | US5701279 Optical information recording-reproducing apparatus including a light beam detector being divided by a division line extending in a direction perpendicular to an information track |
| 12/23/1997 | US5700567 Magneto-optical recording medium |
| 12/23/1997 | US5700565 Magneto-optical layer, metallic layer and electron transitionlayer |
| 12/23/1997 | US5700540 Grooved substrate having thin surface smoothing layer of non-polymeric amorphous mixture of specified low molecular weight compounds, recording layer; improved noise level, performance |
| 12/18/1997 | WO1997048094A1 Magneto-optical recording medium |
| 12/16/1997 | US5699343 For reading out data recorded on a medium |
| 12/16/1997 | US5699342 Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser |
| 12/16/1997 | US5699336 Reproducing apparatus having buffer memory and capable of rapidly restarting reproduction and method of controlling the apparatus |
| 12/16/1997 | US5699331 Apparatus operating with recording medium according to positional information of a secret code |
| 12/16/1997 | US5699330 Magnetooptical disc apparatus having single micro-processor for controlling input/output processing of information by causing an interruption in the processing |