| Patents for G11B 13 - Recording simultaneously or selectively by methods or means covered by different main groups; Record carriers therefor; Reproducing simultaneously or selectively therefrom (1,475) |
|---|
| 10/19/1999 | US5970039 Optical recording medium, method of recording information, method of reproducing information, apparatus for recording information, and apparatus for reproducing information |
| 10/19/1999 | CA2039700C Apparatus for reproducing recorded data and selectively either of read-only or recorded synchronization information from a magneto-optical recording medium |
| 10/05/1999 | US5963513 Methods for recording and reproducing information |
| 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 | US5959946 Device system and method for processing information from hybrid optical disks |
| 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 |
| 08/31/1999 | US5946284 Disk apparatus using ferroelectric thin film |
| 08/19/1999 | DE19848692A1 Information recording device with optical and magnetic recording heads for magneto optical disc unit |
| 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 | US5940314 Ultra-high density memory device |
| 08/10/1999 | US5936928 Multilayer media and use with flying head having solid immersion lens |
| 07/29/1999 | WO1999038160A1 Data medium optical recording/reading device |
| 07/28/1999 | CN1224214A Data storage device and control method therefor |
| 07/27/1999 | US5930210 System and apparatus for recovering information from a record carrier which exhibits variations of two different physical parameters thereof |
| 07/21/1999 | EP0930614A1 "Closed information system with physical copy protection" |
| 07/07/1999 | CN1221952A Magneto-optical recording or reproducing device |
| 06/23/1999 | EP0924695A2 Magneto-optical recording or reproducing device |
| 06/22/1999 | US5914926 Optical recording medium for checking compatibility of an optical pickup device and method of checking an optical pickup device using the same |
| 06/09/1999 | EP0921522A1 Information storage medium |
| 06/09/1999 | EP0782745B1 Method and apparatus for storing data using spin-polarized electrons |
| 05/20/1999 | WO1999024978A1 Magnetic recorder, magnetic recording/reproducing apparatus, and magnetic recording method |
| 05/18/1999 | US5905700 Multiple data layer optical disk with recorded information identifying the type of tracking |
| 05/06/1999 | EP0731970B1 Rom-ram-disk |
| 04/27/1999 | US5898607 Recording/reproducing method and recording/reproducing apparatus |
| 04/08/1999 | DE19843713A1 Thermomagnetic recording/playback head useful for hard disk drive |
| 03/30/1999 | US5889641 Magneto-resistive magneto-optical head |
| 03/11/1999 | WO1999012159A1 Optical medium for non-volatile data storage, adapter means for writing/reading said optical medium and process for manufacturing said optical support |
| 03/09/1999 | US5881038 Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| 03/09/1999 | US5880901 Method and apparatus for positioning a magnetoresistive head |
| 03/03/1999 | EP0899721A1 Magnetic recording method |
| 03/02/1999 | US5877910 Dual magnetic head and method for writing on very high track density and conventional track density floppy disks |
| 02/18/1999 | WO1999008262A1 Magnetic recorder/reproducer and magnetic recording/reproducing method |
| 01/06/1999 | CN1204116A Optical disc and optical disc device |
| 12/15/1998 | US5850374 Method and apparatus for data storage using thermal proximity imaging |
| 12/02/1998 | EP0881631A2 Optical disc and optical disc device |
| 11/24/1998 | US5841739 Accessing method and apparatus for use in hybrid optical recording device |
| 11/17/1998 | US5838020 Method and apparatus for storing data using spin-polarized electrons |
| 11/12/1998 | WO1998050917A1 Information storage medium |
| 11/05/1998 | WO1998049684A1 Disk cartridge with dual housing structure |
| 10/28/1998 | CN2296059Y ROM remote controlled recorder |
| 10/21/1998 | EP0871867A1 Method and apparatus for positioning a magnetoresistive head |
| 09/30/1998 | EP0867907A2 Electron emission device for generating and emitting spin-polarized electrons |
| 09/22/1998 | US5812519 ROM-RAM Disk |
| 09/22/1998 | US5810477 System for identifying surface conditions of a moving medium |
| 09/15/1998 | US5808977 Tracking method and recording means thereby |
| 09/15/1998 | US5807640 Optical recording medium, reproducing system, method of reproducing optical disk, method of fabricating optical disk original record, and method of stopping illegal program operation |
| 09/08/1998 | US5805551 Method and apparatus for preventing illegal copy or illegal installation of information of optical recording medium |
| 08/20/1998 | WO1998036409A1 Magnetic recording method |
| 08/19/1998 | CN1190776A Magnetic disk group with laser convex mark |
| 08/18/1998 | US5796102 Measuring device for measuring the intensity and/or polarization of electromagnetic radiation, for determining physical properties of a preparation, and for reading information from a storage medium |
| 08/12/1998 | EP0655960B1 Pneumatic hub locking device for etching optical servo tracks on magnetic disks |
| 08/12/1998 | EP0645043B1 Apparatus for and method of verifying etching of optical servo information on magnetic media |
| 08/04/1998 | US5790499 Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying |
| 06/30/1998 | US5774313 Magnetic disk which reduces deterioration in regenerated signals due to optical servo grooves |
| 06/02/1998 | US5761301 Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk |
| 05/27/1998 | EP0844612A2 Apparatus for reproducing information from an optical disc |
| 05/27/1998 | EP0844611A2 Optical disk |
| 04/28/1998 | US5745473 Multiple data layer optical disk with recorded information identifying the type of tracking |
| 04/28/1998 | US5744792 Hybrid information recording medium |
| 04/14/1998 | US5739972 Storage device |
| 04/07/1998 | US5737286 System and apparatus for recovering information from a record currier which exhibits variations of two different physical parameters thereof |
| 04/01/1998 | EP0833319A2 Disc-shaped recording medium |
| 04/01/1998 | CN1177802A Mn-Bi-Al magneto-optic material with high recording density and preparation method therefor |
| 03/25/1998 | EP0831491A1 Optical disk memory content display apparatus, system and display control method |
| 03/10/1998 | US5726970 Multi-layer optical recording medium |
| 03/04/1998 | EP0827143A2 Magneto-optical recording/reproducing device |
| 03/03/1998 | US5724327 Record carrier having first variations of a first physical parameter corresponding to information recorded thereon and second variations of a second physical parameter relating to recovery of the information |
| 03/03/1998 | US5723978 Photo-inducible magnetic exchange coupling device |
| 02/18/1998 | CN1173942A Optical disk, optical reocorder, optical reproducing device, encrypted communication system, and authorzing system for use of program |
| 02/11/1998 | CN1173014A Optical recording medium for checking compatibility of optical pickup device and method of checking optical pickup device using the same |
| 02/03/1998 | US5715232 Recording and reproduction of items of information using ROM-RAM storage media |
| 01/07/1998 | EP0817181A2 Hybrid optical disk recording medium, disk drive device, information processing system and method of processing information |
| 01/07/1998 | CN1036952C Record replaying apparatus |
| 12/30/1997 | US5703845 Reading device with cross-talk correction of two signal trains |
| 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 |
| 12/16/1997 | US5699331 Apparatus operating with recording medium according to positional information of a secret code |
| 11/26/1997 | CN1166223A Optical disk, optical recorder, optical producing device, encrypted communication system, and authorizing system for use of program |
| 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 |
| 11/19/1997 | EP0807929A1 Optical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk production |
| 11/11/1997 | US5687143 Reproducing apparatus having an optical head system |
| 10/28/1997 | US5682360 Recording and reproducing apparatus for use with a recording medium having an optical recording layer and magnetic recording layer |
| 10/22/1997 | EP0802527A1 Optical disk, optical recorder, optical reproducing device, encrypted communication system, and authorizing system for use of program |
| 10/21/1997 | US5680500 Record bearing medium for still video signal |
| 10/08/1997 | EP0542910B1 Thermomagnetic recording system having high storage density and direct-overwrite capability |
| 10/07/1997 | US5674583 Optical recording medium and manufacturing method thereof |
| 09/12/1997 | WO1997033280A1 Recording/reproduction apparatus |
| 09/09/1997 | US5666334 Storage device capable of using both optical and magnetic disk units for storing information data |
| 09/03/1997 | EP0587905B1 Data recording medium and data recording apparatus |
| 08/12/1997 | US5656385 Magnetic recording medium and information recording-reproduction method using the same |
| 08/05/1997 | US5654950 Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying |
| 07/30/1997 | EP0542730B1 Optical disc and disc drive apparatus for writing/reading data into/from the disc |
| 07/10/1997 | WO1997024608A1 Method and apparatus for positioning a magnetoresistive head |
| 07/09/1997 | EP0782745A1 Method and apparatus for storing data using spin-polarized electrons |
| 07/02/1997 | EP0782133A1 Reproducing apparatus |
| 06/24/1997 | CA2043995C Magneto-optical recording/reproducing device |
| 05/20/1997 | US5631891 Disk reproducing circuit with automatic gain control |
| 05/14/1997 | EP0773542A2 Multiple data surface optical medium and data storage system |
| 05/14/1997 | EP0773541A2 Multiple data surface optical medium and data storage system |
| 05/07/1997 | EP0715714B1 A measuring device for measuring the intensity and/or polarization of electromagnetic radiation, for determining physical properties of a preparation, and for reading information from a storage medium |