Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › 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
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)
10/1995
10/31/1995US5462811 Magneto-optical recording media and mangeto-optical device using the media
10/31/1995CA2029951C Magneto-optic recording medium and apparatus
10/26/1995WO1995028704A1 Method and apparatus for preventing illegal copying and illegal installation of information on optical recording medium
10/25/1995CN1110812A Recording apparatus
10/24/1995US5461605 Information recording/reproducing method, recording carrier and apparatus for recording and/or reproducing information on information recording carrier by use of probe electrode
10/24/1995US5461600 High-density optical data storage unit and method for writing and reading information
10/24/1995US5461595 Double-layer magneto-optical recording method without using an initial magnetic field
10/24/1995US5461224 Optical pick-up device having light splitting means and focus error and tracking error detection
10/24/1995CA2025884C Optical memory device
10/17/1995US5459711 Optical recording element and driving system
10/17/1995US5459710 Apparatus for recording information in data sections having number of bytes which increases with increase in circumference of tracks on medium
10/17/1995US5459707 Read/write CD ROM system using an electro-optic modulator to crosstalk
10/17/1995US5459701 Magneto-optical recording method
10/17/1995US5458987 Multilayered magnetooptical recording medium
10/17/1995US5458940 Optical disk with vibration dampening
10/12/1995DE19513273A1 Opto-magnetische Kopfanordnung Opto-magnetic head assembly
10/11/1995EP0676752A2 Electrostatic information recording medium and electrostatic information recording and reproducing method
10/11/1995EP0676749A2 Information reproducing device and method
10/11/1995EP0676745A1 Magnetic head and magnetic head device
10/10/1995US5457674 Optical disc recording apparatus
10/10/1995US5457672 Audio reproducing apparatus having a playback resume function after a halt request
10/10/1995US5457666 Light modulation method for forming a mark in magneto-optical recording system
10/10/1995US5457582 Magneto-optical storage medium wherein heating a portion of a read layer changes the portion's magnetic orientation
10/05/1995WO1995026548A1 High density information recording and reproducing method
10/04/1995EP0675346A1 Temperature detecting circuit generating an output signal according to the temperature
10/03/1995US5455818 Optical recording medium
10/03/1995US5455815 Pattern data generator
10/03/1995US5455809 Disk apparatus having magnetic head for magneto-optical recording device
10/03/1995US5455712 Optical element and method of fabricating the same
10/03/1995CA2017284C Optical recording medium
09/1995
09/28/1995DE4409851A1 Inscribing and reading information in information storage layer
09/28/1995DE4409850A1 Information storage unit, useful for molecular, reversible storage
09/27/1995EP0674311A2 Circuit for discriminating pre-mastered pits and pre-mastered grooves on optical disk
09/27/1995EP0674310A1 Magneto-optical recording medium and method of producing the same
09/27/1995EP0674309A1 Optical disk
09/27/1995CN1109199A Recording apparatus having a function to prevent recording of a signal into a specific area of a recording medium
09/26/1995US5453974 Optical disk substrate, method for initialization thereof and driving apparatus for initialization of said optical disk
09/26/1995US5453966 Disk player mat computes and indicates a computable time of a disk according to subcode information recorded on the disk
09/26/1995US5453963 Magneto-optical head system for detection of error and information signals by diffraction lights
09/26/1995US5453884 Magneto-optical recording medium
09/26/1995US5453607 Photodetector for recording/reproducing apparatus for both read only and magneto-optical disk shaped recording medium
09/26/1995CA2046705C Controls for optical disk relating to accessing and utilization of such disk
09/26/1995CA2046704C Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure
09/20/1995EP0673030A1 Optical disk recording device
09/20/1995EP0673026A2 Information recording method, and magneto-optical recording medium used in the method
09/20/1995EP0673025A1 Magneto-optical recording medium and method of using same
09/19/1995US5452273 Optical recording method and apparatus therefor
09/19/1995US5452272 Magneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portions
09/19/1995US5452271 Magneto-optical disc recording and/or reproducing apparatus with simplified means for moving the magnetic head close to and away from the magneto-optical disc during loading and unloading of the magneto-optical disc cartridge
09/14/1995DE19507228A1 Magnetooptical recording medium for laser recording system
09/13/1995EP0671734A1 Optical device
09/12/1995US5450387 Optical pickup apparatus for phase changing optical disk
09/12/1995US5450384 Method of accessing tracks on an optical disk surface
09/12/1995US5450382 Magneto-optical recording medium having a layer that retains its state of magnetization regardless of the presence of an external magnetic field, and a recording/reproducing method therefor
09/12/1995US5450381 Magneto-optical recording utilizing signal phase adjustment
09/12/1995US5450377 Magnetooptical recording and reproducing apparatus having an automatic hand lifting device
09/12/1995US5450376 Optical information recording/reproduction apparatus with super-resolution optical filter
09/12/1995US5449590 Multilayer
09/12/1995US5449566 Overwritable, high-density magneto-optical recording medium and recording/reproduction method therefor
09/12/1995CA2051603C Magneto-optical recording medium
09/12/1995CA2001147C Magnetooptical recording media
09/07/1995DE19506374A1 Magneto-optical recording medium
09/06/1995EP0482026B1 Recording and/or reproducing appratus with a cooling body for an element to be cooled
09/05/1995US5448552 Super resolution information reproduction by tracking address information in normal resolution
09/05/1995US5448543 Apparatus for reproducing data from a regenerative signal using a PLH circuit having loop gain control
09/05/1995US5448538 Electromagnet coils having a different inductance during magneto-optical recording and reproducing
09/05/1995US5448537 Magnet-optical disc drive device with sure disc placement
09/05/1995US5448536 Magneto-optical recording device having an optical head capable of generating a circularly polarized light beam
09/05/1995US5448535 Head position control device
09/05/1995US5448422 Magnetic head drive circuit including capacitors for storing charge to drive a magnetic head coil
09/05/1995US5448407 Equivalent wollaston prism for an optical pick-up head and an optical pick-up head using of the same
09/05/1995US5447801 Target for magneto-optical recording media and method for producing same
09/05/1995US5447778 Information recording medium and methods of manufacturing and using the same
09/05/1995US5447768 Optical disk with a bearing ring
09/05/1995CA1336922C Recording device and reproducing device
08/1995
08/31/1995DE19506334A1 Magnetic arrangement with photo-induction
08/30/1995EP0669613A1 Optical pickup system
08/30/1995EP0669612A2 Optical recording apparatus
08/29/1995US5446723 Multiple data surface optical data storage system
08/29/1995US5446718 Information recording and reproducing method and system for disc-shaped recording mediums
08/29/1995US5446711 Apparatus for recording and/or reproducing information and/or from optical information record disk
08/29/1995US5446687 Data storage medium for storing data as a polarization of a data magnetic field and method and apparatus using spin-polarized electrons for storing the data onto the data storage medium and reading the stored data therefrom
08/29/1995US5446684 Storage medium, storage method and stored information reading method
08/29/1995US5446604 Apparatus for detecting addresses recorded on each sector of a disk by detecting a first address mark and then in the absence of a second address mark, generating a pseudo address mark a predetermined time after detecting the first address mark
08/29/1995US5445853 Low reflectivity, compactness, lightweight
08/29/1995CA2026740C Sensing previously-recorded information while recording or erasing a magnetooptic storage number
08/29/1995CA2017501C Recording/reproducing device
08/23/1995EP0668586A2 Magneto-optical recording medium, and information reproducing method using the medium
08/23/1995EP0668585A2 Magneto-optical recording medium, and information recording/reproduction method using the medium
08/23/1995EP0531354B1 Process for the measurement of the thickness and refractive index of a thin film on a substrate, and a device for carrying out the process
08/22/1995US5444688 Information reproducing circuit
08/22/1995US5444687 Method and device for accessing an optical disc
08/22/1995US5444684 Seek control system of dual processor magneto-optic disk unit
08/22/1995US5444683 Optical reporting reproducing device having fixed and movable optical systems
08/22/1995US5444679 Optical disk driver for reading data from a disk based on ID information
08/22/1995US5444678 Magneto-optic recording magnetic head having magnetic gap which has different sizes in magnetic field modulation mode and light modulation recording mode
08/22/1995US5444677 Optical read/write head low angle beamsplitter and coplanar detectors
08/22/1995US5444224 Optical information recording/reproducing apparatus
08/22/1995CA2023869C Optical disk recording/reproducing device
08/17/1995WO1995022142A1 Method and recording device for recording signals on a record carrier
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