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)
08/1995
08/15/1995US5442618 Common mode rejection control in an optical disk drive
08/15/1995US5442608 Disk apparatus having a power consumption reducing mechanism
08/15/1995US5442597 Apparatus for writing and reading a magneto-optical record carrier
08/15/1995US5442596 Recording/reproducing apparatus having a magnetic head which is opened and closed together with a door
08/15/1995US5441804 Magneto-optical recording medium and method for production thereof
08/10/1995DE19503165A1 Optical record-playback system with scanning read-write heads
08/10/1995DE19502474A1 Laminate magneto=optical recording medium
08/09/1995EP0666566A1 Recording and/or reproduction apparatus
08/09/1995EP0666565A2 Card drive apparatus and card
08/08/1995US5440533 Optical head unit having disk-shaped rotor with generally planar and common mounting surface for optical elements
08/08/1995US5440531 Magneto-optical reproducing method
08/08/1995US5440530 Integrated magneto-optical having a magnetic head set back from an optical head
08/08/1995US5440529 Audio and general digital data recording and/or reproducing apparatus having two interface circuits
08/08/1995US5439777 Recording and reproducing apparatus and method for applying a pulse voltage and an electromagnetic wave
08/08/1995US5439768 Electrostatic information recording medium and electrostatic information recording and reproducing method
08/08/1995US5439752 Gold and aluminum multilayers; corrosion and oxidation resistance
08/08/1995US5439500 Magneto-optical alloy sputter targets
08/03/1995WO1995020814A1 Ultra thin film magnetic recording medium and related method and apparatus for recording and reproducing using spin-polarized electrons
08/02/1995EP0665541A2 Information recording and reproducing device
08/01/1995US5438562 Optical head for recording and/or reproducing information on and/or from opto-magnetic record medium
08/01/1995CA2025924C Detecting magnetooptic and intensity-modulated optical signals with the same detector
07/1995
07/26/1995EP0664604A2 Transimpedance amplifier
07/26/1995EP0613579A4 Small size constant torque voice coil motor.
07/25/1995US5436884 Optical data reading apparatus and an optical data reading method
07/25/1995US5436876 Optical head and optical memory device
07/25/1995US5436875 Recording/reproducing apparatus having buffer memory for preventing discontinuity in recording/reproducing operations and method for same
07/25/1995US5436770 Disc recording and/or reproducing apparatus having an enlarged locking range for correctly phased internal channel clocks
07/25/1995US5436448 Surface observing apparatus and method
07/25/1995US5436072 Comprising a seed layer of amorphous zinc tin oxide to improve coercivity and squareness; compact disk
07/19/1995EP0583416A4 Optical data storage and retrieval system and method.
07/18/1995US5434844 Magneto-optical recording media and magneto-optical recording device using the same
07/18/1995US5434842 Reading and writing stored information by means of electrochemistry
07/18/1995US5434841 Plural-beam optical head
07/18/1995US5434831 Magneto-optical recording apparatus capable of both magnetic modulation and light modulation recording
07/18/1995US5434708 Optical reproducing apparatus ultilizing a polarization beam splitter
07/12/1995EP0662684A1 Optical disk apparatus
07/11/1995US5432774 Optical recording medium
07/11/1995US5432768 Method and device for data management in optical recording medium
07/11/1995US5432763 Subminiature rotary actuator optical head
07/11/1995US5432761 Method and apparatus for magneto-optical recording of a plurality of discrete levels
07/11/1995US5432760 Method of measuring phase difference of opto-magnetic record medium and apparatus for carrying out said method
07/06/1995WO1995018443A1 Optical recording medium, reproduction apparatus of optical disk, reproduction method of optical disk, production method of original disk of optical disk, and illegal program operation stop method
07/06/1995DE4446331A1 Magneto=optical disc recording and playback system
07/05/1995EP0661700A1 Use of a quasi-amorphous or amorphous zirconia dielectric layer for optical or magneto-optic data storage media
07/04/1995US5430706 Magneto-optical disk having lands and grooves for recording information
07/04/1995US5430705 Method and apparatus for recording and reproducing main and sub information
07/04/1995US5430696 Magneto-optical recording medium
07/04/1995US5430695 Magneto-optical disk having a magnetic film with two layers and a playback method thereof
07/04/1995CA2007505C Method for recording and reproducing information and device for the same
06/1995
06/29/1995WO1995017750A1 Method of masking data on a storage medium
06/29/1995WO1995017747A1 Optical method and system for reading/writing data on a recording medium
06/29/1995CA2175556A1 Method of masking data on a storage medium
06/28/1995EP0660317A2 Magneto-optical recording-reproducing system
06/28/1995EP0660316A2 Magneto-optical recording medium and method for the preparation thereof
06/28/1995EP0599901B1 Optical scanning device
06/27/1995US5428596 Optical pickup apparatus
06/27/1995US5428594 Magneto-optic recording method and apparatus utilizing a two-state modulated light beam
06/27/1995US5428591 Track compensation apparatus of magnetooptical disk apparatus
06/27/1995US5428586 Magneto-optical recording method using a magneto-optical recording medium having two or more magnetic layers to allow recording and reproduction to be effected simultaneously and magneto-optical recording medium used in the method
06/27/1995US5428585 Magneto-optical recording medium comprising first, second and third magnetic layers and method of recording on same
06/27/1995US5428584 Pickup device for a magneto-optical information recording system
06/27/1995US5428583 Magneto-optical disc recording/reproducing apparatus
06/27/1995US5427833 Magneto-optical recording medium and method for processing the surface
06/22/1995WO1995008181A3 A system for analyzing surfaces of samples
06/22/1995DE4445430A1 Magneto-optical disc cassette
06/21/1995EP0658892A1 Composite material for magnetooptical recording, its production and its use
06/21/1995EP0658891A2 Magneto-optical recording medium and method of reproducing magneto-optical information using thereof
06/21/1995EP0658890A2 Magnetooptical recording medium with overwrite capabilities and method for using the same
06/21/1995EP0658889A1 Information recording and reproducing apparatus having processor and information recording and reproducing method
06/21/1995EP0658886A1 Optical recording medium and recording/reproducing method therefor
06/21/1995EP0658884A1 Optical recording/reproduction apparatus
06/21/1995EP0658883A1 Optical scanning device, and recording and/or read apparatus comprising such a scanning device
06/21/1995EP0658882A1 Disk device
06/20/1995US5426629 Recording and/or reproducing method for an optical disc
06/20/1995US5426626 Photodetecting system for a magneto-optical disk head system
06/20/1995US5426624 Optical disk apparatus for linking fragmented regions in a user table of contents
06/20/1995US5426539 Multiple gap read/write head for data storage devices
06/14/1995EP0657883A2 Information reproducing apparatus and method
06/14/1995EP0657880A2 Magneto-optical recording medium and manufacturing method thereof
06/14/1995EP0657879A2 Magnetooptic disk player
06/14/1995EP0657878A2 Magneto-optical recording and reading-out method
06/14/1995EP0448671B1 Method and device for writing and reading information from a support based on ferroelectric material
06/13/1995US5425009 Magneto-optical recording apparatus for a high-speed magnetic field inversion
06/13/1995US5425008 Magneto-optical memory device whereon overwriting operation can be carried out through light intensity modulation and method for recording and erasing using it
06/13/1995US5424974 Optoelectric memories with photoconductive thin films
06/09/1995CA2137062A1 Magneto-optical recording and reading-out method
06/08/1995WO1995015557A1 Rom-ram-disk
06/08/1995WO1995015555A1 Disk medium having a designed topography
06/08/1995WO1995015553A1 Method of writing data onto and reading data from a magnetic carrier and a head unit for carrying this out
06/08/1995WO1995015407A1 Magneto-optical alloy sputter targets
06/08/1995CA2155003A1 Method of writing data onto and reading data from a magnetic carrier and a head unit for carrying this out
06/07/1995EP0656626A2 Information recording-reproduction method
06/07/1995EP0656625A1 Optical disk and method for reproducing information recorded on the same
06/07/1995EP0645043A4 Apparatus for and method of verifying etching of optical servo information on magnetic media.
06/06/1995US5422874 Optical recording disk, and recording/reading apparatus using same
06/06/1995US5422866 Magneto-optical head with birefringent polarizer
06/06/1995US5422865 Light modulation method for magneto-optical recording device
05/1995
05/31/1995EP0655740A1 Recording medium management method
05/31/1995CN1103168A Light modulator and optical head adjustment method
05/30/1995US5420838 Disk recording and reproducing device