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)
11/1998
11/17/1998US5838666 Recording medium management method where recording is carried out by data recording units in accordance with management tables
11/17/1998US5838656 Optical disk system having an objective lens with a numerical aperture related to the thickness of the protective layer
11/17/1998US5838654 Optical recording medium having a specified range of pit widths and pit depths
11/17/1998US5838649 Apparatus for demodulating digital FM signal in an optical disc device
11/17/1998US5838646 Optical disk having a protective layer of specified thickness relative to the numerical aperture of the objective lens
11/17/1998US5838645 Magneto-optical recording medium having a plurality of magnetic layers
11/17/1998US5838444 Magneto-optic characteristic measuring apparatus
11/17/1998US5838020 Method and apparatus for storing data using spin-polarized electrons
11/17/1998US5837424 Optical storage medium and process
11/17/1998US5837386 Platinum/cobalt multilayer film and loops
11/17/1998CA2142767C Magneto-optical recording medium, and information reproducing method using the medium
11/12/1998WO1998050911A2 Information processing with a plurality of optical discs
11/12/1998WO1998050813A1 Two-dimensional optical positioning system
11/11/1998CN1198569A Laser gating type magnetic-optic recording device
11/10/1998US5835472 Optical pickup device with substantially mutually orthogonal reflection surfaces
11/10/1998US5835469 High-density information recording/reproducing method
11/10/1998US5835465 File manager in an execution program of a host computer
11/10/1998US5835314 Tunnel junction device for storage and switching of signals
11/10/1998US5835105 Method of optically turning a magneto-optic medium having in order a substrate two dielectric layers, and a thick magneto-optic recording layer, and medium turner by that method
11/10/1998CA2128964C Magnetooptical recording medium and recording/reproduction method for medium
11/05/1998WO1998049684A1 Disk cartridge with dual housing structure
11/05/1998WO1998049675A1 Electro-optical storage system with flying head for near-field recording and reading
11/04/1998EP0875894A2 Reproducing recording media
11/04/1998EP0875892A1 Recording and/or reproducing apparatus for recording medium
11/03/1998US5831964 Recording medium having first tracks and second tracks at different levels and with different recording formats
11/03/1998US5831951 Method and apparatus for controlling a slice signal in the reproduction information recorded in an optical disk
11/03/1998US5831944 Magnetooptical recording medium and method for reproducing information from a magnetooptical recording medium having three layers
11/03/1998US5831943 Stabilized overwriteable optical recording method using laser beam intensity settings
11/03/1998US5831942 Optical information recording/reproducing apparatus
11/03/1998US5831797 Slider with mesa for optical disc data storage system
11/03/1998US5830589 Rare earth-transition metal amorphous alloy
11/03/1998CA2159233C Method, apparatus and medium for magneto-optical recording
10/1998
10/29/1998WO1998048418A1 Thin-film electro-magnetic coil design for use in a flying magneto-optical head
10/29/1998WO1998048409A2 Electro-magnetic coil assembly
10/28/1998EP0783749B1 Magneto-optic recording medium having magneto-optic film layers separated by yttrium oxide
10/28/1998CN1197530A 光盘装置 Optical disc device
10/27/1998US5829050 Memory control device and memory data search circuit
10/27/1998US5828649 Magneto-optical memory element
10/27/1998US5828644 Microactuator for fine focusing a slider-mounted lens of an optical disc drive
10/27/1998US5828630 Diffraction-based direct read during write using magneto-optic recording media
10/27/1998US5828512 Information processing apparatus having a floating-type head
10/27/1998US5828054 Focusing method and system for focus capture and focus control in optical disc system including detection of Quad Sum signal to close focus
10/22/1998WO1998047138A1 Optical recording device and optical recording medium
10/21/1998EP0545945B1 Process for shortening the access time
10/20/1998US5825742 Information recording method of optical recording medium
10/20/1998US5825739 Recording method and apparatus for recording medium
10/20/1998US5825736 Optical disk apparatus
10/20/1998US5825734 Recording medium management method
10/20/1998US5825733 Optical disc recording apparatus for recording data at a disc rotational speed selected from a range of disc rotational speeds
10/20/1998US5825729 Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods
10/20/1998US5825728 Optical disk and optical disk drive device
10/20/1998US5825724 Magneto-optical recording method using laser beam intensity setting based on playback signal
10/20/1998US5825723 Magneto-optical recording medium having a reproducing layer with different magnetization directions in different temperature ranges
10/20/1998US5825592 Magnetic head with bobbin attached to a slidable contact body
10/20/1998US5825022 Polarizer, including thin polarizing film, optical element with polarizer, optical head with polarizer and methods and apparatus for forming same
10/20/1998US5824426 Disks, tapes, cards
10/15/1998WO1998045841A1 Improved suspension design for a head gimbal assembly
10/14/1998EP0871170A2 Information reproducing apparatus and reproducing method
10/14/1998EP0871165A2 Information recording/reproducing apparatus and method for recording and/or reproducing information on information recording carrier by use of probe electrode
10/14/1998EP0871163A2 Optical head with a diffractive lens
10/14/1998EP0871161A2 Recording medium driver
10/13/1998US5822293 Magnetooptical recording/reproducing apparatus
10/13/1998US5822285 Atomic force microscopy disk data storage system with nonradial tracking lines
10/13/1998US5822282 Magneto-optical recording medium having a plurality of magnetic layers for use in light modulation technique
10/13/1998US5822281 Disk apparatus and disk access method employing counterelectromotive voltage from second voice coil motor to control first voice coil motor
10/13/1998US5822154 Magnetic head apparatus with resin portions sandwiching an elastic member to form elastic displacing portions and method of making the same
10/13/1998US5821004 Records or erases signals through temperature increase; decreases interference
10/13/1998US5820795 Manufacturing method of magneto-optical master disk
10/08/1998WO1998044494A1 System and method to compensate for data defects within a magneto-optical computer memory device
10/07/1998EP0869489A2 Atomic force microscopy data storage systems
10/07/1998CN1195166A Magneto-optic recording medium reproduction device , method of providing reproduction by the same, and magneto-optic recording medium therefor
10/06/1998US5818812 Optical recording medium and reproducing method for the same
10/06/1998US5818811 Information recording and reproducing method for recording information on and reproducing information from an optical recording medium including a land portion divided into a plurality of information tracks
10/06/1998US5818799 Apparatus for recording and/or reproducing a recording medium having data control function
10/06/1998US5818666 Linear drive motor apparatus for adjusting the relative position between and second yokes of a pair of magnetic circuits
10/01/1998WO1998043241A1 Information reproducer, information recorder and reference mark detection circuit
10/01/1998WO1998028742A3 Optical recording method and apparatus using this method
09/1998
09/30/1998EP0867907A2 Electron emission device for generating and emitting spin-polarized electrons
09/30/1998EP0867872A1 Tracking error detecting circuit of an optical storage apparatus
09/30/1998EP0867871A1 Focusing servo circuit of an optical storage apparatus
09/29/1998US5815483 Optical pickup
09/29/1998US5815477 Write test method for use in recording process for recording information by modulating the power of a laser light thereby forming a high-temperature state and a low-temperature state on a recording medium
09/29/1998US5815475 Recording medium management method where recording is carried out by data recording units in accordance with management tables
09/29/1998US5815474 Methods and apparatus for selectively inhibiting reproduction of recorded sets of data
09/29/1998US5815470 Disc drive unit
09/29/1998US5815469 Magneto-optical recording device having recording magnetic field in the same direction as reproducing magnetic field
09/29/1998US5815328 Lens actuator and optical disk apparatus
09/29/1998US5814807 Optical pick-up head and integrated type optical unit for use in optical pick-up head
09/29/1998US5814418 High density recording, high performance readout with high resolution
09/29/1998US5814400 Writing, erasing using laser beam
09/29/1998CA2083865C Substrate for optical recording medium and magneto-optical recording medium using same
09/29/1998CA2038785C Magneto-optical recording medium
09/23/1998EP0866448A1 Optical pickup
09/23/1998EP0866447A2 Optical disk
09/23/1998CN1193790A Photo detector circuit
09/22/1998US5812519 ROM-RAM Disk
09/22/1998US5812503 Positioning control system having an optical beam and a servo-error signal generating circuit for accurately irradiating a desired position
09/22/1998US5812501 Optical recording medium having a non-volatile identification code and method for encoding data using same
09/22/1998US5810979 Magnetooptical recording medium, method for producing the same, method for recording or reproducing information in or from the same
09/22/1998US5810477 System for identifying surface conditions of a moving medium
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