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)
11/1996
11/13/1996EP0742557A2 Thin film magnetic head for use with magneto-optic disc drive
11/13/1996CN1135803A Scanning head including a magneto-optical element and scanning device including the scanning head
11/13/1996CN1135802A Optical pick-up apparatus
11/13/1996CN1135639A Device for recording constant silence interval and method thereof
11/13/1996CN1135637A Information recording and replaying device
11/12/1996US5574713 Method for controlling an optical recording device for improved recording mark detection
11/12/1996US5574709 Automatic gain control system and information reproduction apparatus using it
11/12/1996US5574703 Magneto-optical method and apparatus for recording/reproducing data
11/12/1996US5574702 Magnetic head current control circuit for use in a magnetic head drive device, and magnetic/magnetooptical recording apparatus using the same
11/12/1996US5573847 Magneto-optic disk exhibiting a phase shift between plus and minus twelve degrees and a reflectivity between fifteen and twenty-five percent
11/12/1996CA2081864C External magnetic field generation apparatus
11/06/1996EP0741508A2 Apparatus and method for suppression of electromagnetic interference
11/06/1996EP0741382A1 Marking generating apparatus, method of forming laser marking on optical disk, reproducing apparatus, optical disk and optical disk producing method
11/06/1996CN1135076A Recording apparatus employing magnetic head driving circuit
11/05/1996US5572506 Optical information recording medium with gap area capable for preformatting with a specified pattern
11/05/1996US5572502 Optical disk apparatus
11/05/1996US5572491 Magneto-optical recording device capable of recording two magneto-optical discs
11/05/1996US5572490 E-type magnetic head for magneto-optical recording device
11/05/1996US5572323 Infinitesimal displacement measuring apparatus and optical pick-up unit
11/05/1996US5571646 Multilayer element with electrodes and charge retaining layer with pentafluorostyrene layer
11/05/1996US5571629 Optical recording medium
10/1996
10/30/1996EP0740297A2 Magneto-optical method and apparatus for recording/reproducing data
10/30/1996EP0740296A2 Magneto-optical recording media
10/30/1996EP0740295A1 Optical pickup apparatus and optical disk drive apparatus
10/30/1996EP0740294A1 Optical head
10/30/1996EP0740291A2 Optical information recording medium; optical information recording/reproducing apparatus using the medium, and master disk exposure apparatus for producing the same
10/30/1996EP0740290A2 Recording medium having first tracks and second tracks at different levels and with different recording formats
10/30/1996EP0740289A1 Optical information recording medium
10/29/1996US5570335 Reproducing waveform correction circuit for optical information recording/reproducing system
10/29/1996US5570333 Head device for magneto-optical disk
10/29/1996US5570329 System for selectively inverting a magnetic bias field for magneto-optic recording
10/29/1996US5569517 Diameter of beam spot is reduced, mask formed of a material that can undergo crystal to crystal transition
10/24/1996WO1996033490A1 Data-reading process
10/23/1996CN1134012A Optical disk
10/23/1996CN1134011A Pit/track discriminating circuit
10/22/1996US5568466 Magneto-optical disc
10/22/1996US5568463 Semiconductor laser device to detect a divided reflected light beam
10/22/1996US5568461 Optical information recording and reproducing apparatus
10/22/1996US5568457 Optical pickup system for reading or writing information on disk using hologram device and wollaston prism
10/22/1996US5568454 Apparatus and method for detecting a defect on a magneto-optical disk
10/22/1996US5568417 Fluorescent method, fluorescent device, fluorescent recording method, flourescent recording media, fluorescent record reading method, fluorescent record reading device and fluorescent record deleting device
10/22/1996US5568336 Magnetic reading device with alternating magnetic biasing means
10/17/1996WO1996011484A3 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
10/16/1996EP0737969A2 Optical recording method and apparatus
10/16/1996EP0737963A2 Seek actuator for optical recording
10/16/1996CN1133472A Method and equipment for recording data
10/15/1996US5566151 Optical devices having array detectors with light receiving photo arrays larger than an incident laser beam cross-section
10/15/1996US5566147 Magneto-optical recording apparatus and method for modulating the strength of a generated magnetic field into three levels
10/15/1996US5566145 Head tracking system in a disk drive
10/15/1996US5566144 Recording/reproducing apparatus having buffer memory for preventing discontinuity in recording/reproducing operations and method for same
10/15/1996US5566143 Positioning control system utilizing optical beam
10/15/1996US5566141 Track retrieving method for making a light beam jump and scan from one track to another
10/15/1996US5566077 Media and optical drive operating temperature control system and method
10/15/1996US5565278 Magneto-optical recording medium
10/15/1996US5565266 Indium tin oxide, silicon or silicon oxide seed layer, alternating layers of cobalt and platinum and/or palladium
10/12/1996CA2171154A1 Seek actuator for optical recording
10/12/1996CA2170971A1 Apparatus and method for suppression of electromagnetic interference
10/10/1996WO1996031875A2 Optical information recording medium, manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus
10/09/1996EP0736867A1 Method and apparatus for controlling bias levels
10/09/1996EP0736866A2 Bias coil for magneto-optical drive
10/09/1996EP0736212A1 Method of masking data on a storage medium
10/09/1996CN1132911A Servo control method and apparatus for opto-magnetic disc
10/08/1996US5563873 Multilayer optical disk and apparatus
10/08/1996US5563871 Rotary actuator with a magnetic bias bearing configuration for rotating an optical element in an optical data storage system
10/08/1996US5563869 Prism has a plurality of reflective regions each with a predetermined phase difference
10/08/1996US5563867 Optical tape duplicator
10/08/1996US5563864 Information recording and reproducing apparatus
10/08/1996US5563863 Information reproducing method and apparatus for reproducing digital information by determining the information in multiple bit units based on binarizer output signals
10/08/1996US5563861 Optical disc recording apparatus which controls re-recording after a disturbance as a function of the frequency of the detected disturbance
10/08/1996US5563853 Magneto-optical recording apparatus that compensates for magnetic fields leaking from an objective lens actuator and a linear motor
10/08/1996US5563852 Readout layer has varying composition so that the curie temperature on a reproducing light incident side is higher than curie temperature on a recording layer side
10/08/1996US5563851 Magneto-optical recording apparatus capable of reproducing recording information while recording
10/08/1996US5563000 Multilayer magnetooptic recording media
10/08/1996CA2173421A1 Disk type recording medium
10/03/1996WO1996030907A1 Device and method for driving discoid recording medium and discoid recording medium
10/03/1996WO1996030902A1 Spare and calibration sector management for optical worm media
10/02/1996EP0735532A2 Optical recording method and control
10/02/1996EP0735531A1 Thermo-magnetic recording method
10/02/1996EP0735529A2 Optical reproduction medium and method of reproducing data stored therein
10/02/1996EP0735527A1 Super-resolution optical head apparatus
10/02/1996DE19611437A1 Magneto-optic recording device with thick-film layer arrangement
10/02/1996DE19602392A1 Decoder and memory unit for optical disc drive
10/01/1996US5561656 Pulse width modulation optical disk drive with pulsed laser preheating between marks
10/01/1996US5561655 Apparatus and method for differential tracking in a magneto-optic data storage system using mark edge detection
10/01/1996US5561652 Apparatus for recording data on optical disk
10/01/1996US5561644 Short seeking time optical disc apparatus
10/01/1996US5561642 Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus
10/01/1996US5561089 Glass-ceramic for information recording disk
10/01/1996US5560998 Magneto-optical recording medium
10/01/1996CA2034296C Information processing apparatus, information processing method, and recording medium employed therefor
10/01/1996CA2021681C Information recording and reproducing device
09/1996
09/26/1996WO1996029700A1 Magnetic recorder and magnetooptical recorder
09/26/1996WO1996029698A1 Disk apparatus and disk access method
09/25/1996EP0734020A2 Apparatus and method for detecting a sync pattern and an address mark within data provided from a recording medium
09/25/1996EP0733262A1 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
09/25/1996CN2236160Y Adress-selective multi-function storage plate capable of quickly expanding
09/24/1996US5559784 Multi-layer optical information detection by two laser beam and optical multilayer recording medium
09/24/1996US5559780 Recording apparatus for an optical recording medium
09/24/1996US5559769 Recording/reproducing apparatus for both read-only and magneto-optical disc-shaped recording medium
09/24/1996US5559763 Magnetic head driving device and magnetooptical recording apparatus with acceleration coil for shortening current inversion time
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