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)
01/1996
01/09/1996US5483513 Recording state detecting apparatus and optical recording medium
01/09/1996US5483509 Optical pick-up device with error detection using P-wave
01/09/1996US5483508 Optical recording and reproducing apparatus using a hologram to detect and judge a plurality of pit patterns
01/03/1996EP0454854B1 Optical pickup apparatus comprising a focus adjusting apparatus
01/03/1996CN1114516A Recording and/or reproduction apparatus
01/02/1996US5481530 High density optical recording method and recording medium
01/02/1996US5481525 Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus
01/02/1996US5481515 Optical information storage medium control apparatus
01/02/1996US5481508 Magneto-optic recording medium method of manufacturing the same and magneto-optic recording system
01/02/1996US5481410 Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
01/02/1996US5481386 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same
01/02/1996CA2063189C Read out apparatus for reading out information from magneto-optic disk
12/1995
12/27/1995EP0689204A2 Magneto-optical recording apparatus capable of erasing/writing or direct overwriting in dependence on the medium type
12/27/1995EP0689203A1 Magnetic head and magnetic head device
12/27/1995EP0689200A1 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
12/26/1995US5479391 Disk apparatus
12/26/1995US5479388 Servo control system for head recording and/or reproducing information on and/or from recording medium
12/26/1995US5479387 Optical head including multiple photo detectors for reading signals and error signals for servoing from both a read-only recording medium and a magneto-optical recording medium
12/26/1995US5479384 Optical storage device having a plurality of juxtaposed memory cells
12/21/1995WO1995034885A2 Magneto-optical recording medium
12/19/1995US5477557 Laser drive circuit with independently adjustable maximum and minimum power levels
12/19/1995US5477528 Magneto-optical disk and the reproducing method thereof
12/19/1995US5477525 Data destruction preventing method, recording apparatus provided with data destruction preventing capability, and disc recorded with guard band
12/19/1995US5477521 Prism for an optical pickup of an optical recording and reproducing device
12/19/1995US5477516 Reproducing apparatus for accessing track segments in the forward and reverse directions
12/19/1995US5477509 Magneto-optical head circuit for minimizing the overshoot reversing current
12/19/1995US5476713 Magneto-optical recording medium
12/19/1995CA2005556C Recording/reproducing device
12/13/1995EP0686970A2 Magneto-optical recording medium and reproducing method using the medium
12/13/1995EP0686298A1 Optical method and system for reading/writing data on a recording medium
12/13/1995EP0451297B1 Pretreatment of overwritable opto-magnetic recording medium and pretreated overwritable opto-magnetic recording medium
12/13/1995CN1113340A Recording and/or reproducing apparatus for recording medium
12/12/1995US5475820 Method for using one of two storage directories only after the other directory is full for write management in a disk device
12/12/1995US5475672 Variable-length information recording with reference marks for time reference during information reading
12/12/1995US5475671 Optical information detection circuit and detecting photoelectrically converted signal from light receiving means comprising at least two light receiving elements
12/12/1995US5475666 Optically modulated overwritable recording device
12/12/1995US5475658 Magneto-optical recording device for improving C/N ratio
12/12/1995US5475657 Overwrite capable magnetooptial recording apparatus
12/12/1995US5475656 Optical disk memory and information processing apparatus
12/06/1995EP0685837A1 Method of writing data onto and reading data from a magnetic carrier and a head unit for carrying this out
12/05/1995US5473584 Recording and reproducing apparatus
12/05/1995US5473583 Magneto-optical recording medium, recording and playback method and apparatus for the same
12/05/1995US5473582 Magneto-optical recording method having constant recording sensitivity and magneto-optical recording medium used therefor
12/05/1995US5473581 Magneto-optical data recording system continuously irradiating optical pulsers
12/05/1995US5473480 Disc-like recording medium and apparatus for producing it
12/05/1995US5473470 Polarization detector
12/05/1995US5472758 Optical recording medium for short-wavelength of laser beam and read/write/erase method using the medium
11/1995
11/30/1995DE4418747A1 Classifying quality of running gear of optical disc playing appts.
11/30/1995DE19517512A1 High density magneto=optical recording medium
11/30/1995DE19516983A1 Magneto=optical recording medium with protective and covering layers
11/29/1995EP0684601A1 Optical recording medium
11/29/1995EP0684600A1 Magneto-optical recording medium and reproducing method therefor
11/29/1995EP0684598A2 Thermal recording medium capable of keeping width of mark train constant and recording method for the same
11/29/1995CN1112797A Polarizing beam splitter and magneto-optic reading device using the same
11/29/1995CN1112714A Device for driving magnetic brasing coil head of small magnetic disc recording and playing set
11/29/1995CN1112708A Magnetooptic disk player
11/29/1995CN1112675A Temperature detecting circuit
11/28/1995US5471457 Methods and devices for recording one or more signals which have been encoded by on error detection and correction algorithm on a record carrier by means of an optimal recording intensity
11/28/1995US5471453 Information recording-reproducing apparatus
11/28/1995US5471443 Method of selectively concealing magneto-optical compact disk data for playback upon demand
11/28/1995US5471440 Magnetooptic apparatus with integrated detecting element providing signal with high S/N ratio
11/28/1995US5471439 Magnetic head device with slidable and adjustable magnetic head
11/28/1995US5471064 Precision machining method, precision machining apparatus and data storage apparatus using the same
11/28/1995US5470690 Optical information storage on a bacteriorhodopsin - containing film
11/28/1995US5470627 Double-sided optical media for a disk storage device
11/22/1995CN1112380A Recording medium management method
11/22/1995CN1112273A Disc recording apparatus and file management method
11/21/1995US5469426 High write speed erasable optical recording disk using active semiconductor devices at each pixel
11/21/1995US5469424 Electronic device utilizing a material capable of storing information which is readable by illumination
11/21/1995US5469422 Writing and erasing information by varying the temperature of an optical recording medium
11/21/1995US5469420 Multi-value recorded data detecting method
11/21/1995US5469419 Information processing apparatus with recording medium discharging mechanism for preventing change or loss of information of recording medium by temperature increase of the apparatus
11/21/1995US5469416 Apparatus for reproducing recorded data and selectively either of read-only or recorded synchronization information from a magneto-optical recording medium
11/21/1995US5469413 Magneto-optic recording system and associated controllable heat source
11/16/1995WO1995030986A1 Magnetooptical recording medium, and method and apparatus for recording/reproduction
11/16/1995WO1995030985A1 System for simultaneous storage and retrieval of data on a disk
11/16/1995CA2189767A1 Method and system for simultaneous storage and/or retrieval (storval) of a plurality of data on a disk means
11/15/1995CN1111795A Magnetic head drive for minidisk player
11/14/1995US5467336 Magneto-optical recording/reproducing apparatus with optical pickup device having a multi-layer dielectric film beam splitter
11/14/1995US5467327 Method of masking data on a storage medium
11/14/1995US5467237 Sliding type magnetic head for magneto-optical recording
11/14/1995CA2036138C Magneto-optical recording medium
11/09/1995WO1995030225A1 Memory based on arrays of capacitors
11/09/1995WO1995030163A1 Optical transmissive component with anti-reflection gratings
11/08/1995EP0681290A1 Scanning device with adaptation
11/08/1995EP0680656A1 Optical data storage and retrieval system and method
11/08/1995EP0519949B1 Platinum or palladium/cobalt multilayer on a zinc oxide or indium oxide layer for magneto-optical recording
11/07/1995US5465248 Deflecting a light beam in the same direction and speed of a recording medium by a rotating polygon or a holographic disk
11/07/1995US5465247 For recording and reproducing information
11/02/1995WO1995029483A1 Magnetooptic recording medium and magnetooptic recording head
11/02/1995EP0680038A2 Device for controlling the position and/or the focalisation of a focalised light beam
11/02/1995EP0483268B1 Optical devices
11/02/1995DE4415249A1 Recorder using magneto-optical disc
10/1995
10/31/1995US5463610 Two-beam optical head for forming first and second light spots on a recording medium
10/31/1995US5463609 Information recording and reproducing device and a method using the same
10/31/1995US5463608 Apparatus for reproducing optical record medium
10/31/1995US5463606 Optical information reading and reproducing apparatus using pseudo DC-free codes
10/31/1995US5463602 Reproducing apparatus which can play multiple types of discs and biases focusing error signal based on disc type
10/31/1995US5463600 Magneto-optical recording system using recording waveform having a plurality of power levels providing high recording density
10/31/1995US5463578 Magneto-optic memory allowing direct overwrite of data
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