Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › G11B 7 - Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
Patents for G11B 7 - Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor (102,715)
09/1991
09/04/1991EP0444850A2 Optical floppy disk system
09/04/1991EP0444766A2 Optical pickup, optical information recording carrier and recording and reproducing apparatus thereof
09/04/1991EP0444740A1 Liquid crystalline polyesters for optical data storage
09/04/1991EP0444367A1 A stamper for injection molding
09/04/1991EP0444145A1 Circuit arrangement for identifying the type of an optical record carrier.
09/03/1991US5046158 Optical scanning apparatus with control circuit for optimizing the operating range of an A/D converter
09/03/1991US5046062 Movable body driving apparatus
09/03/1991US5046061 Optical light beam scanner with zero order beam reflector
09/03/1991US5046060 Servo error controls
09/03/1991US5046058 Track access apparatus having a learning control for positioning a transducer for a disc-shaped recording mechanism
09/03/1991US5045868 Optical recording apparatus for varying pit width according to recording wavelength
09/03/1991US5045676 Optical media having interlaced data rings
09/03/1991US5045604 Selective formation of methacrylimide containing polymers
09/03/1991US5045440 Stabilization of optical information storage media by incorporation of nitrogen containing compounds
09/03/1991US5045438 With precise track pitches, latent image on photoresist, laser or electron beam radiation of rotating disk
09/03/1991US5045373 Laminated product, compound used in the laminated product and optical information carrier provided with the laminated product
09/03/1991US5044729 Objective lens actuator
09/03/1991US5044718 Optical head used in optical information processor
09/03/1991CA1288511C Method for erasing information
09/03/1991CA1288224C Method for producing information storage disk
09/02/1991CA2037369A1 Liquid crystalline polyesters for optical data storage
08/1991
08/29/1991DE4104779A1 Special design optical head assembly - uses internal reflection properties of prism to ensure accurate deflection of light beam
08/28/1991EP0443878A2 Magneto-optical recording medium
08/28/1991EP0443847A2 Information recording/reproducing apparatus
08/28/1991EP0443822A2 Optical disk inclination detection device
08/28/1991EP0443797A2 Optical disc having signal recording layer on each side and method for producing same
08/28/1991EP0443522A2 Optical information recording medium
08/28/1991EP0443049A1 Sputtering apparatus and sputtering system
08/28/1991CN1013721B Focus-error detection system and optical read-out and/or put-in apparatus
08/27/1991US5043972 Optical component-driving device for optical pickup
08/27/1991US5043971 Method and apparatus for pre-compensation in an optical disc
08/27/1991US5043968 Apparatus for cleaning the pick up lens of a compact disc player
08/27/1991US5043965 Optical apparatus for optical information recording medium
08/27/1991US5043964 Linear pickup actuator for moving an optical pickup in a radial direction of a disk
08/27/1991US5043405 Methacrylic copolymer having low moisture absorption properties
08/27/1991US5043403 Polycarbonates containing mesogenic compounds as end groups, their preparation and their use
08/27/1991US5043251 Process of three dimensional lithography in amorphous polymers
08/27/1991US5042956 Recording drum assemblies
08/22/1991WO1991012610A2 Stabilization of optical information storage media by incorporation of nitrogen containing compounds
08/22/1991WO1991012609A1 Optical scanning device
08/22/1991DE4004858A1 Optische abtastvorrichtung Optical scanning device
08/21/1991EP0442751A2 Servo control system
08/21/1991EP0442712A2 Optical information recording and/or reproducing apparatus
08/21/1991EP0442566A1 Information recording device
08/21/1991EP0442514A2 Photodetector fixing mechanism
08/21/1991EP0442443A1 Optical unit actuator for information recording/reproducing apparatus
08/21/1991EP0442442A1 Objective lens actuator for optical storage drive
08/21/1991EP0442225A2 Head/gimbal assembly having low stiffness cross band flexure
08/21/1991EP0441969A1 Seek circuit of optical disk
08/21/1991EP0441967A1 Optical recording medium, data recording method and data reproducing method
08/21/1991CN1053962A Optical scanning device using plurality of scanning spots
08/20/1991US5042023 Apparatus and method for overwrite prevention
08/20/1991US5042022 Optical disk recording/reproducing apparatus with synchronized data writing
08/20/1991US5042021 Eccentricity correction apparatus for an optical disc device
08/20/1991US5042020 Information recording and/or reproducing apparatus with an optical medium sensor for providing automatic variation in light beam intensity in accordance with various recording medium
08/20/1991US5042019 Method of and apparatus for seeking a desired track by counting track crossing signals which are detected within a predetermined time interval
08/20/1991US5041356 Process for preparing optical recording material
08/20/1991US5041341 Information recording media
08/20/1991CA1287918C Preformatted optical recording card and method of producing the same
08/17/1991CA2036412A1 Optical head
08/17/1991CA2036277A1 Photodetector fixing mechanism
08/17/1991CA2033700A1 Head/gimbal assembly having low stiffness cross band flexure
08/14/1991EP0441611A1 Magneto-optical recording medium and method for processing the surface
08/14/1991EP0441435A1 Optical scanning device using a plurality of scanning spots
08/14/1991EP0441378A2 Frequency and/or phase characteristic control circuit
08/14/1991EP0441362A1 Optical disk recording/reproducing apparatus and a photoelectric conversion amplifier therefor
08/14/1991EP0441326A1 A process for preparing a photo-recording medium
08/14/1991EP0440963A2 Enhanced focus sensing in optical information storage systems
08/14/1991EP0440849A1 Recording - reading head disk system
08/14/1991EP0440810A1 Optical recording medium and information recording apparatus
08/14/1991CN1013527B Information recording and reproducing equipment
08/13/1991US5040165 Optical information recording medium and method of fabricating the same
08/13/1991US5040163 Laser beam control circuit for optical recording/reproducing apparatus
08/13/1991US5040160 Disk and cleaner chip for cleaning optical heads
08/13/1991US5039798 Oxygen bridged naphthalocyanine dimers and their use in optical information storage media
08/13/1991US5039600 Solubility in organic solvents, absorption of semiconductor laser light
08/13/1991US5039583 Erasable optical information storage system
08/13/1991US5039558 Optical recording medium and method of manufacturing thereof
08/13/1991US5039202 Optical system driving apparatus
08/13/1991US5039182 Storing information in dual holographic images
08/13/1991US5038660 Recording medium playing apparatus with program discontinuity response
08/08/1991WO1991011807A1 Optical disc system and optical disc
08/08/1991WO1991011806A1 Magneto-optical recording/reproducing apparatus
08/08/1991WO1991011805A1 Transfer apparatus and transfer method
08/08/1991WO1991011804A1 Data storage medium and methods for recording and reading of data
08/08/1991WO1991011692A1 Source intensity adjustment apparatus for optical channel
08/07/1991EP0440215A2 Transfer device for disc base plate
08/07/1991EP0440214A2 Method for producing optical disc
08/07/1991EP0440196A2 Supporting unit for lens drive
08/07/1991EP0439876A1 Optical head with a double-beam splitter
08/07/1991EP0439870A1 Method for the manufacture of carriers for optically readable information from polycarbonate
08/07/1991EP0324831A4 Erasable optical wallet-size data card
08/07/1991EP0160008B1 Quad density optical data system
08/07/1991CN1053702A Method of and device for providing record carrier with pattern of areas having modified optical properties
08/06/1991US5038352 Laser system and method using a nonlinear crystal resonator
08/06/1991US5038339 Record carrier having servo-track portions and sector addresses having the same predetermined width
08/06/1991US5038338 Recording waveform for mark-length modulation optical recording
08/06/1991US5038336 Cleaning device for optical pick-up lens
08/06/1991US5038335 Hierarchically multiplexed optical recording system for storage of digital data
08/06/1991US5038334 Optical spot position detection device for an optical disk apparatus
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