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)
11/1988
11/15/1988	US4785440 Method and apparatus for driving an optical pickup of an optical information recording and reproducing apparatus
11/15/1988	US4785439 Optical memory accessing and tracking apparatus with pickup and lens servoing during tracking
11/15/1988	US4785438 Magneto-optical disc reproducing apparatus with improved two-part head
11/15/1988	US4785167 Photodetector having cascaded photoelements
11/15/1988	US4785088 Pigments and their preparation
11/15/1988	US4785053 Optical resin material having improved birefringence
11/15/1988	US4784447 Holographic objective mirror for optical storage
11/15/1988	CA1244943A1 Optical data storage device
11/15/1988	CA1244941A1 Optical disk player
11/15/1988	CA1244940A1 Photo sensor device and optical pickup device
11/09/1988	EP0290084A2 Method for marking disc-shaped information carriers
11/09/1988	EP0290024A2 An access method of an optical disk drive by means of multi-track jump and a circuit therefor
11/09/1988	EP0290009A2 Information storage medium
11/09/1988	EP0289642A1 Erasable electro-optic storage disk
11/08/1988	US4783776 Method of recording and reproducing digital information and apparatus therefor
11/08/1988	US4783775 With a beam of radiation
11/08/1988	US4783774 Control system for optical information reproducing apparatus
11/08/1988	US4783590 Error signal producing device having improved linearity
11/08/1988	US4783589 Focus and tracking detection apparatus for optical head employing light guide means having different radii of curvature
11/08/1988	US4783393 Dye mixtures and optical recording elements containing same
11/08/1988	US4783386 Changes detected in recording and absorptive layer by lasers
11/08/1988	US4783236 Method of making memory devices
11/02/1988	EP0289352A2 Optical recording medium and process for making an optical recording medium
11/02/1988	EP0289309A2 An apparatus for reading an optical disk
11/02/1988	EP0289304A2 Beam control device for a laser used in an optical memory system
11/02/1988	EP0289260A2 Optical disc recording device
11/02/1988	EP0289190A2 Optical reading/writing apparatus
11/02/1988	EP0289143A2 Optical disk drive apparatus
11/02/1988	EP0289004A2 Recording and reproducing apparatus
11/02/1988	EP0288580A1 Method of manufacturing a flexible optical information recording medium
11/02/1988	EP0288570A1 Draw type optical recording medium
11/02/1988	CN88102870A System for recording information signal, and record carrier and recording device for use in the system
11/01/1988	US4782477 Transparent substrate allows radiation beam to pass through
11/01/1988	US4782476 Objective lens-driving unit
11/01/1988	US4782475 Flexure supported read head
11/01/1988	US4782474 Tracking servo system for controllably projecting an optical beam on an optical disk
11/01/1988	US4782221 Printed data strip including bit-encoded information and scanner control
11/01/1988	US4782006 Optical recording employing diacetylene compound and dye to form and visualize a latent image
11/01/1988	US4781790 Method of making memory devices
11/01/1988	US4781789 Masking, ablation with high intensity light beam
11/01/1988	CA1244129A1 Optical storage structure
11/01/1988	CA1243877A1 Optical information recording medium
10/1988
10/26/1988	EP0288354A2 Process for manufacturing an optical recording medium
10/26/1988	EP0288289A2 Optical disc reading apparatus
10/26/1988	EP0288230A2 Focus detecting apparatus
10/26/1988	EP0288140A2 Improvements relating to the formatting of optical data storage members
10/26/1988	EP0288133A2 Optical wavelength division multiplex recording and reproduction apparatus
10/26/1988	EP0288114A1 System for recording information signal, and record carrier and recording device for use in the system
10/26/1988	EP0287887A2 Method for preparing spirobiindane polycarbonates, and resulting products and articles
10/26/1988	EP0287648A1 Ray scanning system.
10/25/1988	US4780867 Method for erasably recording data by viscoelastic shear deformation
10/25/1988	US4780865 Optical information reproducing apparatus with tilt correction including projection and detection of a same diffusely illuminated field
10/25/1988	US4780772 Apparatus for reproducing digital signals from a digital audio recording medium
10/25/1988	US4780383 Optical storage system having expanded capacity
10/20/1988	WO1988008191A1 Laser reproduction apparatus
10/20/1988	WO1988008154A1 High contraste optical memory tape
10/20/1988	WO1988008120A1 Optical memory card with versatile storage medium
10/19/1988	EP0287394A2 Process for producing optical recording medium
10/19/1988	EP0287382A2 Optical variable wavelength recording and reproducing apparatus
10/19/1988	EP0287377A2 Azamethine compounds, process for preparing the same and a medium for recording optical information using such compounds
10/19/1988	EP0287316A2 Recording colour image and audio signals
10/19/1988	EP0287285A2 Device for driving optical parts of an optical pickup
10/19/1988	EP0287241A2 Optical wavelength division multiplex recording and reproduction apparatus
10/19/1988	EP0287235A2 Pickup actuator for disk-type media
10/19/1988	EP0286938A2 Irreversible optical recording media and method of manufacture
10/18/1988	US4779259 Optical head assembly with efficient light source coupling surface and method of construction
10/18/1988	US4779256 Apparatus for detecting deviations from a mutually perpendicular condition between a disc and a light beam
10/18/1988	US4779255 Optical reading/reproducing apparatus
10/18/1988	US4779254 Read head adjusting motor assembly
10/18/1988	US4779253 Sampled servo for an optical disk drive
10/18/1988	US4779252 Apparatus for automatically reproducing preferred selection from a record carrier
10/18/1988	US4779251 Optical disk memory system with closed loop micro-jump between adjacent tracks
10/18/1988	US4778991 Light beam scanning read-out apparatus and recording apparatus
10/18/1988	US4778984 Apparatus for detecting focus from astigmatism
10/18/1988	US4778747 Method of manufacturing optical memory element
10/18/1988	CA1243402A1 Methods of preparing and applying subbing layers for optical data disks
10/18/1988	CA1243401A1 Optical recording and reproducing apparatus having erasing function
10/12/1988	EP0286406A2 Optical recording medium
10/12/1988	EP0286368A2 Anamorphic single lens
10/12/1988	EP0286326A2 Method and apparatus for fabricating an optical disc master and an optical disc
10/12/1988	EP0286308A1 Information recording method for recording data and directories in a plurality of blocks comprising divided recording areas
10/12/1988	EP0286297A1 Information recording method and apparatus
10/12/1988	EP0286126A2 Information recording method and apparatus using reversible phase change
10/12/1988	EP0286032A2 Disk apparatus
10/12/1988	EP0285965A2 Mixed phthalo-naphthalocyanines and thin radiations sensitive coating film containing same
10/12/1988	EP0285800A2 Servomechanism for optical disk system
10/12/1988	EP0285661A1 Focal spot position detector of an optical data recording/reproducing apparatus
10/11/1988	US4777632 Data storage disk
10/11/1988	US4777538 For stabilizing video image during recorded program changes
10/11/1988	US4777492 Thermal recording method
10/11/1988	US4777356 Reader for optical type record card
10/11/1988	US4777215 Thermoplastic mixtures of aromatic polycarbonates and polystyrenes and their use as substrates for optical data memories
10/11/1988	US4777126 Optical recording media and method of making the media
10/11/1988	US4777082 Optical magnetic recording medium
10/11/1988	US4777068 Optical recording medium
10/11/1988	US4776652 Optical head having two holographic optical elements, with one element inclined relative to the other
10/11/1988	CA1243115A1 Apparatus for reproducing information from a record carrier
10/11/1988	CA1242883A1 Enhanced optically sensitive medium using organic charge transfer materials to provide reproducible thermal/optical erasure
10/06/1988	WO1988007743A1 Magnetoelectric mechanism for moving an optical bead
10/06/1988	WO1988007742A1 Optical recording/reproducing apparatus

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