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)
10/1991
10/02/1991EP0449261A2 Resin composition for an optical disc and an optical disc using it
10/02/1991EP0449227A2 Sputtering apparatus
10/02/1991EP0449193A1 Optical coupling apparatus for coupling light into a waveguide
10/02/1991EP0449121A2 Optical recording medium and recording/reproducing method therefor
10/02/1991EP0448861A1 Semiconductor integrated circuit device
10/02/1991EP0393118A4 Method for reading data pages on a data surface
10/02/1991DE4109262A1 New di:alkynyl malonate cpds. and polymers for photochromic materials - prepd. by reacting malonyl di:chloride with unsatd. alcohol pref. prop-2-yn-ol and knoevenagel condensation
10/01/1991US5054014 Optical disk recording/reproducing apparatus and rotary drive therefor
10/01/1991US5054013 Track transverse detection signal generating circuit
10/01/1991US5053611 Device for reducing mechanical vibrations when utilizing a magneto-optical card as a recording medium
10/01/1991US5053610 Reading apparatus and photodetector for optical recording medium
10/01/1991US5053323 Optical information media comprising phenyl-substituted naphthalocyanines and synthesis thereof
10/01/1991US5053288 Heat, humidity stabilization
10/01/1991US5053272 Optical storage device
10/01/1991US5053252 Method and apparatus for manufacturing optical memory devices
10/01/1991US5052772 Fiber type light wave-length converting apparatus
10/01/1991CA2039396A1 Process for the creation of selective fluorescent sites or regions in parylene films and coatings
10/01/1991CA1289968C Macrocyclic tetramers having columnar tridimensional mesophases
09/1991
09/25/1991EP0448408A2 Optical cutting method and optical cutter
09/25/1991EP0448378A2 Information recording and reproducing device
09/25/1991EP0448362A2 Mirror rotation angle detection mechanism
09/25/1991EP0448323A1 Non-contact-guidable magnetic floating device
09/25/1991EP0448216A2 Disk drive with zero skew rotary actuator system
09/25/1991EP0447713A2 Position detector
09/25/1991EP0447711A2 Process for manufacturing an optical disk master
09/25/1991EP0447466A1 Optical recording and/or reproducing apparatus.
09/25/1991EP0303646B1 Instrument for the restitution of data
09/25/1991CN1054864A 磁动机 Magnetic motive
09/25/1991CN1054848A 光扫描装置 Optical scanning device
09/24/1991US5052005 Method of mounting a laser diode unit
09/24/1991US5051978 Coated media for optical recording
09/24/1991US5051975 Optical recording and/or reproducing apparatus having a temperature adjusting device
09/24/1991US5051974 Optical head device having a light splitter with a diffraction grating structure
09/24/1991US5051972 Track accessing control apparatus having a high-pass filter for extracting a tracking signal
09/24/1991US5051836 Optical disc with pregrooves and recording method and apparatus using an optical disc of that type
09/24/1991US5051815 Laser beam emitting unit with high frequency noise shutoff
09/24/1991US5051677 Apparatus for processing rotary member
09/24/1991US5051569 Method for recording data onto optical data recording cards including data regions and sync regions
09/24/1991US5051340 Master for optical element replication
09/24/1991US5051337 Porphine derivatives containing ionic groups
09/24/1991US5051314 Laminate for protecting optical recording layer
09/24/1991US5050964 Objective lens supporting mechanism for use in an optical head of an optical disc apparatus
09/24/1991US5050963 Method for securing optical parts to a support member and a ring member for use therein
09/24/1991CA1289359C Optical recording medium, method of producing the same and method of producing the optical recording card
09/20/1991WO1991014740A1 Metal chelate compound and optical recording medium comprising the same
09/20/1991CA2057864A1 Metal chelate compound and optical recording medium using it
09/19/1991WO1991014262A1 Optical information medium exhibiting sharp threshold for marking and excellent cnr
09/19/1991WO1991014261A1 Optical information card
09/18/1991EP0447319A2 A system for controlling continuous data input of an optical disk
09/18/1991EP0447265A2 Optical information recording/reproducing apparatus
09/18/1991EP0447236A1 Optical disc
09/18/1991EP0447072A2 Cycloolefin random copolymer and process for preparing same
09/18/1991EP0446995A1 Information recording device as well as information read device
09/18/1991EP0446967A2 An optical memory element
09/18/1991EP0446892A2 Optical data medium recording methods
09/18/1991EP0446717A2 Photochromic monomers and polymers derived from them
09/18/1991EP0446679A2 Optical disk and optical information recording method
09/18/1991EP0446412A2 Servo apparatus for optical disk player
09/18/1991CN1054684A Circuit for reversing magnetic field
09/18/1991CN1014009B Optical recording medium and method of its production
09/18/1991CN1014008B Optical-disk storage head using coupling-spectroscopic prism
09/17/1991USRE33693 Device using ordered semiconductor alloy
09/17/1991US5050177 Laser diode driving circuit
09/17/1991US5050157 Friction reducing piezoelectric feed guide mechanism
09/17/1991US5050156 Method and apparatus for calibrating the writing power applied to an optical media
09/17/1991US5050155 Pick-up device for use in an optical information recording system utilizing a diffraction grating with blaze characteristics
09/17/1991US5050154 Optical recording/reproducing module having reduced size
09/17/1991US5050153 Semiconductor laser optical head assembly
09/17/1991US5050152 Optical pickup device compensating for carriage/guide play or wobble
09/17/1991US5050151 Apparatus for playing back data read out of data tracks on a recorded medium
09/17/1991US5050150 Information disc apparatus
09/17/1991US5050149 Servo device for disc player
09/17/1991US5050146 Track seek recovery system and method
09/17/1991US5050145 Optical disk recording and reproducing apparatus having faster reproducing speed than recording speed
09/17/1991US5050144 Recording intensity modulated signals and polarization-modulated optical signals in the same area of a storage member
09/17/1991US5050015 Method and arrangement for reducing wear in a magnetic storage means
09/17/1991US5049733 Semiconductor chip detecting device for providing focusing and reproduction signals
09/17/1991US5049732 Optical pickup device with diffraction device
09/17/1991US5049462 Reading out information stored in thin polymer layers
09/17/1991US5049428 Optical information recording medium
09/17/1991US5048745 Roll stamper for molding substrate used for optical recording medium, process for preparing same, and process for preparing optical recording medium making use of it
09/17/1991CA1289217C Photodetector having cascaded photoelements
09/11/1991EP0446063A1 Recording medium and player for playing the same
09/11/1991EP0445148A1 Alloys for use in optical recording
09/10/1991US5048007 Optical information carrier having interconnected buffer spaces for maintaining its flat shape
09/10/1991US5048006 Optical information carrier having interconnected buffer spaces for maintaining its flat shape
09/10/1991US5048004 Optical recording medium recording and reproducing device
09/10/1991US5048002 Photodisc apparatus with means for canceling offset of tracking servo loop
09/10/1991US5048001 Load correction method for an information retrieval apparatus
09/10/1991US5048000 Optical information reading apparatus comprising a diffraction grating member having first and second portions
09/10/1991US5047999 Optical record carrier reader calculating track pitch and write velocity for locating read point
09/10/1991US5047619 High density data track layout for storage media
09/10/1991US5047312 Absorption in near infrared, laser light
09/10/1991US5046821 Optics support for an optical disk drive
09/10/1991US5046820 Objective lens driving apparatus
09/10/1991US5046819 Objective lens support having rotary and axial motions for use in an optical disk apparatus
09/05/1991WO1991013440A1 Membrane memory system
09/05/1991WO1991013435A1 Low temperature, aqueous ammonia treatment for polycarbonate substrates and optical information media employing same
09/05/1991WO1991013434A1 Process and solvent solution for coating a substrate with a naphthalocyanine chromophore
09/05/1991WO1991013105A1 Methacrylic resin molding material for optical information recording medium
1 ... 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 ... 1028