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)
11/1994
11/08/1994	US5362536 Exposure to a thermally-generated acid becomes an absorption dye; light reflecting layer
11/08/1994	US5361694 Interchangeable printhead printing machine
11/03/1994	DE4314387A1 Recordable CD-based optical mass store
11/02/1994	EP0622793A2 Apparatus for reproducing optical recording medium and method of reproducing the same
11/02/1994	EP0622790A2 Selectively modifiable optical storage medium and production method
11/02/1994	EP0622789A1 Sheet-like structures containing side chain polymers
11/02/1994	EP0622788A1 Optical pickup apparatus
11/02/1994	EP0622787A1 Disc recording/reproducing system
11/02/1994	EP0486538B1 Circuit arrangement for automatic gain control
11/02/1994	CN1094530A 条形码矩阵式电视日历 Matrix barcodes TV calendar
11/01/1994	USRE34769 Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit
11/01/1994	US5361327 Waveform equalizer apparatus formed of neural network, and method of designing same
11/01/1994	US5361247 Information recording and reproducing device with reproduction and automatic gain control circuit
11/01/1994	US5361246 Optical information processing apparatus provided with means for detecting abnormality of focusing servo with a predetermined sensitivity
11/01/1994	US5361245 Optical signal processing apparatus for detecting the direction of movement of an optical reading device relative to an optical disk
11/01/1994	US5361244 Optical head and information recording apparatus
11/01/1994	US5361243 Optical disk apparatus having laminated diaphragm springs structure
11/01/1994	US5361136 Apparatus for detecting crosstalk in reproduced high-vision signal
11/01/1994	US5360970 Apparatus and method for a single return path signal sensor system
11/01/1994	US5360968 "Consensus sync" data-sampling systems and methods
11/01/1994	US5360699 Spiropyran compounds
11/01/1994	US5360652 Optical recording disc
11/01/1994	US5360651 Optical disk having R/W and worm area
11/01/1994	CA2022126C Holographic memory read by a laser array
11/01/1994	CA2014172C Track access control system in rotating disc devices with eccentricity correction
10/1994
10/27/1994	WO1994024665A1 Disk-shaped optical storage medium and process for producing the same
10/27/1994	DE4414107A1 Corrosion-resistant silver@-magnesium@ alloy used in sputter coating
10/27/1994	DE4313119A1 Carrier for digitised sound signals and player for such a carrier
10/26/1994	EP0621591A2 Optical recording medium and device for reproducing the same
10/26/1994	EP0621590A1 Optical information recording and/or reproducing apparatus
10/26/1994	EP0621589A1 Method of deriving a quality signal from a read signal, as well as a recording device and a reading device in which such a method is used
10/26/1994	EP0621588A1 Optical disk recording device
10/26/1994	EP0621587A1 Device for driving optical part
10/26/1994	EP0621586A1 Optical disk drive
10/26/1994	EP0621529A2 Method and apparatus for recording data on a rewritable optical disk
10/26/1994	EP0621297A2 Polycarbonate copolymer of spirobisindan and bisphenol-A, method of preparing such a copolymer and optical components of such a copolymer
10/26/1994	EP0621236A1 Carbon fluoride particles, process for producing the same, and use thereof
10/26/1994	EP0620822A1 Hybridization of polynucleotides conjugated with chromophores and fluorophores to generate donor-to-donor energy transfer system
10/26/1994	EP0579638B1 Polyketomethine dyes
10/26/1994	EP0409987B1 Fabrication method of mask for rom type optical recording card and inspection method of mask
10/25/1994	US5359591 Optical disc having information pits in form of plurality of fragments arranged in symmetrical pattern
10/25/1994	US5359589 Optical information recording and reproducing apparatus having functions for adjusting intensity of light beam
10/25/1994	US5359588 Optical recording/reproducing apparatus
10/25/1994	US5359585 Information reproducing apparatus with variable digitizing threshold
10/25/1994	US5359583 Method for preventing erroneous recording in compact disc player
10/25/1994	US5359581 Detector for moving velocity of light beam spot
10/25/1994	US5359565 Optical memory
10/25/1994	US5359459 Optical system driving apparatus
10/25/1994	US5359056 Phthalocyanine compounds, production method thereof, and near infrared ray absorption materials containing the same
10/25/1994	US5358833 Heating crystalline phthalocyanine compound(s) in an organic solvent suitable for heat treatment
10/25/1994	US5358759 A protective coatings through which the laser beam able to transmit, write the information codes
10/25/1994	US5357991 Gas phase semiconductor processor with liquid phase mixing
10/25/1994	CA2019376C Optical memory device
10/25/1994	CA2014535C Apparatus for recording and reproducing information on and from an optical disk
10/25/1994	CA2014534C Optical head
10/25/1994	CA1332759C Optical disk recording and reproducing device
10/20/1994	DE4410015A1 Injection mould
10/19/1994	EP0620550A2 Optical head apparatus
10/19/1994	EP0620549A1 Optical data storage media
10/19/1994	EP0620548A1 Recording and/or reproducing apparatus and method of controlling same
10/19/1994	EP0620478A1 Audio signal recording for motion picture films
10/19/1994	CN1093731A Homeotropically oriented liquid crystalline polymer film comprising dichroic dye
10/19/1994	CN1026277C Optical scanning device, mirror objective suitable for use in said device and optical write and/or read apparatus provided with said device
10/19/1994	CN1026276C Recording and/or reproducing apparatus for optical disk
10/18/1994	US5357500 Miniaturized disc player
10/18/1994	US5357499 Optical disk and optical disk reproducing apparatus
10/18/1994	US5357498 Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated
10/18/1994	US5357497 Method for detecting defects on magneto-optic recording medium
10/18/1994	US5357496 Optical disk drive focus servo control system with focus servo being turned off or having gain reduced after tracking servo has been off a predetermined time period
10/18/1994	US5357304 Image development apparatus and method
10/18/1994	US5357150 Defect tolerant envelope follower
10/18/1994	US5357102 Tilted light detection device for preventing undesirable retro-reflection
10/18/1994	US5356685 Leuco dye that, when activated, becomes an absorbing dye
10/18/1994	US5356684 Optical recording medium and method of manufacturing thereof
10/18/1994	CA2018314C Optical head device
10/13/1994	WO1994023430A1 Erasable optical media
10/13/1994	WO1994023429A1 Erasable optical recording media
10/13/1994	WO1994023428A1 Disklike recording medium, apparatus for recording data on disk, and apparatus for reproducing data from disk
10/13/1994	WO1994023343A1 Method and apparatus for process control
10/13/1994	WO1994023334A1 Switchable lens
10/13/1994	WO1994022977A1 Liquid crystal polymers
10/13/1994	WO1994022960A1 Method of preparing naphthalocyanines
10/13/1994	DE4411872A1 Optical recording medium and also a device and method for recording and reproducing information on or from the same
10/13/1994	DE4411855A1 Video disc device and recording and reading method for a video disc which uses the method
10/13/1994	CA2159100A1 Method and apparatus for process control
10/13/1994	CA2129232A1 Erasable optical media
10/12/1994	EP0619576A2 Optical recording medium and process for manufacturing it
10/12/1994	EP0619575A1 Writing beam focus monitor
10/12/1994	EP0619345A1 Phthalocyanine compound and optical recording medium containing it
10/11/1994	US5355385 Laser diode device having a protective layer on its light-emitting end face
10/11/1994	US5355361 Optical pickup apparatus for reproducing signals recorded on an optical disk
10/11/1994	US5355360 Semiconductor laser controlling apparatus
10/11/1994	US5355357 Disc player and disc loading device
10/11/1994	US5355355 Electronic file apparatus capable of storing code data and image data into optical memory
10/11/1994	US5354869 3,6-bis-(2'-methoxyphenyl)-2,5-dihydro-2,5-dimethyl-pyrrolo-(3,4-c)-pyrrole-1,4-dione compound
10/11/1994	US5354590 Optical recording medium
10/11/1994	US5354514 Near infrared absorbing composition and material and product containing same
10/11/1994	US5354380 Apparatus for the insertion and removal of a mask through the airlock of a vacuum coating apparatus
10/11/1994	CA1332467C Optical recording media and information recording and reproducing units
10/11/1994	CA1332466C Optical information recording medium

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