Patents
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)
12/1997
12/09/1997US5696743 Information access apparatus for optical disc having a plurality of recoding layers
12/09/1997US5696742 Optical disk device for reproducing address information from wobbled groove
12/09/1997US5696368 Method of and apparatus for recording and reproducing optical information
12/09/1997US5695911 Containing phthalocyanine compound
12/09/1997US5695866 Optical recording medium
12/09/1997US5695843 Optical recording media
12/09/1997US5695561 Disk tray used with an apparatus for forming a protective film on an optical disk
12/08/1997WO1998027552A1 System for producing optical data carriers
12/04/1997WO1997045836A1 Optical disk with copy protection
12/04/1997WO1997045835A1 System for adjusting the spot size in an optical recording system
12/03/1997EP0810603A1 Multimedia optical disc corresponding to different rating systems of different countries, and method and apparatus for reproduction
12/03/1997EP0810598A2 Optical disk apparatus
12/03/1997EP0810593A1 Method of manufacture of a master disk for producing dies for optical discs carrying a marking, in particular anti-piracy, master disk, die, and the resulting optical disk
12/03/1997EP0810592A1 Process and device for bonding discs to one another
12/03/1997EP0810591A1 Optical disk
12/03/1997EP0810590A2 Optical data storage system with multiple rewritable phase-change recording layers
12/03/1997EP0810589A2 Optical pickup device with a plurality of laser couplers
12/03/1997EP0810588A2 Disk discrimination apparatus for an optical disk reproducing apparatus
12/03/1997EP0810587A2 Information recording method and apparatus
12/03/1997CN1166673A Disc recording and/or reproducing apparatus
12/03/1997CN1166671A Apparatus and method for reproducing optical diskprint head
12/02/1997US5694409 Device for driving a semiconductor laser by a plurality of driving elements
12/02/1997US5694387 Optical medium having a data pattern for detecting an upside-down insertion, and reproducing apparatus for use therewith
12/02/1997US5694386 Interpolating gain amplifier for information reproducing apparatus
12/02/1997US5694385 Optical pickup apparatus
12/02/1997US5694383 Decoder/encoder capable of controlling data reading/writing operations to memory in response to first/second clocks, reproducing apparatus equipped with encoder/decoder, and recording apparatus equipped with encoder
12/02/1997US5694382 Blank sector detection for optical disk drive
12/02/1997US5694379 Magneto-optical recording medium and recording apparatus therefor
12/02/1997US5694314 Optical disk drive unit
12/02/1997US5694258 Optical pickup and optical recording and reproduction apparatus
12/02/1997US5694249 Three-dimensional optical memory element and method of writing information therein
12/02/1997US5694247 Optical transmissive component with anti-reflection gratings
12/02/1997US5693451 Recording material for images or data
12/02/1997US5693396 Phthalocyanine compounds and optical recording media comprising them
11/1997
11/30/1997CA2206364A1 Process for the manufacture of a master disk for the production of optical disk pressing matrices bearing a marking, particularly of the anti-pirate type, a master disk, a pressing matrix and the optical disk obtained
11/27/1997WO1997044697A1 Reference beam auto-focus apparatus for modularized volume-holographic memory
11/27/1997WO1997044365A1 Photo-addressable substrates and photo-addressable side-group polymers with highly inducible double refraction
11/27/1997DE19620588A1 Polymer with high inducible birefringence undergoing very rapid permanent change on intensive irradiation
11/26/1997EP0809243A2 Optical disk having a large storage capacity
11/26/1997EP0809242A2 Optical recording and reproducing device
11/26/1997EP0809241A2 Optical storage apparatus
11/26/1997EP0809240A2 Optical recording medium
11/26/1997EP0809239A2 Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam
11/26/1997EP0808721A1 Dye-donor element for use in thermal transfer printing
11/26/1997EP0808498A1 Overcoat for optical recording medium
11/26/1997CN1166226A Multimedia optical disc correspounding to different rating systems of different countries, and method and appts. for production
11/26/1997CN1166223A Optical disk, optical recorder, optical producing device, encrypted communication system, and authorizing system for use of program
11/26/1997CN1166027A Object-lens driving device for optical pickup
11/26/1997CN1166026A Pickup adjusting apparatus of disk player
11/26/1997CN1166025A Pickup position and tilt adjusting apparatus of disk player
11/26/1997CN1166024A Optical storage apparatus
11/26/1997CN1166023A Method for winding coil capable of increasing high frequency band sensitivity
11/25/1997USRE35670 Flexible information storing disk apparatus having laminar air flow
11/25/1997US5692113 Data reproduction system for reproducing and outputting multimedia information using a printer
11/25/1997US5691972 Multimedia optical disc which conforms to the motion picture rating systems in a variety of countries and a reproducing device for said disc
11/25/1997US5691971 Multiple recording layer focusing of a light spot with an addition of zoom lens
11/25/1997US5691970 Optical pickup for high-density recording/reproducing
11/25/1997US5691968 Optical disk unit
11/25/1997US5691967 Recording or reproducing apparatus having a spindle servo control runaway prevent feature
11/25/1997US5691965 Actuator comprising a rotatable magnet body; actuator unit comprising the actuator and a control system; magneto-optical device comprising the actuator, and scanner comprising the actuator
11/25/1997US5691830 Holographic optical system including waveplate and aliasing suppression filter
11/25/1997US5691098 Laser-Induced mass transfer imaging materials utilizing diazo compounds
11/25/1997US5691091 Optical storage process
11/25/1997US5691072 Magneto-optical recording medium and method of reproducing information recorded on such medium
11/25/1997US5690974 Metal mold for molding runnerless product
11/20/1997WO1997043760A1 Gluing nozzle, especially for gluing dvd-discs
11/20/1997WO1997043759A1 Photorefractive composite
11/20/1997WO1997043669A1 Position feedback system for volume holographic storage media
11/20/1997WO1997043112A1 Optical recording medium and method for eliminating berm buildup
11/20/1997WO1997043111A1 Device for bending a flat, round disc element
11/20/1997WO1997043100A1 Mold for making disc substrate, process for producing mold and disc substrate
11/20/1997DE19708796A1 Difference determination method between Sub Q code and CD ROM header
11/20/1997CA2254118A1 Photorefractive composite
11/20/1997CA2226852A1 Position feedback for volume holographic storage media
11/19/1997EP0807934A1 Means for protecting reading and/or writing device
11/19/1997EP0807929A1 Optical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk production
11/19/1997EP0807928A2 Optical pickup apparatus and objective lens for optical pickup apparatus
11/19/1997EP0807927A2 Disc reproducing method and apparatus
11/19/1997EP0807926A1 Multiple layer disk reproducing apparatus, and apparatus for reproducing information record medium
11/19/1997EP0807814A1 Two-photon laser scanning microscopy
11/19/1997EP0807346A1 Cd-prom
11/19/1997CN1165575A Optical multilayer informationc arrier
11/19/1997CN1165379A Unique identifier for optical media
11/19/1997CN1165378A Optical pickup transport mechanism
11/19/1997CN1165377A Optical pickup moving mechanism
11/19/1997CN1165374A Optical disc and disc cartridge
11/19/1997CN1165373A High density optical disk
11/19/1997CN1165372A Surface laser diode package having optical power monitoring function
11/19/1997CN1165371A Optical pickup and opto-magnetic signal reproducing apparatus
11/19/1997CN1165370A Objective lens
11/19/1997CN1165369A Objective lens driving device and method for manufacturing the same
11/19/1997CN1165368A Motor control apparatus, motor control method, disk apparatus and disk access method
11/19/1997CN1165367A Disc discriminator of optical disc player system
11/18/1997US5689497 Optical registration medium with dual information layer
11/18/1997US5689496 Optical recording medium having spiral tracks formed with a turning angle of more than 360°
11/18/1997US5689495 High density optical disc and optical disc player
11/18/1997US5689493 A super-resolution optical head with signal corrective circuit
11/18/1997US5689492 Assembly used for precisely positioning the component parts of a laser detector grating unit (LDGU)
11/18/1997US5689491 Optical write/read device and an information recording media
11/18/1997US5689488 Optical disc system, optical disc and recording method