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)
10/1989
10/11/1989EP0336737A2 Optical information reading apparatus
10/11/1989EP0336706A2 Disk drive apparatus
10/11/1989EP0336687A2 Recording and reproducing optical disk device
10/11/1989EP0336616A2 Compatible optical disk
10/11/1989EP0336419A2 Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
10/11/1989EP0336328A2 Apparatus for optically recording and reproducing information
10/11/1989EP0336213A2 Silicium naphthalocyanines, and thin radiation-sensitive coatings containing these compounds
10/11/1989EP0336209A2 A reproducing apparatus for an optical recording medium
10/11/1989EP0185725B1 Optical information carrier with mossaic structure
10/11/1989CN1036283A Recording method and apparatus
10/10/1989US4873680 Apparatus and method for detecting and compensating for pit extension in an optical disk recording system
10/10/1989US4873679 Optical information recording disk and optical information recording disk apparatus
10/10/1989US4873678 Optical head and optical information processor using the same
10/10/1989US4873429 Optical pick-up head without pick-up of stray light
10/10/1989US4873332 Metal-containing indoaniline compound and optical recording medium employing the compound
10/10/1989US4873131 Optical recording medium
10/10/1989US4872743 Varifocal optical element
10/05/1989DE3908032A1 Disc cartridge with an optical disc
10/05/1989DE3809779A1 Moulding compositions of low birefringence
10/04/1989EP0335579A2 Photo-recording media and photo-recording method
10/04/1989EP0335486A2 Optical information recording method
10/04/1989EP0335469A2 Information-recording thin film and method for recording and reproducing information
10/04/1989EP0335465A2 Optical information recording disc and apparatus for driving the disc
10/04/1989EP0335372A2 Method of determining the oxidation resistance of the recording film of an information storage medium
10/04/1989EP0335302A2 Apparatus for the reversible storage of data
10/04/1989EP0335275A2 Information storage medium
10/04/1989EP0335236A2 Methine dyes and recording material containing these dyes
10/04/1989EP0335172A2 Mold for cast molding of substrate for information recording medium, method for preparing substrate for information recording medium and method for preparing information recording medium by use thereof
10/04/1989CN1036095A 光学记录载体 Optical record carrier
10/03/1989US4872156 Record carrier with a preformed information track for recording information with a radiation beam
10/03/1989US4872154 Method for recording indicia for indicating presence or absence of error in medium after error checking and apparatus therefor
10/03/1989US4872153 Detecting light spot movement direction for an optical disk
10/03/1989US4872152 Light spot position control system and method by sampled servo
10/03/1989US4872151 Compact disc player capable of playing plural selections recorded on a compact disc in a preselected sequence
10/03/1989US4871903 Apparatus for rapidly accessing a large data base employing an optical disc reading system with multiple heads and track position compensation means
10/03/1989US4871649 Optical recording medium and optical recording method using the same
10/03/1989US4871601 Optical information recording carrier
10/03/1989US4871404 Method for producing an optical information recording disk
10/03/1989CA1262186A1 Optical disc player with improved initial positioning operation
09/1989
09/27/1989EP0334601A2 Error detecting device for optical head
09/27/1989EP0334392A1 Optical scanning unit
09/27/1989EP0334340A2 Optically switching ferroelectric liquid crystal light valve
09/27/1989EP0334314A2 Method for producing purified polycarbonate resins
09/27/1989EP0333825A1 Information storage system
09/26/1989US4870636 Optical information processing apparatus and cleaning cartridge
09/26/1989US4870635 Precision measurement and positioning system for disk storage system
09/26/1989US4870634 Apparatus for recording and/or reproducing information data and a signal for synchronizing the same
09/26/1989US4870633 Apparatus for reproducing information recorded on a recording medium
09/26/1989US4870632 Optical head with astigmatic reflecting element
09/26/1989US4870631 Optical turntable system with reflected spot position detection
09/26/1989US4870524 Substrate for rigid disk storage media
09/26/1989US4870508 Record carrier body with an optical servo track and optical apparatus for writing and reading information from the carrier
09/26/1989US4870429 Optical foam-spacer disk assembly
09/26/1989CA1261468A1 Thermal design for reversible phase change optical storage media
09/26/1989CA1261467A1 Focus servomechanism control system of optical disc system having offset setting means
09/26/1989CA1261466A1 Light control circuit of optical disc system
09/26/1989CA1261212A1 Method for forming optically smooth polymeric layers
09/26/1989CA1260944A1 Oxachalcogenazole dyes, processes for their preparation, and articles containing these dyes
09/26/1989CA1260753A1 High energy beam sensitive glasses
09/26/1989CA1260138A1 Optical scanning unit
09/26/1989CA1259831A1 Hologram lens
09/21/1989WO1989008911A1 Optical recording device
09/21/1989DE3808380A1 Process for embossing fixed programs on glass discs and apparatus for carrying out the process
09/20/1989EP0333601A2 Objective lens support and positioning system
09/20/1989EP0333512A2 Device for supporting object lens in optical head
09/20/1989EP0333511A2 Optical pickup device
09/20/1989EP0333259A2 Electrodynamic actuator for optical recording system
09/20/1989EP0333232A2 Circuit for searching track on an optical disc
09/20/1989EP0333205A2 Optical recording medium
09/20/1989EP0333165A2 System for managing recording areas on writable type optical disk
09/20/1989EP0332708A1 Methods of accessing an optical recording track
09/20/1989EP0332689A1 Least squares method and apparatus for determining track eccentricity of a disk
09/20/1989EP0126155B1 Coated media for optical recording and method of fabricating
09/20/1989CN2044759U Information recorder
09/19/1989US4868836 Laser diode power control and modulator circuit
09/19/1989US4868821 Optical pickup which includes a single objective lens having magnification equal to or greater than 3 and equal to or smaller than 5
09/19/1989US4868820 Method for illuminating adjoining slants of an optical disk having a V-shaped groove
09/19/1989US4868819 Access control apparatus
09/19/1989US4868808 Optical disk arrangement with closed contours whose entire extent represents information
09/19/1989US4868807 Wavelength selective optical data storage system
09/19/1989US4868806 An information recording apparatus for recording a directory information unit on a single recording track of a recording medium based on the number of directory information units previously recorded in the single recording track
09/19/1989US4868804 Optical memory system which uses a different illumination mode when scanning reserved areas
09/19/1989US4868787 Wavelength selective optical data storage system
09/19/1989US4868683 Method of aligning objects by detecting a reference picture line therein which has an optically characteristic picture content
09/19/1989US4868377 Optical pickup for reading optical disk information provided with error detecting means by knife edge test
09/19/1989US4868373 Memory card comprising an optical memory disc and microelectronic memory component, and apparatus for transferring information to and from such card
09/19/1989US4867547 Mirror objective and optical arrangement comprising two mirror objectives
09/19/1989US4867408 Device for holding a mirror element for rearview mirror
09/19/1989CA1259699A1 Optical memory card reader
09/19/1989CA1259698A1 Laser access apparatus for optical disk drive
09/14/1989DE3906907A1 Record player with a fastening device for the signal pick-up
09/13/1989EP0332193A2 Signal reproducing circuitry and signal reproducing method for optical disc player
09/13/1989CN1035576A Optically readable record carrier of the inscribable type, apparatus for manufacturing such a record carrier, and apparatuses for recording and/or reading information on/from such a record carrier
09/13/1989CN1035575A Method of and apparatus for recording information signal
09/12/1989US4866697 Information memory medium
09/12/1989US4866696 Pre-formatted moth-eye type optical data storage member and method
09/12/1989US4866694 Read/write head for optical disks
09/12/1989US4866692 Method and apparatus for information recording and reproduction of a pit-shape-forming optical recording type
09/12/1989US4866691 AC amplifying RF signal processing circuit for optical disk player
09/12/1989US4866690 Vibration imparted focus search devices in an optical type disc playback device
1 ... 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 ... 1028