| 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) |
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| 03/19/1985 | CA1184297A1 Record carrier having an optically readable information structure |
| 03/13/1985 | EP0133994A2 Optical pickup having a driving unit |
| 03/12/1985 | US4504939 Storage medium track pitch detector |
| 03/12/1985 | US4504938 Device for feedback controlling focus of an optical system in an information recording/reproducing apparatus |
| 03/12/1985 | US4504937 Optical information tracking apparatus |
| 03/12/1985 | US4504935 Electrodynamic focus and radial slide drive for an optical disc system |
| 03/12/1985 | US4504842 Radiation-sensitive record disc |
| 03/12/1985 | US4504548 Optical information recording medium for semiconductor laser |
| 03/12/1985 | CA1183950A1 Method for processing an information signal and means for carrying out the method |
| 03/12/1985 | CA1183949A1 Highly absorptive dye-containing underlayer for laser recording and data storage media |
| 03/12/1985 | CA1183948A1 Light modulating apparatus |
| 03/08/1985 | EP0113759A4 Optical disc write/read employing passive focus maintenance. |
| 03/06/1985 | EP0133790A1 Disc playback apparatus |
| 03/05/1985 | US4503531 Optical disc |
| 03/05/1985 | US4503324 Automatic focusing device |
| 03/05/1985 | US4503135 Medium for recording visual images and laser written data |
| 03/05/1985 | US4502762 Dual wavelength optical system |
| 03/05/1985 | CA1183605A1 Metallized information carrying discs |
| 03/05/1985 | CA1183604A1 Device for the optical scanning of a data medium |
| 02/26/1985 | US4502134 Optical disc signal reproducing system with tilt immunization |
| 02/26/1985 | US4502024 Pulse-width modulation circuit |
| 02/26/1985 | US4501876 Film-forming poly(conjugated polymethine-type)dye |
| 02/26/1985 | US4501808 Carbonium or sulfonium compound; optical recording media |
| 02/26/1985 | US4501493 Apparatus for detecting a position of an optical pickup |
| 02/26/1985 | CA1183262A1 System for transmitting digital information |
| 02/26/1985 | CA1183261A1 Focus initialization system for optical recording |
| 02/26/1985 | CA1183260A1 Partial beam focus sensing in an optical recording system |
| 02/26/1985 | CA1183259A1 Optical focussing device |
| 02/26/1985 | CA1183257A1 Apparatus for writing and/or reading information on a rotary information disc with the aid of a radiation beam |
| 02/26/1985 | CA1183256A1 Optical apparatus for writing and/or reading recording tracks by means of a radiation beam |
| 02/26/1985 | CA1183037A1 Recording and information record elements comprising oxoindolizine and oxoindolizinium dyes |
| 02/19/1985 | US4500889 Method for recording light information |
| 02/19/1985 | US4500777 High data capacity, scratch and dust resistant, infrared, read-write data card for automatic teller machines |
| 02/19/1985 | US4500486 Method for removal of a data carrier disk after molding |
| 02/19/1985 | US4500392 Electroforming chromium on an encoded nickel substrate |
| 02/19/1985 | CA1182916A1 Record carrier having an optically readable information structure and apparatus for reading said record carrier |
| 02/19/1985 | CA1182915A1 Optically readable information disk |
| 02/19/1985 | CA1182914A1 System for making a light beam scan a flat carrier with autofocusing |
| 02/19/1985 | CA1182913A1 Disc player |
| 02/19/1985 | CA1182912A1 Apparatus for reading and/or writing an optically readable information structure |
| 02/19/1985 | CA1182911A1 Optical recording apparatus |
| 02/19/1985 | CA1182910A1 Optical device for controlling a light beam |
| 02/19/1985 | CA1182909A1 Optical track scanner |
| 02/19/1985 | CA1182908A1 Optical track segment intercept apparatus |
| 02/14/1985 | WO1985000509A1 Signal generation system |
| 02/13/1985 | EP0133067A1 Method and device for the regeneration of reproduced data signals recorded on an optical disc |
| 02/13/1985 | EP0133027A1 Optical information reproducing apparatus |
| 02/12/1985 | US4499574 Record carrier with an optically readable information structure |
| 02/12/1985 | US4499572 Method for reading information or defect out of rotating disc |
| 02/12/1985 | US4499571 Optical disk system with laser safety arrangement |
| 02/12/1985 | US4499570 Dropout circuit arrangement for converting an information signal into a rectangular signal |
| 02/12/1985 | US4499569 Writing beam focus monitor |
| 02/12/1985 | US4499503 Video format signal recording and reproduction system |
| 02/12/1985 | US4499477 Cover assembly for optical recording medium |
| 02/12/1985 | US4499178 Record information at high sensitivity and read information by reflected light at high centrast |
| 02/12/1985 | US4499165 Compatability; stability; lasers; data processing |
| 02/12/1985 | CA1182561A1 Digital audio disc player |
| 02/06/1985 | EP0045806B1 Real-time optical disc and method for record and readout |
| 02/05/1985 | US4498175 Error correcting system |
| 02/05/1985 | US4498159 Track deviation detecting apparatus |
| 02/05/1985 | US4498158 Address data searching method for data recording medium reproducing device |
| 02/05/1985 | US4498110 Optical disc reproducing apparatus |
| 02/05/1985 | US4497534 Holographic optical head |
| 01/31/1985 | WO1985000457A1 Light pickup |
| 01/30/1985 | EP0132410A2 Information recording media |
| 01/29/1985 | US4497050 Method and device for writing a data block into a record carrier body |
| 01/29/1985 | US4497048 Technique for controlling tracking in an optical disc apparatus |
| 01/29/1985 | US4497047 Optical disc player with focus control during search mode |
| 01/29/1985 | US4496993 Rotary recording medium |
| 01/29/1985 | US4496957 Contains colloidal dispersion of a transition metal or oxide in a polymer binder |
| 01/29/1985 | US4495812 Method and device for balancing circular plate-shaped objects |
| 01/23/1985 | EP0132137A2 Disc for recording and reproducing optical information |
| 01/23/1985 | EP0131857A2 Method and apparatus for electroforming a stamper for producing a high-density information recording carrier |
| 01/22/1985 | US4495609 Recording and playback system |
| 01/22/1985 | US4495608 Device for rapidly moving an optical pick-up device in an optical reproducing apparatus to a desired position on a record disc |
| 01/22/1985 | US4495407 System for focusing an optical head onto a flat surface |
| 01/22/1985 | CA1181519A1 Apparatus for optically reproducing an information signal from a record disk |
| 01/22/1985 | CA1181518A1 Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information |
| 01/17/1985 | WO1985000238A1 Optical disc unit with flexible cover sheet |
| 01/17/1985 | WO1985000142A1 High energy beam sensitive glasses |
| 01/16/1985 | EP0131032A1 Recording medium for optical data storage. |
| 01/15/1985 | US4494226 Three beam optical memory system |
| 01/15/1985 | US4494225 Optical disc reproducing apparatus |
| 01/15/1985 | US4494154 Pickup control device and method for fast or slow reproduction in a disk reading system |
| 01/15/1985 | US4493887 Transparent support plates, ferrite recording and reflective layer |
| 01/15/1985 | CA1181174A1 Dual wavelength optical system |
| 01/15/1985 | CA1181173A1 Apparatus comprising an electrically controllable reflection device for detecting a radiation beam |
| 01/15/1985 | CA1181172A1 Apparatus for writing digital information in a disc- shaped optically readable record carrier |
| 01/09/1985 | EP0130900A1 Process for manufacturing optical discs by pressing, and discs made thereby |
| 01/09/1985 | EP0130831A2 Apparatus for detecting a focusing state of an optical system |
| 01/09/1985 | EP0130755A2 Method of producing optical recording medium |
| 01/09/1985 | EP0130698A1 Cost-reduced optical memory disk |
| 01/09/1985 | EP0130596A2 Support structure for electromechanical transducer |
| 01/09/1985 | EP0130399A1 Information recording medium |
| 01/09/1985 | EP0130391A2 A method of, and apparatus for, retrieval of information from an optical medium, and optical media |
| 01/09/1985 | EP0130364A2 Optical information storage medium |
| 01/09/1985 | EP0130329A1 Optical data storage medium |
| 01/08/1985 | US4492967 Optical recording disc |
| 01/08/1985 | US4492856 Apparatus for effecting focus control for use in optical disc player |
| 01/08/1985 | US4492750 Ablative infrared sensitive devices containing soluble naphthalocyanine dyes |