| 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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| 10/05/1988 | EP0285112A2 Optical recording element |
| 10/05/1988 | CN88101865A Optical disk reproducing device |
| 10/04/1988 | US4775970 Optical recording/reproducing apparatus for cards with reproduction light beam axes from a source and into a detector being parallel to the card |
| 10/04/1988 | US4775969 Optical disk storage format, method and apparatus for emulating a magnetic tape drive |
| 10/04/1988 | US4775968 Tracking error detecting system for optical head |
| 10/04/1988 | US4775967 Beam spot control device using a thin micro lens with an actuator |
| 10/04/1988 | US4775966 Optical information recording apparatus with eccentricity correction circuit |
| 10/04/1988 | US4775965 Optical system for recording, reproducing, and/or erasing information |
| 10/04/1988 | US4775568 Optical information storage medium |
| 10/04/1988 | US4775226 Method to create memory in a dispersed smectic system |
| 10/04/1988 | CA1242582A1 Laser recording film |
| 09/28/1988 | EP0284443A2 Optical disc drive systems |
| 09/28/1988 | EP0284423A2 An apparatus for counting a number of record tracks applicable to an access control system of a optical disc |
| 09/28/1988 | EP0284387A2 Master disk |
| 09/28/1988 | EP0284377A2 Optical disc recording and/or reproducing apparatus and focus control systems for such apparatus |
| 09/28/1988 | EP0284370A2 Naphthalocyanine derivatives and production processes thereof, as well as optical information recording media using the derivatives and production processes thereof |
| 09/28/1988 | EP0284273A1 Method of writing data on optical card |
| 09/28/1988 | EP0284212A2 Semiconductor lasers |
| 09/28/1988 | EP0284056A2 Method of optically recording information and apparatus therefor |
| 09/28/1988 | EP0284037A2 Modular data storage directories for large-capacity data storage units |
| 09/28/1988 | EP0283975A2 Compatible blends of polycarbonate and methyl methacrylate copolymers |
| 09/27/1988 | US4774702 Erasable optical memory employing a marmen alloy to effect phase-change erasing in a chalcogenide film |
| 09/27/1988 | US4774701 Data recording method with improved synchronization recovery |
| 09/27/1988 | US4774700 Information recording and reproducing apparatus with detection and management of defective sectors |
| 09/27/1988 | US4774699 Method and apparatus for positioning a read head to a selected track on a record disc |
| 09/27/1988 | US4774698 Optical disc recording and reproducing apparatus with improved servo control |
| 09/27/1988 | US4774613 Photosensor block |
| 09/27/1988 | US4774522 Method of recording a binary signal on an optically readable record carrier and apparatus for carrying out the method |
| 09/27/1988 | US4774400 Method and apparatus for correcting angular deviation of optical recording medium |
| 09/27/1988 | US4774170 Recording elements comprising write-once thin film alloy layers |
| 09/27/1988 | CA1242517A1 Liquid crystal information storage device |
| 09/22/1988 | WO1988007254A1 Disk recording/reproducing apparatus and disk recording/reproducing method |
| 09/21/1988 | EP0283304A2 Optical disc reproduction apparatus |
| 09/21/1988 | EP0283017A1 Information retrieval system with tracking error compensation |
| 09/21/1988 | EP0283002A2 Optical head |
| 09/21/1988 | EP0282997A2 Electronic file apparatus capable of storing code data into optical memory |
| 09/21/1988 | EP0282744A2 Magneto-optical disk |
| 09/21/1988 | EP0282611A1 Method and apparatus for writing information on processed photographic film |
| 09/20/1988 | US4773062 Optical information recording and reproducing apparatus including lens supporting mechanism employing cantilever springs |
| 09/20/1988 | US4773060 Optical information recording device |
| 09/20/1988 | US4773059 Information recording and reproducing apparatus having recording medium made of alloy which has at least two different crystalline structures in its solid state |
| 09/20/1988 | US4773055 Videodisc focusing and tracking servo |
| 09/20/1988 | US4773053 Optical system for guiding the read beam in a magneto-optical storage |
| 09/20/1988 | US4773052 Dual mode disk player/recorder |
| 09/20/1988 | US4772897 Optical recording medium |
| 09/20/1988 | US4772784 Semiconductor laser apparatus for optical head |
| 09/20/1988 | US4772505 Magnetic bubble memory element |
| 09/20/1988 | CA1242280A1 Information recording and reproducing apparatus |
| 09/20/1988 | CA1242273A1 Optical disk having formatted coarse servo tracks |
| 09/14/1988 | EP0282354A2 Focus error detecting apparatus |
| 09/14/1988 | EP0282288A2 Optical disk system |
| 09/14/1988 | EP0282181A2 Substituted phthalocyanine |
| 09/14/1988 | EP0282036A1 Apparatus for recording data into optical recording medium |
| 09/14/1988 | EP0282035A2 A flat type optical head for focusing a light beam onto an optical memory |
| 09/14/1988 | EP0281756A2 Holographic objective mirrors for optical storage |
| 09/14/1988 | CN88100791A Erasable optical disc and optical information recording and reproducing device |
| 09/14/1988 | CN86104490B Method and apparatus for recording and redisplaying information |
| 09/13/1988 | US4771415 Optical data storage and readout apparatus and head, using optical fibers between stationary and movable units |
| 09/13/1988 | US4771414 Optical pick-up apparatus |
| 09/13/1988 | US4771413 Optical recording and reproducing apparatus |
| 09/13/1988 | US4771412 Cooling device for optical information recording and reproducing apparatus |
| 09/13/1988 | US4771411 Device for scanning a radiation-reflecting information surface with optical radiation |
| 09/13/1988 | US4770975 Optical recording medium |
| 09/13/1988 | US4770923 Protection film structure for functional devices |
| 09/13/1988 | US4770507 For converting cross-sectional shape of a light beam |
| 09/07/1988 | WO1988006785A1 Disc recording apparatus |
| 09/07/1988 | EP0281408A2 Optical information recording and reproducing apparatus |
| 09/07/1988 | EP0258461A4 Optical information carrier and method for erasing the information of the same. |
| 09/06/1988 | US4769806 Disc information reproducing apparatus |
| 09/06/1988 | US4769805 Miniaturizable write/read head for an optical storage system |
| 09/06/1988 | US4769804 Optical data recording and reproducing apparatus with erase function diagnosis |
| 09/06/1988 | US4769803 Optical information recording and/or reproducing apparatus |
| 09/06/1988 | US4769802 Information recording medium disc and method and apparatus for recording/reproducing information using the disc |
| 09/06/1988 | US4769801 Focus servo control device for optical disks having servo offset error elimination |
| 09/06/1988 | US4769800 Positioning device for a sensing head of an optical data storage system |
| 09/06/1988 | US4769613 Digitalized amplitude detection circuit for analog input signal |
| 09/06/1988 | US4769311 Information recording member |
| 09/06/1988 | US4769307 Optical recording member |
| 09/06/1988 | CA1241744A1 Protective rim for storage discs |
| 09/06/1988 | CA1241741A1 Variable impedance contrast in data storage media |
| 09/06/1988 | CA1241727A1 Electric field gradient excited liquid crystal cell having bistability |
| 09/01/1988 | DE3705592A1 Device for the thin coating (lacquering) of disc-shaped substrates for electronic applications, for example circuit boards, Compact Discs, etc. |
| 08/31/1988 | EP0280548A2 Erasable optical disk and optical information recording/reproduction apparatus |
| 08/31/1988 | EP0280531A2 Optical information recording carrier |
| 08/31/1988 | EP0280366A1 Optical device comprising a holder accomodating an optical system |
| 08/31/1988 | EP0280208A2 Optical head |
| 08/31/1988 | EP0280028A2 An optical information disc |
| 08/31/1988 | CN87107463A Optical-mechanical storage device |
| 08/30/1988 | US4768184 Apparatus and method for minimizing magnification distortion in multi-track optical recording |
| 08/30/1988 | US4768183 Optical reproducing apparatus |
| 08/30/1988 | US4768182 Apparatus for monitoring optical path differences utilizing an etalon |
| 08/30/1988 | US4768181 Apparatus for determining defective or non-used sectors of an optical dish |
| 08/30/1988 | US4768180 Multistage tracking system |
| 08/30/1988 | US4768179 Optical disc store scanning device with a plurality of scanning units |
| 08/30/1988 | US4767921 Optical pickup device wherein the astigmatic converged beam spot is aligned along the dividing lines of the four-division photo-detector |
| 08/30/1988 | US4767696 Laser information recording medium having an improved recording layer |
| 08/30/1988 | US4767693 Optical information recording medium |
| 08/30/1988 | US4767571 For optical filters; metal complex with dimercaptobenzenes |
| 08/30/1988 | US4767187 Device for optically scanning an information carrier |
| 08/30/1988 | CA1241442A1 Apparatus for projecting a light beam onto an optically readable record carrier |