| 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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| 06/07/1988 | US4750164 Optical system driving device |
| 06/07/1988 | US4750163 Pick-up head abnormality detector for optical recording/reproducing apparatus |
| 06/07/1988 | US4750162 Optical tracking system utilizing three photo-detectors |
| 06/07/1988 | US4750161 Apparatus for recording and reproducing optical information |
| 06/07/1988 | US4750152 Optical read/write device |
| 06/07/1988 | US4750055 Record carrier for storage of video information |
| 06/07/1988 | US4749849 Device for determining the position of a radiation beam |
| 06/07/1988 | US4749749 Compatible mixtures of a polycarbonate and a methacrylate copolymer |
| 06/07/1988 | CA1237813A1 Start-control method and circuit for optical disc play-back system |
| 06/07/1988 | CA1237812A1 Recording and reproduction apparatus |
| 06/07/1988 | CA1237778A1 Optical modulation system |
| 06/02/1988 | WO1988004069A1 High contrast optical memory tape |
| 06/01/1988 | EP0269387A1 Method and apparatus for recording signals on an optical record medium and optical record medium |
| 06/01/1988 | EP0269366A2 Cross-linkable casting compositions |
| 06/01/1988 | EP0269252A2 Optical recording medium and method of manufacturing the same |
| 06/01/1988 | CN87107886A Apparatus for writing and/or reading information in/from disc shaped record carrier |
| 06/01/1988 | CN85101681B Apparatus of recording information into and reading it out of a reflective recording disc |
| 05/31/1988 | US4748611 Information recording medium and method for reproducing the same |
| 05/31/1988 | US4748610 Servo system in data reading apparatus |
| 05/31/1988 | US4748609 Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset |
| 05/31/1988 | US4748608 Servo apparatus for tracking and rotational speed control |
| 05/31/1988 | US4748607 Track accessing system using an integrated velocity signal |
| 05/31/1988 | US4747668 Optical scanning unit |
| 05/31/1988 | CA1237279A1 Information medium adapted to be written by thermo- optical means and method of manufacturing same |
| 05/25/1988 | EP0268482A1 Cardlike optical recording medium |
| 05/25/1988 | EP0268454A2 Optical disk recording and reproducing device |
| 05/25/1988 | EP0268357A2 Optical system with grating lens assembly |
| 05/25/1988 | EP0268352A1 Method of manufacturing an optical recording medium |
| 05/25/1988 | EP0268321A1 Apparatus for writing and/or reading information in/from a disc shaped record carrier |
| 05/25/1988 | EP0268311A1 Electro-optical scanning device |
| 05/24/1988 | US4747093 Disc-shaped information carrier and method of manufacturing it |
| 05/24/1988 | US4747091 Semiconductor laser drive device |
| 05/24/1988 | US4747090 Integral pickup for an optical digital disc using saw deflection and lenses |
| 05/24/1988 | US4747089 Method and apparatus for focusing servo control |
| 05/24/1988 | US4746991 Recording characteristic evaluation of a recording medium with a time sequence of test signals |
| 05/24/1988 | US4745878 Vapor masking device |
| 05/24/1988 | CA1237195A1 Scanning optical card reader |
| 05/19/1988 | WO1988003671A1 Process and circuit for automatic setting of the gain in a control circuit |
| 05/19/1988 | WO1988003667A1 Recording media incorporating complex metal azide explosives and dye-azide explosives |
| 05/19/1988 | WO1988003666A1 Recording media incorporating explosive compounds |
| 05/19/1988 | DE3638838A1 Recording carrier and process for writing, reading and erasing information in this carrier |
| 05/19/1988 | DE3638831A1 Verfahren und schaltungsanordnung zur automatischen einstellung der regelverstaerkung in einem regelkreis Method and circuit arrangement for automatic adjustment of regelverstaerkung in a loop |
| 05/17/1988 | US4745609 Stabilized laser device |
| 05/17/1988 | US4745589 Objective lens actuator having movements restricting control means for an optical head |
| 05/17/1988 | US4745588 Tracking control apparatus |
| 05/17/1988 | US4745587 Eccentricity correction during optical head accessing of a desired track |
| 05/17/1988 | US4745484 Method and apparatus for stepped imaging in reading data |
| 05/17/1988 | US4745417 For writing optical information |
| 05/17/1988 | US4745268 Personal information card system |
| 05/17/1988 | CA1236693A1 Information recording medium |
| 05/11/1988 | EP0267036A2 Waveguide type optical head |
| 05/11/1988 | EP0266841A1 An optical data recording device |
| 05/11/1988 | EP0266833A1 Method of recording a binary signal on an optically readable record carrier and apparatus for carrying out the method |
| 05/11/1988 | EP0266747A2 Information memory medium |
| 05/11/1988 | EP0266746A2 Information memory medium |
| 05/11/1988 | EP0111006B1 Optical head control signal generator |
| 05/10/1988 | US4744074 Disk-type recording medium |
| 05/10/1988 | US4744073 Recording/reproducing optical system utilizing semiconductor laser light source and anamorphic imaging element |
| 05/10/1988 | US4744071 Optical head in a device for recording and reading a data carrier |
| 05/10/1988 | US4744070 Optical disk and method of tracking the same |
| 05/10/1988 | US4744069 Optical disc apparatus with access system having object lens control |
| 05/10/1988 | US4744055 Erasure means and data storage system incorporating improved erasure means |
| 05/10/1988 | US4743774 Method and apparatus for optical detection of information |
| 05/10/1988 | US4743745 Optical memory card reader |
| 05/10/1988 | US4743526 Alloy having variable spectral reflectance and information recording material making use of the same |
| 05/10/1988 | US4743409 Process for preparing a substrate for optical recording media |
| 05/10/1988 | US4743091 Two dimensional laser diode array |
| 05/10/1988 | CA1236572A1 Machine readable markers for cartesian information storage media |
| 05/10/1988 | CA1236297A1 Recording and information record elements comprising telluropyrylium dyes |
| 05/05/1988 | WO1988003311A1 Flexible optical information recording medium and method of producing the same |
| 05/05/1988 | WO1988003310A1 Draw type optical recording medium |
| 05/05/1988 | WO1988003309A1 Ray scanning system |
| 05/05/1988 | WO1988003293A1 Transmissively read quad density otpical data system |
| 05/04/1988 | EP0266279A1 Solid polymeric substrate for optical discs, and optical discs manufactured from said substrate |
| 05/04/1988 | EP0266226A2 Address search method for optical disk player |
| 05/04/1988 | EP0266164A2 Dye mixtures and optical recording elements containing same |
| 05/04/1988 | EP0266005A2 Mirror objective and optical arrangement comprising two mirror objectives |
| 05/04/1988 | EP0265984A1 Optically readable record carrier for recording information, method and apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier |
| 05/04/1988 | EP0265971A1 Method for optical information recording |
| 05/04/1988 | EP0265849A2 Optical recording/reproducing method and apparatus |
| 05/04/1988 | EP0265695A2 Recording apparatus |
| 05/04/1988 | EP0265641A2 Coated media for optical recording |
| 05/03/1988 | US4742508 Disk driving system |
| 05/03/1988 | US4742507 Optical information recording and reproducing apparatus having defective-sector marking means |
| 05/03/1988 | US4742506 Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion |
| 05/03/1988 | US4742505 Optical information recording and reproducing memory system |
| 05/03/1988 | US4742401 Opto-electronic scan head which has a housing portion and a housing member that are coupled together by first and second guide rods so as to allow relative motion therebetween |
| 05/03/1988 | US4742219 Apparatus for detecting the focusing state and positional accuracy of a light beam directed onto an optical disk tracking guide in an optical read/write system |
| 05/03/1988 | US4742218 Focus error detection apparatus utilizing focusing an front and rear sides of focal planes |
| 05/03/1988 | US4742214 Optical card reader |
| 05/03/1988 | US4741952 Contains non-magnetic alumina-skica based minerals; stability, durability, smoothness |
| 05/03/1988 | US4741918 Rotary applicator deposits thin film of dry particles on substrate; rubbing |
| 05/03/1988 | CA1235901A1 High contrast thin film optical recording medium |
| 04/28/1988 | DE3636157A1 New methylenedithiolenequinone dyes, and thin, radiation-sensitive coating films containing them |
| 04/27/1988 | EP0265287A2 Slider servo device |
| 04/27/1988 | EP0265274A2 Card including rotatory system optical recording medium |
| 04/27/1988 | EP0265260A2 Method for erasing a recording in a memory using a photochemical hole burning material |
| 04/27/1988 | EP0265204A2 Protective layer for optical information recording medium |
| 04/27/1988 | EP0265138A2 Position control system for information storage system |
| 04/27/1988 | EP0264920A2 Tracking method and apparatus for optical recording medium |