| 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) |
|---|
| 03/13/1991 | EP0416431A2 Recording medium for reversible optical recording as well as a reproducing method using this recording medium |
| 03/13/1991 | EP0416283A2 Optical head with tracking error detecting system |
| 03/13/1991 | EP0415940A1 A process facilitating the continuous playing of both sides of a disc without any interruption which can be detected by the user at the end of side 1, constant linear and/or angular speed, and a device applying said process |
| 03/13/1991 | EP0365552B1 Optical storage disk and method of its manufacture |
| 03/12/1991 | US4999827 Recording and/or reproducing apparatus for tape type optical recording medium |
| 03/12/1991 | US4999826 Focused-spot-position detection device for optical information recording and reproducing device |
| 03/12/1991 | US4999825 Recording/reading apparatus for inscribable record carrier and its manufacture |
| 03/12/1991 | US4999824 Magneto-optical memory device |
| 03/12/1991 | US4999810 Surface-enhanced raman optical data storage system |
| 03/12/1991 | US4999281 Cyanine dyes, heterocyclic sulfur compounds as singlet oxygen quenchers |
| 03/12/1991 | US4999278 Transmissively read optical recording medium |
| 03/12/1991 | US4998802 Objective lens driving device in an optical pickup |
| 03/12/1991 | CA1281424C Modular data storage directories for large-capacity data storage units |
| 03/12/1991 | CA1281178C Apparatus for coating substrate devices |
| 03/09/1991 | CA2024904A1 Optical memory element and sheet for use with the same |
| 03/07/1991 | WO1991003049A1 Seek control apparatus |
| 03/06/1991 | EP0415782A2 An optical disk apparatus |
| 03/06/1991 | EP0415729A2 Vinylphenyl compound, process for the production thereof, polymerizable composition containing same, and crosslinked polymer formed therefrom |
| 03/06/1991 | EP0415543A2 Half-height magneto-optic disk drive |
| 03/06/1991 | EP0415518A2 Signal recording apparatus and signal reproducing apparatus |
| 03/06/1991 | EP0415474A1 Device for optimising the operating range of an A/D converter |
| 03/06/1991 | EP0415289A2 Cutting apparatus for an optical disc |
| 03/06/1991 | EP0415230A2 Method for making edge faded holograms |
| 03/06/1991 | EP0414966A1 Optical disc recording medium having a microstructure-derived inhomogeneity or anisotropy |
| 03/05/1991 | USRE33548 Deviation correction apparatus for optical disc light beams |
| 03/05/1991 | US4998260 Method for correcting the path of a gas laser beam |
| 03/05/1991 | US4998239 Coating, encoding; compact discs |
| 03/05/1991 | US4998238 Apparatus with multiple heads adjusted for optimum performance at different regions of optical disk |
| 03/05/1991 | US4998237 Optical disc recording device having improved accuracy of pit formation |
| 03/05/1991 | US4998236 Apparatus for high density holographic optical data storage |
| 03/05/1991 | US4998235 Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits |
| 03/05/1991 | US4998234 Logarithmic servo error detection for optical disk drive |
| 03/05/1991 | US4998233 Acquiring focus in optical systems using a focus error signal and a laser drive signal |
| 03/05/1991 | US4998011 Flat plate focus sensing apparatus |
| 03/05/1991 | US4998009 Information recording method for recording data and directories in a plurality of blocks comprising divided recording areas |
| 03/05/1991 | US4997903 Bisphenol A endcapped with 4-cumyl phenol |
| 03/05/1991 | US4997805 Heat sensitive recording material containing chromogenic dicyanomethylenepyrazolinones |
| 03/05/1991 | US4997744 Process for coating a polycarbonate or polymethylmethacrylate containing base |
| 03/01/1991 | CA2024187A1 Vinylphenyl compound, process for the production thereof, polymerizable composition containing same, and crosslinked polymer formed therefrom |
| 02/27/1991 | EP0414579A2 A carriage servo unit in a disk player |
| 02/27/1991 | EP0414557A2 Optical disk recording/reproducing device |
| 02/27/1991 | EP0414518A2 Optical recording medium and method of and apparatus for recording and reproducing information therein |
| 02/27/1991 | EP0414517A2 Optical disc recording apparatus and method |
| 02/27/1991 | EP0414516A2 Optical recording medium |
| 02/27/1991 | EP0414476A1 Process for the preparation of photochromic spiropyran compounds |
| 02/27/1991 | EP0414450A2 Optical disc drive units |
| 02/27/1991 | EP0414429A2 Optical disc |
| 02/27/1991 | EP0414380A2 Optical recording and reproducing apparatus |
| 02/27/1991 | EP0414281A2 Portable laser diode scanning head |
| 02/27/1991 | EP0414258A2 Information recording medium and adhesive composition therefor |
| 02/27/1991 | EP0414071A2 Polyorganosiloxane-polycarbonate black-copolymers and their use for optical data recording |
| 02/27/1991 | EP0413962A1 Imaging screen for electrophoresis applications and apparatus for the visualisation of the image |
| 02/26/1991 | WO1991003046A1 Optical recording medium, data recording method and data reproducing method |
| 02/26/1991 | WO1991003045A1 Optical recording medium and information recording apparatus |
| 02/26/1991 | US4996682 Optical information medium having paired wobble pitts with continuous groove therebetween |
| 02/26/1991 | US4996678 Apparatus for rewriting an optical disc while updating its table of contents and without leaving gaps |
| 02/26/1991 | US4996169 Semiconductor laser assembly |
| 02/26/1991 | US4996089 Optical data recording medium |
| 02/26/1991 | US4995799 Optical disc manufacturing apparatus |
| 02/26/1991 | US4995705 Device, method and apparatus for optical modulation using ferroelectric polymer liquid crystals |
| 02/26/1991 | CA2024010A1 Information recording medium and adhesive composition therefor |
| 02/26/1991 | CA2023961A1 Optical recording medium |
| 02/26/1991 | CA1280823C Optical scanning unit |
| 02/23/1991 | CA2023697A1 Optical disc |
| 02/21/1991 | WO1991002406A1 Circuit arrangement for automatic gain control |
| 02/21/1991 | WO1991002352A1 Track seek recovery system and method |
| 02/20/1991 | EP0413564A2 Formation of polymeric metal oxide materials |
| 02/20/1991 | CN1049430A Circuit arrangement for automatic gain control |
| 02/19/1991 | US4995028 Coated media for optical recording, with soft/hard overcoat |
| 02/19/1991 | US4995026 Apparatus and method for encoding audio and lighting control data on the same optical disc |
| 02/19/1991 | US4995025 Spherical pivoting actuator for read/record head |
| 02/19/1991 | US4994658 A reader/writer |
| 02/19/1991 | US4994421 Transparent, uniform particle sizes |
| 02/19/1991 | US4994354 Optical recording media |
| 02/19/1991 | US4994352 Optical memory media |
| 02/19/1991 | US4994343 Stability |
| 02/19/1991 | US4994228 Method for releasing molded synthetic resin products from a mold |
| 02/19/1991 | US4993812 Semiconductor laser optical system |
| 02/13/1991 | EP0412909A2 Test apparatus for an optical recording disc |
| 02/13/1991 | EP0412800A2 Power supply circuit for laser diode in optical memory device |
| 02/13/1991 | EP0412738A2 Optical disk sector servo patterns |
| 02/13/1991 | EP0412716A2 Focus adjustment system for optical disk apparatus |
| 02/13/1991 | EP0412638A1 Optical information reading apparatus |
| 02/13/1991 | EP0412581A2 Apparatus for monitoring the focus condition of a writing beam |
| 02/13/1991 | EP0412556A2 Information recording and regenerating apparatus |
| 02/13/1991 | EP0412539A2 Thermal recording medium |
| 02/13/1991 | EP0412362A2 Optical recording medium |
| 02/13/1991 | CN1049240A Interactive optical disk |
| 02/12/1991 | US4993011 Optical recording apparatus with simultaneous erasing and recording |
| 02/12/1991 | US4992886 Method and apparatus for encoding data within the subcode channel of a compact disc or laser disc |
| 02/12/1991 | US4992885 Method of recording and reproducing audio information in correlation with divided screen graphics information |
| 02/12/1991 | US4992758 Power amplifying apparatus for optical disk apparatus |
| 02/12/1991 | US4992684 Linear motor and driving apparatus using the same |
| 02/12/1991 | US4992652 Focus error detecting circuit for disk player |
| 02/12/1991 | US4992300 Manufacturing method for a recording medium or a recording head |
| 02/12/1991 | US4991919 Optical head apparatus including concentric, periodic grating in a waveguide |
| 02/12/1991 | CA1280208C Method of and device for storing and reading digital information, at option protected or not by an error correcting code |
| 02/07/1991 | WO1991001553A1 Magneto-optical recording and/or reproducing device |
| 02/07/1991 | WO1991001551A1 Optical scanning device |
| 02/07/1991 | WO1991001550A1 Mount for an optical element |