| 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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| 10/21/1987 | EP0241924A2 Optically readable/writable card |
| 10/21/1987 | EP0241900A2 Optical disk substrate |
| 10/21/1987 | EP0241696A2 Naphtholactam dyes and optical recording carrier containing them |
| 10/21/1987 | EP0241558A1 Method of manufacturing gradient index lens |
| 10/21/1987 | EP0241537A1 Apparatus for recording and reading optical data marks on an optical medium |
| 10/21/1987 | CN87101879A Optical disc and disc drive writing data into or reading data out from |
| 10/20/1987 | US4701902 Automatic loading disc player |
| 10/20/1987 | US4701898 Method and apparatus for locating a selected track on a record disc |
| 10/20/1987 | US4701897 Optical disk apparatus |
| 10/20/1987 | US4701896 Interactive plural head laser disc system |
| 10/20/1987 | US4701880 Optical system for recording/reproducing information by means of a dielectric breakdown effected by photoswitching of a bias-voltage |
| 10/20/1987 | US4701770 Polycarbonate and phosphite ester heat and corrosion resistant |
| 10/20/1987 | US4701609 Semiconductor laser drive circuit with peak detection and control |
| 10/20/1987 | US4701604 Optical head |
| 10/20/1987 | US4701603 Focus control system for optical information recorder or player |
| 10/20/1987 | US4701032 Graded refractive index lens system |
| 10/20/1987 | US4701005 Light beam combining method and apparatus |
| 10/20/1987 | US4700840 Data card cassette |
| 10/20/1987 | CA1228423A1 Record carrier in which information can be written and which can be read by optical means |
| 10/20/1987 | CA1228422A1 Electro-optical device |
| 10/20/1987 | CA1228421A1 Apparatus for reproducing information from a disc- shaped optically readable record carrier |
| 10/20/1987 | CA1228417A2 System for playing back a programme recorded on a disc-shaped record carrier |
| 10/20/1987 | CA1228416A1 System for playing back a programme recorded on a disc-shaped record carrier |
| 10/14/1987 | EP0241372A1 Optical reading device for an optical-recording medium |
| 10/14/1987 | EP0241267A1 Optical recording medium |
| 10/14/1987 | EP0241081A1 Compact disc drive apparatus specifically designed for storage of digital data and/or mixture of audio information and digital data |
| 10/14/1987 | EP0241028A2 A photo-mask for use in manufacturing an optical memory disc, a method for making the photo-mask and a method for manufacturing the optical memory disc |
| 10/14/1987 | EP0241017A2 Optical memory medium and its information recording and erasing method and apparatus |
| 10/14/1987 | EP0241007A2 Optical head |
| 10/14/1987 | EP0240800A2 Optical recording disc |
| 10/14/1987 | EP0240752A1 Erasable optical disk having an improved optically transparent substrate |
| 10/14/1987 | EP0240696A2 Optical storage medium |
| 10/14/1987 | CN87100386A Optical disc duplicating unit and reproducing optical disc |
| 10/13/1987 | US4700336 Optical recording and playback apparatus using plural light spots |
| 10/13/1987 | US4700335 Method and apparatus for recording a continuous spiral information track with different track pitches |
| 10/13/1987 | US4700334 Tracking control with two servoloops for use in optical disc players |
| 10/13/1987 | US4700198 Process for recording information by irradiation of, an deposition on, a substrate |
| 10/13/1987 | US4700057 Light source with power stabilizer having temperature compensation |
| 10/13/1987 | US4700056 Objective lens focus initialization system |
| 10/13/1987 | US4699969 Fluorinated polymers and resins prepared therefrom |
| 10/13/1987 | CA1228162A1 Optical information reproducing apparatus |
| 10/07/1987 | EP0240041A1 Electro-optical device |
| 10/07/1987 | EP0239893A2 Cost-reduced optical memory disk |
| 10/07/1987 | CN87102377A Method of optically recording and erasing information |
| 10/07/1987 | CN87101892A Optical thermo method for recording sensing and erasing |
| 10/07/1987 | CN87101890A Recording and erasing information on optical record carrier; optical stores device therefor |
| 10/07/1987 | CN87101768A Optical stores apparatus |
| 10/07/1987 | CN87101611A Information erasing method |
| 10/06/1987 | US4698810 Data recording and reproducing system with error correction capability using ECC and CRC codes |
| 10/06/1987 | US4698798 Device for translating a slide |
| 10/06/1987 | US4698797 Optical type information reproducing device |
| 10/06/1987 | US4698796 Disk recording and/or reproducing apparatus with compensation for extraneous force during track jump |
| 10/06/1987 | US4698795 Tracking servo device |
| 10/06/1987 | US4698695 Recording disk data playback apparatus |
| 10/06/1987 | CA1227870A1 Information recording member |
| 10/06/1987 | CA1227869A1 Track jump control circuit for disk apparatus |
| 09/30/1987 | EP0239188A2 Preformatted optical recording medium and method of producing the same |
| 09/30/1987 | EP0239166A1 Method of optically recording and erasing information |
| 09/30/1987 | EP0239131A2 Tracking method for an optical recording medium |
| 09/30/1987 | EP0239130A2 Optical disc |
| 09/30/1987 | EP0239112A2 Recording medium |
| 09/30/1987 | EP0238759A2 Optical information writing method |
| 09/29/1987 | US4697258 Apparatus for enabling an autotrack circuit of an optical disc reading apparatus during the positioning of a read beam |
| 09/29/1987 | US4697256 Optical disc player with improved initial positioning operation |
| 09/29/1987 | US4697167 Sync pattern encoding system for data sectors written on a storage medium |
| 09/29/1987 | US4697074 Thermally improved photodetector having a roughened, recessed, raised or inclined light receiving surface |
| 09/29/1987 | US4696892 Optical information recording medium |
| 09/29/1987 | US4696566 Three-dimensional driving arrangement |
| 09/29/1987 | CA1227571A1 Optical recording by energy-induced fractionation and homogenization |
| 09/24/1987 | WO1987005737A1 Electrochromic data recording systems |
| 09/23/1987 | EP0238224A2 Optical head devices for use in disc players |
| 09/23/1987 | EP0238162A2 Optical information reproducing apparatus |
| 09/23/1987 | EP0238138A2 A multistage tracking system |
| 09/23/1987 | EP0238055A2 Optical recording apparatus |
| 09/23/1987 | EP0237945A2 Optical recording medium |
| 09/23/1987 | EP0237873A2 Optical recording medium |
| 09/23/1987 | EP0237783A2 Information recording medium |
| 09/23/1987 | EP0237682A1 Control system for optical information reproducing apparatus |
| 09/23/1987 | EP0237570A1 Laser recording and storage medium |
| 09/22/1987 | US4695994 Method and apparatus for varying laser intensity level |
| 09/22/1987 | US4695993 Optical information recording and reproducing apparatus and optical disc |
| 09/22/1987 | US4695992 Optical information recording-reproducing apparatus in which the relative position of a primary beam and secondary beams on recording medium is varied during recording and reproduction of information |
| 09/22/1987 | US4695991 Reading information stored in multiple frame format |
| 09/22/1987 | US4695989 Optical disc apparatus with selective track accessing using a correction scale value |
| 09/22/1987 | US4695714 Light source stabilizer with intensity and temperature control |
| 09/22/1987 | US4695528 Process for forming images using body with reversible fixable and temperature-variable light extinctions |
| 09/22/1987 | US4695510 Corrosion resistance |
| 09/22/1987 | US4695158 Focus error detector |
| 09/17/1987 | DE3608213A1 Use of a recording medium containing graphite as the storage layer, as a read-only memory information carrier |
| 09/17/1987 | DE3607932A1 Data store, and process for producing a data store and a probe for information input and removal as well as erasure |
| 09/16/1987 | EP0237181A1 Information recording medium and information write/read method using the same |
| 09/16/1987 | EP0236503A1 Optical head device |
| 09/16/1987 | EP0236357A1 Prerecorded dual strip data storage card |
| 09/16/1987 | EP0066590B1 Reading information stored in multiple frame format |
| 09/16/1987 | CN87101753A Liquid crystal disc memory |
| 09/15/1987 | US4694447 Optical signal recorders employing two lasers and methods therefor |
| 09/15/1987 | US4694443 Optical system for tracking an information recording medium |
| 09/15/1987 | US4694442 Disc reader with obliquity correction |
| 09/15/1987 | US4694441 Position control device for an optical reproduction system in an optical type disc reproduction device |
| 09/15/1987 | US4694163 Apparatus for scanning sheet-shaped recording medium with a bending roller |