FR2464532A1 - Porteur d'enregistrement dans lequel de l'information est enregistree dans une structure d'information lisible par voie optique, ainsi que dispositif de lecture concu a cet effet - Google Patents
Porteur d'enregistrement dans lequel de l'information est enregistree dans une structure d'information lisible par voie optique, ainsi que dispositif de lecture concu a cet effet Download PDFInfo
- Publication number
- FR2464532A1 FR2464532A1 FR8019032A FR8019032A FR2464532A1 FR 2464532 A1 FR2464532 A1 FR 2464532A1 FR 8019032 A FR8019032 A FR 8019032A FR 8019032 A FR8019032 A FR 8019032A FR 2464532 A1 FR2464532 A1 FR 2464532A1
- Authority
- FR
- France
- Prior art keywords
- information
- domains
- reading
- track
- polarization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 230000010287 polarization Effects 0.000 claims description 81
- 230000005855 radiation Effects 0.000 claims description 77
- 230000036961 partial effect Effects 0.000 claims description 35
- 238000012549 training Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000011896 sensitive detection Methods 0.000 claims description 4
- 201000009310 astigmatism Diseases 0.000 claims description 3
- 238000010234 longitudinal analysis Methods 0.000 claims description 2
- 230000031877 prophase Effects 0.000 claims 1
- PWPJGUXAGUPAHP-UHFFFAOYSA-N lufenuron Chemical compound C1=C(Cl)C(OC(F)(F)C(C(F)(F)F)F)=CC(Cl)=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F PWPJGUXAGUPAHP-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 55
- 238000000034 method Methods 0.000 description 27
- 230000005540 biological transmission Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000000969 carrier Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7906576A NL7906576A (nl) | 1979-09-03 | 1979-09-03 | Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur, alsmede uitleesinrichting daarvoor. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2464532A1 true FR2464532A1 (fr) | 1981-03-06 |
| FR2464532B1 FR2464532B1 (en, 2012) | 1984-01-13 |
Family
ID=19833771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8019032A Granted FR2464532A1 (fr) | 1979-09-03 | 1980-09-03 | Porteur d'enregistrement dans lequel de l'information est enregistree dans une structure d'information lisible par voie optique, ainsi que dispositif de lecture concu a cet effet |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US4325135A (en, 2012) |
| JP (1) | JPS5637835A (en, 2012) |
| AT (1) | AT369578B (en, 2012) |
| AU (1) | AU537557B2 (en, 2012) |
| BR (1) | BR8005553A (en, 2012) |
| CA (1) | CA1150409A (en, 2012) |
| CH (1) | CH662667A5 (en, 2012) |
| DD (1) | DD153012A5 (en, 2012) |
| DE (1) | DE3032769A1 (en, 2012) |
| DK (1) | DK371780A (en, 2012) |
| ES (2) | ES494683A0 (en, 2012) |
| FR (1) | FR2464532A1 (en, 2012) |
| GB (1) | GB2058434B (en, 2012) |
| IT (1) | IT1132631B (en, 2012) |
| NL (1) | NL7906576A (en, 2012) |
| NZ (1) | NZ194817A (en, 2012) |
| SE (1) | SE445960B (en, 2012) |
| ZA (1) | ZA805225B (en, 2012) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2497990A1 (fr) * | 1981-01-12 | 1982-07-16 | Philips Nv | Porteur d'information presentant une structure d'information lisible par voie optique |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481501B1 (fr) * | 1980-04-25 | 1985-09-13 | Philips Nv | Porteur d'enregistrement comportant une structure d'information lisible par voie optique et dispositif pour la lecture d'un tel porteur d'enregistrement |
| JPS5733441A (en) | 1980-08-07 | 1982-02-23 | Matsushita Electric Ind Co Ltd | Optical information recorder and reproducer |
| US5119363A (en) * | 1980-12-17 | 1992-06-02 | Matsushita Electric Industrial Company, Ltd. | Optical disk having an index mark |
| JPS57105828A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Optical disk recording and reproducing system |
| JPS57111843A (en) * | 1980-12-27 | 1982-07-12 | Canon Inc | Vertical magnetic reading optical system |
| JPS57111838A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Optical information reader |
| FR2504765A1 (fr) * | 1981-04-27 | 1982-10-29 | Thomson Csf | Dispositif d'enregistrement-lecture comprenant un support mobile d'informations du type comportant une piste pregravee |
| US4385372A (en) * | 1981-05-01 | 1983-05-24 | Drexler Technology Corporation | Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information |
| JPS5862842A (ja) * | 1981-10-09 | 1983-04-14 | Matsushita Electric Ind Co Ltd | 光学的記録用円盤 |
| US4443870A (en) * | 1981-10-15 | 1984-04-17 | Burroughs Corporation | Optical memory system providing track following |
| EP0081138B1 (en) * | 1981-12-01 | 1987-10-21 | Matsushita Electric Industrial Co., Ltd. | Optical recording and reproducing disc |
| US4534021A (en) * | 1981-12-10 | 1985-08-06 | Discovision Associates | Angularly multiplexed optical recording medium |
| US4428075A (en) * | 1981-12-21 | 1984-01-24 | Burroughs Corporation | Methods of preformatting an optical disk |
| USRE32937E (en) * | 1982-03-19 | 1989-05-30 | Magnetic Peripherals, Inc. | Modulation system for optical recording |
| FR2528605B1 (fr) * | 1982-06-15 | 1987-11-20 | Thomson Csf | Procede et dispositif optique de focalisation d'un faisceau d'energie lumineuse sur un plan de reference d'un support d'information ainsi que ce support |
| EP0100995A3 (en) * | 1982-08-10 | 1985-10-16 | Kabushiki Kaisha Toshiba | Optical disk |
| JPS5936338A (ja) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | 光デイスク記録再生方法 |
| JPS5950043U (ja) * | 1982-09-24 | 1984-04-03 | オンキヨー株式会社 | 光学式ピツクアツプ |
| US4861699A (en) * | 1983-03-16 | 1989-08-29 | U.S. Philips Corporation | Method of making a master disk used in making optical readable information disks |
| GB8309447D0 (en) * | 1983-04-07 | 1983-05-11 | Combined Tech Corp Plc | Optical data storage |
| US4578788A (en) * | 1983-06-02 | 1986-03-25 | International Business Machines Corporation | High performance optical storage medium with separate mechanical servo tracks embedded within the medium |
| JPS60234232A (ja) * | 1984-05-07 | 1985-11-20 | Matsushita Electric Ind Co Ltd | 光デイスクおよびそのトラツキング方法 |
| JPH07107744B2 (ja) * | 1984-05-16 | 1995-11-15 | 松下電器産業株式会社 | 光ディスクの再生方法 |
| US4674070A (en) * | 1984-08-11 | 1987-06-16 | Victor Company Of Japan, Ltd. | Optical type disc with V-shaped groove and optical type reproducing apparatus therefor |
| US4858218A (en) * | 1984-09-12 | 1989-08-15 | Nikon Corporation | Optical recording medium and reproducing apparatus |
| NL8500152A (nl) * | 1985-01-22 | 1986-08-18 | Philips Nv | Registratiedragerlichaam voorzien van vooraf aangebrachte en optisch detekteerbare servospoorgedeelten en sektoradressen. |
| NL8500153A (nl) * | 1985-01-22 | 1986-08-18 | Philips Nv | Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur. |
| US4706235A (en) * | 1985-01-25 | 1987-11-10 | Storage Technology Partners 11 | Differential track recording |
| JPH0746429B2 (ja) * | 1985-06-21 | 1995-05-17 | オリンパス光学工業株式会社 | 光学式記録再生装置 |
| US4703465A (en) * | 1985-12-04 | 1987-10-27 | 1K Entertainment Center Ltd. | Method and apparatus for producing an audio magnetic tape recording from a preselected music library |
| US4860273A (en) * | 1986-07-31 | 1989-08-22 | Fuji Photo Film Co., Ltd. | Method of recording information and information recording medium employed for the same |
| JPS63104225A (ja) * | 1986-10-21 | 1988-05-09 | Csk Corp | 光記録媒体のトラツキング方式 |
| US4819218A (en) * | 1986-12-19 | 1989-04-04 | Eastman Kodak Company | Quasi-constant linear-velocity disk having corresponding radii of adjacent annular zones related by a rational number for distributing prerecorded indicia to form a coherent write clock signal |
| US4851931A (en) * | 1987-02-20 | 1989-07-25 | 1K Music International Ltd. | Method and apparatus for producing an audio magnetic tape recording at high speed from a preselected music library |
| KR0145722B1 (ko) * | 1987-07-07 | 1998-10-15 | 나가이 아쯔시 | 광정보기록매체 및 그 제조방법 |
| JP2735220B2 (ja) * | 1987-12-02 | 1998-04-02 | 株式会社日立製作所 | 非点収差を有する光束を用いた焦点ずれ検出方法及び光ディスク装置 |
| US5309416A (en) * | 1988-04-26 | 1994-05-03 | Canon Kabushiki Kaisha | Method and apparatus for initializing intermediate region between tracks on magnetooptical recording medium |
| JP2612329B2 (ja) * | 1988-12-27 | 1997-05-21 | シャープ株式会社 | 光メモリ素子並びに光メモリ再生装置 |
| EP0376678B1 (en) * | 1988-12-28 | 1995-03-01 | Canon Kabushiki Kaisha | Information recording medium |
| JPH03142717A (ja) * | 1989-10-27 | 1991-06-18 | Ricoh Co Ltd | 光ディスク |
| FR2661769B1 (fr) * | 1990-05-02 | 1995-04-21 | Thomson Csf | Systeme d'enregistrement optique de donnees sur disque, et procedes de lecture et ecriture correspondants. |
| JP3063805B2 (ja) * | 1991-02-25 | 2000-07-12 | オリンパス光学工業株式会社 | 光学式情報再生装置および記録媒体 |
| JPH0589477A (ja) * | 1991-09-27 | 1993-04-09 | Pioneer Electron Corp | 光デイスク |
| JP3002318B2 (ja) * | 1992-01-20 | 2000-01-24 | パイオニア株式会社 | 光ディスク及び光ディスク再生装置 |
| JP3067873B2 (ja) * | 1992-01-20 | 2000-07-24 | パイオニア株式会社 | 光ディスク及び光ディスク再生装置 |
| JPH0676387A (ja) * | 1992-08-31 | 1994-03-18 | Pioneer Electron Corp | 光ディスクおよび光ディスク再生装置 |
| US5748592A (en) * | 1996-02-07 | 1998-05-05 | Matsushita Electric Industrial Co., Ltd. | Disk drive apparatus and disk storage medium for high density recording |
| US7239602B2 (en) * | 1998-08-27 | 2007-07-03 | Ricoh Company, Ltd. | Optical information recording medium with a partition wall between an information tracks groove and a preformat pit encoding information therefor |
| US7352681B1 (en) * | 1998-10-26 | 2008-04-01 | Sony Corporation | Optical disc for data storage with invisible tracks and method of making same |
| US6549511B1 (en) * | 1999-02-24 | 2003-04-15 | Hewlett Packard Development Company, L.P. | Optical disk medium having features for radial tilt detection and apparatus for measuring radial tilt |
| WO2002029789A1 (en) * | 2000-10-03 | 2002-04-11 | Matsushita Electric Industrial Co., Ltd. | Multi-layer optical disk and method of producing mult-layer optical disk |
| US6940805B2 (en) * | 2001-10-23 | 2005-09-06 | Dragsholm Wireless Holdings Llc | Methods and apparatus for cross-talk and jitter reduction in multi-beam optical disks |
| WO2003050802A2 (en) * | 2001-12-12 | 2003-06-19 | Koninklijke Philips Electronics N.V. | Accommodating additional data on an optical data carrier disk |
| EP1658608B1 (en) * | 2003-08-20 | 2007-10-31 | Koninklijke Philips Electronics N.V. | Optical record carrier |
| US20050063293A1 (en) * | 2003-09-22 | 2005-03-24 | Smolovich Anatoly M. | Optical disk with tracking grooves similar to blazed grating |
| WO2006056947A1 (en) * | 2004-11-29 | 2006-06-01 | Koninklijke Philips Electronics N.V. | Two-dimensional encoded optical recording medium comprising elliptical data bits |
| DE102005016513B4 (de) * | 2005-03-08 | 2008-10-30 | Shanghai Hujing Electronic Technological Co., Ltd. | Nur lesbare optische Scheibe mit mehreren Ebenen und Verfahren zum Herstellen derselben |
| EP2172934A1 (en) * | 2008-10-06 | 2010-04-07 | Thomson Licensing | Optical storage medium comprising marks with different orientation, and respective apparatus for reading of data. |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314052A (en) * | 1963-04-12 | 1967-04-11 | Ibm | Light modulation system |
| US3348217A (en) * | 1964-05-01 | 1967-10-17 | Alvin A Snaper | Electro-optical computer or data processing system using superimposed polarizers |
| US3855426A (en) * | 1971-03-11 | 1974-12-17 | Philips Corp | Video disc recording and optical playback system therefor |
| US4084185A (en) * | 1974-02-12 | 1978-04-11 | U.S. Philips Corporation | Record carrier on which information is stored in an optically readable structure |
| DE2524473A1 (de) * | 1975-06-03 | 1976-12-23 | Ted Bildplatten | Verfahren und einrichtung zum aufzeichnen von signalen |
| DE2634243A1 (de) * | 1976-07-30 | 1978-02-02 | Bosch Gmbh Robert | System zur aufzeichnung und/oder wiedergabe von signalen mittels strahlen |
| US4161752A (en) * | 1977-06-28 | 1979-07-17 | International Business Machines Corporation | High density video disk having two pit depths |
| NL186205C (nl) * | 1977-12-17 | 1990-10-01 | Victor Company Of Japan | Inrichting voor het optisch registreren van signalen op een registratiemedium. |
| NL187413C (nl) * | 1978-03-16 | 1991-09-16 | Philips Nv | Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager. |
| NL7803517A (nl) * | 1978-04-03 | 1979-10-05 | Philips Nv | Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen. |
| NL7810462A (nl) * | 1978-10-19 | 1980-04-22 | Philips Nv | Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare stralingsreflekterende informatiestruktuur |
-
1979
- 1979-09-03 NL NL7906576A patent/NL7906576A/nl not_active Application Discontinuation
- 1979-10-22 US US06/087,276 patent/US4325135A/en not_active Expired - Lifetime
-
1980
- 1980-08-25 ZA ZA00805225A patent/ZA805225B/xx unknown
- 1980-08-25 CA CA000358910A patent/CA1150409A/en not_active Expired
- 1980-08-29 GB GB8028056A patent/GB2058434B/en not_active Expired
- 1980-08-30 DE DE19803032769 patent/DE3032769A1/de active Granted
- 1980-09-01 SE SE8006065A patent/SE445960B/sv not_active IP Right Cessation
- 1980-09-01 ES ES494683A patent/ES494683A0/es active Granted
- 1980-09-01 CH CH6582/80A patent/CH662667A5/de not_active IP Right Cessation
- 1980-09-01 NZ NZ194817A patent/NZ194817A/xx unknown
- 1980-09-01 DK DK371780A patent/DK371780A/da not_active Application Discontinuation
- 1980-09-01 BR BR8005553A patent/BR8005553A/pt unknown
- 1980-09-01 AU AU61923/80A patent/AU537557B2/en not_active Ceased
- 1980-09-03 FR FR8019032A patent/FR2464532A1/fr active Granted
- 1980-09-03 IT IT24434/80A patent/IT1132631B/it active
- 1980-09-03 JP JP12125780A patent/JPS5637835A/ja active Granted
- 1980-09-03 AT AT0443780A patent/AT369578B/de active
- 1980-09-03 DD DD80223697A patent/DD153012A5/xx unknown
- 1980-11-12 ES ES496774A patent/ES496774A0/es active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2497990A1 (fr) * | 1981-01-12 | 1982-07-16 | Philips Nv | Porteur d'information presentant une structure d'information lisible par voie optique |
Also Published As
| Publication number | Publication date |
|---|---|
| ES8105108A1 (es) | 1981-05-16 |
| DE3032769C2 (en, 2012) | 1989-09-14 |
| IT8024434A0 (it) | 1980-09-03 |
| SE445960B (sv) | 1986-07-28 |
| CH662667A5 (de) | 1987-10-15 |
| ES8201757A1 (es) | 1981-12-16 |
| ATA443780A (de) | 1982-05-15 |
| ES496774A0 (es) | 1981-12-16 |
| ES494683A0 (es) | 1981-05-16 |
| GB2058434B (en) | 1983-07-27 |
| BR8005553A (pt) | 1981-03-17 |
| GB2058434A (en) | 1981-04-08 |
| DK371780A (da) | 1981-03-04 |
| AU6192380A (en) | 1981-03-12 |
| ZA805225B (en) | 1982-04-28 |
| JPS5637835A (en) | 1981-04-11 |
| JPH0121543B2 (en, 2012) | 1989-04-21 |
| US4325135A (en) | 1982-04-13 |
| CA1150409A (en) | 1983-07-19 |
| AT369578B (de) | 1983-01-10 |
| NL7906576A (nl) | 1981-03-05 |
| DD153012A5 (de) | 1981-12-16 |
| AU537557B2 (en) | 1984-06-28 |
| NZ194817A (en) | 1983-09-02 |
| SE8006065L (sv) | 1981-03-04 |
| IT1132631B (it) | 1986-07-02 |
| FR2464532B1 (en, 2012) | 1984-01-13 |
| DE3032769A1 (de) | 1981-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |