NL192279C - Optisch registreermedium en optische registratiedrager. - Google Patents
Optisch registreermedium en optische registratiedrager. Download PDFInfo
- Publication number
- NL192279C NL192279C NL8203213A NL8203213A NL192279C NL 192279 C NL192279 C NL 192279C NL 8203213 A NL8203213 A NL 8203213A NL 8203213 A NL8203213 A NL 8203213A NL 192279 C NL192279 C NL 192279C
- Authority
- NL
- Netherlands
- Prior art keywords
- layer
- light
- tracking
- regions
- reflectivity
- Prior art date
Links
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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Read Only Memory (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29316981A | 1981-08-17 | 1981-08-17 | |
US29316981 | 1981-08-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL8203213A NL8203213A (nl) | 1983-03-16 |
NL192279B NL192279B (nl) | 1996-12-02 |
NL192279C true NL192279C (nl) | 1997-04-03 |
Family
ID=23127956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8203213A NL192279C (nl) | 1981-08-17 | 1982-08-16 | Optisch registreermedium en optische registratiedrager. |
Country Status (5)
Country | Link |
---|---|
JP (2) | JPS5838193A (fr) |
DE (1) | DE3229573A1 (fr) |
FR (1) | FR2531798B1 (fr) |
GB (1) | GB2105094B (fr) |
NL (1) | NL192279C (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4451915A (en) * | 1982-04-15 | 1984-05-29 | Burroughs Corporation | Optical storage system employing a multi-layer optical medium |
GB2121227A (en) * | 1982-05-11 | 1983-12-14 | Nigel Geoffrey Ley | Optical memory recording disc |
JPS5990248A (ja) * | 1982-11-15 | 1984-05-24 | Sony Corp | 情報記録媒体 |
GB8309447D0 (en) * | 1983-04-07 | 1983-05-11 | Combined Tech Corp Plc | Optical data storage |
NL8301632A (nl) * | 1983-05-09 | 1984-12-03 | Philips Nv | Registratiedrager waarin langs optische weg informatie kan worden ingeschreven en uitgelezen. |
US4544443A (en) * | 1983-05-13 | 1985-10-01 | Shap Kabushiki Kaisha | Method for manufacturing an optical memory element |
US4673602A (en) * | 1984-06-13 | 1987-06-16 | Sumitomo Bakelite Company Limited | Composite substrate plate for magnetic or optical disk and process for production thereof |
JPH02177030A (ja) * | 1988-12-27 | 1990-07-10 | Sharp Corp | 光メモリ素子 |
US5099469A (en) * | 1990-02-20 | 1992-03-24 | Del Mar Avionics | Process for manufacturing an optical disc master |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4069487A (en) * | 1974-12-26 | 1978-01-17 | Canon Kabushiki Kaisha | Recording member and process for recording |
JPS5247740A (en) * | 1975-10-14 | 1977-04-15 | Canon Inc | Reproducing process |
JPS52138101A (en) * | 1976-05-14 | 1977-11-18 | Hitachi Ltd | Formation of a concavo-convex image |
FR2365854A1 (fr) * | 1976-09-24 | 1978-04-21 | Thomson Brandt | Procede de fabrication d'un support d'information enregistrable et lisible optiquement et support obtenu par un tel procede |
US4216501A (en) * | 1977-03-28 | 1980-08-05 | Rca Corporation | Optical anti-reflective information record |
US4285056A (en) * | 1979-10-17 | 1981-08-18 | Rca Corporation | Replicable optical recording medium |
JPS56119947A (en) * | 1980-02-23 | 1981-09-19 | Sharp Corp | Information recording disc |
JPS56156144U (fr) * | 1980-04-21 | 1981-11-21 | ||
US4383311A (en) * | 1980-10-21 | 1983-05-10 | Rca Corporation | Optical recording medium and information record with indented overcoat |
JP2939562B2 (ja) * | 1990-05-24 | 1999-08-25 | 日本電信電話株式会社 | 小口径管埋設における方向修正方法およびその小口径管埋設装置 |
-
1982
- 1982-08-07 DE DE19823229573 patent/DE3229573A1/de active Granted
- 1982-08-12 FR FR8214044A patent/FR2531798B1/fr not_active Expired
- 1982-08-12 JP JP57140903A patent/JPS5838193A/ja active Granted
- 1982-08-16 NL NL8203213A patent/NL192279C/nl not_active IP Right Cessation
- 1982-08-16 GB GB8223551A patent/GB2105094B/en not_active Expired
-
1991
- 1991-11-28 JP JP3337956A patent/JPH0821178B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2531798B1 (fr) | 1987-04-30 |
GB2105094B (en) | 1985-10-09 |
JPH0821178B2 (ja) | 1996-03-04 |
DE3229573A1 (de) | 1983-02-24 |
JPH0430095B2 (fr) | 1992-05-20 |
NL8203213A (nl) | 1983-03-16 |
GB2105094A (en) | 1983-03-16 |
NL192279B (nl) | 1996-12-02 |
DE3229573C2 (fr) | 1992-05-21 |
JPS5838193A (ja) | 1983-03-05 |
JPH0547040A (ja) | 1993-02-26 |
FR2531798A1 (fr) | 1984-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A85 | Still pending on 85-01-01 | ||
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
V4 | Lapsed because of reaching the maximum lifetime of a patent |
Free format text: 20020816 |