FR2385535A1 - Perfectionnement a un support d'information - Google Patents
Perfectionnement a un support d'informationInfo
- Publication number
- FR2385535A1 FR2385535A1 FR7739337A FR7739337A FR2385535A1 FR 2385535 A1 FR2385535 A1 FR 2385535A1 FR 7739337 A FR7739337 A FR 7739337A FR 7739337 A FR7739337 A FR 7739337A FR 2385535 A1 FR2385535 A1 FR 2385535A1
- Authority
- FR
- France
- Prior art keywords
- layer
- holes
- light
- thickness
- regions
- 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
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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
Abstract
L'invention concerne un support d'information à utiliser dans un dispositif de restitution employant un faisceau de lumière à une fréquence donnée. Selon l'invention, un substrat 13 a une surface 15 réfléchissant la lumière, recouverte d'une couche d'un matériau 17 transparent à la lumière, recouverte elle-même d'une couche 19 d'un matériau absorbant la lumière, où est formée une piste d'information; la piste d'information se compose d'une succession de trous espacés P1 , P2 , P3 , P4 , des variations de l'espace entre des bords de trous successifs représentant l'information enregistrée; l'épaisseur de la couche 19 dans toutes ses régions autres que celles occupées par les trous est en rapport avec l'épaisseur de la couche 17 pour établir une condition d'anti-réflexion pour toutes les régions de la couche 19 autres que celles occupées par les trous; l'épaisseur de la couche 19 dans les régions occupées par les trous est inférieure à celle requise pour etablir une condition d'anti-réflexion. L'invention s'applique notamment à l'enregistrement et à la restitution des signaux vidéo.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78203277A | 1977-03-28 | 1977-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2385535A1 true FR2385535A1 (fr) | 1978-10-27 |
FR2385535B1 FR2385535B1 (fr) | 1984-05-04 |
Family
ID=25124733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7739337A Granted FR2385535A1 (fr) | 1977-03-28 | 1977-12-27 | Perfectionnement a un support d'information |
Country Status (9)
Country | Link |
---|---|
JP (2) | JPS53120506A (fr) |
AU (1) | AU514899B2 (fr) |
DE (1) | DE2757737A1 (fr) |
FR (1) | FR2385535A1 (fr) |
GB (1) | GB1590296A (fr) |
HK (1) | HK49783A (fr) |
IT (1) | IT1088701B (fr) |
MY (1) | MY8400273A (fr) |
NL (1) | NL191658C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402275A1 (fr) * | 1977-08-29 | 1979-03-30 | Rca Corp | Perfectionnements apportes aux disques video |
FR2418513A1 (fr) * | 1978-02-24 | 1979-09-21 | Rca Corp | Support de stockage et de restitution d'information par voie optique |
EP0046104A1 (fr) * | 1980-08-13 | 1982-02-17 | Thomson-Csf | Procédé thermo-optique d'inscription d'information, support d'information destiné à la mise en oeuvre de ce procédé et dispositif de lecture de ce support d'information |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56156941A (en) * | 1980-05-06 | 1981-12-03 | Nippon Telegr & Teleph Corp <Ntt> | Optical recording medium |
EP0045183B1 (fr) * | 1980-07-25 | 1984-12-05 | Asahi Kasei Kogyo Kabushiki Kaisha | Matériau d'enregistrement |
JPS5952442A (ja) * | 1982-09-14 | 1984-03-27 | Kokusai Denshin Denwa Co Ltd <Kdd> | 光磁気記録媒体 |
JPS59210545A (ja) * | 1984-04-20 | 1984-11-29 | Hitachi Ltd | 情報記録媒体 |
JPH0624272U (ja) * | 1992-08-31 | 1994-03-29 | 東芝機器株式会社 | 可撓性チューブの開閉装置 |
JP4778300B2 (ja) | 2004-12-15 | 2011-09-21 | 株式会社リコー | 追記型光記録媒体 |
WO2006098506A1 (fr) * | 2005-03-17 | 2006-09-21 | Ricoh Company, Ltd. | Support d'enregistrment optique |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3651281A (en) * | 1969-06-06 | 1972-03-21 | Carl H Becker | Laser recording system using photomagnetically magnetizable storage medium |
DE2048430A1 (en) * | 1970-10-02 | 1972-04-06 | Licentia Gmbh | Etching information carrier - through masking coat partly removed by laser beam |
US3665483A (en) * | 1969-06-06 | 1972-05-23 | Chase Manhattan Capital Corp | Laser recording medium |
DE2522928A1 (de) * | 1974-05-25 | 1975-12-04 | Canon Kk | Aufzeichnungstraeger und -verfahren |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52155474A (en) * | 1976-06-21 | 1977-12-23 | Nippon Mining Co | Magnetic force sorting device |
-
1977
- 1977-11-23 AU AU30876/77A patent/AU514899B2/en not_active Expired
- 1977-11-29 IT IT30206/77A patent/IT1088701B/it active
- 1977-11-30 NL NL7713230A patent/NL191658C/xx not_active IP Right Cessation
- 1977-12-20 GB GB52944/77A patent/GB1590296A/en not_active Expired
- 1977-12-22 JP JP15547477A patent/JPS53120506A/ja active Granted
- 1977-12-23 DE DE19772757737 patent/DE2757737A1/de active Granted
- 1977-12-27 FR FR7739337A patent/FR2385535A1/fr active Granted
-
1983
- 1983-11-03 HK HK497/83A patent/HK49783A/xx not_active IP Right Cessation
-
1984
- 1984-12-30 MY MY273/84A patent/MY8400273A/xx unknown
-
1987
- 1987-06-10 JP JP62145017A patent/JPS6352347A/ja active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3651281A (en) * | 1969-06-06 | 1972-03-21 | Carl H Becker | Laser recording system using photomagnetically magnetizable storage medium |
US3665483A (en) * | 1969-06-06 | 1972-05-23 | Chase Manhattan Capital Corp | Laser recording medium |
DE2048430A1 (en) * | 1970-10-02 | 1972-04-06 | Licentia Gmbh | Etching information carrier - through masking coat partly removed by laser beam |
DE2522928A1 (de) * | 1974-05-25 | 1975-12-04 | Canon Kk | Aufzeichnungstraeger und -verfahren |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402275A1 (fr) * | 1977-08-29 | 1979-03-30 | Rca Corp | Perfectionnements apportes aux disques video |
FR2418513A1 (fr) * | 1978-02-24 | 1979-09-21 | Rca Corp | Support de stockage et de restitution d'information par voie optique |
EP0046104A1 (fr) * | 1980-08-13 | 1982-02-17 | Thomson-Csf | Procédé thermo-optique d'inscription d'information, support d'information destiné à la mise en oeuvre de ce procédé et dispositif de lecture de ce support d'information |
Also Published As
Publication number | Publication date |
---|---|
HK49783A (en) | 1983-11-11 |
DE2757737C2 (fr) | 1988-05-05 |
IT1088701B (it) | 1985-06-10 |
JPS53120506A (en) | 1978-10-21 |
DE2757737A1 (de) | 1978-10-05 |
GB1590296A (en) | 1981-05-28 |
NL191658B (nl) | 1995-08-01 |
JPH0222453B2 (fr) | 1990-05-18 |
JPS6259372B2 (fr) | 1987-12-10 |
JPS6352347A (ja) | 1988-03-05 |
NL7713230A (nl) | 1978-10-02 |
AU3087677A (en) | 1979-05-31 |
FR2385535B1 (fr) | 1984-05-04 |
AU514899B2 (en) | 1981-03-05 |
MY8400273A (en) | 1984-12-31 |
NL191658C (nl) | 1995-12-02 |
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