DE68927322D1 - Optische karte mit lichtabsorbierender schicht - Google Patents
Optische karte mit lichtabsorbierender schichtInfo
- Publication number
- DE68927322D1 DE68927322D1 DE68927322T DE68927322T DE68927322D1 DE 68927322 D1 DE68927322 D1 DE 68927322D1 DE 68927322 T DE68927322 T DE 68927322T DE 68927322 T DE68927322 T DE 68927322T DE 68927322 D1 DE68927322 D1 DE 68927322D1
- Authority
- DE
- Germany
- Prior art keywords
- light
- read
- optical
- absorbing layer
- optical cards
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title abstract 7
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
-
- 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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Credit Cards Or The Like (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63152530A JP2673280B2 (ja) | 1988-06-21 | 1988-06-21 | 光記録カード |
PCT/JP1989/000559 WO1989012888A1 (en) | 1988-06-21 | 1989-06-02 | Optical card having a light-absorbing layer |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68927322D1 true DE68927322D1 (de) | 1996-11-14 |
DE68927322T2 DE68927322T2 (de) | 1997-02-20 |
Family
ID=15542454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68927322T Expired - Fee Related DE68927322T2 (de) | 1988-06-21 | 1989-06-02 | Optische karte mit lichtabsorbierender schicht |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0420982B1 (de) |
JP (1) | JP2673280B2 (de) |
AT (1) | ATE144067T1 (de) |
CA (1) | CA1331402C (de) |
DE (1) | DE68927322T2 (de) |
WO (1) | WO1989012888A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2804130B2 (ja) * | 1989-12-06 | 1998-09-24 | 株式会社日立製作所 | 情報処理装置 |
JPH0778357A (ja) * | 1993-09-08 | 1995-03-20 | Sony Corp | 光学的情報媒体 |
US5619371A (en) * | 1995-03-02 | 1997-04-08 | Southern Research Institute | Confocal optical microscopy system for multi-layer data storage and retrieval |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5811196A (ja) * | 1981-07-14 | 1983-01-21 | Tdk Corp | 光記録媒体 |
JPS6047247A (ja) * | 1983-08-26 | 1985-03-14 | Hitachi Ltd | 記録媒体 |
GB2148148B (en) * | 1983-09-19 | 1988-01-13 | Storage Technology Corp | Optical storage medium and method for making same |
JPS60251557A (ja) * | 1984-05-28 | 1985-12-12 | Matsushita Electric Ind Co Ltd | 光学式記録再生装置 |
JPS637535A (ja) * | 1986-06-27 | 1988-01-13 | Dainippon Printing Co Ltd | 光カ−ド |
JPS63155440A (ja) * | 1986-12-19 | 1988-06-28 | Fujitsu Ltd | 互換型書き換え可能光デイスク |
-
1988
- 1988-06-21 JP JP63152530A patent/JP2673280B2/ja not_active Expired - Lifetime
-
1989
- 1989-06-02 EP EP89906446A patent/EP0420982B1/de not_active Expired - Lifetime
- 1989-06-02 DE DE68927322T patent/DE68927322T2/de not_active Expired - Fee Related
- 1989-06-02 WO PCT/JP1989/000559 patent/WO1989012888A1/ja active IP Right Grant
- 1989-06-02 AT AT89906446T patent/ATE144067T1/de not_active IP Right Cessation
- 1989-06-07 CA CA000601991A patent/CA1331402C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0420982A1 (de) | 1991-04-10 |
JPH025244A (ja) | 1990-01-10 |
EP0420982A4 (en) | 1992-08-12 |
EP0420982B1 (de) | 1996-10-09 |
DE68927322T2 (de) | 1997-02-20 |
WO1989012888A1 (en) | 1989-12-28 |
ATE144067T1 (de) | 1996-10-15 |
JP2673280B2 (ja) | 1997-11-05 |
CA1331402C (en) | 1994-08-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |