JPS6118392B2 - - Google Patents
Info
- Publication number
- JPS6118392B2 JPS6118392B2 JP50126026A JP12602675A JPS6118392B2 JP S6118392 B2 JPS6118392 B2 JP S6118392B2 JP 50126026 A JP50126026 A JP 50126026A JP 12602675 A JP12602675 A JP 12602675A JP S6118392 B2 JPS6118392 B2 JP S6118392B2
- Authority
- JP
- Japan
- Prior art keywords
- data
- record carrier
- layers
- light
- light beam
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 46
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000013500 data storage Methods 0.000 claims description 3
- 230000001902 propagating effect Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 50
- 239000000758 substrate Substances 0.000 description 13
- 238000006073 displacement reaction Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
-
- 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
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
-
- 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
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51645374A | 1974-10-21 | 1974-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5231610A JPS5231610A (en) | 1977-03-10 |
| JPS6118392B2 true JPS6118392B2 (xx) | 1986-05-12 |
Family
ID=24055665
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50126026A Granted JPS5231610A (en) | 1974-10-21 | 1975-10-21 | Multilayer optical data recording carrier |
| JP59027369A Pending JPS59223949A (ja) | 1974-10-21 | 1984-02-17 | 光ビ−ム走査装置 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59027369A Pending JPS59223949A (ja) | 1974-10-21 | 1984-02-17 | 光ビ−ム走査装置 |
Country Status (5)
| Country | Link |
|---|---|
| JP (2) | JPS5231610A (xx) |
| CA (2) | CA1078060A (xx) |
| DE (1) | DE2546941A1 (xx) |
| GB (1) | GB1516413A (xx) |
| NL (1) | NL7510462A (xx) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4074085A (en) * | 1976-03-31 | 1978-02-14 | Eli S. Jacobs | Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks |
| NL7803069A (nl) * | 1978-03-22 | 1979-09-25 | Philips Nv | Meerlaags informatieschijf. |
| FR2488711B1 (fr) * | 1980-08-13 | 1985-06-28 | Thomson Csf | Procede thermo-optique d'inscription d'information et support d'information destine a la mise en oeuvre de ce procede |
| JPS59210544A (ja) * | 1983-05-16 | 1984-11-29 | Nec Corp | 光記録媒体 |
| US4639745A (en) * | 1984-01-11 | 1987-01-27 | Pioneer Electronic Corporation | Optical recording medium |
| US4745484A (en) * | 1986-07-30 | 1988-05-17 | Drexler Technology Corporation | Method and apparatus for stepped imaging in reading data |
| EP0434230B1 (en) * | 1989-11-22 | 1996-05-22 | Sharp Kabushiki Kaisha | Optical recording medium and method of recording and reproducing information thereon |
| US5373499A (en) * | 1993-07-22 | 1994-12-13 | International Business Machines Corporation | Multilayer optical disk and system having multiple optical paths include identical total disk substrate thickness |
| US5644555A (en) * | 1995-01-19 | 1997-07-01 | International Business Machines Corporation | Multiple data surface magneto-optical data storage system |
| JPH09161320A (ja) * | 1995-12-08 | 1997-06-20 | Nippon Columbia Co Ltd | 貼り合わせ型光情報記録媒体 |
| FR2765716B1 (fr) * | 1997-07-02 | 1999-07-30 | Commissariat Energie Atomique | Support d'enregistrement optique a deux niveaux superposes, dispositif d'enregistrement et procede de lecture correspondants |
| GB2428130A (en) * | 2005-07-06 | 2007-01-17 | Univ Basel | Photographic storage of digital information |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229603B2 (xx) * | 1971-08-10 | 1977-08-03 | ||
| JPS5828652B2 (ja) * | 1972-12-25 | 1983-06-17 | 萬世工業株式会社 | ヨミトリソウチ |
-
1975
- 1975-07-31 CA CA232,631A patent/CA1078060A/en not_active Expired
- 1975-08-04 GB GB32589/75A patent/GB1516413A/en not_active Expired
- 1975-09-04 NL NL7510462A patent/NL7510462A/xx not_active Application Discontinuation
- 1975-10-20 DE DE19752546941 patent/DE2546941A1/de not_active Ceased
- 1975-10-21 JP JP50126026A patent/JPS5231610A/ja active Granted
-
1980
- 1980-01-03 CA CA342,948A patent/CA1091804A/en not_active Expired
-
1984
- 1984-02-17 JP JP59027369A patent/JPS59223949A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2546941A1 (de) | 1976-04-29 |
| JPS5231610A (en) | 1977-03-10 |
| GB1516413A (en) | 1978-07-05 |
| CA1078060A (en) | 1980-05-20 |
| NL7510462A (nl) | 1976-04-23 |
| JPS59223949A (ja) | 1984-12-15 |
| CA1091804A (en) | 1980-12-16 |
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