JPH0127494B2 - - Google Patents
Info
- Publication number
- JPH0127494B2 JPH0127494B2 JP56199269A JP19926981A JPH0127494B2 JP H0127494 B2 JPH0127494 B2 JP H0127494B2 JP 56199269 A JP56199269 A JP 56199269A JP 19926981 A JP19926981 A JP 19926981A JP H0127494 B2 JPH0127494 B2 JP H0127494B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- optical system
- track
- signal
- reproducing
- 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 44
- 239000010409 thin film Substances 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56199269A JPS58100249A (ja) | 1981-12-09 | 1981-12-09 | 光学情報記録用担体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56199269A JPS58100249A (ja) | 1981-12-09 | 1981-12-09 | 光学情報記録用担体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58100249A JPS58100249A (ja) | 1983-06-14 |
JPH0127494B2 true JPH0127494B2 (fr) | 1989-05-29 |
Family
ID=16404972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56199269A Granted JPS58100249A (ja) | 1981-12-09 | 1981-12-09 | 光学情報記録用担体 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58100249A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6050733A (ja) * | 1983-08-31 | 1985-03-20 | Sony Corp | 光学式記録媒体及びその原盤の製造装置 |
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 |
JPS61172233A (ja) * | 1985-01-25 | 1986-08-02 | Nec Corp | 光デイスク用基板 |
JPS63157319A (ja) * | 1986-12-19 | 1988-06-30 | Matsushita Electric Ind Co Ltd | 光デイスク |
JPH01107321A (ja) * | 1987-10-20 | 1989-04-25 | Matsushita Electric Ind Co Ltd | 光ディスク |
JP2687850B2 (ja) * | 1993-09-27 | 1997-12-08 | 株式会社日立製作所 | 情報処理装置 |
JP2611681B2 (ja) * | 1994-12-19 | 1997-05-21 | ソニー株式会社 | 光学式記録媒体 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046317A (fr) * | 1973-08-29 | 1975-04-25 | ||
JPS5265404A (en) * | 1975-11-26 | 1977-05-30 | Matsushita Electric Ind Co Ltd | Information recording original disk being furnished with pattern for d etecting focus position |
-
1981
- 1981-12-09 JP JP56199269A patent/JPS58100249A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5046317A (fr) * | 1973-08-29 | 1975-04-25 | ||
JPS5265404A (en) * | 1975-11-26 | 1977-05-30 | Matsushita Electric Ind Co Ltd | Information recording original disk being furnished with pattern for d etecting focus position |
Also Published As
Publication number | Publication date |
---|---|
JPS58100249A (ja) | 1983-06-14 |
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