JPS568417B2 - - Google Patents
Info
- Publication number
- JPS568417B2 JPS568417B2 JP7070876A JP7070876A JPS568417B2 JP S568417 B2 JPS568417 B2 JP S568417B2 JP 7070876 A JP7070876 A JP 7070876A JP 7070876 A JP7070876 A JP 7070876A JP S568417 B2 JPS568417 B2 JP S568417B2
- Authority
- JP
- Japan
- 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
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 Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7070876A JPS52153404A (en) | 1976-06-15 | 1976-06-15 | Information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7070876A JPS52153404A (en) | 1976-06-15 | 1976-06-15 | Information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52153404A JPS52153404A (en) | 1977-12-20 |
| JPS568417B2 true JPS568417B2 (cs) | 1981-02-24 |
Family
ID=13439346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7070876A Granted JPS52153404A (en) | 1976-06-15 | 1976-06-15 | Information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS52153404A (cs) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429608A (en) * | 1977-08-09 | 1979-03-05 | Mitsubishi Electric Corp | Information signal recording carrier |
| JPS6226816Y2 (cs) * | 1978-08-11 | 1987-07-09 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838702A (cs) * | 1971-09-18 | 1973-06-07 |
-
1976
- 1976-06-15 JP JP7070876A patent/JPS52153404A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52153404A (en) | 1977-12-20 |