JPH0319623B2 - - Google Patents
Info
- Publication number
- JPH0319623B2 JPH0319623B2 JP56027344A JP2734481A JPH0319623B2 JP H0319623 B2 JPH0319623 B2 JP H0319623B2 JP 56027344 A JP56027344 A JP 56027344A JP 2734481 A JP2734481 A JP 2734481A JP H0319623 B2 JPH0319623 B2 JP H0319623B2
- Authority
- JP
- Japan
- Prior art keywords
- disk
- track
- recording
- evaluation
- area
- 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 - Lifetime
Links
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
- G11B27/34—Indicating arrangements
-
- 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
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2734481A JPS57141030A (en) | 1981-02-25 | 1981-02-25 | Optical recording of reproducing or reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2734481A JPS57141030A (en) | 1981-02-25 | 1981-02-25 | Optical recording of reproducing or reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57141030A JPS57141030A (en) | 1982-09-01 |
| JPH0319623B2 true JPH0319623B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-03-15 |
Family
ID=12218426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2734481A Granted JPS57141030A (en) | 1981-02-25 | 1981-02-25 | Optical recording of reproducing or reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57141030A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7808638A (nl) * | 1978-08-22 | 1980-02-26 | Philips Nv | Inrichting voor het uitlezen van een schijfvormige re- gistratiedrager. |
-
1981
- 1981-02-25 JP JP2734481A patent/JPS57141030A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57141030A (en) | 1982-09-01 |