JPH0352147B2 - - Google Patents
Info
- Publication number
- JPH0352147B2 JPH0352147B2 JP57183158A JP18315882A JPH0352147B2 JP H0352147 B2 JPH0352147 B2 JP H0352147B2 JP 57183158 A JP57183158 A JP 57183158A JP 18315882 A JP18315882 A JP 18315882A JP H0352147 B2 JPH0352147 B2 JP H0352147B2
- Authority
- JP
- Japan
- Prior art keywords
- mark
- discrimination
- track
- recording
- information
- 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
- 230000003287 optical effect Effects 0.000 claims description 41
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57183158A JPS5972682A (ja) | 1982-10-18 | 1982-10-18 | 光学的記録再生装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57183158A JPS5972682A (ja) | 1982-10-18 | 1982-10-18 | 光学的記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5972682A JPS5972682A (ja) | 1984-04-24 |
JPH0352147B2 true JPH0352147B2 (it) | 1991-08-09 |
Family
ID=16130809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57183158A Granted JPS5972682A (ja) | 1982-10-18 | 1982-10-18 | 光学的記録再生装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5972682A (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5303225A (en) * | 1989-10-30 | 1994-04-12 | Matsushita Electrical Industrial Co., Ltd. | Multi-layered optical disk with track and layer identification |
JP2009271989A (ja) | 2008-05-07 | 2009-11-19 | Canon Inc | 円形の光学メディアの表裏判定装置及び円形の光学メディアの表裏判定装置の制御方法 |
-
1982
- 1982-10-18 JP JP57183158A patent/JPS5972682A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5972682A (ja) | 1984-04-24 |
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