JPH0510277Y2 - - Google Patents
Info
- Publication number
- JPH0510277Y2 JPH0510277Y2 JP1986056073U JP5607386U JPH0510277Y2 JP H0510277 Y2 JPH0510277 Y2 JP H0510277Y2 JP 1986056073 U JP1986056073 U JP 1986056073U JP 5607386 U JP5607386 U JP 5607386U JP H0510277 Y2 JPH0510277 Y2 JP H0510277Y2
- Authority
- JP
- Japan
- Prior art keywords
- focus
- reflected light
- signal
- level
- amount
- 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 34
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986056073U JPH0510277Y2 (sv) | 1986-04-16 | 1986-04-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986056073U JPH0510277Y2 (sv) | 1986-04-16 | 1986-04-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62168159U JPS62168159U (sv) | 1987-10-24 |
JPH0510277Y2 true JPH0510277Y2 (sv) | 1993-03-12 |
Family
ID=30884562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986056073U Expired - Lifetime JPH0510277Y2 (sv) | 1986-04-16 | 1986-04-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0510277Y2 (sv) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2870167B2 (ja) * | 1990-09-13 | 1999-03-10 | 松下電器産業株式会社 | 光ディスク装置 |
JP2598165B2 (ja) * | 1990-11-29 | 1997-04-09 | ソニー株式会社 | 光ディスク記録再生装置 |
WO1998031012A1 (fr) * | 1997-01-10 | 1998-07-16 | Sony Corporation | Systeme de disques optiques et systeme discernant les disques optiques |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5750357A (en) * | 1980-09-08 | 1982-03-24 | Matsushita Electric Ind Co Ltd | Disk reproducer |
JPS5726769B2 (sv) * | 1976-01-23 | 1982-06-07 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5726769U (sv) * | 1980-07-17 | 1982-02-12 |
-
1986
- 1986-04-16 JP JP1986056073U patent/JPH0510277Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5726769B2 (sv) * | 1976-01-23 | 1982-06-07 | ||
JPS5750357A (en) * | 1980-09-08 | 1982-03-24 | Matsushita Electric Ind Co Ltd | Disk reproducer |
Also Published As
Publication number | Publication date |
---|---|
JPS62168159U (sv) | 1987-10-24 |
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