JPS6152533B2 - - Google Patents
Info
- Publication number
- JPS6152533B2 JPS6152533B2 JP7609380A JP7609380A JPS6152533B2 JP S6152533 B2 JPS6152533 B2 JP S6152533B2 JP 7609380 A JP7609380 A JP 7609380A JP 7609380 A JP7609380 A JP 7609380A JP S6152533 B2 JPS6152533 B2 JP S6152533B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- circuit
- beam spot
- signal
- output
- 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 17
- 238000001514 detection method Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7609380A JPS573231A (en) | 1980-06-06 | 1980-06-06 | Optical reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7609380A JPS573231A (en) | 1980-06-06 | 1980-06-06 | Optical reproducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS573231A JPS573231A (en) | 1982-01-08 |
JPS6152533B2 true JPS6152533B2 (fr) | 1986-11-13 |
Family
ID=13595225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7609380A Granted JPS573231A (en) | 1980-06-06 | 1980-06-06 | Optical reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS573231A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080013428A1 (en) * | 2004-05-12 | 2008-01-17 | Koninklijke Philips Electronics, N.V. | Servo System, Record Carrier and Playback Device |
-
1980
- 1980-06-06 JP JP7609380A patent/JPS573231A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS573231A (en) | 1982-01-08 |
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