JPS6321979B2 - - Google Patents
Info
- Publication number
- JPS6321979B2 JPS6321979B2 JP9485481A JP9485481A JPS6321979B2 JP S6321979 B2 JPS6321979 B2 JP S6321979B2 JP 9485481 A JP9485481 A JP 9485481A JP 9485481 A JP9485481 A JP 9485481A JP S6321979 B2 JPS6321979 B2 JP S6321979B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- frequency component
- tracking
- differential amplifier
- photodetector
- 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 6
- 238000010586 diagram Methods 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9485481A JPS57210453A (en) | 1981-06-19 | 1981-06-19 | Optical tracking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9485481A JPS57210453A (en) | 1981-06-19 | 1981-06-19 | Optical tracking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57210453A JPS57210453A (en) | 1982-12-24 |
JPS6321979B2 true JPS6321979B2 (US20110158925A1-20110630-C00042.png) | 1988-05-10 |
Family
ID=14121613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9485481A Granted JPS57210453A (en) | 1981-06-19 | 1981-06-19 | Optical tracking device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57210453A (US20110158925A1-20110630-C00042.png) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2619381B2 (ja) * | 1987-03-20 | 1997-06-11 | 株式会社日立製作所 | 光学的情報再生装置 |
-
1981
- 1981-06-19 JP JP9485481A patent/JPS57210453A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS57210453A (en) | 1982-12-24 |
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