JPH0580053B2 - - Google Patents
Info
- Publication number
- JPH0580053B2 JPH0580053B2 JP4792585A JP4792585A JPH0580053B2 JP H0580053 B2 JPH0580053 B2 JP H0580053B2 JP 4792585 A JP4792585 A JP 4792585A JP 4792585 A JP4792585 A JP 4792585A JP H0580053 B2 JPH0580053 B2 JP H0580053B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- state
- phase difference
- validity
- tracking error
- 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
- 238000001514 detection method Methods 0.000 claims description 117
- 238000007493 shaping process Methods 0.000 claims description 28
- 230000003287 optical effect Effects 0.000 claims description 19
- 230000007423 decrease Effects 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims 1
- 230000011664 signaling Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 18
- 239000003990 capacitor Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 239000000872 buffer Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60047925A JPS61206933A (ja) | 1985-03-11 | 1985-03-11 | 光学的情報再生装置 |
| US06/837,287 US4740940A (en) | 1985-03-11 | 1986-03-06 | Optical information read apparatus |
| EP86301731A EP0197666B1 (fr) | 1985-03-11 | 1986-03-11 | Appareil optique de reproduction d'informations |
| KR8601708A KR900002997B1 (en) | 1985-03-11 | 1986-03-11 | Optical information player |
| DE8686301731T DE3675056D1 (de) | 1985-03-11 | 1986-03-11 | Optisches informationswiedergabegeraet. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60047925A JPS61206933A (ja) | 1985-03-11 | 1985-03-11 | 光学的情報再生装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61206933A JPS61206933A (ja) | 1986-09-13 |
| JPH0580053B2 true JPH0580053B2 (fr) | 1993-11-05 |
Family
ID=12788947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60047925A Granted JPS61206933A (ja) | 1985-03-11 | 1985-03-11 | 光学的情報再生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61206933A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010027203A (ja) * | 2009-11-02 | 2010-02-04 | Panasonic Corp | オフトラック検出装置 |
-
1985
- 1985-03-11 JP JP60047925A patent/JPS61206933A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61206933A (ja) | 1986-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |