JPH0476180B2 - - Google Patents
Info
- Publication number
- JPH0476180B2 JPH0476180B2 JP2645085A JP2645085A JPH0476180B2 JP H0476180 B2 JPH0476180 B2 JP H0476180B2 JP 2645085 A JP2645085 A JP 2645085A JP 2645085 A JP2645085 A JP 2645085A JP H0476180 B2 JPH0476180 B2 JP H0476180B2
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- track
- signal
- state detection
- tracking state
- 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
- 238000001514 detection method Methods 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2645085A JPS61187132A (ja) | 1985-02-15 | 1985-02-15 | トラックアクセス方法 |
| US06/828,872 US4858214A (en) | 1985-02-15 | 1986-02-12 | Tracking control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2645085A JPS61187132A (ja) | 1985-02-15 | 1985-02-15 | トラックアクセス方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61187132A JPS61187132A (ja) | 1986-08-20 |
| JPH0476180B2 true JPH0476180B2 (de) | 1992-12-02 |
Family
ID=12193837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2645085A Granted JPS61187132A (ja) | 1985-02-15 | 1985-02-15 | トラックアクセス方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61187132A (de) |
-
1985
- 1985-02-15 JP JP2645085A patent/JPS61187132A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61187132A (ja) | 1986-08-20 |
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