JPS62129118U - - Google Patents
Info
- Publication number
- JPS62129118U JPS62129118U JP1677686U JP1677686U JPS62129118U JP S62129118 U JPS62129118 U JP S62129118U JP 1677686 U JP1677686 U JP 1677686U JP 1677686 U JP1677686 U JP 1677686U JP S62129118 U JPS62129118 U JP S62129118U
- Authority
- JP
- Japan
- Prior art keywords
- pick
- detection means
- signal
- detecting
- abnormal 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims 3
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第１図は、この考案の一実施例を示すブロツク
図である。第２図は、コンパクトデイスクの各領
域を示す斜視図である。第３図は、エンベロープ
検出回路の一例を示す回路図である。
１４…レーザピツクアツプ、１６…デイスク。
FIG. 1 is a block diagram showing one embodiment of this invention. FIG. 2 is a perspective view showing each area of the compact disc. FIG. 3 is a circuit diagram showing an example of an envelope detection circuit. 14...Laser pick-up, 16...Disk.
Claims (1)
フオーカス検出手段と、 ピツクアツプからの信号の有無を検出する信号
検出手段と、 ピツクアツプからの信号の内容の正誤を検出す
る信号内容検出手段と、 前記各検出手段の検出内容によりピツクアツプ
位置の異常状態を検出する異常状態検出手段と、 前記異常状態が検出された場合に、ピツクアツ
プ位置を正規の位置に復帰させる制御手段と を具備してなる光デイスク再生装置。[Claims for Utility Model Registration] Focus detection means for detecting the focus control state of the pick-up, signal detection means for detecting the presence or absence of a signal from the pick-up, and signal content detection means for detecting whether the content of the signal from the pick-up is correct or incorrect. and abnormal state detection means for detecting an abnormal state of the pick-up position based on the detection contents of each of the detection means, and a control means for returning the pick-up position to a normal position when the abnormal state is detected. An optical disc playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1677686U JPS62129118U (en) | 1986-02-07 | 1986-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1677686U JPS62129118U (en) | 1986-02-07 | 1986-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62129118U true JPS62129118U (en) | 1987-08-15 |
Family
ID=30808938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1677686U Pending JPS62129118U (en) | 1986-02-07 | 1986-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62129118U (en) |
-
1986
- 1986-02-07 JP JP1677686U patent/JPS62129118U/ja active Pending
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