JPH0416621U - - Google Patents
Info
- Publication number
- JPH0416621U JPH0416621U JP5760390U JP5760390U JPH0416621U JP H0416621 U JPH0416621 U JP H0416621U JP 5760390 U JP5760390 U JP 5760390U JP 5760390 U JP5760390 U JP 5760390U JP H0416621 U JPH0416621 U JP H0416621U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- command signal
- drive
- pick
- deviation amount
- 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
- 230000008054 signal transmission Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図はこの考案に係るデイスクプレーヤーの
トラツキング装置の１実施例の回路図、第２図は
同回路の一部を機能ブロツクで示した図、第３図
ａ，ｂは外れ量信号の説明図、第４図ａ，ｂは比
較器の出力信号の説明図、第５図はドライブ回路
を示す図である。
３……ピツクアツプ、１４……ドライブ回路、
１８，１９……スイツチ、２０……ドライブオフ
回路、２１……オフ指令信号発信回路、２２……
指令信号停止回路、２３……第１の比較器、２７
……第２の比較器、３１……積分器、３２……第
３の比較器、Ｓ……外れ量信号、Ｔ……トラツク
。
Fig. 1 is a circuit diagram of one embodiment of a tracking device for a disc player according to this invention, Fig. 2 is a diagram showing a part of the same circuit as a functional block, and Figs. 3 a and b are explanations of the deviation amount signal. 4A and 4B are explanatory diagrams of the output signals of the comparator, and FIG. 5 is a diagram showing the drive circuit. 3...Pickup, 14...Drive circuit,
18, 19...Switch, 20...Drive-off circuit, 21...Off command signal transmission circuit, 22...
Command signal stop circuit, 23...first comparator, 27
... second comparator, 31 ... integrator, 32 ... third comparator, S ... deviation amount signal, T ... track.
Claims (1)
出して、この外れ量信号に基づきピツクアツプの
ドライブ回路をサーボ制御してピツクアツプが所
定のトラツクをとらえ続けるようにするトラツキ
ング装置において、上記外れ量信号の発振を検出
して、この発振検出により上記ドライブ回路の制
御を一時不能にするドライブオフ回路を設けたこ
とを特徴とするデイスクプレーヤーにおけるトラ
ツキング装置。 (2) 上記ドライブオフ回路が、外れ量信号の増
大に基づき上記ドライブ回路のオフ指令を発する
オフ指令信号の発信回路と、この発信回路からの
オフ指令信号の積分値が所定値に達すると上記オ
フ指令信号の発信回路からのオフ指令信号の発信
そのものを停止させる指令信号停止回路とからな
る請求項１に記載のデイスクプレーヤーにおける
トラツキング装置。[Claims for Utility Model Registration] (1) Tracking that detects the amount of deviation of the pick-up from the track and servo-controls the pick-up drive circuit based on this deviation amount signal so that the pick-up continues to capture a predetermined track. A tracking device for a disc player, characterized in that the device is provided with a drive-off circuit that detects oscillation of the deviation amount signal and temporarily disables control of the drive circuit by detecting the oscillation. (2) The drive-off circuit includes an off-command signal transmitting circuit that issues an off-command for the drive circuit based on an increase in the deviation amount signal, and when the integrated value of the off-command signal from this transmitting circuit reaches a predetermined value, the 2. The tracking device for a disc player according to claim 1, further comprising a command signal stop circuit that stops the transmission of the off command signal itself from the off command signal transmission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5760390U JPH0416621U (en) | 1990-05-30 | 1990-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5760390U JPH0416621U (en) | 1990-05-30 | 1990-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0416621U true JPH0416621U (en) | 1992-02-12 |
Family
ID=31582463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5760390U Pending JPH0416621U (en) | 1990-05-30 | 1990-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416621U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281375A (en) * | 1988-09-19 | 1990-03-22 | Pioneer Electron Corp | Servo device for disk player |
-
1990
- 1990-05-30 JP JP5760390U patent/JPH0416621U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0281375A (en) * | 1988-09-19 | 1990-03-22 | Pioneer Electron Corp | Servo device for disk player |
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