JPS59135561U - Tracking servo retraction device - Google Patents
Tracking servo retraction deviceInfo
- Publication number
- JPS59135561U JPS59135561U JP2698483U JP2698483U JPS59135561U JP S59135561 U JPS59135561 U JP S59135561U JP 2698483 U JP2698483 U JP 2698483U JP 2698483 U JP2698483 U JP 2698483U JP S59135561 U JPS59135561 U JP S59135561U
- Authority
- JP
- Japan
- Prior art keywords
- tracking servo
- loop
- information detection
- detection point
- tracking
- 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.)
- Granted
Links
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は現在提案中のトラッキングサーボ引込装置のブ
ロック・図、第２図は第１図のブロックの動作を示す信
号波形図、第３図は本考案の１実施例のブロック図、第
４図は第３図のブロックの動作波形図、第５図は本考案
の他の実施例のブロック図である。
主要部分の符号の説明、１・・・記録トラック、２・・
・情報検出点、９・・・ループスイッチ、１１・・・コ
イル、１２・・・トラッキングミラー、１５・・・ＤＦ
Ｆ。
２０・・・ブレーキ付与回路、２１・・・周波数検出回
路、２３・・・ＭＭＶ０Fig. 1 is a block diagram of the currently proposed tracking servo pull-in device, Fig. 2 is a signal waveform diagram showing the operation of the blocks in Fig. 1, Fig. 3 is a block diagram of one embodiment of the present invention, and Fig. 4 This figure is an operational waveform diagram of the block in FIG. 3, and FIG. 5 is a block diagram of another embodiment of the present invention. Explanation of symbols of main parts, 1...Recording track, 2...
・Information detection point, 9...Loop switch, 11...Coil, 12...Tracking mirror, 15...DF
F. 20...Brake application circuit, 21...Frequency detection circuit, 23...MMV0
Claims (1)
する略直交方向の位置を制御するトラッキングサーボ系
置におけるサーボ引込装置であって、前記記録情報検出
点を前記方向に偏倚せしめるトラッキングアクチュエー
タが駆動限界に達した時にトラッキングサーボループを
所定期間間とする手段と、このループ開によって前記記
録情報検出点が偏倚中心位置へ復帰する際の復帰速度を
検出してこの速度に応じて前記トラッキングアクチュエ
ータにブレーキ力を付与する手段とを含み、このブレー
キ力によりトラッキングサーボ系を安、 定に引込
むようにした装置。A servo retraction device in a tracking servo system that controls the position of a recording track and a recording information detection point in a direction substantially perpendicular to the recording track, wherein a tracking actuator that biases the recording information detection point in the direction reaches a drive limit. means for setting the tracking servo loop to a predetermined period when the loop is opened, and detecting the return speed at which the recording information detection point returns to the deviation center position when the loop is opened, and applying a braking force to the tracking actuator in accordance with this speed. A device that uses this braking force to retract a tracking servo system stably and steadily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2698483U JPS59135561U (en) | 1983-02-25 | 1983-02-25 | Tracking servo retraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2698483U JPS59135561U (en) | 1983-02-25 | 1983-02-25 | Tracking servo retraction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59135561U true JPS59135561U (en) | 1984-09-10 |
| JPH0138786Y2 JPH0138786Y2 (en) | 1989-11-20 |
Family
ID=30157884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2698483U Granted JPS59135561U (en) | 1983-02-25 | 1983-02-25 | Tracking servo retraction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59135561U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233342A (en) * | 1985-08-03 | 1987-02-13 | Olympus Optical Co Ltd | Optical information recording and reproducing device |
-
1983
- 1983-02-25 JP JP2698483U patent/JPS59135561U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233342A (en) * | 1985-08-03 | 1987-02-13 | Olympus Optical Co Ltd | Optical information recording and reproducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0138786Y2 (en) | 1989-11-20 |
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