JPS5917071U - Tracking servo retraction device - Google Patents

Tracking servo retraction device

Info

Publication number
JPS5917071U
JPS5917071U JP10977882U JP10977882U JPS5917071U JP S5917071 U JPS5917071 U JP S5917071U JP 10977882 U JP10977882 U JP 10977882U JP 10977882 U JP10977882 U JP 10977882U JP S5917071 U JPS5917071 U JP S5917071U
Authority
JP
Japan
Prior art keywords
tracking servo
loop
control means
information detection
detection point
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
Application number
JP10977882U
Other languages
Japanese (ja)
Inventor
昌義 吉田
Original Assignee
パイオニア株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP10977882U priority Critical patent/JPS5917071U/en
Publication of JPS5917071U publication Critical patent/JPS5917071U/en
Pending legal-status Critical Current

Links

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例のブロック図、第２図は第１図
の装置の動作を示す図である。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing the operation of the apparatus shown in FIG.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）記録トラックと記録情報検出点との該トラックに
対する略直交方向の位置を制御するトラッキングサーボ
装置におけるサーボ引込装置であって、前記記録トラッ
クと前記記録情報検出点との間の距離が増大しつつある
ことを検出してその間トラッキングサーボループを閉と
し、他の期間は該ループを開とする制御手段を有し、こ
の制御手段によるループ開閉制御動作によってトラッキ
ングサーボ系を引込むようにした装置。(1) A servo retracting device in a tracking servo device that controls the position of a recording track and a recording information detection point in a direction substantially orthogonal to the track, wherein the distance between the recording track and the recording information detection point increases. The device has a control means for detecting that the tracking servo loop is being moved and closes the tracking servo loop during the period, and opens the loop for other periods, and the tracking servo system is retracted by the loop opening/closing control operation by the control means. （２）前記制御手段は、前記トラッキング信号の相隣る
ゼロクロス点間における前記記録情報検出点による再生
信号のエンベロープレベルの変化状態を検出して前記距
離の増大を判別するよう構成されていることを特徴とす
る実用新案登録請求の範囲第１項記載の装置。(2) The control means is configured to determine an increase in the distance by detecting a state of change in the envelope level of the reproduced signal at the recording information detection point between adjacent zero-crossing points of the tracking signal. The device according to claim 1 of the utility model registration claim, characterized in that:
JP10977882U 1982-07-20 1982-07-20 Tracking servo retraction device Pending JPS5917071U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10977882U JPS5917071U (en) 1982-07-20 1982-07-20 Tracking servo retraction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10977882U JPS5917071U (en) 1982-07-20 1982-07-20 Tracking servo retraction device

Publications (1)

Publication Number Publication Date
JPS5917071U true JPS5917071U (en) 1984-02-01

Family

ID=30255588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10977882U Pending JPS5917071U (en) 1982-07-20 1982-07-20 Tracking servo retraction device

Country Status (1)

Country Link
JP (1) JPS5917071U (en)

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