JPS61105917U - - Google Patents
Info
- Publication number
- JPS61105917U JPS61105917U JP18985884U JP18985884U JPS61105917U JP S61105917 U JPS61105917 U JP S61105917U JP 18985884 U JP18985884 U JP 18985884U JP 18985884 U JP18985884 U JP 18985884U JP S61105917 U JPS61105917 U JP S61105917U
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- auto
- tracking
- tracking servo
- shooting
- 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
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Description
第１図は、この考案の一実施例である光学式デ
イスク装置の要部の概略構成のブロツク図、第２
図はフオーカス及びトラツキングアクチユエータ
の一例を詳細に示す部分平面図及び断面図、第３
図はこの考案にかかるトラツキングアクチユエー
タを駆動する駆動制御回路を示す回路図、第４図
はこの考案のオートトラツキングサーボ装置の動
作を概略的に示す動作説明図である。
図において、１……デイスク、２……デイスク
モータ、４……フオーカス及びトラツキングアク
チユエータ、６……キヤリツジ、７……リニアモ
ータ、８……トラツキングアクチユエータ駆動制
御回路、９……フオーカスアクチユエータ駆動制
御回路、１０……処理回路、３０４……アクチユ
エータコイル、３０５……シヨート回路、である
。なお、図中、同一符号及び同一記号は、同一ま
たは相当部分を示す。
FIG. 1 is a block diagram of a schematic configuration of the main parts of an optical disk device that is an embodiment of this invention, and FIG.
The figures are a partial plan view and a cross-sectional view showing an example of a focus and tracking actuator in detail;
FIG. 4 is a circuit diagram showing a drive control circuit for driving the tracking actuator according to this invention, and FIG. 4 is an operation explanatory diagram schematically showing the operation of the auto-tracking servo device according to this invention. In the figure, 1... Disc, 2... Disk motor, 4... Focus and tracking actuator, 6... Carriage, 7... Linear motor, 8... Tracking actuator drive control circuit, 9... ... focus actuator drive control circuit, 10 ... processing circuit, 304 ... actuator coil, 305 ... shot circuit. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.
Claims (1)
学ヘツドの照射光束がトラツキングするオートト
ラツキング装置を備えた光学ヘツドを移動させて
検索を行う光学式デイスク装置において、前記オ
ートトラツキングサーボ装置のトラツキングアク
チユエータコイルをシヨートするシヨート手段と
検索の際の光学ヘツドの移動開始時の準備時間及
び移動終了時の整定時間を計時するタイマー手段
と、前記タイマー手段が前記準備時間及び前記整
定時間を計時している間は前記シヨート手段に制
御信号を出力してシヨート手段を動作させる制御
手段と、検索の際の光学ヘツドの移動中は、トラ
ツキングアクチユエータコイルに所定量の電流を
流してトラツキングアクチユエータをロツクする
ロツク手段とを備えたことを特徴とするオートト
ラツキングサーボ装置。 (2) 前記ロツク手段が光学ヘツドの移動中にト
ラツキングアクチユエータコイルに流す電流は、
光学ヘツドにかかる加速度に対応したものである
ことを特徴とする前記実用新案登録請求の範囲第
(1)項に記載のオートトラツキングサーボ装置。 (3) 前記ロツク手段が光学ヘツドの移動中にト
ラツキングアクチユエータコイルに流す電流は、
光学ヘツドを移動するキヤリツジを駆動する電流
から得ることを特徴とする前記実用新案登録請求
の範囲第１項に記載のオートトラツキングサーボ
装置。 (4) 前記タイマー手段が計時する光学ヘツドの
移動開始時の準備時間は、零もしくは非常に短い
時間であることを特徴とする前記実用新案登録請
求の範囲第１項に記載のオートトラツキングサー
ボ装置。[Claims for Utility Model Registration] (1) In an optical disk device that performs a search by moving an optical head, which is equipped with an auto-tracking device in which the irradiated light beam of the optical head tracks the recording track on the information recording surface of the recording medium. , a shooting means for shooting a tracking actuator coil of the auto-tracking servo device, a timer means for measuring a preparation time at the start of movement of the optical head during a search and a settling time at the end of the movement, and the timer means. a control means for outputting a control signal to the shooting means to operate the shooting means while the optical head is measuring the preparation time and the settling time; and a tracking actuator for operating the shooting means while the optical head is moving during a search. An auto-tracking servo device comprising a locking means for locking a tracking actuator by passing a predetermined amount of current through a coil. (2) The current that the locking means causes to flow through the tracking actuator coil while the optical head is moving is:
The utility model registration claim No. 1 is characterized in that it corresponds to the acceleration applied to the optical head.
The auto-tracking servo device described in (1). (3) The current that the locking means causes to flow through the tracking actuator coil while the optical head is moving is:
The auto-tracking servo device according to claim 1, wherein the auto-tracking servo device is obtained from a current that drives a carriage that moves the optical head. (4) The auto-tracking servo according to claim 1, wherein the preparation time at the start of movement of the optical head measured by the timer means is zero or a very short time. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18985884U JPS61105917U (en) | 1984-12-14 | 1984-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18985884U JPS61105917U (en) | 1984-12-14 | 1984-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61105917U true JPS61105917U (en) | 1986-07-05 |
Family
ID=30747307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18985884U Pending JPS61105917U (en) | 1984-12-14 | 1984-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61105917U (en) |
-
1984
- 1984-12-14 JP JP18985884U patent/JPS61105917U/ja active Pending
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