JPH01196738A - Optical recording or reproducing device - Google Patents
Optical recording or reproducing deviceInfo
- Publication number
- JPH01196738A JPH01196738A JP2138388A JP2138388A JPH01196738A JP H01196738 A JPH01196738 A JP H01196738A JP 2138388 A JP2138388 A JP 2138388A JP 2138388 A JP2138388 A JP 2138388A JP H01196738 A JPH01196738 A JP H01196738A
- Authority
- JP
- Japan
- Prior art keywords
- turntable
- optical pickup
- feed mechanism
- frequency component
- optical
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000007723 transport mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光学的記録再生装置において光ディスクに刻印
されたトラックに沿って、光学系より発光したレーザビ
ームをトレースさせるためのトラッキング装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tracking device for tracing a laser beam emitted from an optical system along a track marked on an optical disk in an optical recording/reproducing device.
従来、光学的記録再生装置のトラッキング駆動装置は第
２図のような構成である。Conventionally, a tracking drive device for an optical recording/reproducing device has a configuration as shown in FIG.
図において、ターンテーブル装置１０はターンテーブル
２に載置されたディスクｌをモータ３により駆動して回
転させるもので、偏心が発生すると、光ピックアップ４
からの再生信号からトラッキングエラー検出器７により
、トラッキングエラー信号が生成される。この信号はフ
ィルタ９によって低周波成分及び高周波成分に分配され
、低周波成分は、光ピックアップ送り機構駆動回路８を
介して光ビックアンプ送り機構５に加えられる。In the figure, a turntable device 10 rotates a disk l placed on a turntable 2 by driving it with a motor 3, and when eccentricity occurs, an optical pickup 4
A tracking error signal is generated by the tracking error detector 7 from the reproduced signal from. This signal is divided into a low frequency component and a high frequency component by a filter 9, and the low frequency component is applied to the optical pickup transport mechanism 5 via an optical pickup transport mechanism drive circuit 8.
高周波成分は、光ピックアップ４の対物レンズアクチュ
エータ駆動回路６に加えられて対物レンズをトラックに
追従させる。The high frequency component is applied to the objective lens actuator drive circuit 6 of the optical pickup 4 to cause the objective lens to follow the track.
近来、光学的記録再生装置は光ディスクの回転の高速化
を計り、データ転送速度の高い動画ファイル等に使用さ
れはじめてきた。これによって、偏心の周波数が高くな
り精度の良いトラッキングサーボが困難である。In recent years, optical recording and reproducing devices have been used to speed up the rotation of optical discs, and have begun to be used for video files and the like with high data transfer speeds. This increases the frequency of eccentricity, making it difficult to perform accurate tracking servo.
この為本発明はピックアップとターンテーブルとを光デ
イスク半径方向へ互いに逆方向に移動させるもので、こ
の為光ピックアップ装置を通して検出されたトラッキン
グエラー信号のうち高周波成分を光ビックアンプの対物
レンズアクチュエータへ加え、低周波成分をターンテー
ブル装置と５ピツクアツプ装置に分配してこれらにより
トラッキング制御を行うものである。For this reason, the present invention moves the pickup and turntable in opposite directions in the radial direction of the optical disk, and therefore sends the high frequency component of the tracking error signal detected through the optical pickup device to the objective lens actuator of the optical big amplifier. In addition, low frequency components are distributed to a turntable device and five pickup devices, and tracking control is performed by these devices.
光ピックアップ装置を通して検出されたトラッキングエ
ラー信号のうち低周波成分は、ターンテーブルと光ピッ
クアップとを互いに反対方向へ移動するように制御する
ので各々の移動量は少なくてすみ、高速のトランキング
制御が行われる。The low-frequency component of the tracking error signal detected through the optical pickup device controls the turntable and optical pickup to move in opposite directions, so the amount of movement of each is small, and high-speed trunking control is possible. It will be done.
以下、実施例に従って、本発明の詳細な説明する。第１
図は本発明の一実施例を示すものである。Hereinafter, the present invention will be described in detail according to examples. 1st
The figure shows one embodiment of the invention.
第２図の従来例と同様の部分には同一の符号を付してそ
の説明を省略する。ディスク１の回転に伴って偏心が発
生すると、前述と同様にトラッキングエラー検出器７か
らトラッキングエラー信号が生成され、この信号の高周
波成分は、光ピックアップ４１力勃ムしス゛を駆動し、
低周波成分は所定の分配値によって、ターンテーブル送
り機構駆動回路１４を介してターンテーブル送り機構１
３を駆動すると共に、光ピックアップ送り機構駆動回路
８を介してピックアップ送り機構５をターンテーブル１
とは逆方向に駆動する。Components similar to those of the conventional example shown in FIG. 2 are given the same reference numerals, and their explanation will be omitted. When eccentricity occurs as the disk 1 rotates, a tracking error signal is generated from the tracking error detector 7 in the same way as described above, and the high frequency component of this signal powers the optical pickup 41 and drives the disk.
The low frequency component is transmitted to the turntable feed mechanism 1 via the turntable feed mechanism drive circuit 14 according to a predetermined distribution value.
At the same time, the pickup feeding mechanism 5 is driven to the turntable 1 via the optical pickup feeding mechanism driving circuit 8.
Drive in the opposite direction.
一例として上記低周波成分を光ピックアップ及びターン
テーブル送り機構５及び１３に対してそれぞれ半分づつ
加え、各々に対する送り動作を相反する方向へ同じ量だ
け移動する様にするとよい。As an example, it is preferable to add half of the above-mentioned low frequency component to each of the optical pickup and turntable transport mechanisms 5 and 13 so that the transport operations for each are made to move the same amount in opposite directions.
上述のように、光ピックアップ４内の対物レンズアクチ
ュエータ、光ピックアップ送り機構５及びターンテーブ
ル送り機構１３の各々を制御して光ディスクのトラッキ
ングを行う。As described above, the objective lens actuator in the optical pickup 4, the optical pickup transport mechanism 5, and the turntable transport mechanism 13 are controlled to track the optical disc.
以上のように、ターンテーブルをピックアップと逆方向
に送り制御するので、スピンドルモータの回転数が高速
になり、偏心の周波数が高くなっても、単位時間当たり
の各送り機構の移動距離が低減されて、高速かつ精度の
良いサーボループを構成゛することができる。As described above, since the turntable is controlled to feed in the opposite direction to the pickup, even if the spindle motor rotation speed increases and the eccentricity frequency increases, the travel distance of each feeding mechanism per unit time is reduced. As a result, a high-speed and highly accurate servo loop can be constructed.
第１図は本発明の光学的記録再生装置のトラッキング駆
動装置を示す図、第２図は従来の光学的記録再生装置の
トラッキング装置を示す図である。
１・・・光ディスク
２・・・ターンテーブル
３・・・スピンドルモータ
４・・・光ピックアップ
５・・・光ピックアップ送り機構
６・・・対物レンズアクチュエータ駆動回路７・・・ト
ラッキングエラー検出器
８・・・光ピックアップ送り機構駆動回路９・・・フィ
ルタ
１０・・・ターンテーブル装置
１２・・・分配器
１３・・・ターンテーブル送り機構FIG. 1 is a diagram showing a tracking drive device of an optical recording/reproducing apparatus according to the present invention, and FIG. 2 is a diagram showing a tracking device of a conventional optical recording/reproducing apparatus. 1... Optical disc 2... Turntable 3... Spindle motor 4... Optical pickup 5... Optical pickup feeding mechanism 6... Objective lens actuator drive circuit 7... Tracking error detector 8. ...Optical pickup feed mechanism drive circuit 9...Filter 10...Turntable device 12...Distributor 13...Turntable feed mechanism
Claims (1)
ブルを回転するスピンドルモータと、上記光ディスクの
記録又は再生を行なう光ピックアップとを有し、トラッ
キングエラー信号に応じて上記光ピックアップをトラッ
キング制御する光学的記録再生装置において、上記トラ
ッキング信号を低周波及び高周波成分に分離する手段と
、該高周波成分に応じて上記光ピックアップの対物レン
ズを駆動する手段と、上記低周波成分に応じて上記ピッ
クアップ送り機構及びターンテーブル送り機構を互いに
反対方向へ駆動する手段とを有することを特徴とする光
学的記録又は再生装置。Optical recording comprising a turntable on which an optical disk is placed, a spindle motor for rotating the turntable, and an optical pickup for recording or reproducing the optical disk, and for controlling tracking of the optical pickup according to a tracking error signal. In the reproducing device, means for separating the tracking signal into low frequency and high frequency components, means for driving the objective lens of the optical pickup according to the high frequency component, and means for driving the pickup feeding mechanism and turning according to the low frequency component. and means for driving the table feeding mechanisms in mutually opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63021383A JPH0661138B2 (en) | 1988-02-02 | 1988-02-02 | Optical disk tracking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63021383A JPH0661138B2 (en) | 1988-02-02 | 1988-02-02 | Optical disk tracking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01196738A true JPH01196738A (en) | 1989-08-08 |
| JPH0661138B2 JPH0661138B2 (en) | 1994-08-10 |
Family
ID=12053567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63021383A Expired - Lifetime JPH0661138B2 (en) | 1988-02-02 | 1988-02-02 | Optical disk tracking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0661138B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0457230A (en) * | 1990-06-21 | 1992-02-25 | Fuji Xerox Co Ltd | Floating type optical head |
| USRE37401E1 (en) | 1990-05-09 | 2001-10-02 | Fujitsu Limited | Fault recovery system of a ring network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141373U (en) * | 1979-03-28 | 1980-10-09 | ||
| JPS5824849A (en) * | 1981-11-06 | 1983-02-14 | Sumitomo Rubber Ind Ltd | Measuring device for reacting amount and measuring and controlling device for reacting amount |
| JPS62102429A (en) * | 1985-10-28 | 1987-05-12 | Ricoh Co Ltd | Group center detection method for optical disk |
-
1988
- 1988-02-02 JP JP63021383A patent/JPH0661138B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55141373U (en) * | 1979-03-28 | 1980-10-09 | ||
| JPS5824849A (en) * | 1981-11-06 | 1983-02-14 | Sumitomo Rubber Ind Ltd | Measuring device for reacting amount and measuring and controlling device for reacting amount |
| JPS62102429A (en) * | 1985-10-28 | 1987-05-12 | Ricoh Co Ltd | Group center detection method for optical disk |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE37401E1 (en) | 1990-05-09 | 2001-10-02 | Fujitsu Limited | Fault recovery system of a ring network |
| JPH0457230A (en) * | 1990-06-21 | 1992-02-25 | Fuji Xerox Co Ltd | Floating type optical head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0661138B2 (en) | 1994-08-10 |
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