JPS6064416U - Recorded information reading device - Google Patents
Recorded information reading deviceInfo
- Publication number
- JPS6064416U JPS6064416U JP15416783U JP15416783U JPS6064416U JP S6064416 U JPS6064416 U JP S6064416U JP 15416783 U JP15416783 U JP 15416783U JP 15416783 U JP15416783 U JP 15416783U JP S6064416 U JPS6064416 U JP S6064416U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- actuator
- frequency
- low
- servo
- 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
Landscapes
- Optical Recording Or Reproduction (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図はトラッキングミーボ系の一ブロック図、第２図
は従来のＬＰＦの周波数特性とトラッキングアタチュエ
ータの周波数特性を示す図、第３図は従来の装置におけ
るトラッキングミラ−ユ −エータの機械的偏倚
位置と位置検出信号との関係の一例を示す図、第４図は
本考案によるＬＰＦの ゛周波数特性の一例を示す図
、第５−は本考案によるＬＰＦの一例の回路図である。
主要部分の符号の説明、１・・・・・・エラー信号発生
器、３・・・・・・ループスイッチ、５・・・・・・ト
ラッキング ・アクチュエータ、７・・・・・・Ｌ
！Ｆ、５２・・・・・・トラッキングミラー。Figure 1 is a block diagram of a tracking mirror system, Figure 2 is a diagram showing the frequency characteristics of a conventional LPF and the frequency characteristics of a tracking attuator, and Figure 3 is a mechanical diagram of a tracking mirror unit in a conventional device. FIG. 4 is a diagram showing an example of the frequency characteristic of the LPF according to the present invention. FIG. 5 is a circuit diagram of an example of the LPF according to the present invention. Explanation of symbols of main parts, 1...Error signal generator, 3...Loop switch, 5...Tracking actuator, 7...L
! F, 52...Tracking mirror.
Claims (2)
アクチュエー゛夕、をサーボエラー信号に応じて駆動す
るよう構成されたサーボ手段と、前記アクチュエータの
駆動信号の絶対値し、ベルが所定値を越えたときに前記
サーボ手段のサーボループを断とする信号を発生する信
号発生手段とを有する記録情報読取装置であって、前記
信号発生手段は前記駆動信号を入力とするローパスフィ
ルタを有し、このローパスフィルタめ周波数対位相特性
が、前記駆動信号の少な（とも主要周波数を含む帯域に
おいて前記アクチュエー゛夕の周波数対位相特性に略近
似してい羞ことを特徴とする装置。 −(1) A servo means configured to drive an actuator that shifts a recorded information detection point on a recording surface in accordance with a servo error signal, and a servo means configured to drive an actuator that shifts a recording information detection point on a recording surface, and a bell that is set to a predetermined value based on the absolute value of the drive signal of the actuator. a signal generating means for generating a signal that breaks the servo loop of the servo means when the drive signal is exceeded, the signal generating means having a low-pass filter inputting the drive signal; An apparatus characterized in that the frequency vs. phase characteristic of the low-pass filter is substantially close to the frequency vs. phase characteristic of the actuator in a band including a low (or main) frequency of the drive signal.
の低域であ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 device according to claim 1, wherein the band is a low band that includes the rotational frequency of the recording medium and is less than or equal to the rotational frequency of the recording medium. −
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15416783U JPS6064416U (en) | 1983-10-04 | 1983-10-04 | Recorded information reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15416783U JPS6064416U (en) | 1983-10-04 | 1983-10-04 | Recorded information reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6064416U true JPS6064416U (en) | 1985-05-07 |
Family
ID=30340871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15416783U Pending JPS6064416U (en) | 1983-10-04 | 1983-10-04 | Recorded information reading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6064416U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538686A (en) * | 1978-09-13 | 1980-03-18 | Pioneer Video Corp | Tracking controller of optical information reader |
| JPS57147143A (en) * | 1981-03-07 | 1982-09-10 | Olympus Optical Co Ltd | Objective lens driving device |
-
1983
- 1983-10-04 JP JP15416783U patent/JPS6064416U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538686A (en) * | 1978-09-13 | 1980-03-18 | Pioneer Video Corp | Tracking controller of optical information reader |
| JPS57147143A (en) * | 1981-03-07 | 1982-09-10 | Olympus Optical Co Ltd | Objective lens driving device |
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