JPS6431507U - - Google Patents

Info

Publication number
JPS6431507U
JPS6431507U JP12435487U JP12435487U JPS6431507U JP S6431507 U JPS6431507 U JP S6431507U JP 12435487 U JP12435487 U JP 12435487U JP 12435487 U JP12435487 U JP 12435487U JP S6431507 U JPS6431507 U JP S6431507U
Authority
JP
Japan
Prior art keywords
actuator
seek operation
optical disk
coarse
fine
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
Application number
JP12435487U
Other languages
English (en)
Other versions
JPH0521699Y2 (ja
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 filed Critical
Priority to JP1987124354U priority Critical patent/JPH0521699Y2/ja
Publication of JPS6431507U publication Critical patent/JPS6431507U/ja
Application granted granted Critical
Publication of JPH0521699Y2 publication Critical patent/JPH0521699Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示すブロツク図、
第２図はその動作の説明に供する特性曲線図、第
３図は従来の微アクチユエータの駆動電圧及び微
アクチユエータの変位の関係を示す特性曲線図で
ある。 １…トラツキングサーボ回路、２，９…位相補
償回路、３，４，１０…スイツチ回路、５…演算
増幅回路、６，１１…駆動回路、７…微アクチユ
エータ、１２…粗アクチユエータ。

Claims (1)

  1. 【実用新案登録請求の範囲】 微アクチユエータ及び粗アクチユエータを用い
    て光ヘツドを光デイスク上の所定の記録トラツク
    にトラツキング制御すると共に、上記粗アクチユ
    エータを用いて上記光ヘツドをシーク動作する光
    デイスク装置において、 上記微アクチユエータを制御するフオーカスサ
    ーボ回路は、上記粗アクチユエータによるシーク
    動作中に、上記微アクチユエータに当該シーク動
    作前に保持した直流電圧を供給するようにした ことを特徴とする光デイスク装置。
JP1987124354U 1987-08-14 1987-08-14 Expired - Lifetime JPH0521699Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987124354U JPH0521699Y2 (ja) 1987-08-14 1987-08-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987124354U JPH0521699Y2 (ja) 1987-08-14 1987-08-14

Publications (2)

Publication Number Publication Date
JPS6431507U true JPS6431507U (ja) 1989-02-27
JPH0521699Y2 JPH0521699Y2 (ja) 1993-06-03

Family

ID=31374007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987124354U Expired - Lifetime JPH0521699Y2 (ja) 1987-08-14 1987-08-14

Country Status (1)

Country Link
JP (1) JPH0521699Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057544A (ja) * 1983-09-07 1985-04-03 Hitachi Ltd 光学式記録再生装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057544A (ja) * 1983-09-07 1985-04-03 Hitachi Ltd 光学式記録再生装置

Also Published As

Publication number Publication date
JPH0521699Y2 (ja) 1993-06-03

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