JPH0724111B2 - 光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路 - Google Patents

光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路

Info

Publication number
JPH0724111B2
JPH0724111B2 JP61189007A JP18900786A JPH0724111B2 JP H0724111 B2 JPH0724111 B2 JP H0724111B2 JP 61189007 A JP61189007 A JP 61189007A JP 18900786 A JP18900786 A JP 18900786A JP H0724111 B2 JPH0724111 B2 JP H0724111B2
Authority
JP
Japan
Prior art keywords
focus
objective lens
circuit
signal
focus 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.)
Expired - Lifetime
Application number
JP61189007A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6344324A (ja
Inventor
泰弘 林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP61189007A priority Critical patent/JPH0724111B2/ja
Priority to KR1019870008734A priority patent/KR950014832B1/ko
Publication of JPS6344324A publication Critical patent/JPS6344324A/ja
Priority to US07/633,170 priority patent/US5124964A/en
Publication of JPH0724111B2 publication Critical patent/JPH0724111B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)
JP61189007A 1986-08-12 1986-08-12 光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路 Expired - Lifetime JPH0724111B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP61189007A JPH0724111B2 (ja) 1986-08-12 1986-08-12 光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路
KR1019870008734A KR950014832B1 (ko) 1986-08-12 1987-08-10 광학식 디스크재생장치의 촛점서어보이득 조정회로
US07/633,170 US5124964A (en) 1986-08-12 1990-12-28 Focus servo gain setting circuit for optical record disc reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61189007A JPH0724111B2 (ja) 1986-08-12 1986-08-12 光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路

Publications (2)

Publication Number Publication Date
JPS6344324A JPS6344324A (ja) 1988-02-25
JPH0724111B2 true JPH0724111B2 (ja) 1995-03-15

Family

ID=16233738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61189007A Expired - Lifetime JPH0724111B2 (ja) 1986-08-12 1986-08-12 光学式デイスク再生装置のフオ−カスサ−ボゲイン調整回路

Country Status (2)

Country Link
JP (1) JPH0724111B2 (ko)
KR (1) KR950014832B1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02246026A (ja) * 1989-03-18 1990-10-01 Pioneer Electron Corp フォーカスサーボループのループゲイン設定方法
KR20040031533A (ko) 2002-10-07 2004-04-13 삼성전자주식회사 적응적인 포커싱 방법 및 장치
JP4659348B2 (ja) * 2003-08-22 2011-03-30 パイオニア株式会社 光ピックアップ装置及び光記録媒体再生装置

Also Published As

Publication number Publication date
JPS6344324A (ja) 1988-02-25
KR950014832B1 (ko) 1995-12-15
KR880003295A (ko) 1988-05-16

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