JPS645376B2 - - Google Patents

Info

Publication number
JPS645376B2
JPS645376B2 JP8593181A JP8593181A JPS645376B2 JP S645376 B2 JPS645376 B2 JP S645376B2 JP 8593181 A JP8593181 A JP 8593181A JP 8593181 A JP8593181 A JP 8593181A JP S645376 B2 JPS645376 B2 JP S645376B2
Authority
JP
Japan
Prior art keywords
tracking error
signal
light
error signal
target object
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
Application number
JP8593181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57199903A (en
Inventor
Tsuneo Hirose
Shinichi Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8593181A priority Critical patent/JPS57199903A/ja
Publication of JPS57199903A publication Critical patent/JPS57199903A/ja
Publication of JPS645376B2 publication Critical patent/JPS645376B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Length Measuring Devices By Optical Means (AREA)
JP8593181A 1981-06-03 1981-06-03 Position detector Granted JPS57199903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8593181A JPS57199903A (en) 1981-06-03 1981-06-03 Position detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8593181A JPS57199903A (en) 1981-06-03 1981-06-03 Position detector

Publications (2)

Publication Number Publication Date
JPS57199903A JPS57199903A (en) 1982-12-08
JPS645376B2 true JPS645376B2 (en, 2012) 1989-01-30

Family

ID=13872498

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8593181A Granted JPS57199903A (en) 1981-06-03 1981-06-03 Position detector

Country Status (1)

Country Link
JP (1) JPS57199903A (en, 2012)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848243A (ja) * 1981-09-17 1983-03-22 Mitsubishi Electric Corp 光学的記録再生装置のトラツク追跡装置
JPS58194146A (ja) * 1982-04-30 1983-11-12 Sharp Corp 光学式デイスクプレ−ヤにおけるトラツキング制御装置
JPS60170037A (ja) * 1984-02-13 1985-09-03 Toshiba Corp トラツキング誤差信号生成方法
US5179268A (en) * 1987-07-22 1993-01-12 Omron Tateisi Electronic Co. Apparatus for detecting inclination of an optical card
JPH0254969A (ja) * 1988-08-19 1990-02-23 Fuji Electric Co Ltd Ｍｏｓ型半導体装置
JPH0254858A (ja) * 1988-08-19 1990-02-23 Fuji Electric Co Ltd イオンビーム中性化装置
JPH0254857A (ja) * 1988-08-19 1990-02-23 Fuji Electric Co Ltd イオンビーム中性化装置
JP2755611B2 (ja) * 1988-09-16 1998-05-20 三洋電機株式会社 溶融炭酸塩燃料電池
JP2680628B2 (ja) * 1988-09-16 1997-11-19 三洋電機株式会社 水素吸蔵合金電極及びその電極を備えた密閉型アルカリ蓄電池
JP2867360B2 (ja) * 1996-08-05 1999-03-08 株式会社日立製作所 光ディスク装置
JP2785816B2 (ja) * 1996-08-05 1998-08-13 株式会社日立製作所 光ディスク装置
JP2785815B2 (ja) * 1996-08-05 1998-08-13 株式会社日立製作所 光ディスク装置
JP2867361B2 (ja) * 1996-09-03 1999-03-08 株式会社日立製作所 光ディスク装置用ピックアップ
JPH09128774A (ja) * 1996-09-03 1997-05-16 Hitachi Ltd 光ディスク装置
JP4772989B2 (ja) * 2001-06-14 2011-09-14 三星電子株式会社 光ディスク記録装置及びそのトラックオフセット制御方法

Also Published As

Publication number Publication date
JPS57199903A (en) 1982-12-08

Similar Documents

Publication Publication Date Title
JPS645376B2 (en, 2012)
US4815060A (en) Optical pickup device with tracking and focusing utilizing a photodetector having four regions
JPH0142054B2 (en, 2012)
JPH06101127B2 (ja) 光学ヘツド
US5231621A (en) Focus detector which serves to split off a portion of a detected light beam only when the detected light beam is not refocused at an expected refocus point
US6909687B2 (en) Optical pickup with a diffraction element consist of six regions providing spatial variation corresponding to a focas state
CA2040787C (en) Optical pickup device
JPS6223376B2 (en, 2012)
JPS6260732B2 (en, 2012)
JPS6331858B2 (en, 2012)
US6347066B1 (en) Optical pickup and optical disk apparatus
JPS6215865Y2 (en, 2012)
KR900008405B1 (ko) 광학식 헤드 장치
JP2664386B2 (ja) 光学的情報記録再生装置
WO2003105143A1 (ja) 傾き検出装置、光ヘッド、光情報処理装置、コンピュータ、映像記録装置、映像再生装置、及びカーナビゲーションシステム
JP3222280B2 (ja) 光ピックアップ装置
JP2614504B2 (ja) トラッキングエラー検出方法
JPS5856235A (ja) 光学的トラツク追跡装置
JPH0580051B2 (en, 2012)
JPH0729188A (ja) トラッキングエラー検出方法
JPS60247832A (ja) トラツキング誤差検出装置
JPS60239937A (ja) 光情報検出装置
JPH05234114A (ja) 光ピックアップ
JPH03116549A (ja) 焦点制御装置
JPS58158046A (ja) 焦点制御装置