JPS6215Y2 - - Google Patents

Info

Publication number
JPS6215Y2
JPS6215Y2 JP1440681U JP1440681U JPS6215Y2 JP S6215 Y2 JPS6215 Y2 JP S6215Y2 JP 1440681 U JP1440681 U JP 1440681U JP 1440681 U JP1440681 U JP 1440681U JP S6215 Y2 JPS6215 Y2 JP S6215Y2
Authority
JP
Japan
Prior art keywords
laser
recording
focus
focus servo
disk
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
JP1440681U
Other languages
English (en)
Japanese (ja)
Other versions
JPS57129237U (en]
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 JP1440681U priority Critical patent/JPS6215Y2/ja
Publication of JPS57129237U publication Critical patent/JPS57129237U/ja
Application granted granted Critical
Publication of JPS6215Y2 publication Critical patent/JPS6215Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP1440681U 1981-02-05 1981-02-05 Expired JPS6215Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1440681U JPS6215Y2 (en]) 1981-02-05 1981-02-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1440681U JPS6215Y2 (en]) 1981-02-05 1981-02-05

Publications (2)

Publication Number Publication Date
JPS57129237U JPS57129237U (en]) 1982-08-12
JPS6215Y2 true JPS6215Y2 (en]) 1987-01-06

Family

ID=29812454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1440681U Expired JPS6215Y2 (en]) 1981-02-05 1981-02-05

Country Status (1)

Country Link
JP (1) JPS6215Y2 (en])

Also Published As

Publication number Publication date
JPS57129237U (en]) 1982-08-12

Similar Documents

Publication Publication Date Title
US4924455A (en) Apparatus for generating tracking error signals in a differential phase detection system
US4935913A (en) Optical information recording and reproducing apparatus
EP0317535A3 (en) Detector for magnetooptic recorders
KR890005678A (ko) 광학스캐닝장치
US5105409A (en) Method and apparatus for optical recording and reproduction with tracking servo reducing track offset
JPS6215Y2 (en])
JPH0221053B2 (en])
JP2701392B2 (ja) フオーカスエラー検出回路
JPS6318354B2 (en])
JPH0573913A (ja) 光学的情報記録再生装置
KR920702529A (ko) 자기 광학 기록 및 재생장치
JPS6223378B2 (en])
JPS5817970B2 (ja) リツタイオンキヨウエンバンレコ−ドニオケル キロクシンゴウノ コウガクテキヨミトリホウシキ
JPH0538469Y2 (en])
JPS6053373B2 (ja) 画像信号の再生光パワ−ドリフト制御方法
KR910002438Y1 (ko) 콤팩트 디스크 결함 검출회로
JPH06150358A (ja) マルチビーム光ピックアップの光量検出装置
JPS583140A (ja) 光学的情報記録・再生装置における焦点制御信号検出装置
JPS624775B2 (en])
JPS5887145U (ja) 情報再生装置のトラツク追跡制御信号検出回路
JPS6186825U (en])
JPS5849330U (ja) 情報再生装置の焦点制御信号検出回路
JPS5817630U (ja) 光ピツクアツプ装置
JPS62267933A (ja) 光学情報記録再生装置
JPS61206939A (ja) 光学的情報記録装置