JPS6118811B2 - - Google Patents

Info

Publication number
JPS6118811B2
JPS6118811B2 JP53093334A JP9333478A JPS6118811B2 JP S6118811 B2 JPS6118811 B2 JP S6118811B2 JP 53093334 A JP53093334 A JP 53093334A JP 9333478 A JP9333478 A JP 9333478A JP S6118811 B2 JPS6118811 B2 JP S6118811B2
Authority
JP
Japan
Prior art keywords
output
interval
recording medium
signal
photodetector
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
JP53093334A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5522235A (en
Inventor
Tadao Nagai
Juji Tsuyukuchi
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.)
Teac Corp
Original Assignee
Teac 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 Teac Corp filed Critical Teac Corp
Priority to JP9333478A priority Critical patent/JPS5522235A/ja
Publication of JPS5522235A publication Critical patent/JPS5522235A/ja
Publication of JPS6118811B2 publication Critical patent/JPS6118811B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP9333478A 1978-07-31 1978-07-31 Optical reproducing device Granted JPS5522235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9333478A JPS5522235A (en) 1978-07-31 1978-07-31 Optical reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9333478A JPS5522235A (en) 1978-07-31 1978-07-31 Optical reproducing device

Publications (2)

Publication Number Publication Date
JPS5522235A JPS5522235A (en) 1980-02-16
JPS6118811B2 true JPS6118811B2 (enrdf_load_stackoverflow) 1986-05-14

Family

ID=14079363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9333478A Granted JPS5522235A (en) 1978-07-31 1978-07-31 Optical reproducing device

Country Status (1)

Country Link
JP (1) JPS5522235A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4607157A (en) * 1984-02-09 1986-08-19 Xerox Corporation Automatic focus offset correction system
JPH0610490Y2 (ja) * 1987-11-26 1994-03-16 パイオニア株式会社 光学式情報読取装置

Also Published As

Publication number Publication date
JPS5522235A (en) 1980-02-16

Similar Documents

Publication Publication Date Title
US4686663A (en) Track follower system employing an optical scanner with automatic control of a rotatably movable phase grating used for the generation and positioning of read beam spots
JP2911449B2 (ja) 光学式情報読取装置
JPS606014B2 (ja) 情報検出装置
US6643230B2 (en) Optical information reproducing apparatus
JPS6032264B2 (ja) 光学的再生装置
JPS6223372B2 (enrdf_load_stackoverflow)
JPS5931129B2 (ja) 光学的再生装置
JPS588054B2 (ja) 光学的再生装置
JPS6118811B2 (enrdf_load_stackoverflow)
JPS60121578A (ja) トラッキング制御装置
JPH0612595B2 (ja) 制御装置
JPS5935874Y2 (ja) 光学式再生装置
JPS6019569B2 (ja) 光学式再生装置
JPS6017061Y2 (ja) 光学式デイスク再生装置のフオ−カス制御回路
US4775965A (en) Optical system for recording, reproducing, and/or erasing information
JPS5883338A (ja) 光学的情報記録装置における記録用光ビームの最適フオーカス状態を得るための方法
JP2607070B2 (ja) 情報記録再生装置
JP2594903B2 (ja) 焦点誤差検出装置
JPH0239021B2 (ja) Kogakushikisaiseisochi
JP4520906B2 (ja) タンジェンシャルチルト検出装置および光ディスク装置
JPS61139950A (ja) 光ヘツド
JPS6025947B2 (ja) 光学的再生装置
JPS61153838A (ja) 光学式情報記録再生装置
JPS6152533B2 (enrdf_load_stackoverflow)
JPS63100624A (ja) 光学的再生装置