JPS6341137B2 - - Google Patents

Info

Publication number
JPS6341137B2
JPS6341137B2 JP57145704A JP14570482A JPS6341137B2 JP S6341137 B2 JPS6341137 B2 JP S6341137B2 JP 57145704 A JP57145704 A JP 57145704A JP 14570482 A JP14570482 A JP 14570482A JP S6341137 B2 JPS6341137 B2 JP S6341137B2
Authority
JP
Japan
Prior art keywords
signal
detection means
focus
track
spot
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
JP57145704A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5936333A (ja
Inventor
Osamu Ito
Masahiro Daimon
Seio Watanabe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14570482A priority Critical patent/JPS5936333A/ja
Publication of JPS5936333A publication Critical patent/JPS5936333A/ja
Publication of JPS6341137B2 publication Critical patent/JPS6341137B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP14570482A 1982-08-23 1982-08-23 オ−トフオ−カスサ−ボ回路 Granted JPS5936333A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14570482A JPS5936333A (ja) 1982-08-23 1982-08-23 オ−トフオ−カスサ−ボ回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14570482A JPS5936333A (ja) 1982-08-23 1982-08-23 オ−トフオ−カスサ−ボ回路

Publications (2)

Publication Number Publication Date
JPS5936333A JPS5936333A (ja) 1984-02-28
JPS6341137B2 true JPS6341137B2 (enrdf_load_stackoverflow) 1988-08-16

Family

ID=15391180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14570482A Granted JPS5936333A (ja) 1982-08-23 1982-08-23 オ−トフオ−カスサ−ボ回路

Country Status (1)

Country Link
JP (1) JPS5936333A (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606014B2 (ja) * 1976-10-07 1985-02-15 ソニー株式会社 情報検出装置
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device

Also Published As

Publication number Publication date
JPS5936333A (ja) 1984-02-28

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