JPS5936333A - オ−トフオ−カスサ−ボ回路 - Google Patents

オ−トフオ−カスサ−ボ回路

Info

Publication number
JPS5936333A
JPS5936333A JP14570482A JP14570482A JPS5936333A JP S5936333 A JPS5936333 A JP S5936333A JP 14570482 A JP14570482 A JP 14570482A JP 14570482 A JP14570482 A JP 14570482A JP S5936333 A JPS5936333 A JP S5936333A
Authority
JP
Japan
Prior art keywords
error signal
signal
photodetector
amplifier
focus error
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.)
Granted
Application number
JP14570482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6341137B2 (https=
Inventor
Osamu Ito
修 伊藤
Masahiro Daimon
大門　正博
Seio Watanabe
渡辺　勢夫
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 true JPS5936333A (ja) 1984-02-28
JPS6341137B2 JPS6341137B2 (https=) 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 (https=)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345506A (en) * 1976-10-07 1978-04-24 Sony Corp Information detecting apparatus
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345506A (en) * 1976-10-07 1978-04-24 Sony Corp Information detecting apparatus
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device

Also Published As

Publication number Publication date
JPS6341137B2 (https=) 1988-08-16

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