JPS5369005A - Automatic focus controller - Google Patents

Automatic focus controller

Info

Publication number
JPS5369005A
JPS5369005A JP14434576A JP14434576A JPS5369005A JP S5369005 A JPS5369005 A JP S5369005A JP 14434576 A JP14434576 A JP 14434576A JP 14434576 A JP14434576 A JP 14434576A JP S5369005 A JPS5369005 A JP S5369005A
Authority
JP
Japan
Prior art keywords
automatic focus
focus controller
constirution
magnitude
sensing
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.)
Pending
Application number
JP14434576A
Other languages
Japanese (ja)
Inventor
Tadao Nagai
Kazuo Okada
Sadanobu Kawabe
Kuniaki Sakai
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
Mitsubishi Electric Corp
Original Assignee
Teac Corp
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 Teac Corp, Mitsubishi Electric Corp filed Critical Teac Corp
Priority to JP14434576A priority Critical patent/JPS5369005A/en
Publication of JPS5369005A publication Critical patent/JPS5369005A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To positively perform focusing with a simple constirution by sensing the change in the magnitude of a read signal and generating the signal corresponding to the direction and amount of focus deviation from disc face.
COPYRIGHT: (C)1978,JPO&Japio
JP14434576A 1976-12-01 1976-12-01 Automatic focus controller Pending JPS5369005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14434576A JPS5369005A (en) 1976-12-01 1976-12-01 Automatic focus controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14434576A JPS5369005A (en) 1976-12-01 1976-12-01 Automatic focus controller

Publications (1)

Publication Number Publication Date
JPS5369005A true JPS5369005A (en) 1978-06-20

Family

ID=15359938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14434576A Pending JPS5369005A (en) 1976-12-01 1976-12-01 Automatic focus controller

Country Status (1)

Country Link
JP (1) JPS5369005A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223960A (en) * 1984-03-26 1984-12-15 Matsushita Electric Ind Co Ltd Optical recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132939A (en) * 1974-04-05 1975-10-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132939A (en) * 1974-04-05 1975-10-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223960A (en) * 1984-03-26 1984-12-15 Matsushita Electric Ind Co Ltd Optical recording medium
JPH0480455B2 (en) * 1984-03-26 1992-12-18 Matsushita Electric Ind Co Ltd

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