JPS5280803A - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
JPS5280803A
JPS5280803A JP50159376A JP15937675A JPS5280803A JP S5280803 A JPS5280803 A JP S5280803A JP 50159376 A JP50159376 A JP 50159376A JP 15937675 A JP15937675 A JP 15937675A JP S5280803 A JPS5280803 A JP S5280803A
Authority
JP
Japan
Prior art keywords
automatic focusing
focusing device
time width
signal
reproduction
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
JP50159376A
Other languages
Japanese (ja)
Other versions
JPS5947366B2 (en
Inventor
Shiro Tsuji
Tomio Yoshida
Akifumi Nakada
Hideo Okamura
Shunji Harikae
Yasuhisa Fukushima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP50159376A priority Critical patent/JPS5947366B2/en
Publication of JPS5280803A publication Critical patent/JPS5280803A/en
Publication of JPS5947366B2 publication Critical patent/JPS5947366B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To improve reliability by detecting the rise time width of reproduction signal and making the time width as a focus error signal in a focus controlling of an optical signal reproduction system using a disc-form recording medium.
COPYRIGHT: (C)1977,JPO&Japio
JP50159376A 1975-12-26 1975-12-26 Jidousyoutensouchi Expired JPS5947366B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50159376A JPS5947366B2 (en) 1975-12-26 1975-12-26 Jidousyoutensouchi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50159376A JPS5947366B2 (en) 1975-12-26 1975-12-26 Jidousyoutensouchi

Publications (2)

Publication Number Publication Date
JPS5280803A true JPS5280803A (en) 1977-07-06
JPS5947366B2 JPS5947366B2 (en) 1984-11-19

Family

ID=15692455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50159376A Expired JPS5947366B2 (en) 1975-12-26 1975-12-26 Jidousyoutensouchi

Country Status (1)

Country Link
JP (1) JPS5947366B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316503A (en) * 2001-04-24 2002-10-29 Ohtsu Tire & Rubber Co Ltd :The Wheel for agricultural use

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6155176U (en) * 1984-09-14 1986-04-14
US20250317027A1 (en) * 2022-05-27 2025-10-09 Lg Electronics Inc. Display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002316503A (en) * 2001-04-24 2002-10-29 Ohtsu Tire & Rubber Co Ltd :The Wheel for agricultural use

Also Published As

Publication number Publication date
JPS5947366B2 (en) 1984-11-19

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