JPS5410701A - Focus-servo system for optical reproducing apparatus - Google Patents

Focus-servo system for optical reproducing apparatus

Info

Publication number
JPS5410701A
JPS5410701A JP7636677A JP7636677A JPS5410701A JP S5410701 A JPS5410701 A JP S5410701A JP 7636677 A JP7636677 A JP 7636677A JP 7636677 A JP7636677 A JP 7636677A JP S5410701 A JPS5410701 A JP S5410701A
Authority
JP
Japan
Prior art keywords
focus
reproducing apparatus
servo system
optical reproducing
optical
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
JP7636677A
Other languages
Japanese (ja)
Other versions
JPS5811693B2 (en
Inventor
Yasuo Hachi
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP7636677A priority Critical patent/JPS5811693B2/en
Publication of JPS5410701A publication Critical patent/JPS5410701A/en
Publication of JPS5811693B2 publication Critical patent/JPS5811693B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE: To prevent a reading lens and a disc from colliding against each other by detecting that they approach over the most proper focusing position so that they may be restricted from approaching more.
COPYRIGHT: (C)1979,JPO&Japio
JP7636677A 1977-06-27 1977-06-27 Focus servo method in optical reproducing equipment Expired JPS5811693B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7636677A JPS5811693B2 (en) 1977-06-27 1977-06-27 Focus servo method in optical reproducing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7636677A JPS5811693B2 (en) 1977-06-27 1977-06-27 Focus servo method in optical reproducing equipment

Publications (2)

Publication Number Publication Date
JPS5410701A true JPS5410701A (en) 1979-01-26
JPS5811693B2 JPS5811693B2 (en) 1983-03-04

Family

ID=13603343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7636677A Expired JPS5811693B2 (en) 1977-06-27 1977-06-27 Focus servo method in optical reproducing equipment

Country Status (1)

Country Link
JP (1) JPS5811693B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187997A (en) * 1981-05-06 1982-11-18 Universal Instruments Corp Device for disposing leadless chip on printed circuit board
JPS6293996A (en) * 1985-10-21 1987-04-30 松下電器産業株式会社 Mounting apparatus for electronic part

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187997A (en) * 1981-05-06 1982-11-18 Universal Instruments Corp Device for disposing leadless chip on printed circuit board
JPH0158879B2 (en) * 1981-05-06 1989-12-13 Yunibaasaru Insutsurumentsu Corp
JPS6293996A (en) * 1985-10-21 1987-04-30 松下電器産業株式会社 Mounting apparatus for electronic part

Also Published As

Publication number Publication date
JPS5811693B2 (en) 1983-03-04

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