JPS53135307A - Information reproducer - Google Patents

Information reproducer

Info

Publication number
JPS53135307A
JPS53135307A JP4955277A JP4955277A JPS53135307A JP S53135307 A JPS53135307 A JP S53135307A JP 4955277 A JP4955277 A JP 4955277A JP 4955277 A JP4955277 A JP 4955277A JP S53135307 A JPS53135307 A JP S53135307A
Authority
JP
Japan
Prior art keywords
information reproducer
controlling
electro
objective lens
light transmission
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
JP4955277A
Other languages
Japanese (ja)
Other versions
JPS5845095B2 (en
Inventor
Toshiro Kamogawa
Kazuyoshi Ito
Tadashi Nagaoka
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 JP4955277A priority Critical patent/JPS5845095B2/en
Publication of JPS53135307A publication Critical patent/JPS53135307A/en
Publication of JPS5845095B2 publication Critical patent/JPS5845095B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain good reproduction signal by optically detecting the face run-out of a light transmission type flexible disc and performing focusing controlling by electro-magnetically controlling a condensing objective lens.
COPYRIGHT: (C)1978,JPO&Japio
JP4955277A 1977-04-28 1977-04-28 information reproducing device Expired JPS5845095B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4955277A JPS5845095B2 (en) 1977-04-28 1977-04-28 information reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4955277A JPS5845095B2 (en) 1977-04-28 1977-04-28 information reproducing device

Publications (2)

Publication Number Publication Date
JPS53135307A true JPS53135307A (en) 1978-11-25
JPS5845095B2 JPS5845095B2 (en) 1983-10-07

Family

ID=12834347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4955277A Expired JPS5845095B2 (en) 1977-04-28 1977-04-28 information reproducing device

Country Status (1)

Country Link
JP (1) JPS5845095B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112203U (en) * 1974-07-16 1976-01-29
JPS5143948A (en) * 1974-08-08 1976-04-15 Philips Nv

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5112203U (en) * 1974-07-16 1976-01-29
JPS5143948A (en) * 1974-08-08 1976-04-15 Philips Nv

Also Published As

Publication number Publication date
JPS5845095B2 (en) 1983-10-07

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