JPS5328403A - Optical information reader of disc from magnetic recording media - Google Patents

Optical information reader of disc from magnetic recording media

Info

Publication number
JPS5328403A
JPS5328403A JP10220276A JP10220276A JPS5328403A JP S5328403 A JPS5328403 A JP S5328403A JP 10220276 A JP10220276 A JP 10220276A JP 10220276 A JP10220276 A JP 10220276A JP S5328403 A JPS5328403 A JP S5328403A
Authority
JP
Japan
Prior art keywords
disc
magnetic recording
recording media
optical information
information reader
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
JP10220276A
Other languages
Japanese (ja)
Inventor
Toru Musha
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP10220276A priority Critical patent/JPS5328403A/en
Publication of JPS5328403A publication Critical patent/JPS5328403A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To read out information by so arranging the device that the focus deviation signal for focussing is detected by the use of photonic sensors.
COPYRIGHT: (C)1978,JPO&Japio
JP10220276A 1976-08-28 1976-08-28 Optical information reader of disc from magnetic recording media Pending JPS5328403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10220276A JPS5328403A (en) 1976-08-28 1976-08-28 Optical information reader of disc from magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10220276A JPS5328403A (en) 1976-08-28 1976-08-28 Optical information reader of disc from magnetic recording media

Publications (1)

Publication Number Publication Date
JPS5328403A true JPS5328403A (en) 1978-03-16

Family

ID=14321071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10220276A Pending JPS5328403A (en) 1976-08-28 1976-08-28 Optical information reader of disc from magnetic recording media

Country Status (1)

Country Link
JP (1) JPS5328403A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179954A (en) * 1981-04-27 1982-11-05 Sony Corp Optical type disc player
JPS6431110A (en) * 1987-07-27 1989-02-01 Micro Pack Kk Automatic focusing method for microscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57179954A (en) * 1981-04-27 1982-11-05 Sony Corp Optical type disc player
JPH0219538B2 (en) * 1981-04-27 1990-05-02 Sony Corp
JPS6431110A (en) * 1987-07-27 1989-02-01 Micro Pack Kk Automatic focusing method for microscope

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