JPS52145006A - Highly densed recording signals reproduction device - Google Patents

Highly densed recording signals reproduction device

Info

Publication number
JPS52145006A
JPS52145006A JP6206276A JP6206276A JPS52145006A JP S52145006 A JPS52145006 A JP S52145006A JP 6206276 A JP6206276 A JP 6206276A JP 6206276 A JP6206276 A JP 6206276A JP S52145006 A JPS52145006 A JP S52145006A
Authority
JP
Japan
Prior art keywords
reproduction device
recording signals
highly densed
densed
highly
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
JP6206276A
Other languages
Japanese (ja)
Inventor
Katsuto Uetake
Kazuo Hirasawa
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.)
Mitsubishi Electric Corp
Original Assignee
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6206276A priority Critical patent/JPS52145006A/en
Publication of JPS52145006A publication Critical patent/JPS52145006A/en
Pending legal-status Critical Current

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  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To make the position of an optical spot optimal by providing servo system controlling te rotating angle of a diffraction grating, together with, making the adjustment of the servo system.
JP6206276A 1976-05-27 1976-05-27 Highly densed recording signals reproduction device Pending JPS52145006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6206276A JPS52145006A (en) 1976-05-27 1976-05-27 Highly densed recording signals reproduction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6206276A JPS52145006A (en) 1976-05-27 1976-05-27 Highly densed recording signals reproduction device

Publications (1)

Publication Number Publication Date
JPS52145006A true JPS52145006A (en) 1977-12-02

Family

ID=13189250

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6206276A Pending JPS52145006A (en) 1976-05-27 1976-05-27 Highly densed recording signals reproduction device

Country Status (1)

Country Link
JP (1) JPS52145006A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480016A1 (en) * 1980-04-03 1981-10-09 Philips Nv DISC INFORMATION TRACK TRACKING DEVICE
EP0140215A2 (en) * 1983-11-03 1985-05-08 Deutsche Thomson-Brandt GmbH Tracking system for marking angle errors of the tangent during optical reproduction of a disc
JPS6179822U (en) * 1984-10-30 1986-05-28
EP0201603A1 (en) * 1984-10-15 1986-11-20 Sony Corporation System for detecting tracking error of an optical head
JPH01302543A (en) * 1988-02-26 1989-12-06 Fujitsu Ltd Tracking error detecting method and diffraction grating and optical detector used for said detecting method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480016A1 (en) * 1980-04-03 1981-10-09 Philips Nv DISC INFORMATION TRACK TRACKING DEVICE
EP0140215A2 (en) * 1983-11-03 1985-05-08 Deutsche Thomson-Brandt GmbH Tracking system for marking angle errors of the tangent during optical reproduction of a disc
EP0201603A1 (en) * 1984-10-15 1986-11-20 Sony Corporation System for detecting tracking error of an optical head
US4775968A (en) * 1984-10-15 1988-10-04 Sony Corporation Tracking error detecting system for optical head
JPS6179822U (en) * 1984-10-30 1986-05-28
JPH01302543A (en) * 1988-02-26 1989-12-06 Fujitsu Ltd Tracking error detecting method and diffraction grating and optical detector used for said detecting method

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