JPS5319806A - Information reproducer - Google Patents

Information reproducer

Info

Publication number
JPS5319806A
JPS5319806A JP9400076A JP9400076A JPS5319806A JP S5319806 A JPS5319806 A JP S5319806A JP 9400076 A JP9400076 A JP 9400076A JP 9400076 A JP9400076 A JP 9400076A JP S5319806 A JPS5319806 A JP S5319806A
Authority
JP
Japan
Prior art keywords
information reproducer
disposing
tilted
eliminated
relation
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
JP9400076A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5441883B2 (OSRAM
Inventor
Yoshito Tsunoda
Moriji Izumida
Susumu Sawano
Takeshi Maeda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9400076A priority Critical patent/JPS5319806A/ja
Priority to GB26176/77A priority patent/GB1532345A/en
Priority to NLAANVRAGE7707071,A priority patent/NL187716C/xx
Priority to DE2728624A priority patent/DE2728624C2/de
Priority to FR7719366A priority patent/FR2356333A1/fr
Priority to US05/810,166 priority patent/US4293944A/en
Publication of JPS5319806A publication Critical patent/JPS5319806A/ja
Publication of JPS5441883B2 publication Critical patent/JPS5441883B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP9400076A 1976-06-25 1976-08-09 Information reproducer Granted JPS5319806A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9400076A JPS5319806A (en) 1976-08-09 1976-08-09 Information reproducer
GB26176/77A GB1532345A (en) 1976-06-25 1977-06-22 Information play-back apparatus
NLAANVRAGE7707071,A NL187716C (nl) 1976-06-25 1977-06-24 Inrichting voor het optisch lezen van informatie in sporen van een registratiemedium.
DE2728624A DE2728624C2 (de) 1976-06-25 1977-06-24 Selbstfokussierende Vorrichtung zum Abtasten einer auf einem Aufzeichnungsmedium enthaltenen Informationsspur
FR7719366A FR2356333A1 (fr) 1976-06-25 1977-06-24 Dispositif de focalisation automatique pour appareil optique de reproduction d'informations, notamment pour disque video
US05/810,166 US4293944A (en) 1976-06-25 1977-06-27 Information play-back apparatus with astigmatic auto-focusing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9400076A JPS5319806A (en) 1976-08-09 1976-08-09 Information reproducer

Publications (2)

Publication Number Publication Date
JPS5319806A true JPS5319806A (en) 1978-02-23
JPS5441883B2 JPS5441883B2 (OSRAM) 1979-12-11

Family

ID=14098125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9400076A Granted JPS5319806A (en) 1976-06-25 1976-08-09 Information reproducer

Country Status (1)

Country Link
JP (1) JPS5319806A (OSRAM)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device
JPS56159873U (OSRAM) * 1980-04-25 1981-11-28
JPS573236A (en) * 1980-06-10 1982-01-08 Olympus Optical Co Ltd Optical information reader
JPS58132892A (ja) * 1982-01-30 1983-08-08 株式会社ニコン 光電式エンコ−ダ装置
US4445208A (en) * 1980-12-27 1984-04-24 Olympus Optical Co., Ltd. Signal detecting system in optical information reading apparatus
JPS59131033U (ja) * 1983-02-22 1984-09-03 株式会社小野測器 光電式トルク検出器
JPS61164886U (OSRAM) * 1985-04-01 1986-10-13
US5511050A (en) * 1988-09-21 1996-04-23 Hitachi, Ltd. Focus error detecting method and optical head using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174353A (en) * 1974-12-23 1976-06-28 Sumitomo Shipbuild Machinery Kokaikureenno tonguhonchitorikaeki

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174353A (en) * 1974-12-23 1976-06-28 Sumitomo Shipbuild Machinery Kokaikureenno tonguhonchitorikaeki

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device
US4410969A (en) * 1979-12-19 1983-10-18 Hitachi, Ltd. Optical information playback apparatus
JPS56159873U (OSRAM) * 1980-04-25 1981-11-28
JPS573236A (en) * 1980-06-10 1982-01-08 Olympus Optical Co Ltd Optical information reader
US4445208A (en) * 1980-12-27 1984-04-24 Olympus Optical Co., Ltd. Signal detecting system in optical information reading apparatus
JPS58132892A (ja) * 1982-01-30 1983-08-08 株式会社ニコン 光電式エンコ−ダ装置
JPS59131033U (ja) * 1983-02-22 1984-09-03 株式会社小野測器 光電式トルク検出器
JPS61164886U (OSRAM) * 1985-04-01 1986-10-13
US5511050A (en) * 1988-09-21 1996-04-23 Hitachi, Ltd. Focus error detecting method and optical head using the same

Also Published As

Publication number Publication date
JPS5441883B2 (OSRAM) 1979-12-11

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