DE3279453D1 - Access device for positioning a light beam to a desired guide groove of an optical memory apparatus - Google Patents

Access device for positioning a light beam to a desired guide groove of an optical memory apparatus

Info

Publication number
DE3279453D1
DE3279453D1 DE8484113018T DE3279453T DE3279453D1 DE 3279453 D1 DE3279453 D1 DE 3279453D1 DE 8484113018 T DE8484113018 T DE 8484113018T DE 3279453 T DE3279453 T DE 3279453T DE 3279453 D1 DE3279453 D1 DE 3279453D1
Authority
DE
Germany
Prior art keywords
positioning
light beam
guide groove
access device
optical memory
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.)
Expired
Application number
DE8484113018T
Other languages
German (de)
Inventor
Takeshi Maeda
Motoo Uno
Kouji Muraoka
Masahiro Tkasago
Yasumitsu Mizoguchi
Tokuya Kaneda
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
Priority claimed from JP18786981A external-priority patent/JPS5891536A/en
Priority claimed from JP5003582A external-priority patent/JPS58169370A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority claimed from EP82110907A external-priority patent/EP0080212B1/en
Application granted granted Critical
Publication of DE3279453D1 publication Critical patent/DE3279453D1/en
Expired legal-status Critical Current

Links

DE8484113018T 1981-11-25 1982-11-25 Access device for positioning a light beam to a desired guide groove of an optical memory apparatus Expired DE3279453D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP18786981A JPS5891536A (en) 1981-11-25 1981-11-25 Accessing system of digital optical disk
JP5003582A JPS58169370A (en) 1982-03-30 1982-03-30 Accessing system
EP82110907A EP0080212B1 (en) 1981-11-25 1982-11-25 Optical memory apparatus

Publications (1)

Publication Number Publication Date
DE3279453D1 true DE3279453D1 (en) 1989-03-23

Family

ID=27225725

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484113018T Expired DE3279453D1 (en) 1981-11-25 1982-11-25 Access device for positioning a light beam to a desired guide groove of an optical memory apparatus

Country Status (2)

Country Link
AT (1) ATE36917T1 (en)
DE (1) DE3279453D1 (en)

Also Published As

Publication number Publication date
ATE36917T1 (en) 1988-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition