DE2967483D1 - Focus servo system and focussing method - Google Patents
Focus servo system and focussing methodInfo
- Publication number
- DE2967483D1 DE2967483D1 DE8181200102T DE2967483T DE2967483D1 DE 2967483 D1 DE2967483 D1 DE 2967483D1 DE 8181200102 T DE8181200102 T DE 8181200102T DE 2967483 T DE2967483 T DE 2967483T DE 2967483 D1 DE2967483 D1 DE 2967483D1
- Authority
- DE
- Germany
- Prior art keywords
- servo system
- focus servo
- focussing method
- focussing
- focus
- 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
Links
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89067078A | 1978-03-27 | 1978-03-27 | |
EP79300489A EP0004476B1 (en) | 1978-03-27 | 1979-03-27 | Time base error correction for optical disc players |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2967483D1 true DE2967483D1 (en) | 1985-08-14 |
Family
ID=26077995
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8181200103T Expired DE2967403D1 (en) | 1978-03-27 | 1979-03-27 | Disc spindle servo system |
DE8181200101T Expired DE2967471D1 (en) | 1978-03-27 | 1979-03-27 | Signal correction system and method |
DE8181200104T Expired DE2967511D1 (en) | 1978-03-27 | 1979-03-27 | Optical tracking method and system |
DE8181200102T Expired DE2967483D1 (en) | 1978-03-27 | 1979-03-27 | Focus servo system and focussing method |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8181200103T Expired DE2967403D1 (en) | 1978-03-27 | 1979-03-27 | Disc spindle servo system |
DE8181200101T Expired DE2967471D1 (en) | 1978-03-27 | 1979-03-27 | Signal correction system and method |
DE8181200104T Expired DE2967511D1 (en) | 1978-03-27 | 1979-03-27 | Optical tracking method and system |
Country Status (1)
Country | Link |
---|---|
DE (4) | DE2967403D1 (en) |
-
1979
- 1979-03-27 DE DE8181200103T patent/DE2967403D1/en not_active Expired
- 1979-03-27 DE DE8181200101T patent/DE2967471D1/en not_active Expired
- 1979-03-27 DE DE8181200104T patent/DE2967511D1/en not_active Expired
- 1979-03-27 DE DE8181200102T patent/DE2967483D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2967403D1 (en) | 1985-04-11 |
DE2967511D1 (en) | 1985-10-17 |
DE2967471D1 (en) | 1985-07-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0036222A3 (en) | Focus servo system and focussing method | |
AU533073B2 (en) | Heat storage system and method | |
JPS5745510A (en) | Automatically focusing method and device | |
JPS559595A (en) | Holographic optical spot scanning method | |
JPS54147559A (en) | Cooling system and its method | |
GB2021801A (en) | Objective lens assemblies | |
EP0183435A3 (en) | Focus servo device | |
GB2038586B (en) | Focus detection system | |
DE3467632D1 (en) | Energy beam focusing apparatus and method | |
EP0017044A3 (en) | Optical focusing system | |
JPS54163616A (en) | Tracking method and selector | |
GB2019152B (en) | Camera focussing system | |
GB2019156A (en) | Camera focussing system | |
GB2011642B (en) | Method of focussing in a photographic lens system | |
HK19983A (en) | Camera focussing system | |
JPS54101276A (en) | Electrooptical objective lens and microlithoraphic system | |
DE3169257D1 (en) | Electron beam system and method | |
DE3278835D1 (en) | Exposure method utilising an energy beam | |
JPS54153029A (en) | Method of and device for automatically or semiiautomatically focusing | |
GB2057718B (en) | Servo system | |
DE2967483D1 (en) | Focus servo system and focussing method | |
JPS54163618A (en) | Automatically compensated variable head servo circuit and method | |
GB2108731B (en) | Tracking servo system | |
GB2013374B (en) | Servo systems | |
JPS5576251A (en) | Toggle control servo system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |