DK120578A - Apparat til aflaesning af en straalingsreflekterende registreringsbaerer - Google Patents
Apparat til aflaesning af en straalingsreflekterende registreringsbaererInfo
- Publication number
- DK120578A DK120578A DK120578A DK120578A DK120578A DK 120578 A DK120578 A DK 120578A DK 120578 A DK120578 A DK 120578A DK 120578 A DK120578 A DK 120578A DK 120578 A DK120578 A DK 120578A
- Authority
- DK
- Denmark
- Prior art keywords
- reading
- radiation reflective
- registration carrier
- reflective registration
- carrier
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
- G11B7/0909—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by astigmatic methods
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7703076 | 1977-03-22 | ||
| NL7703076A NL7703076A (nl) | 1977-03-22 | 1977-03-22 | Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK120578A true DK120578A (da) | 1978-09-23 |
| DK145868B DK145868B (da) | 1983-03-21 |
| DK145868C DK145868C (da) | 1983-09-12 |
Family
ID=19828205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK120578A DK145868C (da) | 1977-03-22 | 1978-03-17 | Apparat til aflaesning af en straalingsreflekterende registreringsbaerer og omfattende en fokuseringsfejldetektor |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS53117403A (da) |
| AR (1) | AR214353A1 (da) |
| AT (1) | AT369580B (da) |
| AU (1) | AU510218B2 (da) |
| BE (1) | BE865083A (da) |
| BR (1) | BR7801690A (da) |
| CA (1) | CA1109560A (da) |
| CH (1) | CH627016A5 (da) |
| DE (1) | DE2810616A1 (da) |
| DK (1) | DK145868C (da) |
| ES (1) | ES468055A1 (da) |
| FR (1) | FR2385171A1 (da) |
| IT (1) | IT1093316B (da) |
| MX (1) | MX143603A (da) |
| NL (1) | NL7703076A (da) |
| NZ (1) | NZ186732A (da) |
| PL (1) | PL113996B1 (da) |
| SE (1) | SE424676B (da) |
| YU (1) | YU39193B (da) |
| ZA (1) | ZA78216B (da) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290132A (en) * | 1977-05-11 | 1981-09-15 | Pioneer Electronic Corporation | Focus servo device for use in an optical information read-out device |
| FR2460022B1 (fr) * | 1979-06-25 | 1987-09-11 | Hitachi Ltd | Systeme optique de reproduction d'informations |
| NL7907216A (nl) * | 1979-09-28 | 1981-03-31 | Philips Nv | Optisch fokusfout-detektiestelsel. |
| JPS59125727U (ja) * | 1983-02-15 | 1984-08-24 | パイオニア株式会社 | 光学式情報ピツクアツプ装置 |
| NL8400674A (nl) * | 1984-03-02 | 1985-10-01 | Philips Nv | Inrichting voor het inschrijven en/of uitlezen van informatie in een spoor van een reflekterende registratiedrager, met een fokusregeling met verminderde spot offsetgevoeligheid. |
| JPS6139942A (ja) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | 光ピツクアツプ |
| US4609813A (en) * | 1985-03-18 | 1986-09-02 | International Business Machines Corporation | Optical systems employing ovate light beams |
| JPS6310326A (ja) * | 1986-07-01 | 1988-01-16 | Sanyo Electric Co Ltd | 光ピツクアツプ装置 |
| DE3828146A1 (de) * | 1988-08-19 | 1990-02-22 | Philips Patentverwaltung | Elektrodynamischer aktuator fuer eine optische einschreib- und ausleseeinheit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2271590B1 (da) * | 1974-01-15 | 1978-12-01 | Thomson Brandt | |
| NL182990C (nl) * | 1975-07-07 | 1988-06-16 | Philips Nv | Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager. |
| FR2325987A1 (fr) * | 1975-09-29 | 1977-04-22 | Thomson Brandt | Dispositif de lecture optique d'un enregistrement |
| GB1532345A (en) * | 1976-06-25 | 1978-11-15 | Hitachi Ltd | Information play-back apparatus |
| JPS5337722A (en) * | 1976-09-20 | 1978-04-07 | Ebata Shiyouji Kk | Method of producing concrete piles |
| NL7703077A (nl) * | 1977-03-22 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager. |
-
1977
- 1977-03-22 NL NL7703076A patent/NL7703076A/xx not_active Application Discontinuation
-
1978
- 1978-01-12 ZA ZA00780216A patent/ZA78216B/xx unknown
- 1978-02-06 AR AR270983A patent/AR214353A1/es active
- 1978-03-11 DE DE19782810616 patent/DE2810616A1/de active Pending
- 1978-03-15 CA CA298,999A patent/CA1109560A/en not_active Expired
- 1978-03-17 DK DK120578A patent/DK145868C/da not_active IP Right Cessation
- 1978-03-17 IT IT21340/78A patent/IT1093316B/it active
- 1978-03-17 MX MX172816A patent/MX143603A/es unknown
- 1978-03-20 SE SE7803138A patent/SE424676B/sv not_active IP Right Cessation
- 1978-03-20 PL PL1978205453A patent/PL113996B1/pl unknown
- 1978-03-20 BE BE186087A patent/BE865083A/xx not_active IP Right Cessation
- 1978-03-20 AU AU34294/78A patent/AU510218B2/en not_active Expired
- 1978-03-20 NZ NZ186732A patent/NZ186732A/xx unknown
- 1978-03-20 CH CH302678A patent/CH627016A5/de not_active IP Right Cessation
- 1978-03-20 BR BR7801690A patent/BR7801690A/pt unknown
- 1978-03-20 AT AT0196578A patent/AT369580B/de not_active IP Right Cessation
- 1978-03-20 ES ES468055A patent/ES468055A1/es not_active Expired
- 1978-03-21 YU YU00673/78A patent/YU39193B/xx unknown
- 1978-03-22 JP JP3182778A patent/JPS53117403A/ja active Pending
- 1978-03-22 FR FR7808294A patent/FR2385171A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2810616A1 (de) | 1978-09-28 |
| SE7803138L (sv) | 1978-09-23 |
| CA1109560A (en) | 1981-09-22 |
| FR2385171A1 (fr) | 1978-10-20 |
| AT369580B (de) | 1983-01-10 |
| JPS53117403A (en) | 1978-10-13 |
| ZA78216B (en) | 1979-08-29 |
| SE424676B (sv) | 1982-08-02 |
| ATA196578A (de) | 1982-05-15 |
| NL7703076A (nl) | 1978-09-26 |
| IT1093316B (it) | 1985-07-19 |
| AR214353A1 (es) | 1979-05-31 |
| IT7821340A0 (it) | 1978-03-17 |
| PL205453A1 (pl) | 1978-12-18 |
| DK145868B (da) | 1983-03-21 |
| AU510218B2 (en) | 1980-06-12 |
| YU39193B (en) | 1984-08-31 |
| YU67378A (en) | 1982-06-30 |
| DK145868C (da) | 1983-09-12 |
| CH627016A5 (en) | 1981-12-15 |
| ES468055A1 (es) | 1978-11-16 |
| NZ186732A (en) | 1981-02-11 |
| MX143603A (es) | 1981-06-05 |
| BE865083A (fr) | 1978-09-20 |
| AU3429478A (en) | 1979-09-27 |
| BR7801690A (pt) | 1979-01-02 |
| PL113996B1 (en) | 1981-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUP | Patent expired |