BR7801692A - Aparelho para efetuar a leitura de um suporte de informacoes refletor de radiacao optica - Google Patents
Aparelho para efetuar a leitura de um suporte de informacoes refletor de radiacao opticaInfo
- Publication number
- BR7801692A BR7801692A BR7801692A BR7801692A BR7801692A BR 7801692 A BR7801692 A BR 7801692A BR 7801692 A BR7801692 A BR 7801692A BR 7801692 A BR7801692 A BR 7801692A BR 7801692 A BR7801692 A BR 7801692A
- Authority
- BR
- Brazil
- Prior art keywords
- read
- optical radiation
- information support
- radiation reflector
- reflector information
- 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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
-
- 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
-
- 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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
- G11B2007/0924—Skewed beams methods (using an angled beam, i.e. a beam which is reflected from the disc at an angle different from 90°)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7703123A NL7703123A (nl) | 1977-03-23 | 1977-03-23 | Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager. |
| NL7706753A NL7706753A (nl) | 1977-03-23 | 1977-06-20 | Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR7801692A true BR7801692A (pt) | 1979-01-02 |
Family
ID=26645307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR7801692A BR7801692A (pt) | 1977-03-23 | 1978-03-20 | Aparelho para efetuar a leitura de um suporte de informacoes refletor de radiacao optica |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS6028055B2 (xx) |
| AR (1) | AR217276A1 (xx) |
| AT (1) | AT371275B (xx) |
| AU (1) | AU516903B2 (xx) |
| BE (1) | BE865140A (xx) |
| BR (1) | BR7801692A (xx) |
| CA (1) | CA1116294A (xx) |
| DD (1) | DD135654A5 (xx) |
| DE (1) | DE2810566A1 (xx) |
| DK (1) | DK124478A (xx) |
| ES (1) | ES468083A1 (xx) |
| FR (1) | FR2385173A1 (xx) |
| GB (1) | GB1589035A (xx) |
| IT (1) | IT1093249B (xx) |
| NL (1) | NL7706753A (xx) |
| SE (1) | SE424677B (xx) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7809635A (nl) * | 1978-09-22 | 1980-03-25 | Philips Nv | Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur. |
| NL186353C (nl) * | 1979-06-12 | 1990-11-01 | Philips Nv | Inrichting voor het afbeelden van een maskerpatroon op een substraat voorzien van een opto-elektronisch detektiestelsel voor het bepalen van een afwijking tussen het beeldvlak van een projektielenzenstelsel en het substraatvlak. |
| FR2460523A1 (fr) * | 1979-06-29 | 1981-01-23 | Thomson Csf | Tete de lecture optique a source laser a semi-conducteur et dispositif de lecture par reflexion d'un support d'information comportant une telle tete optique |
| JPS5870434A (ja) * | 1981-10-22 | 1983-04-26 | Toshiba Corp | 光学ヘツド |
| JPS57186240A (en) * | 1981-11-09 | 1982-11-16 | Teac Co | Optical reproducing device |
| JPS59119548A (ja) * | 1982-12-25 | 1984-07-10 | Pioneer Electronic Corp | 光学式ピツクアツプ装置 |
| US4630927A (en) * | 1983-02-15 | 1986-12-23 | General Electric Company | Optical projector |
| 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 |
| JPS60197950A (ja) * | 1984-03-22 | 1985-10-07 | Toshiba Corp | 光学ヘツド |
| JPH0626972Y2 (ja) * | 1986-10-03 | 1994-07-20 | パイオニア株式会社 | 光学式ピツクアツプ装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2313716A1 (fr) * | 1975-06-03 | 1976-12-31 | Thomson Brandt | Systeme optique de lecture par reflexion d'un support d'information |
-
1977
- 1977-06-20 NL NL7706753A patent/NL7706753A/xx not_active Application Discontinuation
-
1978
- 1978-02-16 AR AR271114A patent/AR217276A1/es active
- 1978-03-11 DE DE19782810566 patent/DE2810566A1/de active Granted
- 1978-03-15 CA CA299,001A patent/CA1116294A/en not_active Expired
- 1978-03-20 GB GB10887/78A patent/GB1589035A/en not_active Expired
- 1978-03-20 BR BR7801692A patent/BR7801692A/pt unknown
- 1978-03-20 IT IT21384/78A patent/IT1093249B/it active
- 1978-03-20 AU AU34292/78A patent/AU516903B2/en not_active Expired
- 1978-03-20 JP JP53032272A patent/JPS6028055B2/ja not_active Expired
- 1978-03-20 DK DK124478A patent/DK124478A/da unknown
- 1978-03-20 SE SE7803140A patent/SE424677B/sv not_active IP Right Cessation
- 1978-03-20 DD DD78204290A patent/DD135654A5/xx unknown
- 1978-03-21 AT AT0200278A patent/AT371275B/de active
- 1978-03-21 ES ES468083A patent/ES468083A1/es not_active Expired
- 1978-03-21 BE BE186137A patent/BE865140A/xx not_active IP Right Cessation
- 1978-03-22 FR FR7808297A patent/FR2385173A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DD135654A5 (de) | 1979-05-16 |
| BE865140A (fr) | 1978-09-21 |
| SE424677B (sv) | 1982-08-02 |
| NL7706753A (nl) | 1978-12-22 |
| SE7803140L (sv) | 1978-09-24 |
| FR2385173B1 (xx) | 1985-05-10 |
| ES468083A1 (es) | 1978-12-16 |
| IT7821384A0 (it) | 1978-03-20 |
| AT371275B (de) | 1983-06-10 |
| CA1116294A (en) | 1982-01-12 |
| AU3429278A (en) | 1979-09-27 |
| DK124478A (da) | 1978-09-24 |
| DE2810566C2 (xx) | 1988-01-21 |
| FR2385173A1 (fr) | 1978-10-20 |
| IT1093249B (it) | 1985-07-19 |
| JPS53118103A (en) | 1978-10-16 |
| DE2810566A1 (de) | 1978-09-28 |
| ATA200278A (de) | 1982-10-15 |
| AR217276A1 (es) | 1980-03-14 |
| GB1589035A (en) | 1981-05-07 |
| JPS6028055B2 (ja) | 1985-07-02 |
| AU516903B2 (en) | 1981-06-25 |
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