ES2043727T3 - Disco registrador magneto-optico. - Google Patents
Disco registrador magneto-optico.Info
- Publication number
- ES2043727T3 ES2043727T3 ES88108604T ES88108604T ES2043727T3 ES 2043727 T3 ES2043727 T3 ES 2043727T3 ES 88108604 T ES88108604 T ES 88108604T ES 88108604 T ES88108604 T ES 88108604T ES 2043727 T3 ES2043727 T3 ES 2043727T3
- Authority
- ES
- Spain
- Prior art keywords
- recording
- magneto
- window
- optical
- disc
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
Abstract
UNA PLACA GRABADORA OPTICO - MAGNETICA 10 DISPONE DE UNA ESTRUCTURA DE GRABACION OPTICO - MAGNETICA 14 PARA LA GRABACION DE MODULACION DE INTENSIDAD DE LA RADIACION REGISTRADA 12 SIN LA EXISTENCIA DE UN CAMPO MAGNETICO. LA RADIACION CAE SOBRE LA CARA 13 DE LA PLACA REGISTRADORA. LA ESTRUCTURA DE GRABACION OPTICO - MAGNETICA 14 QUEDA EN LA CARA OPUESTA A LA DE CAIDA EN UN SOPORTE 16. EL MATERIAL DEL SOPORTE DISPONE DE UNAS CUALIDADES DE SOPORTE EXCEPCIONALES, QUE HAN SIDO SELECCIONADAS SIN TENER EN CUENTA LA FACILIDAD DEL PASO DE LA LUZ. LA ESTRUCTURA 18 DE ANILLOS DE JUNTA 19 - 19 MANTIENE LA VENTANA A DISTANCIA DE LA CARA DE LA ESTRUCTURA DE REGISTRO OPTICO MAGNETICO. ENTRE LA VENTANA Y LA ESTRUCTURA DE REGISTRO QUEDA UNA ABERTURA PARA AIRE 22. LA VENTANA ES TRANSPARENTE, PUDIENDO PASAR LA RADIACION A TRAVES CON UN MINIMO RETRASO OPTICO. EL RESULTADO ES QUE LA DIFERENCIA DEL ANGULO KERR EFECTIVO EN EL GIRO DE POLARIZACION DEPENDE DE LAS DIFERENTES DIRECCIONES, ES DECIR, HACIA ARRIBA O ABAJO, Y NO EN RELACION CON EL RETRASO OPTICO. EN OTROS EJEMPLOS DE EJECUCION DE PLACAS DE REGISTRO, LA ABERTURA PARA EL AIRE ESTA RELLENA CON UN PRODUCTOS DE PEGADO TRANSPARENTE, Y EN LUGAR DE LA ESTRUCTURA DE REGISTRO MAGNETICA SE UTILIZA UNA ESTRUCTURA DE VARIAS CAPAS DE INTERFERENCIA, PARA AMPLIFICAR LA DIFERENCIA DEL ANGULO KERR EFECTIVO DEL GIRO DE POLARIZACION, SEGUN LAS DIFERENTES DIRECCIONES DEL MAGNETIZADO. DOS DE ESTAS PLACAS DE REGISTRO, EN UNA DE ESTAS FORMAS DE EJECUCION ESTAN COLOCADAS ESPALDA CONTRA ESPALDA Y COMPARTEN UN MISMO SOPORTE, PARA TOMAR UNA PLACA DE REGISTRO OPTICO - MAGNETICA DE DOBLE CARA.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5745087A | 1987-06-02 | 1987-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2043727T3 true ES2043727T3 (es) | 1994-01-01 |
Family
ID=22010623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES88108604T Expired - Lifetime ES2043727T3 (es) | 1987-06-02 | 1988-05-30 | Disco registrador magneto-optico. |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0293797B1 (es) |
| JP (1) | JPS63311647A (es) |
| AT (1) | ATE93337T1 (es) |
| CA (1) | CA1303739C (es) |
| DE (1) | DE3883290D1 (es) |
| ES (1) | ES2043727T3 (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4877666A (en) * | 1987-08-11 | 1989-10-31 | Kerdix, Inc. | Magneto-optic substrates |
| US5667862A (en) * | 1989-03-15 | 1997-09-16 | Sony Corporation | Magneto-optical disk |
| JP2880723B2 (ja) * | 1989-03-15 | 1999-04-12 | ソニー株式会社 | 光磁気ディスク |
| DE69031612T2 (de) * | 1989-07-05 | 1998-03-12 | Mitsui Petrochemical Ind | Magnetooptische Aufzeichnungsmedien |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3519070A1 (de) * | 1984-05-29 | 1985-12-05 | Ricoh Co., Ltd., Tokio/Tokyo | Magneto-optisches aufzeichnungsmedium |
| JPS6171436A (ja) * | 1984-09-14 | 1986-04-12 | Hitachi Ltd | 光磁気記録媒体 |
| JPS61255546A (ja) * | 1985-05-09 | 1986-11-13 | Kokusai Denshin Denwa Co Ltd <Kdd> | 光磁気記録媒体 |
-
1988
- 1988-05-12 CA CA000566559A patent/CA1303739C/en not_active Expired - Fee Related
- 1988-05-30 AT AT88108604T patent/ATE93337T1/de not_active IP Right Cessation
- 1988-05-30 ES ES88108604T patent/ES2043727T3/es not_active Expired - Lifetime
- 1988-05-30 EP EP88108604A patent/EP0293797B1/de not_active Expired - Lifetime
- 1988-05-30 DE DE8888108604T patent/DE3883290D1/de not_active Expired - Fee Related
- 1988-06-01 JP JP63132910A patent/JPS63311647A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0293797A2 (de) | 1988-12-07 |
| ATE93337T1 (de) | 1993-09-15 |
| EP0293797B1 (de) | 1993-08-18 |
| EP0293797A3 (en) | 1990-12-05 |
| DE3883290D1 (de) | 1993-09-23 |
| JPS63311647A (ja) | 1988-12-20 |
| CA1303739C (en) | 1992-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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