Global Patent Index - EP 0979508 A1

EP 0979508 A1 2000-02-16 - ELECTRO-OPTICAL STORAGE SYSTEM WITH FLYING HEAD FOR NEAR-FIELD RECORDING AND READING

Title (en)

ELECTRO-OPTICAL STORAGE SYSTEM WITH FLYING HEAD FOR NEAR-FIELD RECORDING AND READING

Title (de)

ELEKTROOPTISCHES SPEICHERSYSTEM MIT FLIEGENDEM KOPF FÜR NAHFELDAUFZEICHNUNG UND WIEDERGABE

Title (fr)

SYSTEME DE MEMOIRE ELECTRO-OPTIQUE A TETE FLOTTANTE POUR ENREGISTREMENT EN CHAMP PROCHE ET LECTURE

Publication

EP 0979508 A1 (EN)

Application

EP 97923507 A

Priority

US 9707303 W

Abstract (en)

[origin: WO9849675A1] An electro-optical storage system based on air-bearing-suspended optical head in a near-field configuration. The system comprises a read/write head and a head positioning system, an optics module (1702) including beam relay optics and signal detectors (1804), an optical medium (1714) and a corresponding medium driving unit, and an electronic control system. The optical head includes a near-field lens with a high index of refraction and in a near-field regime has a numerical aperture greater than unity when the spacing between an exit facet of the optical head and a recording layer in an optical medium is a fraction of the wavelength.

IPC 1-7 (main, further and additional classification)

G11B 5/09; G02B 5/18; G02B 21/00; G11B 3/74; G11B 5/68; G11B 7/00; G11B 7/24; G11B 9/00; G11B 11/00

IPC 8 full level (invention and additional information)

G11B 7/085 (2006.01); G11B 7/09 (2006.01); G11B 7/12 (2012.01); G11B 7/135 (2012.01); G11B 11/105 (2006.01); G11B 23/03 (2006.01); G11B 7/00 (2006.01); G11B 7/007 (2006.01); G11B 7/14 (2006.01); G11B 20/12 (2006.01)

CPC (invention and additional information)

B82Y 10/00 (2013.01); G11B 7/08564 (2013.01); G11B 7/122 (2013.01); G11B 7/1374 (2013.01); G11B 7/1387 (2013.01); G11B 11/10584 (2013.01); G11B 23/0328 (2013.01); G11B 7/00745 (2013.01); G11B 7/14 (2013.01); G11B 11/10515 (2013.01); G11B 11/10554 (2013.01); G11B 11/10569 (2013.01); G11B 11/1058 (2013.01); G11B 20/1258 (2013.01); G11B 2007/0013 (2013.01); G11B 2007/13727 (2013.01)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

WO 9849675 A1 19981105; AU 2929397 A 19981124; EP 0979508 A1 20000216; EP 0979508 A4 20011024; JP 2001524246 A 20011127

INPADOC legal status


2006-12-08 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1023843

2002-07-03 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20011210

2001-10-24 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010906

2001-10-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB NL

2001-08-01 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 11B 5/09 A, 7G 11B 5/68 B, 7G 11B 7/00 B, 7G 11B 7/24 B, 7G 11B 9/00 B, 7G 11B 11/00 B, 7G 11B 3/74 B, 7G 02B 5/18 B, 7G 02B 21/00 B, 7G 11B 7/125 B, 7G 11B 7/085 B, 7G 11B 11/10 B, 7G 11B 23/03 B, 7G 11B 20/10 B, 7G 11B 20/12 B

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: KNIGHT, GORDON, R.

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: AL-SAMARRIE, JOHN

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: BLANKENBECKLER, DAVID

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: BONN, BRIAN

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: BURROUGHS, ALAN

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: DALZIEL, WARREN

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: HAJJAR, ROGER

2000-07-12 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JAIN, AMIT

2000-02-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991115

2000-02-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB NL