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1. (WO1999063536) VERY-HIGH-DENSITY MEMORY DEVICE UTILIZING A SCINTILLATING DATA-STORAGE MEDIUM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1999/063536 International Application No.: PCT/US1999/012579
Publication Date: 09.12.1999 International Filing Date: 04.06.1999
Chapter 2 Demand Filed: 03.01.2000
IPC:
G03F 1/00 (2012.01) ,G03F 7/20 (2006.01) ,G11B 11/00 (2006.01) ,G11B 11/08 (2006.01) ,G11B 21/10 (2006.01) ,G11B 23/00 (2006.01) ,G11B 5/55 (2006.01) ,G11B 5/58 (2006.01) ,G11B 5/596 (2006.01) ,G11B 7/09 (2006.01) ,G11B 9/10 (2006.01) ,G03F 7/00 (2006.01) ,G11B 5/82 (2006.01) ,G11B 7/24 (2013.01) ,G11B 7/26 (2006.01)
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
F
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
1
Originals for photomechanical production of textured or patterned surfaces, e.g. masks, photo-masks or reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
F
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
7
Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
20
Exposure; Apparatus therefor
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11
Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups G11B3/-G11B7/212; Record carriers therefor
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11
Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups G11B3/-G11B7/212; Record carriers therefor
08
using recording by electric charge or by variation of electric resistance or capacitance
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
21
Head arrangements not specific to the method of recording or reproducing
02
Driving or moving of heads
10
Track finding or aligning by moving the head
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
23
Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
54
with provision for moving the head into, or out of, its operative position or across tracks
55
Track change, selection, or acquisition by displacement of the head
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
58
with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
58
with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
596
for track following on discs
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
08
Disposition or mounting of heads or light sources relatively to record carriers
09
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
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
9
Recording or reproducing using a method or means not covered by one of the main groups G11B3/-G11B7/139; Record carriers therefor
10
using electron beam; Record carriers therefor
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
F
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
7
Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
74
Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
82
Disc carriers
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
26
Apparatus or processes specially adapted for the manufacture of record carriers
Applicants:
MASSACHUSETTS INSTITUTE OF TECHNOLOGY [US/US]; 77 Massachusetts Avenue Cambridge, MA 02139, US
Inventors:
GOODBERLET, James, G.; US
Agent:
CONNORS, Matthew, E. ; Samuels, Gauthier & Stevens LLP Suite 3300 225 Franklin Street Boston, MA 02110, US
HAMMOND, Andrew; Göteborgs Patentbyrå Dahls Sjoporten 4 S-417 64 Göteborg, SE
Priority Data:
60/088,31805.06.1998US
Title (EN) VERY-HIGH-DENSITY MEMORY DEVICE UTILIZING A SCINTILLATING DATA-STORAGE MEDIUM
(FR) DISPOSITIF MEMOIRE A TRES HAUTE DENSITE UTILISANT UN SUPPORT DE STOCKAGE DE DONNEES SCINTILLANT
Abstract:
(EN) A very-high-density memory device which utilizes a scintillating medium for data storage. In one mode, the device operates as a read-only-memory (ROM) unit. In another mode, the device functions as a one-time-write (OTW) and then read-only-memory unit. In an exemplary embodiment, information is read at high data rates from a rotating data-storage disk or cylinder with an electron beam and sensitive photodetector. Two methods of following the data tracks on the storage medium are provided. Masks are provided for use in patterning the data or data tracks. These masks may also be used to pattern very-high-density media for other applications such as magnetic memory and optical near-field memory. A method of patterning radially-periodic structures using interferometric lithography is also provided.
(FR) La présente invention porte sur un dispositif mémoire à très haute densité qui utilise un support scintillant pour le stockage des données. Dans un mode, le dispositif fonctionne en tant qu'unité de mémoire morte (ROM). Dans un autre mode, le dispositif fonctionne en tant qu'unité d'écriture unique (OTW) puis en tant qu'unité de mémoire morte. Dans une forme de réalisation représentative, les informations sont lues à des vitesses élevées sur un disque ou un cylindre de stockage de données rotatif avec un faisceau d'électrons et un photodétecteur sensible. Deux procédés de poursuite des pistes de données sur le support de stockage sont utilisés. Des masques sont prévus pour effectuer la mise en forme des données ou des pistes de données. Ces masques peuvent également être utilisés pour mettre en forme des supports à très haute densité destinés à d'autres applications telles que les mémoires magnétiques et les mémoires optiques à champ proche. On décrit également un procédé de mise en forme de structures radialement périodiques dans lequel on utilise la lithographie interférométrique.
Designated States: CA, JP
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)