Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1993-08-18
1994-07-12
Nguyen, Hoa T.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360 59, 360114, G11B 1304, G11B 1110, G11B 1112
Patent
active
053295056
ABSTRACT:
A system and method for overwriteable magento-optical recording comprises a medium having a data layer and a reference layer. The medium is heated with a laser pulse of short duration which causes a temperature gradient between the data layer and the reference layer. The temperature of the data layer becomes greater than the Curie temperature of the data layer, but the reference layer remains at a temperature below the Curie temperature of the data layer. The magnetic orientation of the reference layer thus remains unchanged and the data layer will orient itself in the same direction as the reference layer. It is therefore not necessary that the Curie temperature of the reference layer be greater than that of the data layer.
REFERENCES:
patent: 4771347 (1988-09-01), Horimai et al.
patent: 4794560 (1988-12-01), Bell et al.
patent: 4855975 (1989-08-01), Akasaka et al.
patent: 4882718 (1989-11-01), Kryder et al.
patent: 4938915 (1990-07-01), Saito
patent: 5051970 (1991-09-01), Ishii et al.
patent: 5093817 (1992-03-01), Fujii et al.
patent: 5144601 (1992-09-01), Maeda et al.
patent: 5175714 (1992-12-01), Kikitsu
patent: 5187694 (1993-02-01), Ichihara et al.
Matsumoto Hiroyuki et al., "Magneto-Optical Disk for Direct Overwrite by Light Power Modulation Method" pp. 45-46.
K. Aratani, et al., "Overwriting on a Magneto-Optical Disk With Magnetic Triple Layers by Means of the Light Intensity Modulation Method," SPIE vol. 1078, Optical Data Storage Topical Meeting (1989), pp. 258-264.
R. Kant, et al., "Laser-Induced Heating of a Multilayered Medium Resting on a Half-Space: Part II-Moving Source," Journal of Heat Transfer, vol. 113, Feb. 1991, pp. 12-20.
IBM Corporation
Millett Douglas R.
Nguyen Hoa T.
LandOfFree
System and method for overwriteable magneto-optical recording does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for overwriteable magneto-optical recording, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for overwriteable magneto-optical recording will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-402144