Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1993-12-07
1995-06-06
Epps, Georgia Y.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
369116, 3692752, G11B 1304
Patent
active
054228654
ABSTRACT:
A magneto-optical recording method includes the steps of applying an external magnetic field perpendicularly onto the magnetic thin film with perpendicular magnetization of a magneto-optical recording medium and projecting a light beam onto the magneto-optical recording medium; and modulating the intensity of the light beam between the first light intensity and the second light intensity in response to the information to be recorded while shifting a spot of the light beam, thereby recording information. In the above method, the first light intensity is set such that by reducing the coercive force of the magnetic thin film with perpendicular magnetization, a magnetic domain is formed on the magnetic thin film with perpendicular magnetization, and that the magnetic domain is moved as the spot of the light beam is shifted. The second light intensity is set such that by increasing the coercive force of the magnetic thin film with perpendicular magnetization, the magnetic domain is fixed to the position.
REFERENCES:
patent: 4939717 (1990-07-01), Ohno et al.
patent: 5038338 (1991-08-01), Terao et al.
patent: 5144601 (1992-09-01), Maeda et al.
patent: 5257256 (1993-10-01), Terao et al.
PCT/JP92/01701 (WO 93/13523), Jul. 8, 1993.
Hirokane Junji
Katayama Hiroyuki
Nakayama Junichiro
Ohta Kenji
Takahashi Akira
Conlin David G.
Dinh Tan
Epps Georgia Y.
Fournier Kevin J.
Sharp Kabushiki Kaisha
LandOfFree
Light modulation method for magneto-optical recording device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light modulation method for magneto-optical recording device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light modulation method for magneto-optical recording device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-992663