Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1989-02-24
1992-10-06
Nguyen, Hoa
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369121, 369122, 369124, 369 13, 360114, G11B 708, G11B 1112, G11B 1304
Patent
active
051538687
ABSTRACT:
A magneto-optic recording and regenerating process and the device using it in accordance with the present invention are intended to magnetize the magnetic, or magnet, film of a disk parallel to the plane of the magnetic film to record or erase information. When regenerating information, light beams whose incident plane is substantially perpendicular to the direction of magnetization of the recording medium is applied to the disk, so that the recorded information is regenerated dependent on the light intensity of reflected light obtained in response to the direction and magnitude of magnitization of the disk. Additionally, the magneto-optic disk includes a magnetic film having a coercive force smaller than the saturated magnetization at room temperature, so that irradiating light beams elevate the temperature of the magnetic film but not up to its Curie temperature. Information is then recorded on or erased from the magnetic film with its coercive force decreased by the elevated temperature.
REFERENCES:
patent: 3094699 (1963-06-01), Supernowicz
patent: 3228015 (1966-01-01), Miyata et al.
patent: 3512168 (1970-05-01), Bate
patent: 3521294 (1970-07-01), Treves
patent: 3781905 (1973-12-01), Bernal et al.
patent: 4618901 (1986-10-01), Hatakayama et al.
patent: 4660187 (1987-04-01), Yoshino et al.
patent: 4694358 (1987-09-01), Muchnik et al.
Nguyen Hoa
Sumitomo Metal Industries Ltd.
LandOfFree
Magneto-optic recording and regenerating 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 Magneto-optic recording and regenerating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optic recording and regenerating device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1195869