Static information storage and retrieval – Information masking – Polarization
Patent
1983-05-11
1986-04-29
Moffitt, James W.
Static information storage and retrieval
Information masking
Polarization
360 59, 350378, G11C 1142
Patent
active
045861617
ABSTRACT:
A thermo-magnetic method for recording of a bit of information in each domain of an amorphous alloy thin-film layer supporting small stable domains. Each domain in the recording layer is first magnetized in a first direction, corresponding to a first binary state, by exposure to a saturation magnetic field. The remaining binary state is temporarily or permanently recorded in a particular domain by heating (to a lower or higher temperature) that domain volume of the recording layer above a predetermined temperature, but less than the melting temperature of the layer material, and thereafter cooling the heated domain in the presence of a bias magnetic field of direction opposite to, and magnitude less than, the saturation field. The binary state of each domain is read by interrogation with a beam of energy and utilization of differential effects between the interrogation beam and the direction of the magnetic field in the interrogated domain.
REFERENCES:
patent: 3631415 (1971-12-01), Aagard et al.
patent: 3651504 (1972-03-01), Goldberg et al.
patent: 3949387 (1976-04-01), Chaudhari et al.
patent: 3965463 (1976-06-01), Chaudhari et al.
Davis Jr. James C.
General Electric Company
Krauss Geoffrey H.
Moffitt James W.
Snyder Marvin
LandOfFree
Permanent thermo-magnetic recording of binary digital informatio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Permanent thermo-magnetic recording of binary digital informatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent thermo-magnetic recording of binary digital informatio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-145349