Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1993-01-04
1994-06-28
Pascal, Robert J.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, G11B 1304
Patent
active
053253442
ABSTRACT:
A magneto-optical recording/reproducing device which records information by irradiating a light beam of constant intensity on a magneto-optical recording medium while simultaneously applying a magnetic field thereon through a recording magnetic head; and which reproduces the recorded information through a reproducing magnetic head. The magneto-optical recording medium has a magnetic film formed on a translucent substrate and the magnetic field applied through the recording magnetic head reverses in response to the information to be recorded. The recording magnetic head and the reproducing magnetic head are integrally provided on a single magnetic core in order set their positions easily with respect to each other. By making a magnetic core end-face of the reproducing magnetic head smaller than a light beam spot, information recorded on areas smaller than the light beam spot can be reproduced. A large reproduced output may be achieved by using a magneto-optical recording medium which has a soft magnetic material layer made of soft magnetic material provided between the substrate and the magnetic film.
REFERENCES:
patent: 4612587 (1986-09-01), Kaneko et al.
patent: 4694358 (1987-09-01), Muchnik et al.
patent: 4922454 (1990-05-01), Taki
patent: 5202862 (1993-04-01), Ohta et al.
0298137 (English Equivalent: U.S. Pat. No. 4,694,358 listed as AA).
Nomura, T., "Comparison of Readout Characteristics Between Magnetooptic Transfer Heads and Magnetic Heads", IEEE Transactions of Magnetics 25(6) pp. 4474 (1989).
Takabashi, M., "Extremely High Density Magneto-optical Recording By Using Magnetic Field Modulation Method", Digests of the 13th Annual Conference on Magnetics in Japan, 23aC-10, p. 198, (Nov. 22-25, 1989).
Ishikawa Toshio
Muramatsu Tetsurou
Ohta Kenji
Takahashi Akira
Yamamoto Tatsushi
Conlin David G.
Dinh Tan
Neuner George W.
Pascal Robert J.
Sharp Kabushiki Kaisha
LandOfFree
Magneto-optical recording and reproducing device having integral 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-optical recording and reproducing device having integral, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical recording and reproducing device having integral will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2382054