G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/10 (2006.01) G11B 5/00 (2006.01)
Patent
CA 2048583
A magnetic recording and reproducing apparatus using a recording medium made of a ferrimagnetic material, comprises a magnetic head having a width larger than that of an information recording track of the recording medium. For recording, light beams are radiated from a light source onto a selected information recording track to raise the temperature of the irradiated area to approximately a Curie temperature so as to allow recording only on that area. For reproduction, light beams are radiated from another light source onto areas on both sides of a selected information recording track to raise the temperature of the irradiated areas to approximately a magnetic compensation temperature so as to allow reproduction only from the desired track, thus preventing crosstalk from the side tracks.
Hirokane Junji
Murakami Yoshiteru
Nakajima Junsaku
Ohta Kenji
Takahashi Akira
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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