Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1990-05-18
1993-06-15
LaRoche, Eugene R.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, G11B 1110, G11B 1304
Patent
active
052205444
ABSTRACT:
A magnetic optical disk player comprises a turn table for turning a magnetic optical disk, guides for guiding a recording head carriage and an erasing head carriage along two different radial directions of the turn table, drivers for individually driving the recording head carriage and the erasing head carriage, and bias magnets for generating bias magnetic fields distributed along moving areas of the recording and erasing head carriages and having the directions opposite to each other, wherein the drivers include movable coils coupled with the recording head carriage and the erasing head carriage, drive magnets for generating drive magnetic fields interlinking the recording head coil and the erasing head coil, and a leaking flux from the drive magnets passes through the plane in the same direction of the bias magnetic field. The directions of the bias magnetic fields for erasing and recording heads are opposite to each other. The drive magnetic fields for positioning the erasing head carriage and the recording head carriage are also opposite to each other. The bias magnetic field and the drive magnetic field are additively coupled with each other.
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Kikuchi Ikuya
Sato Ryo
Glembocki Christopher R.
LaRoche Eugene R.
Pioneer Electronic Corporation
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