Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1992-10-26
1994-07-12
Mottola, Steven
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, G11B 1100
Patent
active
053295030
ABSTRACT:
A magneto-optical disc recording/reproducing apparatus in which a magneto-optical disc, a disc rotating and driving unit, an optical head device, an external magnetic field generating unit and a controlling device are contained as one in an outer casing. That is, the apparatus includes the disc rotating and driving unit which has a diameter of not more than 67 mm and in which the magneto-optical disc is housed and rotationally driven at a constant angular velocity, the optical head device for radiating a light beam to the magneto-optical disc, the external magnetic field generating unit arranged facing the optical head device with the magneto-optical disc in-between and adapted for applying a perpendicular magnetic field to the magneto-optical disc when recording information signals on the magneto-optical disc, the controlling device for controlling the disc rotating and driving unit, the optical head device and the external magnetic field generating unit and the outer casing having a width of not more than 70 mm, a depth of not more than 100 mm and a height of not more than 25.4 mm and adapted for accommodating the magneto-optical disc, the disc rotating and driving unit, the optical head device, the external magnetic field generating unit and the controlling device, for increasing the capacity for information signals and reducing the apparatus size.
REFERENCES:
patent: 4823336 (1989-04-01), Inada et al.
patent: 4914647 (1990-04-01), Ono et al.
patent: 5025436 (1991-06-01), Crain et al.
patent: 5027334 (1991-06-01), Yamanaka et al.
patent: 5070494 (1991-12-01), Emoto et al.
patent: 5091898 (1992-02-01), Bessho et al.
patent: 5115423 (1992-05-01), Maeda et al.
patent: 5122998 (1992-06-01), Mizuno et al.
patent: 5124971 (1992-06-01), Nomura et al.
patent: 5132944 (1992-07-01), Berg
patent: 5172367 (1992-12-01), Hinotani
patent: 5187702 (1993-02-01), Takahashi
patent: 5220543 (1993-06-01), Kuroda et al.
Kudo Jun-ichi
Ohmori Kiyoshi
Seo Katsuhiro
Watanabe Tetsu
Mottola Steven
Sammut Charles P.
Sony Corporation
LandOfFree
Magneto-optical disc recording/reproducing apparatus 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 disc recording/reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical disc recording/reproducing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-402135