Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1991-05-14
1993-02-02
Howell, Janice A.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 13, 369 771, 369 772, G11B 2300, G11B 1304
Patent
active
051843420
ABSTRACT:
An information processing unit of the present invention stores at least information from an optical disc by directing a laser beam, under the application of a magnetic field, onto the optical disc with the information recorded thereon. The device includes a housing having an access hole through which the optical disc is inserted and a record/playback/erase head for providing an illumination using the laser beam and electromagnet for generating the magnetic field. A movable first guide member is provided for guiding a first holding member for holding a cartridge with the optical disc held therein and second holding member for holding an electromagnet and a fixed second guide member is provided for guiding the first guide member and first holding member. Upon movement of the first guide member, the optical disc being inserted into the housing through an access hole is guided to a position, while being maintained in a predetermined positional relation relative to the electromagnet, where the disc is illuminated with the laser beam coming from the record/playback/erase head upon information playback and the electromagnet is guided to a position where the magnetic field is applied to the optical disc.
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Howell Janice A.
Kabushiki Kaisha Toshiba
Nguyen Kiet T.
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