Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1987-06-18
1989-07-04
Psitos, Aristotelis M.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360114, G11B 1114, G11B 1304
Patent
active
048456969
ABSTRACT:
Apparatus for recording and reproducing information in record tracks on a rotatable record disc comprises a disc driving portion for rotating the rotatable record disc about an axis of rotation, a pair of optical heads each facing the rotatable record disc and respectively positioned on opposite sides of the axis of rotation, and a head driving portion for moving the optical heads simultaneously towards or away from each other in a radial direction on the rotatable record disc. Each optical head generates a first light beam used selectively for erasing and writing an information signal in the record track and a second light beam used for reading an information signal from the record track and causes the first and second light beams to impinge upon the record track on the rotatable record disc in such a manner that the first light beam precedes the second light beam in a direction along the record track.
REFERENCES:
patent: 4564931 (1986-01-01), O'Hara et al.
patent: 4566088 (1986-01-01), Yoshida et al.
patent: 4611317 (1986-09-01), Takeuchi et al.
patent: 4611318 (1986-09-01), Winslow
patent: 4638472 (1987-01-01), Ogata et al.
patent: 4680594 (1987-07-01), Bracht
patent: 4730899 (1988-03-01), Kime et al.
Henmi Fumiaki
Kobayashi Yuhei
Ohtsuki Tadashi
Dowden Donald S.
Eslinger Lewis H.
Maioli Jay H.
Nguyen Hoa T.
Psitos Aristotelis M.
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