Information reproducing apparatus for reproducing information by

Details Information reproducing apparatus for reproducing information by Information reproducing apparatus for reproducing information by

1997-09-16

1999-09-21

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

G11B 1100

Patent

active

059562960

ABSTRACT:
An information reproducing apparatus for reproducing information by moving a magnetic wall along an information track on a recording medium. The apparatus includes an optical system for irradiating the recording medium with a light spot of an oval shape having a longer axis and a shorter axis, of which the longer axis is substantially parallel to the information track and a ratio of the longer axis to the shorter axis is at least 1.4, and a movement device for performing relative movement between the light spot and the recording medium.

REFERENCES:
patent: 5329517 (1994-07-01), Yamaguchi et al.
patent: 5621706 (1997-04-01), Kawano et al.
patent: 5648134 (1997-07-01), Shiratori et al.
patent: 5656384 (1997-08-01), Nishimura et al.
patent: 5703841 (1997-12-01), Hiroki
patent: 5740133 (1998-04-01), Tamanoi et al.

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