Disc apparatus having a plurality of reading/recording head driv

Details Disc apparatus having a plurality of reading/recording head driv Disc apparatus having a plurality of reading/recording head driv

1995-11-27

1997-11-11

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 75, 360 7813, G11B 1100, G11B 2112

Patent

active

056871422

ABSTRACT:
A head reads information from and/or records information to a disc. A head driving unit drives the head on a disc in substantially radial direction thereof, the moving being executed in either a first driving manner or a second driving manner different from the first driving manner and the moving of the head effecting seeking of a track formed on the disc. A disc loading detecting unit detects loading of a disc in said disc apparatus. A switching unit switches over a driving manner from one to another among the first and second driving manners, wherein the switching unit selects the first driving manner while a disc is loaded in the disc apparatus and the switching unit selects the second driving manner while a disc is not the in the disc apparatus.

REFERENCES:
patent: 4783706 (1988-11-01), Shoji et al.
patent: 5521770 (1996-05-01), Tamada

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