| 摘要 |
A disk medium includes a substrate and a designed topography of individually magnetizable features formed on the surface of the substrate. At least a portion of the disk topography is formed from an etched layer of magnetizable material deposited on the surface of the substrate. An information storing and retrieving system records information on the disk medium magnetically and reads the recorded information optically or magnetically. The information stored in the disk is of the form of bits each represented by a magnetic field established in the features. The direction of the magnetic field can be in a direction other than the bitstream direction, with the magnetic storing and retrieving system having a pair of non-parallel heads adapted to recognize this direction as representative of discrete logic levels formulating the basis of a non-binary storage system having significantly increased storage density.
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