Patent ID: 6249396
Filing Date: 2001-06-19
Classification: G11B

Abstract:
An apparatus for recording and reading a digital signal, comprising:a magnetic recording medium having a track, said track having first and second recording regions that are substantially parallel to each other;a signal generator for generating a first signal of one polarity and a second signal of polarity opposite to that of said first signal;an erase head for recording said first and second signals on said first and second recording regions respectively so as to polarize said first and second recording regions in different orientations;a write head for recording a third signal on both of said recording regions, said third signal overwriting the different polarization orientations of said first and second recording regions created by said erase head and creating magnetic transitions on said first and second recording regions; anda read head for reading said magnetic transitions from both said first and second recording regions and producing a fourth signal which comprises a contribution from the magnetic transition on said first recording region and a contribution from the magnetic transition on said second recording region.