Magnetic media containing data and method for data verification are disclosed. The data verification method utilizes the relative position of specific features of magnetic media signals, such as, peak zero crossings, the ratio of preselected amplitudes, the locii of preselected points along the signal,...http://www.google.com/patents/US5616904?utm_source=gb-gplus-sharePatent US5616904 - Data verification method and magnetic media therefor
