Patent Document ID: 8811136
Application ID: 13680497
Patent Status: 1

Claim One:
1. A system for detecting and classifying at least one media defect, comprising: a computing system in communication with at least one medium, the computing system configured for: writing a periodic pattern to the at least one medium to yield at least one waveform; detecting at least one defect of the at least one medium based on a comparison of a magnitude of the at least one waveform and a defect threshold; determining magnitudes of at least two harmonics of the at least one waveform; determining a ratio of the magnitudes of the at least two harmonics; classifying the at least one defect as a thermal asperity defect when the ratio of the magnitudes of the at least two harmonics is less than the classification threshold; and classifying the at least one defect as a delaminated defect when the ratio of the magnitudes of the at least two harmonics is not less than the classification threshold.