WRITING INFORMATION MEDIUM, METHOD AND DEVICE FOR ASSESSMENT OF WRITING INFORMATION MEDIUM AND MANUFACTURING METHOD OF WRITING INFORMATION MEDIUM

摘要

FIELD: information technology.;SUBSTANCE: method of writing medium assessment is suggested. The method assesses the address reproduction error rate from the oscillation signal amplitude fluctuation value, as well as from the signal-to-noise ratio (SNR). Then, the certain range with low error rate should be set, and it should be defined whether the address reproduction error rate lies within the certain range.;EFFECT: assessment of the reproduction error rate.;7 cl, 27 dwg