Certification method of magnetic recording medium, certification system, and certification possible magnetic recording medium of magnetic recording medium

摘要

The expedient whose reliability of true decision of magnetic recording medium of the magnetic card and the like is high is offered. As for certification method of magnetic recording medium, making use of the entry signal where at least just the optional quantity shifted the aforementioned entry signal in the other are provided in the basic information entry and record which at least write basic information to one which is provided in the record territory of magnetic recording medium magnetic track/truck making use of the entry signal territory one magnetic track/truck it forms the information of the certification which is based on the aforementioned shifting quantity, by comparing with the reading signal from the reading signal and the aforementioned other magnetic track/truck from the magnetic track/truck of the aforementioned one information of certification on the basis of the reading signal from entry and the aforementioned other magnetic track/truck, or it records on the basis of the information of the aforementioned certificationCertification of medium is executed.