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DISKLIKE RECORDING MEDIA, A METHOD FOR DETECTING FORGED DISKS, AN ANTI-FORGERY SYSTEM FOR PERFORMING A TRUE-FALSE JUDGEMENT BASED ON INFORMATION COLLECTED FROM THE RECORDING MEDIA, AND A MANUFACTURING APPARATUS FOR RECORDING INFORMATION IN THE DISKS

  • US 6,363,043 B1
  • Filed: 03/08/1999
  • Issued: 03/26/2002
  • Est. Priority Date: 03/10/1998
  • Status: Expired due to Fees
First Claim
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1. A recording medium in which ordinary information is stored with said ordinary information being irrelevant when performing a true-false judgement to identify a forged product comprising:

  • first information stored in said recording medium selected from a first group of true-false judgement patterns prepared beforehand; and

    second information stored in said recording medium selected from a second group of true-false judgement patterns prepared beforehand;

    wherein a combination of said first information and said second information is necessary for performing a true-false judgement to identify a forged product.

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