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Method for identifying certification identifying media

  • US 4,855,584 A
  • Filed: 03/10/1987
  • Issued: 08/08/1989
  • Est. Priority Date: 03/13/1986
  • Status: Expired due to Term
First Claim
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1. An identification data recording method for a certification identifying medium, comprising the steps of:

  • encoding predetermined basic data into N encoded data using N algorithms, wherein N is a positive integer;

    detecting N encoded data from an information identification code strip, said information identification code strip being printed or laminated on said certification identifying medium with magnetic materials;

    decoding said detected N encoded data using said N algorithms;

    comprising said decoded detected N encoded data with said basic data;

    encoding said decoded detected N encoded data using said N algorithms when said compared data is identical; and

    ,recording said encoded data on a magnetic recording strip, said magnetic recording strip being provided on said certification identifying medium.

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