Data delivery method and system therefor

  • US 6,018,720 A
  • Filed: 11/07/1997
  • Issued: 01/25/2000
  • Est. Priority Date: 08/08/1997
  • Status: Expired due to Term
First Claim
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1. A data delivery method comprising:

  • providing a purchaser rewritable record medium having a primary data area for storing primary data including software, and an additional data area for storing additional data including purchaser inherent data, purchase data and accounting data therein;

    recording historical data representing a history of the additional data in both of a computer of a software deliverer and said purchaser rewritable record medium, respectively; and

    delivering the primary data, which is requested by a purchaser, from said computer of the software deliverer to said purchaser rewritable record medium when the historical data recorded in said computer of the software deliverer is matched with the historical data recorded in said purchaser rewritable record medium;

    and performing an accounting operation.

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