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Software charging system and software data utilization permitting device

  • US 5,761,651 A
  • Filed: 06/13/1995
  • Issued: 06/02/1998
  • Est. Priority Date: 08/10/1994
  • Status: Expired due to Term
First Claim
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1. A software charging system comprising a utilization permitting device permitting utilization of a software program, and an authorization center for setting a utilization amount on said utilization permitting device, wherein the utilization amount is a number of days of allowed use of the software program and said utilization permitting device includes:

  • a clock obtaining a date and a time;

    date and time storing means for storing the obtained date and time until obtaining a next date and next time;

    a utilization permission processing part generating utilization permitting signals for utilization requests in accordance with a balance of the utilization amount set by the authorization center; and

    a utilization amount managing part calculating the balance of the utilization amount based on the date and time obtained by said clock.

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