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Trial usage for encrypted subscription-based data

  • US 8,051,488 B2
  • Filed: 10/05/2006
  • Issued: 11/01/2011
  • Est. Priority Date: 10/05/2006
  • Status: Active Grant
First Claim
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1. A method for decrypting subscription data, comprising:

  • receiving a packet;

    wherein the same packet is broadcast to many electronic devices at the same time;

    determining a packet value from the received packet;

    wherein the packet value indicates a time that the packet is broadcast;

    determining whether the packet is received within a total trial period or outside of the total trial period by comparing the packet value to a final packet value; and

    decrypting the packet when the packet is received within the total trial period and updating the final packet value when the packet value is outside of the total trial period but within a subscription period.

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