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System for publishing content on a portable digital storage medium

  • US 7,882,368 B2
  • Filed: 06/01/2009
  • Issued: 02/01/2011
  • Est. Priority Date: 08/02/2002
  • Status: Active Grant
First Claim
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1. A method of publishing creative content to at least one local digital display device, comprising the steps of:

  • storing a first unit of the creative content on a first portable digital storage medium in an encrypted format, the first unit of the creative content encrypted with a selected one of a plurality of private encryption keys;

    encrypting a second unit of creative content using the selected private key and storing the second unit of creative content on the first portable digital storage medium;

    transferring the first portable digital storage medium to the local digital display device;

    entering a preselected public key into the local digital display device, the preselected public key corresponding to the selected private key;

    decrypting at least a portion of the first unit of the creative content by employing the public key using a public key/private key decryption algorithm;

    decrypting at least a portion of the second unit of creative content using a second key different from the public key used to decrypt the first unit of creative content; and

    displaying at least one of the portion of the first unit of creative content and the second unit of creative content on the local digital display device.

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