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Virtual vault of licensed content

  • US 10,664,575 B2
  • Filed: 05/02/2007
  • Issued: 05/26/2020
  • Est. Priority Date: 05/02/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a network;

    a content server, wherein in operation, the content server;

    receives a request for content from a single playback device coupled to the network;

    provides, in response to the request, the content to the single playback device if the single playback device has sufficient storage to store the content;

    provides, in response to the request, the content to external storage if the single playback device does not have sufficient storage to store the content;

    a license server coupled to the content server, wherein in operation, the license server;

    generates a license for the content, the license being stored locally at the license server;

    provides an electronic ticket (“

    e-ticket”

    ) to the single playback device, the e-ticket including permissions associated with the license and an identification of the content;

    a state server coupled to the content server, wherein in operation, the state server;

    receives from the single playback device content state information corresponding to a state of the content when the content is deleted from the single playback device,verifies a cryptographic signature of the content, the verification of the cryptographic signature authenticating the content state information before accepting storage of the content state information, the cryptographic signature verified using a device certificate including an identity to tie the single playback device to an entity owning the state of the content and the content, andprovides, in response to a request from the single playback device, the request including the e-ticket including the permissions associated with the license and the identification of the content, the content state information to the single playback device, thereby managing storage and retrieval of the state of the content after the content has been deleted from the single playback device;

    wherein the single playback device has the permission to execute the content in accordance with the state of the content provided in the content state information.

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