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Digital rights management for content rendering on playback devices

  • US 7,882,034 B2
  • Filed: 11/21/2003
  • Issued: 02/01/2011
  • Est. Priority Date: 11/21/2003
  • Status: Active Grant
First Claim
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1. In a client device, a method comprising:

  • receiving a request for playback of digital audio or video content stored on the device, wherein the requested digital audio or video content is included within a particular body of content comprising a plurality of digital audio or video contents accessible by the client device;

    determining an allotted playback duration granted to the device for playing back the particular body of content;

    determining an elapsed playback duration for the device, the elapsed playback duration representing an amount of time previously consumed by the device while rendering the digital audio or video contents of the particular body of content;

    determining whether a predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is satisfied; and

    regulating playback of the particular body of content if the predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is determined to be satisfied.

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