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Processing context information

  • US 9,044,855 B2
  • Filed: 06/20/2012
  • Issued: 06/02/2015
  • Est. Priority Date: 06/22/2011
  • Status: Expired due to Fees
First Claim
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1. A system for generating contexts of targets to estimate a high-order context from a plurality of contexts, the system comprising:

  • a detection device comprising;

    a sensor for detecting a first target;

    a module for extracting, from feature data detected by said sensor, said first target and a first primary context of said first target, wherein said first primary context of said first target indicates a presence of said first target at a given location during a given time interval; and

    a module for encrypting said primary first context with a key corresponding to said first target;

    a storage device for recording the encrypted first primary context from said detection device; and

    a processing device comprising;

    a module for receiving said first encrypted primary context from said storage device;

    a module for receiving said key corresponding to said first target involved in said first encrypted primary context;

    a module for decrypting said first encrypted primary context using the received key; and

    a module for estimating a high-order context using said decrypted first primary context by comparing the decrypted first primary context of said first target with primary contexts of one or more other of the targets to determine whether said first target and the one or more other targets share the given location as a common location during the given time interval;

    wherein said processing device further comprises a module for requesting said detection device to delete information on a key corresponding to a specific target.

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