×

Content-based unique material identifiers

  • US 10,438,634 B2
  • Filed: 08/26/2013
  • Issued: 10/08/2019
  • Est. Priority Date: 04/05/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method of distinguishing a first digital media file from a second digital media file, the method comprising:

  • at a first client hosting a first media processing software application, receiving a link to a first digital media file that is not associated with a unique material identifier (UMID);

    using the first media processing application;

    accessing the first digital media file;

    selecting a first quantity of data from a plurality of non-contiguous portions of media essence of the first digital media file; and

    generating a first UMID for the first digital media file directly from the first quantity of data, wherein selecting the first quantity of data balances requirements that a size of the first quantity of data is;

    small enough to enable the first media processing application to generate the first UMID in a time that is not perceptible to a user of the first media processing software application when accessing the first digital media file; and

    large enough to ensure an acceptable likelihood that the first UMID uniquely identifies the first digital media file;

    at a second client hosting a second media processing software application, receiving a link to a second digital media file that is not associated with a UMID;

    using the second media processing application;

    accessing the second digital media file;

    selecting a second quantity of data from a plurality of non-contiguous portions of media essence of the second digital media file; and

    generating a second UMID for the first second digital media file directly from the second quantity of data, wherein selecting the second quantity of data balances requirements that a size of the second quantity of data is;

    small enough to enable the second media processing application to generate the second UMID in a time that is not perceptible to a user of the second media processing software application when accessing the second digital media file; and

    large enough to ensure an acceptable likelihood that the second UMID uniquely identifies the second digital media file;

    wherein each of the non-contiguous portions of the first digital media file and of the second digital media file are derived from different sets of one or more frames of media essence of the respective digital media files, and wherein the first and second UMIDs are independent of times when the first and second digital media files were received, such that the first UMID is different from the second UMID when at least one of;

    the first digital media file features a first media content in a first format and the second digital media file features the first media content in a second format that is different from the first format; and

    the first digital media file features a first shot of a first subject and the second digital media file features a second shot of the first subject, and the first shot is different from the second shot; and

    associating the first and second UMIDs with their respective digital media files by at least one of;

    creating a pointer from the first and second UMIDs to their respective digital media files; and

    writing the first and second UMIDs into a metadata field of their respective digital media files.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×