Distributing quasi-unique codes through a broadcast medium

Distributing quasi-unique codes through a broadcast medium

  • CN 101,449,581 A
  • Filed: 11/20/2006
  • Published: 06/03/2009
  • Est. Priority Date: 05/31/2006
  • Status: Active Application
First Claim
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1. , a kind of content supplier that makes can be presented on the method for verifying on the device to the particular item content, and this method may further comprise the steps:

  • Locate multimedia signal receiving presenting device (14), wherein said multi-media signal comprises the sign indicating number of embedding;

    From described multi-media signal, extract the sign indicating number of described embedding;

    Present the device identification that device (14) is associated and handle to the sign indicating number of described embedding and with described by hashing algorithm to obtain terminal use'"'"'s sign indicating number;

    Present described terminal use'"'"'s sign indicating number with the appreciable form of user.

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