Patent ID: 6609202
Filing Date: 2003-08-19
Classification: H04H,H04L

Abstract:
A method for delivering displayable data to a plurality of processing units, each of said processing units being located in a separate remote site and connected to an output unit, said method comprising:providing a first and a second set of digital data, said first set of digital data comprising a content portion and an identification label, said content portion being displayable on said output unit, said second set of digital data being displayable on said output unit and related to said first set of digital data; distributing said first set of digital data to each of said plurality of processing units; receiving said identification label from at least a first and a second one of said processing units; after receiving said identification label from said first processing unit: generating a first encrypted digital data by encrypting said second set of digital data using a first key, and delivering said first encrypted digital data to said first processing unit; and after receiving said identification label from said second processing unit: generating a second encrypted digital data by encrypting said second set of digital data using a second key, and delivering to said second processing unit said second encrypted digital data.