Patent ID: 6339693
Filing Date: 2002-01-15
Classification: H04H,H04L

Abstract:
An information distribution system for distributing information to users in separate locations, said system being associated with a plurality of receiving devices each located in one of said separate locations, each of said receiving devices connecting to a display device that displays said information, said system comprising:a remote site containing a first set of digital data and connecting to said plurality of receiving devices; and a transmitter that transmits television frequency signal comprising a video signal and a second set of digital data, said second set of digital data comprising a first set of displayable data displayable on said display device in a first way, a second set of displayable data displayable on said display device in a second way for facilitating said users to select said second set of displayable data, a first set of non-displayable data for indicating a prescence of said second set of displayable data, and a first linkage reference, said first linkage reference being associated with said second set of displayable data and said first set of digital data, said first linkage reference being not displayable on said display device; wherein at least one of said receiving devices causes said display device to display said first set of displayable data in said first way and said second set of displayable data in said second way, extracts said first linkage reference, and sends said first linkage reference to said remote site.