Patent ID: 6256785
Filing Date: 2001-07-03
Classification: H04N

Abstract:
A system for allowing a user to make a selection from a transmitted image in a one-way communication, wherein the system includes protocol data for enabling at least a portion of the transmitted image to be selectable, a generator for generating a signal, and a receiver for receiving the signal, the system comprising:a generator for generating a signal comprising a first data set and a second data set, the first data set comprising first event data for enabling display of the transmitted image without resort to the second data set and the second data set comprising protocol data for enabling at least a portion of the transmitted image to be selectable, the protocol data comprising at least the following explicit data elements:link data associated with the first event data for enabling the selectable portion of the transmitted image to be selectable;sync data associated with the link data for enabling time based synchronization of the link data with the first event data;indication data for indicating the number of selectable portions of the transmitted image;coordinate data for defining the selectable portion of the transmitted image; anddescription data for describing second event data presented when a user selects the selectable portion of the transmitted image; anda receiving device for receiving at least a portion of the signal including at least a portion of each of the first and second data sets including the indication data for displaying the transmitted image such that the user may make a selection therefrom.