Patent ID: 8782689
Filing Date: 2014-07-15
Classification: H04L,H04N

Abstract:
1. A method, comprising: applying, to at least one portion of content, a plurality of contextual index detection functions, said contextual index detection functions each: providing at least one complementary element associated with each contextual index, if each associated information cue indicates the presence of the contextual index; and combining said content and said at least one complementary element for broadcasting thereof; where one of the plurality of contextual index detection functions detects whether a primitive element at least similar to a reference primitive element associated with the one of the plurality of contextual index detection functions is present in the content, calculates a difference between the at least similar primitive element, when present, and the reference primitive element, and delivers a presence cue indicating the presence of an associated contextual index if the difference is below a predetermined threshold.