Retrieving content or additional data from different sources

Official title: {Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet (web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859)}

H04N21/4622 (Retrieving content or additional data from different sources) appears on 6,006 US grants and 7,913 published applications in this corpus.