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HbbTV adds ATSC 3.0 watermarking for app discovery, synchronization

The European HbbTV standard and the much more recently developed North American ATSC 3.0 are often now presented as competing alternative technologies for interactive hybrid services enabling broadcasters to derive similar benefits to OTT services. Yet HbbTV has stolen some of ATSC 3.0’s clothes, or at least one of its garments, in order to incorporate audio and video watermarking both for security and to help synchronize apps accessed over a broadband connection with the broadcast signal. This is important in the light of one crucial difference between the two, which is that HbbTV uses the long-established MPEG-2 Transport Stream (TS) for its transport layer, while ATSC, having the benefit of some extra years development of streaming, went for an all-IP…

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