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ATSC 3.0 is the next-generation broadcast television suite of around 20 standards including transmission, audio, video, captioning, metadata, watermarking, companion devices, security, and personalization. Among others, ATSC 3.0 uses MPEG DASH delivery format for broadcast and broadband delivery of media and data. In order to fulfil the use cases and requirements of ATSC 3.0 including broadcast-only, broadband and hybrid (broadcast/ broadband) delivery, as well as a multitude of new features, DASH-IF developed a DASH interoperability profile specifically designed for ATSC 3.0 standard. This profile supports broadcast and broadband delivery, codec signalling (audio, video, subtitle), interactivity & events, metadata, targeted & personalized ad insertion, and advanced security & content protection schemes. By the choice of DASH formats and HTML-5 based applications, ATSC 3.0 services are expected to be consumable not only on vertically integrated devices such as TV sets, but also on other types of devices such as PCs, tablets, game consoles and mobile phones. This paper will introduce the rationales, benefits and opportunities of such an approach and provide an overview of the ATSC 3.0 DASH profile.

Multiple CAS (Conditional Access System) could be safely downloaded and implemented in IPTV environment. Domestic standard of iCAS (Interchangeable CAS) which is providing device compatibility and mobility, can only defines CAS replacement for protecting Real-Time Streaming broadcast. CAS, however has limitations in IPTV's two-way communication environment where it needs to fulfill contents protection requirements of various broadcasting service. In order to supplement the limit of CAS, DRM protection technology should be required. Contents for real time broadcasting service or real time VOD service could be protected by CAS technology whereas services such as PVR, download VOD service or downloaded contents sharing could be protected by DRM technology. Therefore, a flexible IPTV device service environment could be constructed by mutual protection of CAS and DRM. This essay is going to research on the method of applying DRM based on iCAS standard, as well as proposing a system configuration applied with iCAS/DRM in commercialization.

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