The back channel over IP allows a wide variety of interaction schemes. Often, advertisements list interactivity as important IPTV feature. They do not yet fully exploit their potential. Compared to centralized solutions, P2P systems for IPTV are quite new. This results in better load balancing and fault tolerance. It relays traffic within the P2P network. Each peer is a sender and a receiver at the same time. P2P systems rely on a large number of participants (aka peers) that provide their service within a P2P overlay network. This allows a reliable service, although at high costs.Ī peer-to-peer (P2P) approach can eliminate most of the centralized IPTV infrastructure. They use dedicated hardware and network resources for their content distribution. SOFTWARE ITPV PROFESSIONALProfessional IPTV systems, are typically based on a centralized infrastructure. Nevertheless they provide their services in a TV-channel-like fashion, either off-line or via live streaming. YouTube, Vimeo,, and the like transmit user generated content. However, some IPTV systems that are based on the Web 2.0 concept have given up the distinction between sender and receiver. They only replace the transport medium by an IP-based technology. Typical IPTV applications show a similar setup. SOFTWARE ITPV TVTV in the traditional meaning has one provider (server) and multiple receivers (clients). This makes it difficult to easily compare IPTV implementations more abstract characteristics need to be examined. Some IPTV systems are proprietary others rely partly or fully on standards such as RTSP, SDP or UPnP-AV. Each solution has its own set of features and optimizations. In the past years several approaches have been made to achieve different solutions. Unlike other techniques there is no common specification nor standard that can be used to implement IPTV-based services for every purpose. IPTV is a well-known term that describes IP-based television in general. Based on our analysis, we derive a novel architecture for transparently transporting broadcast TV services over IP. The comparison of both approaches allows us to investigate the possible means for convergence. We then examine traditional television broadcast. In the following, we first briefly introduce some typical characteristics of the IPTV systems' basic operation schemes. Therefore, the resulting feature set and quality of the encoded media streams may change. Convergence does not require restoring all physical capabilities of different transport media even though it is desirable. IPTV allows convergent deliverance of television content over IP. In traditional broadcast systems, this would be called simulcast. Throughout this paper we use the term convergence to describe a way of delivering content independently of a specific transport medium. During the transition, consumers can thus benefit from the advantages of both technologies. This allows an easy convergence of digital television and IPTV. In this paper we present NetCeiver, an IPTV architecture that is fully compatible to existing digital television broadcast systems. SOFTWARE ITPV FULLWe also describe a low cost FPGA implementation of the proposed NetCeiver architecture, which can concurrently stream services from up to six full transponders. The use of multicast streaming makes NetCeiver highly scalable. We then present the NetCeiver architecture: it is based on well-known standards such as IPv6, and it allows zero configuration. In this paper we explain why we believe that such a mapping using a light weight framework is an important step towards all-IP multimedia. But none of them can transparently map popular public broadcast services such as DVB or ATSC to IPTV with acceptable effort. Many standards and even more proprietary technologies deal with IP-based television (IPTV).
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