25-08-2017, 09:32 PM
Digital TV technology offers fundamental improvements over analog services. For instance, where an analog signal degrades with distance, the digital signal will remain constant and perfect as long as it can be received. The advent of digital TV benefits the general public because of crystal clear pictures, cd quality sound and access to a range of new entertainment services. Depending upon geographical location, analog television systems are based upon either NTSC, PALor SECAM standards. there are two main global TV standards ,namely DVB and ATSC.by using digital techniques to transmit television ,service providers can carry more information than is possible with analog systems.
IPTV is a new method of transporting digital TV content over a network and is seen as a part of the larger triple play bundle that is typically on offer from network operators worldwide.iptv is a term that describes a system that enables the delivery of the real time television programs, movies and other types of interactive video content over IP based network.
Consumers often do not realize that behind the simple end user iptv environment is a series of powerful components that seamlessly work together to make the delivery of the TV over the broadband networks possible. These components or subsystems include the processing of video, security and the delivery platform. An end to end IP video network infrastructure can include some or all of the followings elements:-
The iptv data center that is responsible for processing and preparing content for distribution across broadband network.
An iptv distribution network consisting of a mix of technologies that carry IPTV content from the data center to end users.
IP digital set top boxes or residential gateways that are installed at the subscribers home and provide connectivity between TV and the ip based access network.
A home network enabling the distribution of data, voice and video between different consumer devices.
A recipe of increased broadband adoption combined with advancements in compressions technologies and the need for telecommunication companies to offer video services to their consumers is helping to grow the size of the global market place. A number of organizations are involved in developing technological standards and products to encourage consumers to adopt IPTV services.