18-07-2012, 01:00 PM
Internet protocol television
Internet protocol television.docx (Size: 40.48 KB / Downloads: 38)
INTRODUCTION
For most of the twentieth century, the only ways to watch television were through over-the-air broadcasts and cable signals. With broadcast TV, an antenna picks up radio waves to transmit pictures and sound to your television set. With cable TV, wires connect to a set-top box or to your TV itself. These wires run from your house to the nearest cable TV station, which acts as one big antenna. Aside from a few options like satellite TV, broadcast and cable were -- and still are -- the main ways to watch television.
HOW IPTV
There are two things that make Internet TV possible. The first is bandwidth. To understand bandwidth, it's best to think of the Internet as a series of highways and information as cars. If there's only one car on the highway, that car will travel quickly and easily. If there are many cars, however, traffic can build up and slow things down. The Internet works the same way -- if only one person is downloading one file, the transfer should happen fairly quickly. If several people are trying to download the same file, though, the transfer can be much slower.
In this analogy, bandwidth is the number of lanes on the highway. If a Web site's bandwidth is too low, traffic will become congested. If the Web site increases its bandwidth, information will be able to travel back and forth without much of a hassle. Bandwidth is important for Internet TV, because sending large amounts of video and audio data over the Internet requires large bandwidths.
MOBILE IPTV
Mobile IPTV is a technology that enables users to transmit and receive multimedia traffic including television signal, video, audio, text and graphic
services through IP-based the wired and wirelessnetworks with support for QoS/QoS, security, mobility, and interactive functions. Through Mobile
VIDEO ON DEMAND
On-demand videos, on the other hand, are usually arranged like a playlist. Episodes or clips are arranged by title or channel or in categories like news, sports or music videos. You choose exactly what you want to watch, Although it's not live television, you don't have to worry about networks taking down clips because of copyright issues. In addition to the two basic broadcast categories, there are three basic fee structures for Internet TV: