3D television (3DTV) is a television set that employs techniques of 3D presentation, such as stereoscopic capture, multi-view capture, or 2D-plus-depth, and a 3D display – a special viewing device to project a television program into a realistic three-dimensional field.
There are two ways to watch 3DTV you can watch it wearing 3D glasses or the more modern way where you don't needs them.
3DTV has been around for about a year now and its still not took off there has been small break throws with sports in 3D like 3D football, and 3D darts but that's about it. 3D is good but its not worth the money.
http://electronics.howstuffworks.com/3d-tv.htm
Satellite television
satellite television is where you have a satellite dish that is put up on the outside of your house that receives signals from a satellite that is out in space, the signals are then sent to you box where all your channels are sorted.
satellite tv is amazing but it does have its problems, like sometime the signals can get interrupted by things like bad weather, or even by other signals. One good thing is that you can receive satellite tv anywhere.
This diagram shows how signals are sent up to the satellite in space and back down to your dish at home.
for more information on how satellite tv works go on the link or watch the video.
http://electronics.howstuffworks.com/satellite-tv.htm
Cable television
Cable television is just the same as satellite the only difference being cable television sends its signals threw fibre optic cables under ground which sometimes means you get a better pictures and is more reliable.
The only bad thing is not everyone can have cable as its only available in certain places.
for more information go on the link
http://electronics.howstuffworks.com/cable-tv.htm
Analog Television
Analog television is the analog transmission that involves the broadcasting of encoded analog audio and analog video signal one in which the message conveyed by the broadcast signal is a function of deliberate variations in the amplitude and/or frequency of the signal
Digital Television
Digital television (DTV) is the transmission of audio and video by digital signals, in contrast to the analog signals used by analog TV. Digital tv has a better picture, its more interactive and you can listen to digital radio
For more information go o n the link.
http://electronics.howstuffworks.com/tv15.htm
Interactive television.
Interactive television allows you to have more control of your tv, it allows you to pause, stop, rewind and record television. interactive television also allows you to play games, read emails and also buy movies.
sky Active seems to be one of the best when t comes down to interavtice television, it can be accessed by pressing the read button or going on the EPG.
High Definition
High-definition television (HDTV) is video that has resolution substantially higher than that of traditional television systems (standard-definition television). HDTV has one or two million pixels per frame, roughly five times that of SD (1280 x 720 = 921,600 for 720p, or 1920 x 1080 = 2,073,600 for 1080p). Early HDTV broadcasting used analog techniques, but today HDTV is digitally broadcast using video compression.
See the link below for a video explanation and more details
http://electronics.howstuffworks.com/hdtv.htm
Streaming media and Internet television/ on-demand viewing.
Live streaming, delivering live over the Internet, involves a camera for the media, an encoder to digitize the content, a media publisher, and a content delivery network to distribute and deliver the content.
Internet television (otherwise known as Internet TV, or Online TV) is the digital distribution of television content via the Internet. It should not be confused with Web television - short programs or videos created by a wide variety of companies and individuals, or Internet protocol television (IPTV) - an emerging Internet technology standard for use by television broadcasters. Some Internet television is known as catch-up TV. Internet Television is a general term that covers the delivery of television shows and other video content over the Internet, typically by major traditional television broadcasters. It does not describe a technology used to deliver content (see Internet protocol television). Internet television has become very popular through services such as BBC iPlayr, 4oD, ITV Player (also STV Player and UTV Player) and Demand Five in the United Kingdom
see link for bbc iplayer
http://www.bbc.co.uk/iplayer/
Digital recorders
digital recorders allows you to record a television program then watch it at a later date, you can also pause and rewind live television. SKY+ HD box can record up to 60 gigabytes of programing, record entire series via the series link option and record two programs at the same time. The virgin media TIVO box does the same and much more for more information on the TIVO box go on the link.
http://tivo.virginmedia.com/discover
Pay Per View
Pay-per-view (PPV) provides a service by which a television audience can purchase events to view via private telecast. The broadcaster shows the event at the same time to everyone ordering it (as opposed to video-on-demand systems, which allow viewers to see recorded broadcasts at any time). Events can be purchased using an on-screen guide, an automated telephone system, or through a live customer service representative. Events often include feature films, sporting events and entertainment.Sky in the UK have the channel SkyBoxOffice for their pay per view options.
Film Based
CGI
CGI is new technology used in films, tv programs and in adverts, it uses 3d and or 2d graphics to create special effects. cgi is used to create images, environments, scenes and virtual worlds that cant be created without the use of cgi. cgi is used in both animated and non-animated films.
this video tell you in detail how cgi and 3d animation works.
