DEVELOPING TECHNOLOGIES IN TV AND FILM
TV has come a long way since they were invented in the 1920's. No longer are they huge boxes with little screens, as many developments have been made since then. I am going to list a number of things and give a brief explanation of how TV has changed.
3D TELEVISION
TV sets have become so advanced that now you can watch your favourite programmes in 3D.
There are several ways to display a 3D image. Displaying offset images that are filtered seperately to the left and right eye is the basic requirement of producing a 3D image. Two strategies have been used for this: the light source can split the images directionally into the viewer's eyes or the viewer wears a pair of glasses to filter the seperate offset images to each eye.
To project stereoscopic image pairs to the viewer, there is a vary of different technology techniques - such as;
- with lenses
- Anaglyphic 3D
- Polarisation 3D
- Alternate-frame Sequencing
- Head-mounted display
- Autostereoscopic display or Auto 3D
In the UK, the only provider of 3D TV is from Sky.
Sky first broadcast a Premier League football match between Arsenal and Manchester United in 3D in January 2010.
In October of the same year, Sky created the first ever 3D only channel in the UK. It broadcasts a mixture of movies, entertainment and sport for 14 hours a day.
Since then, there have been many 3D shows available on the channel. David Attenborough's show 'Flying Monsters 3D' was the first one shown. Sky then agreed deals with some of the world's most famous movie production companies, such as 'Walt Disney Pictures', '20th Century Fox' and 'Warner Bros.' alongside more, to exclusively showcase all of the studio's latest 3D releases. - including the world premiere of 'Avatar 3D'.
They also screened a Bollywood dance routine at St. Pancras railway station in 3D, as well as signing a deal with 'Nintendo' to provide content from Sky 3D to the Nintendo 3DS and announcing that Kylie Minogue's latest world tour would be shown on Sky 3D in the summer of 2011.
SATELLITE TELEVISION
For people who wish to have a satellite TV, you need to have an outdoor antenna (referred to as a satellite dish). The dish will placed on the side of your house, near the top and placed in the best position to pick up a signal from the satellite that is somewhere in the sky.
To recieve the signal, you will either have 1 of the 2 things;
- a satellite tuner module which is built into the TV set or
- an external set-top box which you have to connect to your TV
You can also tune in to a satellite by using a card or a USB stick which you will have to attach to a personal computer. Around the world, often in areas that are not serviced by cable or terrestial providers, satellite TV provides a wide range of services and channels.
SATELLITE PROVIDERS
Sky are the only satellite provider in the UK.
SATELLITE PROVIDERS
Sky are the only satellite provider in the UK.
You put the Sky dish on the side of your house, and you recieve a Sky card which slots into the Sky box and you recieve the channels that you are entitled to, aswell as any channels that you pay extra for (HD, 3D or for Sky Box Office)
CABLE TELEVISION
Cable TV works quite a bit differently from Satellite TV. Rather than having a dish outdoors, Cable TV works from under the ground.
Cable TV provides the TV progams to the viewers by radio frequency signals being trasmitted to TV's through coaxial cables or digital light pulses through fixed optical fibers located on the subscriber's property. Radio programming, the Internet, telephony and similar services may also be available.
The majority of TV sets already have a cable television tuner built in that is delivered as an analog signal.
INTERACTIVE TELEVISION
FORMS OF INTERACTIVE TV
The term 'interactive TV' refers to many different types of interactivity and this can make it harder to understand.
Interactivity with a TV set
This is the simplest type of interactive TV. It is very common, starting with using the remote to 'channel-surf' and now things like video-on-demand, recording and pausing/re-winding/fast-forwarding live TV. Though this form of interactive TV is not insignificant, critics claim that saying that using a remote control to turn TV sets on and off makes television interactive is like saying turning the pages of a book makes the book interactive.
Interactivity with TV program content
This is seen as the one that is the 'proper' form of interactive TV. It is also the hardest to produce.
This technique is based on the idea that the actual program can change on the viewers feedback. Advanced forms, not commonly used, are when certain programs endings or plot details can be influenced or changed by the viewer.
This happens usually when a program invites the viewers to give their opinions or views of the show. The Xtra Factor - a live behind-the-scenes sister show of The X Factor - is a good example of this. In portions of the broadcast, viewers can phone in, text, e-mail or 'tweet' (messaging from the social networking site Twitter') questions or direct statements to the presenters or guests of the show. They can also speak with the contestants and judges from The X Factor.
Interactive TV services
Many of the major channels in the UK offer interactive services for the viewers to enjoy. By pressing the red button on your Sky remote, a varied number of options become available.
On the BBC, when you press the red button you can see all the latest news to do with sport, politics, showbiz and many more. In certain shows, you are also able to see the behind-the-scenes or the making of your favourite BBC shows.
On one occasion, fans of the BBC school based drama Waterloo Road were allowed to see a spin-off, titled 'Waterloo Road: Reunited', which saw old cast members being brought back together for a short series about how they are growing up and moving on from their school days. This was only available on the red button, although now you can see it on BBC iPlayer, which I will talk about later...
On the Sky Sports channels, when a live football match is being played there are many different serviced available when you press the red button during the match. The serviced available are different camera angles, one camera following just one player through out the match, an alternative commentary provided by one fan each of the two clubs playing (known as Fan Zone) as well as many others.
Here is a clip from Fan Zone. Although the clip shows the commentators in their booth, when you press the red button you will actually watch the match with their voice being played over. So, this isnt what you see, this is what you hear...
HIGH DEFINITION TELEVISION
High definition TV is when the resolution is substantially higher than that of traditional television systems (now known as Standard Definition). Early HDTV broadcasting used analog techniques, but today HDTV is digitally broadcast using video compression.
Most major channel have HD options nowadays. The BBC, ITV, Channel 4 and FIVE offer HD channels and so do every Sky Sports channel and most Sky movie channels too. And as you have to pay for HD, the HD channels are seperate to the original Standard Definition channels. So the originals stay in the same place but the HD alternatives are much further down the EPG listings.
Most people have HD TV sets, but aren't able to watch the HD channels as you need a HD reciever - which costs extra. I personally don't see why people should have to pay extra for it. If you have the TV (that you have paid more for than a Standard Definition TV) then why should you pay more for only a handful of channels where some of them won't interest you? People say that the best things to watch in HD are the movie, sport and wildlife channels. I, for one, am happy with my standard definition movie and sport channels and am not interested in watching wildlife programs. I understand that people will be but then again maybe they dont want to pay for sports? So for that reason I think the extra cost is unfair to the customer.
STREAMING MEDIA & INTERNET TV/ON-DEMAND VIEWING
Streaming media is when mulitmedia is presented to a streaming provider (most commonly the Internet on your computer, phone or tablet). The name is actually the delivery method of the multimedia rather than the actual process itself.
Live streaming usually occurs for a major news story (for when you may be out or not able to watch a TV and you can watch it on your phone, tablet or laptop) or when, for example, a person who regularly uploads videos to YouTube and gains enough fans and subcribers for he or she to recive feedback on his or hers videos.
Here is an example of an old live stream from about a month ago that I found on YouTube...
A common technique of streaming are the 'On-demand' services that the major channels provide for their viewers who may have missed the original broadcast.
BBC iPlayer, ITV Player, 4OD and Demand 5 are the services provided by the 4 'terrestrial' channels.