Developing Technologys

High definition

 

 

High definition provides a high resolution compared to a standard definition television so the image and sound are made to appear incredibly clear.  It displays detailed images with far better picture colour, it is sharp, clear, and has life like images compared to a standard TV or film. The image also appears to be wider than ordinary. Below are examples of the difference between high resolution and low resolution images.

 

The Internet

The internet is obviously the most useful and popular global network used by millions of people.  According to internet world stats, there was an estimated 2,267,233,742 Internet users worldwide. Nobody owns the internet or controls it so unlike online services which are controlled, it is decentralized by design. Each independent person can chooses which internet services to use and which services to make available to the global internet community.

Interactive TV

Interactive TV is a system which enables viewers to give feedback information or orders in response to advertisements. This is through an electronic device called a set up box. The newest addition to set up boxes allows viewers to access E-mails via the internet.

Digital TV

 

Digital TV is a new way of receiving television signal from TV companies. Digital TV broadcast better quality sound, a higher definition picture and a lot more variety of channels. It allows users to access information by viewing menus to view programs on a range of channels. There are a variety of different digital TV types such as digital terrestrial, digital satellite TV, digital cable TV, telephone line digital TV & internet protocol television.

 

 

Analogue TV

 

Everywhere in the UK no longer use analogue TV due to “The big switch off” which consisted off everyone switching to digital TV and no longer using analogue. Analogue TV is a device that receives and displays broadcast television signals that are transmitted similar to radio transmissions. The bad thing about analogue TV is that it was known for interference in the picture quality such as ghosting or snow. Also, the lines in the image are transmitted first, then all the even lines, resulting it to be perhaps unclear.

 

 

 

Satellite TV

Satellite TV is a popular choice for many people in the UK. They are metal dishes which appear on peoples roof tops. More consumers every day are luring into the major satellite TV companies which provides movies, sporting events and global news promising the best movie quality and sound picture. It transmits programming through a radio signal. The picture briefly demonstrates how the signaling works.