Programme 1

Titles

01:13-04:00
How does digital television work? What are pixels? How do pixels make up an image? Large-scale demonstration of how the pictures can be changed by replacing pixels.

04:00-07:30
The importance of compression in digital television. How compression is used in mobile phone messaging. What is Short Message Service (SMS)? How smaller compressed packages of information are easier to send than larger ones. The role of Difference Information in compression. Bandwidth.

07:30-09:20
How Sky Sports Active uses multiple digital channels to allow viewers to see different camera angles and player cams.

09:20-11:15
How the viewer can interact with the programmes to influence outcomes. Examples given for voting in the 2001 Brit Awards and Survivor.

11:15-12:25
Potential uses for viewers with disabilities. How a digital channel can carry information for viewers who have visual impairment. Example from Coronation Street, showing how scenes can be brought to life using a description.

12:25-14:00
How over-compression causes problems when watching moving images. Live demonstration using a web-cam.

14:00-19:00
Virtual Reality Presenters. How virtual reality newsreader ANANOVA is made and how programmers use 42 phonetic sounds to build up her speech. Small section on Vince Fin from Channel 4's Karaoke Fish Tank.

19:00
Titles and end