How the Olympic torch relay is broadcast live

Covering a continuously moving object is no easy task

Here's my report explaining the technology behind the live broadcasting of the torch relay. Some 8,000 runners are carrying the torch over a total distance of 8,000 miles, and communities across the UK are already coming out on the streets in large numbers to join in the fun.

But broadcasting every minute of the event live on the web involves quite a major technological challenge. The pictures are beamed back not via satellite but over the 3G mobile phone network - and with the torch making its way through parts of the country where 3G coverage is patchy, some clever tricks have to be employed to make sure the screen doesn't go black. And, in an experiment which could point the way forward for live broadcasting of moving events, an unmanned aerial vehicle - or UAV - is on standby to beam pictures back from especially remote areas.

Click here for full coverage of the torch relay

Rory Cellan-Jones Article written by Rory Cellan-Jones Rory Cellan-Jones Technology correspondent

Regin, new computer spyware, discovered by Symantec

Computer security firm Symantec discovers what it says is one of the most sophisticated pieces of malicious software ever seen.

Read full article

More on This Story

More from Rory

Features & Analysis

BBC Future

Changing shape

What Concorde was like to fly

The supersonic icon of air travel Read more...

Programmes

  • Ladybird - a robot designed to help with farm workClick Watch

    From weed detecting to a robotic dairy - the tech that could help farmers be more efficient

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.