What is high definition TV?
It is a TV format that contains upto five times more detail than the standard definition TV. This improvement is staggering, the impact dramatic – just like the move from black and white to colour TV. This is because of the increased picture resolution that HD broadcasts deliver and HD ready displays are able to receive. Pictures are broadcast in widescreen. Standard definition TV that you view through your aerial is broadcast in a format known as PAL, with a picture made up of around 576 horizontal lines. High Definition pictures are made up of 720 or 1,080 lines. You will also see a letter following this, either a āPā or āiā.