How does high-definition compare to standard definition television systems?
An HD signal can contain up to around five times the picture information compared to standard definition (SD). Standard definition pictures are made up of approximately 500-600 horizontal lines of pixels depending on the local transmission system used, whereas high-definition transmissions use at least 700 to around 1000 lines as illustrated below. Common Picture Resolutions High definition broadcasts also include better native support for multi-channel sound and windscreen formats which can improve the experience of sport and movies.
