High Definition television means broadcast of television signals with a higher resolution than traditional formats allow. It's a step change in television technology which provides far clearer an [..]

An improved television system which provides approximately twice the vertical and horizontal resolution of existing television standards. It also provides audio quality approaching that of compact dis [..]

Various technical systems providing a finer and wider TV picture and usually twice as many scanning lines as standard TV. According to the Television Advertising Bureau, it provides the highest quality picture and sound simultaneously with a substantial data delivery service.

(also referred to as HDTV): Improved television system that provides approximately twice the vertical and horizontal video resolution of existing standards and audio quality approaching that of compac [..]