NEW YORK — High-definition television uses a wider screen and far more picture detail than conventional TV to try to duplicate the experience of watching a theatrical film.
The screen, which is one-third wider than a conventional set's, better conveys the action in sports events and the drama in movies. That shape, or aspect ratio, also more closely duplicates the human visual field, TV engineers say.
The difference between conventional and high-definition pictures has been described as similar to the difference between a picture in a newspaper and one appearing in a slick-paper news magazine.
The Japanese Muse system, currently the most fully developed technology, produces a picture of 1,125 scanning lines and 60 frames per second; conventional pictures break down to 525 lines and 60 frames per second. A Muse screen consists of 1.5 million pixels, or dot-like picture elements, compared to about 213,000 pixels for conventional television pictures.