High-definition TVs roughly quadrupled the resolution of the sets that came before them. Now, the industry is poised to do it again. Sony says by December, U.S. stores will sell a TV set with four times the resolution of today's best HDTVs. The set will measure 84 inches on the diagonal, making the screen area four times as large as the common 42-inch set.
Sony executives did not reveal the price of the set Wednesday.
