HIGH-DEFINITION TVs roughly quadrupled the resolution of the sets that came before them. Now, the industry is poised to do it again. By December, U.S. stores will sell a TV set with four times the resolution of today's best HDTVs, Sony Corp. said Wednesday.

The set will measure 84 inches on the diagonal, making the screen area four times as large as the common 42-inch set. Its price will be revealed next week.

There is, for now, very little video content available that can take advantage of the higher resolution.

- Associated Press