Forget 3D. Your dream TV should be 4K

This undated image provided by Sony shows an ultra-HD ‘4K’ TV set. High-definition TVs roughly quadrupled the resolution of the sets that came before them. Now, the industry is poised to do it again as Sony says its U.S. stores will, by December, sell a TV set with four tims the resolution of today's best HDTVs. (AP Photo/Sony)A truckload of new TVs, with screen resolutions four times greater than so-called full HD screens, are being unveiled at this week's IFA technology show in Berlin.