 In August, Toshiba and NEC announced their competing standard, Advanced Optical Disc.It was finally adopted by the DVD Forum and renamed HD DVD the next year, after being voted down twice by DVD Forum members who were also Blu-ray Disc Association members—a situation that drew preliminary investigations by the U.S. Department of Justice.HD DVD had a head start in the high-definition video market, as Blu-ray Disc sales were slow to gain market share.