High-definition optical disc format war that involved compressing HD content onto dual-layer DVD-9 discs. In spite of this decision, the DVD Forum's Steering Committee announced in April 2002 that it was pursuing its own blue-laser high-definition solution. In August, Toshiba and NEC announced their competing standard Advanced Optical Disc, which was finally adopted by the DVD Forum and renamed "HD DVD" the following year after being voted down twice by Blu-ray Disc Association members, prompting the U.S. Department of Justice to make preliminary investigations. Three new members had to be invited and the voting rules changed before the initiative finally passed. The competing standards had
Nintendo optical discs Optical Disc" (RVL-006) is the physical game medium for the Wii, created by Panasonic. Nintendo extended their proprietary technology to use a full size 12 cm, 4.7/8.54 GB DVD-based disc, enabling it to have the benefits of the GameCube Game Disc, while having the standard capacity of a double-layer DVD-ROM. Although the Wii can use double-layer discs, all titles were single-layer prior to the release of "Super Smash Bros. Brawl". With the release of "Super Smash Bros. Brawl", Nintendo admitted that some Wii systems may have trouble reading dual-layer discs due to a dirty laser lens. Nintendo repaired systems with