HD DVD May 2008, both companies announced they would stop manufacturing dual-compatibility drives. A few computer manufacturers (such as HP and Acer) sold computers with combination HD DVD/Blu-ray Disc drives. LG marketed a Blu-ray writer that also read HD DVD discs (but could not write to them). HD DVD competed primarily with Blu-ray Disc. Both formats were designed as successors to DVD, capable of higher quality video and audio playback, and of greater capacity when used to store video, audio, and computer data. Blu-ray Disc and HD DVD share most of the same methods of encoding media onto discs with each other,
Picture disc picture disc is "To Elvis: Love Still Burning", a collection of 11 Elvis Presley tribute songs by various artists, issued in May 1978. Both sides of the album (Fotoplay FSP-1001) picture Presley. On some picture discs, the images used were meant to create an optical illusion while the record was rotating on the turntable (as in the B side of Curved Air's "Airconditioning"), while others used the visual effect to add to the music — for example, the 1979 picture disc of Fischer-Z's "The Worker" featured a train which endlessly commuted around the turntable, reinforcing the song's message. Later picture