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History of DVDIn the early 1990s two high density optical storage standards were being developed: one was the MultiMedia Compact Disc (MMCD), backed by Philips and Sony, and the other was the Super Density Disc (SD), supported by Toshiba, Time-Warner, Matsushita Electric, Hitachi, Mitsubishi Electric, Pioneer, Thomson, and JVC. IBM's president, Lou Gerstner, acting as a matchmaker, led an effort to unite the two camps behind a single standard, anticipating a repeat of the costly format war between VHS and Betamax in the 1980s. Philips and Sony abandoned their MMCD format and agreed upon Toshiba's SD format with two modifications that are both related to the servo tracking technology. The first one was the adoption of a pit geometry that allows "push-pull" tracking, a proprietary Philips/Sony technology. The second modification was the adoption of Philips' EFMPlus. EFMPlus, created by Kees Immink, who also designed EFM, is 6% less efficient than Toshiba's SD code, which resulted in a capacity of 4.7 Gbyte instead of SD's original 5 Gbyte. The great advantage of EFMPlus is its great resilience against disc damage such as scratches and fingerprints. The result was the DVD specification Version 1.0, announced in 1995 and finalized in September 1996. First DVD players According to the Digital Entertainment Group (DEG), all DVD sales and rentals (films, television series, special interests, etc) totaled $21.2 billion in 2004. The sales portion of that was $15.5 billion. In 2000, Sony released its PlayStation 2 console in Japan. In addition to playing video games developed for the system it was also able to play DVD movies. This proved to be a huge selling point because the PS2 cost about the same as DVD player but it could do a whole lot more. As a result, many electronic stores that normally did not carry video game consoles carried PS2s and the newer PlayStation 3. Following on with this tradition Sony has decided to implement one of DVD's possible successors, Blu-ray, into its PlayStation 3 console. Microsoft's Xbox, released a year after the PlayStation 2, also had the capability to play DVD discs with an add-on kit, cementing the DVD's place in video game consoles. Until 2003 consumers would have to choose a preferred DVD format and purchase the DVD media that was compatible with the specific DVD burner. In 2003 Sony introduced a multi-format DVD burner (also called a combo drive or DVD-Multi) and today many manufacturers offer multi-format DVD burners which are compatible with multiple DVD formats. "DVD" was originally an initialism for "Digital Video Disc". Some members of the DVD Forum believe that it should stand for "Digital Versatile Disc" to reflect its widespread use for non-video applications. Toshiba, which maintains the official DVD Forum site, adheres to the interpretation of "Digital Versatile Disc". The DVD Forum never reached a consensus on the matter, however, and so today the official name of the format is simply "DVD"; the letters do not officially stand for anything. Back to CD & DVD |
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