subject: The History of DVD [print this page] In 1993, two optical disc formats for the storage are developed. One of the MultiMedia Compact Disc (MMCD), was also called CDi, backed by Philips and Sony, and the other is the Super Density (SD) was the disc that Toshiba, Time Warner, Matsushita Electric, Hitachi, Mitsubishi Electric, Pioneer, Thomson supported and JVC.
Representatives of the SD camp approached IBM, asking for advice on the file system to use for your records and ask for support for its data storage format. Alan E. Bell, a researcher at IBM Almaden Research Center has requested and received the teachings of the MMCD development project. Out of fear, in a repeat of the war between VHS and Betamax video formats expensive discovered in the 1980s brought a group of computer industry experts, including representatives from Apple, Microsoft, Sun, Dell and many others. This group is called the Technical Working Group or TWG. As SK Group (Steven Kinnersley) the original creator of the DVD with two faces.
The TWG voted to boycott both formats if the two camps on a single standard line of convergence [5]. Lou Gerstner, chairman of IBM, was recruited to lobby the leaders of the warring parties. Over time, computer companies won the day, and a uniform format, now on DVD, was agreed. The TWG also in cooperation with the Optical Storage Technology Association (OSTA), with the help of the implementation of the file system ISO-13346 (also known as Universal Disk Format [] UDF) for use in the new DVD.
Philips and Sony decided that to avoid in their interest to another format war on their multimedia CD, and have agreed that the company merge with Super Density Disc support introduction of a unique format with two technologies. The specification was essentially similar to Toshiba and Matsushita Super Density Disc, with the exception of the double-layer option (MMCD has on one side and optional Dual-Layer SD was modulation during a single layer, but eventually both sides) and EFMplus.
EFMplus was chosen because of its high resistance to the hard drive, such as scratches and fingerprints damage. By Kees Immink EFMplus (which is also produced EFM) designed to be used 6% less efficient than the modulation technique originally developed by Toshiba, which led to a capacity of 4.7 GB, in contrast to the original 5 GB.
The result was the DVD specification, designed for the player of DVD movies and DVD-ROM on a computer in December 1995.
DVD-Video format was introduced by Toshiba in Japan in November 1996, the United States in March 1997 (market testing), [6] in Europe in October 1998 and Australia in February 1999.
Some of the specifications (DVD-Video for example) are not publicly available and only available from DVD Format / Logo Licensing Corporation at a price of $ 5,000. [12] [13] Each participant must sign an agreement not to disclose certain information in the book of books proprietary and confidential information
