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Comparison of various optical storage media. This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in 2006, attempted to improve upon and eventually replace the DVD standard.
DVD-Video is a standard for distributing video/audio content on DVD media. The format went on sale in Japan on November 1, 1996, [4] in the United States on March 24, 1997, to line up with the 69th Academy Awards that day; [6] in Canada, Central America, and Indonesia later in 1997; and in Europe, [8] Australia, and Africa in 1998.
Freeplay (French: jeu libre) is a literary concept from Jacques Derrida's 1966 essay, "Structure, Sign, and Play in the Discourse of the Human Sciences". In his essay, Derrida speaks of a philosophical "event" that has occurred to the historic foundation of structure. Before the "event", man was the center of all things.
The project was the brainchild of Josh Hogan, who represented HP and was involved in the negotiations that resulted in the compromise format for DVD-ROM (prerecorded media) between the DVD Forum and the Sony & Philips teams. HP chose to partner with Sony and Philips, who were initially lukewarm to a fully rewritable format.
As of 2021, multiple consumer-oriented, optical-disk media formats are or were available: Compact Disc ("CD"): digital audio disc CD-R: write once read many (WORM) CD; CD-RW: rewriteable CD; DVD: digital video disc DVD-R: WORM DVD defined by the DVD Forum; DVD-RW: rewritable DVD defined by DVD Forum; DVD+R: WORM DVD defined by the DVD+RW Alliance
It is a hybrid of Philips and Sony's MM-CD (Multi-Media Compact Disc) format and Toshiba's SD (Super Density) format. The last-minute adoption of the hybrid DVD format was agreed to by all three companies in an effort to avoid a damaging format war, similar to that between Beta and VHS in the 1970s and 1980s.
Modern compact discs support a writing speed of 52× and higher, with some modern DVDs supporting speeds of up to 24×. [4] Writing a DVD at 1× (1 385 000 bytes per second) [5] is approximately 9 times faster than writing a CD at 1× (153 600 bytes per second). [6] However, the actual speeds depend on the type of data being written to the disc ...
Universal Media Disc (UMD) Enhanced Versatile Disc (EVD) Forward Versatile Disc (FVD) Holographic Versatile Disc (HVD) China Blue High-definition Disc (CBHD) HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM; High-Definition Versatile Multilayer Disc (HD VMD) VCDHD; GD-ROM; Personal Video Disc (PVD) MiniDisc : MD Data, MD Data2; Hi-MD; LaserDisc : LD-ROM ...