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公告 |
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Consumer restrictions
junshan0202 发表于 2012/8/2 11:09:00 |
DVD recordable discs supporting this technology are backward-compatible with some existing DVD players and DVD-ROM drives. Many current support dual-layer technology, and the price is now comparable to that of single-layer drives, although the blank media remain more expensive. The recording speeds reached by dual-layer media are still well below those of single-layer media. A potential reason is how Dual Layer discs are not as well matured compared to the Single Layer discs, as well as consumers,Moncler shop on a whole, have no desire for increased burning speeds.There are two modes for dual-layer orientation. With Parallel Track Path (PTP), used on DVD-ROM, both layers start at the inside diameter (ID) and end at the outside diameter (OD) with the lead-out. With (OTP), used on many Digital Video Discs, the lower layer starts at the ID and the upper layer starts at the OD, where the other layer ends; they share one and one lead-out.
DVD-Video is a standard for storing and distributing video/audio content on DVD media. The format went on sale in Japan in 1996, in the United States in 1997, in Europe in 1998 and in Australia in 1999. DVD-Video became the dominant form of home video distribution in Japan when it first went on sale in 1996, but did not become the dominant form of home video distribution in the United States until June 15, 2003, when weekly DVD-Video in the United States rentals began outnumbering weekly VHS cassette rentals, reflecting the rapid adoption rate of the technology in the U.S. marketplace. Currently, DVD-Video is the dominant form of home video distribution worldwide, although in Japan it was surpassed by when Blu-ray first went on sale in Japan on March 31, 2006.The Content Scramble System (CSS) is a (DRM) and system employed on almost all commercially produced DVD-video discs. CSS utilizes a algorithm. The system was introduced around 1996 and was first compromised in 1999.The purpose of CSS is twofold:While most CSS-decrypting software is used to play DVD videos, other pieces of software (such as , , , , and ) can copy a DVD to a hard drive and remove , CSS encryption, and .The rise of and "Moncler Coats" has prompted many copyright holders to display notices on DVD packaging or displayed on screen when the content is played that warn consumers of the illegality of certain uses of the DVD. It is commonplace to include a 90 second advert warning that most forms of copying the contents are illegal. Many DVDs prevent skipping past or fast-forwarding through this warning.Arrangements for renting and lending differ by geography. In the U.S., the right to re-sell, rent, or lend out bought DVDs is protected by the under the . In Europe, rental and lending rights are more limited, under a 1992 European Directive that gives copyright holders broader powers to restrict the commercial renting and public lending of DVD copies of their work. |
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