In the same year, two new optical disc storage formats were being developed. Video CD (VCD) became one of the first formats for distributing digitally encoded films in this format, in 1993. ![]() Released in 1987, CD Video used analog video encoding on optical discs matching the established standard 120 mm (4.7 in) size of audio CDs. ![]() Kees Schouhamer Immink received a personal technical Emmy award for his contributions to DVD and Blu-ray disc. * Some CD-R(W) and DVD-R(W)/DVD+R(W) recorders operate in ZCLV, CAA or CAV modes, but most work in constant linear velocity (CLV) mode. History Development and launch Comparison of several forms of disk storage showing tracks (tracks not to scale) green denotes start and red denotes end. ![]() īecause DVDs became highly popular for the distribution of movies in the 2000s, the term DVD became popularly used in English as a noun to describe specifically a full-length movie released on the format for example the sentence to "watch a DVD" describes watching a movie on DVD. "Digital versatile disc" is the explanation provided in a DVD Forum Primer from 2000 and in the DVD Forum's mission statement, which the purpose is to promote broad acceptance of DVD products on technology, across entertainment, and other industries. Toshiba had been using the name 'digital video disc', but that was switched to 'digital versatile disc' after computer companies complained that it left out their applications." The Oxford English Dictionary comments that, "In 1995, rival manufacturers of the product initially named digital video disc agreed that, in order to emphasize the flexibility of the format for multimedia applications, the preferred abbreviation DVD would be understood to denote digital versatile disc." The OED also states that in 1995, "The companies said the official name of the format will simply be DVD. DVDs containing other types of information may be referred to as DVD data discs. Rewritable DVDs ( DVD-RW, DVD+RW, and DVD-RAM) can be recorded and erased many times.ĭVDs are used in DVD-Video consumer digital video format and less commonly in DVD-Audio consumer digital audio format, as well as for authoring DVD discs written in a special AVCHD format to hold high definition material (often in conjunction with AVCHD format camcorders). Blank recordable DVD discs ( DVD-R and DVD+R) can be recorded once using a DVD recorder and then function as a DVD-ROM. Such discs are a form of DVD-ROM because data can only be read and not written or erased. Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. Variants can store up to a maximum of 17.08 GB. A standard single-layer DVD can store up to 4.7 GB of data, a dual-layer DVD up to 8.5 GB. DVDs offer significantly higher storage capacity than compact discs (CD) while having the same dimensions. The medium can store any kind of digital data and has been widely used for video programs (watched using DVD players) or formerly for storing software and other computer files as well. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. High-Definition Versatile Multilayer Disc (HD VMD). ![]() HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM.Blu-ray Disc ( BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc, 4K Blu-ray ( Ultra HD Blu-ray).DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, DVD-Video, HVD, EcoDisc, MiniDVD.Compact disc ( CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD ( SACD), Photo CD, CD Video ( CDV), Video CD ( VCD), Super Video CD ( SVCD), CD+G, CD-Text, CD-ROM XA, CD-i, MIL-CD, Mini CD.DVD+RW, DVD-RAM (Fixed-track writable media).Up to four layers are possible in a standard form DVD.Ħ50 nm laser with a focused beam using more power than for reading, 10.5 Mbit/s (1×)ĭVD Forum's DVD Books and DVD+RW Alliance specifications DVD-ROM and DVD-R(W) use one encoding, DVD-RAM and DVD+R(W) uses anotherĤ.7 GB (single-sided, single-layer – common)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |