Knowra DVD DVD DVD is an optical disc format that stores digital data in tracks read by a laser. Its higher data density gives it greater capacity than a Compact Disc.
DVD-ROM : A read-only DVD format used to distribute software, films, and other digital content. It uses DVD’s optical storage for data that users can read but not rewrite.
Compact Disc : An optical disc format that stores digital audio or data at lower density than DVD. DVD increased capacity through smaller features and tighter track spacing than this predecessor.
DVD-Video : A DVD format for distributing video with menus, audio tracks, subtitles, and navigation. It made DVD a standardized medium for feature films and other video programs.
Toshiba : A Japanese electronics and technology company that helped develop the DVD format. Toshiba led one of the competing high-density disc proposals that shaped DVD.
Home video : The production, distribution, and viewing of video for private use outside cinemas. DVD made digital films convenient to own, navigate, and replay at home.
DVD-R : A recordable DVD format that can be written once and read repeatedly. Its recording layer lets compatible drives burn data onto a blank disc.
Laser : A device that emits a narrow, coherent beam of light. DVD drives use a shorter-wavelength laser than CD drives to read finer data features.
DVD-Audio : A DVD format designed for high-quality multichannel digital audio. It used DVD capacity for high-resolution music beyond ordinary CD audio.
Sony : A Japanese electronics and entertainment company involved in developing optical media. Sony’s work with Philips contributed technology and proposals during DVD’s formation.
DVD region code : A coding system that restricts playback of some DVD-Video discs to designated geographic regions. Regional coding let distributors control where DVD releases could be played.
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