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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.
As of 2007 DVD is the de facto standard for pre-recorded movies, and popular storage of data beyond the capacity of CD. With the development of high-definition television , and the popularization of broadband and digital storage of movies, a further format development took place, again giving rise to two camps: HD DVD and Blu-ray , based upon a ...
UDO optical disc storage media was developed as a replacement for the 9.1 GB Magneto-optical digital storage medium. The Ultra Density Optical was first announced by Sony on November 1, 2000. [ 2 ] It was later adopted with heavy investment by Plasmon, a UK technology company with extensive experience with computer archival backup systems and ...
Optical storage refers to a class of data storage systems that use light to read or write data to an underlying optical media. Although a number of optical formats have been used over time, the most common examples are optical disks like the compact disc (CD) and DVD.
Blu-ray Disc and HD DVD uses blue-violet lasers and focusing optics of greater aperture, for use with discs with smaller pits and lands, thereby greater data storage capacity per layer. [22] In practice, the effective multimedia presentation capacity is improved with enhanced video data compression codecs such as H.264/MPEG-4 AVC and VC-1 .
Single-layer HD DVD and Blu-ray disks offer densities around 7.5 Gbit/in 2 and 12.5 Gbit/in 2, respectively. When introduced in 1982 CDs had considerably higher densities than hard disk drives, but hard disk drives have since advanced much more quickly and eclipsed optical media in both areal density and capacity per device.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... Optical storage media writing and reading speed;
With 140 MB disks, MD Data offered about 100 times as much storage capacity as ordinary diskettes, and more than its competitors like the Zip (100 MB), SuperDisk (120 MB), and EZ 135 (135 MB), in a physically smaller medium. The format was featured in products such as still cameras, a PDA, document scanners, and image storage and editing systems.