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HD DVD (High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data storage media and 405 nm wavelength blue laser. HD DVD is promoted by Toshiba, NEC, Sanyo, and (most recently[1]) Microsoft, and backed by four major film studios. This work is copyrighted. ...
This work is copyrighted. ...
High-definition television (HDTV) means broadcast of television signals with a higher resolution than traditional formats (NTSC, SECAM, PAL) allow. ...
// DVD is an optical disc storage media format that can be used for storing data, including movies with high video and sound quality. ...
Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
See also list of optical topics. ...
The terms storage and memory refer to the parts of a digital computer that retain physical state (data) for some interval of time, possibly even after electrical power to the computer is turned off. ...
TÅshiba (æ±èŠ) is a high technology electrical and electronics manufacturing firm, headquartered in Tokyo, Japan. ...
NEC Corporation is a multi-national information technologies company headquarterd in Minato-ku, Tokyo, Japan. ...
SANYO Electric Co. ...
Microsoft Corporation (NASDAQ: MSFT) is the worlds largest software company, with over 50,000 employees in various countries as of May 2004. ...
Overview
HD DVD has a single layer capacity of 15 GB and a dual-layer capacity of 30 GB. Toshiba has announced a triple-layer disc is in development, which would offer 45GB of storage. The surface layer of an HD DVD disc is 0.6 mm thick, the same as DVD but thicker than the Blu-ray Disc's 0.1 mm layer. The numerical aperture of the optical pick-up head is 0.65, compared with 0.6 for DVD. These factors mean that HD DVD media is less expensive to manufacture than Blu-ray Disc, as HD-DVD only requires modification of existing DVD disc production lines. This has been critical in making HD DVD the preferred choice of media companies. Existing DVD media is playable on HD DVD drives with only minor modification of the optical pickup. Blu-ray Disc players however, are expected to include backward compatibility with DVDs. The two formats employ nearly identical video compression techniques, including MPEG-2, Video Codec 1 (VC1, based on the Windows Media 9 format) and H.264/MPEG-4 AVC. This article is about the unit of measurement, for the computer hardware manufacturer see Gigabyte Technology. ...
// DVD is an optical disc storage media format that can be used for storing data, including movies with high video and sound quality. ...
Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
In microscopy, the numerical aperture, AN, of an objective is: where I is the index of refraction of the medium in which the lens is working (1. ...
Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
MPEG-2 (1994) is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group), and published as the ISO/IEC 13818 international standard. ...
VC-1 is the title of the SMPTE standardization effort of a video codec based on Microsoft Windows Media Video version 9. ...
H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ...
History On November 19, 2003, the DVD Forum decided with eight to six votes, that the HD DVD will be the HDTV successor of the DVD. At this meeting they renamed it to HD DVD, while it had been previously called the "Advanced Optical Disc". Blu-ray Disc was never submitted to the DVD Forum for consideration. November 19 is the 323rd day of the year (324th in leap years) in the Gregorian Calendar. ...
2003 is a common year starting on Wednesday of the Gregorian calendar. ...
The DVD Forum is an international organization composed primarily of hardware and software companies that use and develop the DVD format. ...
High-definition television (HDTV) means broadcast of television signals with a higher resolution than traditional formats (NTSC, SECAM, PAL) allow. ...
Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
The DVD Forum is an international organization composed primarily of hardware and software companies that use and develop the DVD format. ...
The current specification version for HD DVD-ROM and HD DVD-Rewritable is version 1.0. The specification for HD DVD-R is currently at 0.9. The first HD DVD-ROM drives were expected to be unveiled by Q4 2004, with mass production to start in Q1 2005. This article needs to be wikified. ...
2004 is a leap year starting on Thursday of the Gregorian calendar. ...
2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ...
In April 2005, Apple Computer updated its version of DVD Studio Pro to support authoring HD content. DVD Studio Pro allows for the burning of HD DVD content to both DVD and HD DVD media (even though no burners are available). April is the fourth month of the year in the Gregorian Calendar and one of four with the length of 30 days. ...
2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ...
Apple Computer, Inc. ...
Apples DVD Studio Pro allow users to create DVD Masters to send out to production houses. ...
Microsoft's Xbox 360 may support the HD-DVD. This is because of a partnership between Microsoft and Toshiba. Considering that such a decision would postpone the launching date of the Xbox 360, Microsoft will equip the initial models with classic DVD drives, and may incorporate the new HD-DVD drives after the new technology is ready for mass production.
Microsoft Chairman Bill Gates also said that the Microsoft-Toshiba alliance is not a unilateral partnership and that many of the equipments manufactured by the Japanese company, such as the Tablet PCs, will be based on Microsoft Windows Vista, Microsoft’s future operating system.
Supporting film studios The New Line Cinema Production logo. ...
The Paramount Pictures logo used from 1987 to 1995. ...
Universal Studios logo This article is about the Universal Studios movie studio and Universal Hollywood Amusement park. ...
Warner Bros. ...
See also Blu-ray discs The Blu-ray Disc (also BD-ROM, BD) is a next-generation optical disc format meant for storage of high-definition video and high-density data. ...
The Enhanced Versatile Disc (EVD) was announced on November 18, 2003 by Chinas Xinhua news agency as a response to the popular DVD Video format and its high licensing costs. ...
Versatile Multilayer Disc is a high-capacity optical disc technology designed for high-definition television by New Media Enterprises Inc. ...
Digital Multilayer Disk, abbreviated as DMD, is the optical data storage disc successor being developed by D Data Inc. ...
HVD disc Holographic Versatile Disc structure 1. ...
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