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2. Comparison of high-definition optical disc formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_high...

   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.

3. High-definition optical disc format war - Wikipedia

   en.wikipedia.org/wiki/High-definition_optical...

   The Blu-ray/HD DVD conflict resembled the earlier videotape format war between VHS and Betamax, partly because of Sony's strong involvement in both episodes. These format wars have often proved destructive to both camps because consumers, afraid of committing to a losing standard, would refrain from purchasing either. [3]

4. Comparison of popular optical data-storage systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_popular...

   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 switch from red to blue-violet laser and tighter engineering tolerances. As of 2007 both have significant releases in the ...

5. Optical storage media writing and reading speed - Wikipedia

   en.wikipedia.org/wiki/Optical_storage_media...

   For Blu-ray discs, 1× speed is defined as 36 megabits per second (Mbit/s), which is equal to 4.5 megabytes per second (MB/s). [7] However, as the minimum required data transfer rate for Blu-ray movie discs is 54 Mbit/s, the minimum speed for a Blu-ray drive intended for commercial movie playback should be 2×. The fastest Blu-ray speed is 16×.

6. Blu-ray - Wikipedia

   en.wikipedia.org/wiki/Blu-Ray

   Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-definition video (HDTV 720p and 1080p).

7. HD DVD - Wikipedia

   en.wikipedia.org/wiki/HD_DVD

   10 HD DVD / Blu-ray Disc comparison. 11 Development. 12 Variants and media. Toggle Variants and media subsection. 12.1 HD DVD-R / -RW / -RAM. 12.2 DVD / HD DVD hybrid ...