HD DVD vs. Blu-ray Disc: A History
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Here's a timeline of the format battle between HD DVD and Blu-ray Disc.
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TOKYO/NEW YORK  - U.S. video rental chain  Blockbuster Inc.  has come out in favor of the Blu-ray  DVD format disc, tipping the balance against the rival HD DVD  in the battle over next-generation discs.
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HD DVD isn't dead, at least not quite. That leaves many options and potentially expensive mistakes for consumers.
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HD-DVD backers say their format is cheaper and easier to produce than rival Blu-ray.
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Blu-ray takes the lead in the battle of the high-definition DVD formats after Warner backs it.
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The HD DVD format has won a battle in its ongoing war with rival optical format Blu-ray with the announcement that Universal Pictures is backing the technology.
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The war between the two high-definition DVD formats entered a new phase on Monday, as Blockbuster announced that it will offer the Blu-ray format for rental in its 1,700 stores. The HD DVD format still will be offered through the company&#39;s online channel, blockbuster.com, as well as through the 250 stores that currently carry both formats.
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Universal said HD DVD can deliver enhanced picture and sound quality, greater storage capacity and increased interactivity. An additional benefit is backwards compatibility, allowing existing
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Backers of the Blu-ray high definition DVD system receive a twin boost in their format war with HD DVD.
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(InfoWorld) - It's an interesting contrast: consumers are fast ditching videotape for DVDs and hard disks, but the people who make TV shows are sticking to tape for some cutting edge applications. When it comes to recording broadcast-quality HDTV, today's optical disc systems just can't spin fast enough to keep up with the video -- but that may be about to change. Current optical disc systems are speed-capped at about 10,000 rpm (revolutions per minute.) Spin them any faster and there's a danger the discs will physically disintegrate in the drive leaving nothing but a pile of sharp plastic splinters and data that is gone forever. And even if they don't break apart the disc can begin to wobble making reliable recording a problem. Engineers at the Science and Technical Research Laboratories (STRL) of Japan's public broadcaster, NHK (Nippon Hoso Kyokai), are working on an optical disc recording system based on consumer Blu-ray Disc technology that can spin as fast as 15,000 rpm without these problems and demonstrated it last week. It's needed because broadcast quality HDTV signals of the type NHK records stream at 250MbpsÂ making a fast-spinning optical disc a necessity. A 1X Blu-ray Disc records at 36Mbps so the new system is equivalent to 7X speed. NHK has gotten around the stress problem by making a flexible disc that is just 0.1 millimeters thick. The disc, which was co-developed with Ricoh, is essentially the recording layer from a Blu-ray Disc without the 1.1 millimeter plastic substrate that is used to give the disc rigidity. It won't break apart at higher speeds but is not rigid enough to be useful in a drive at any speed. To solve this second problem a thick stabilizing plate has been added into the drive. When spun, the disc is kept steady by the stabilizer and can be used up to 15,000 rpm, said Daiichi Koide, an engineer at NHK STRL. The set-up is similar to Hitachi Maxell's Stacked Volumetric Optical Disc (SVOD) that wasÂ introduced in prototype formÂ at last year's Ceatec exhibition in Japan and shown again at Cebit in Germany this year. SVOD packs several 0.1 millimeter thick optical discs into a cartridge and holds them against a stabilizer in the drive to keep them steady while in use. However there is a key difference between the two, said Koide. In the NHK drive the stabilizer doesn't rotate. If it did it would be susceptible to the same stresses that as the discs. The result is that NHK can spin the disc up to 15,000 rpm without any mechanical problems. The system is still under development and there's no word on when it will literally be ready for prime time. NHK envisages cartridges stuffed with a number of the thin discs that can replace videotapes. Â
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Fears of a recession and poor DVD sales played into Warner Bros's decision to back Blu-ray Disc over HD DVD for a high definition DVD format.
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The end of the high-definition disc war seems in sight, say industry observers, with major studio Warner Bros. jumping to the Blu-ray Disc camp and leaving the competing HD DVD format with a dwindling base of Hollywood support. But ahead lies the real uphill battle: selling high-definition discs - in any format - to consumers who appear more than satisfied with the DVDs they've already bought over the past few years.
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Mix'n'match optical media Three inventors have filed a patent application for an optical disc capable of holding not only Blu-ray Disc data but also HD DVD-formatted information. In fact, the system would allow disc makers to mix and match any two optical disc formats.â¦
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Performance of both Blu-ray and HD DVD during this second holiday season is crucial in establishing the new generation of optical discs.
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A new specification will add features to Blu-ray disc players proves that people really just subscribe to consumer electronics rather than buying them. Accept that and you can defend profligate spending on the latest TV or being a penny-pincher.
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Several movie studios choose a side in the battle of DVD formats.
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Blu-ray Disc or HD DVD? Regardless of your choice, you have lots of high-definition player options this holiday season.