Thursday, 29 October 2009
What Is HD Dvd?
HD DVD stands for High Definition Digital Versatile Disc. It is a thin circular disk and looks almost exactly like a CD or DVD. It is actually very similar to CDs and DVDs in all aspects except one. The difference is that HD-DVD a lot more information than the CD can hold / DVDs from the past. The way they packed more information in the same room does come from the color of the laser used to read the disc. HD-DVDs are read by a blue-violet laser instead of the traditional red bar. The blue-purple color has a shorter wavelength, making it able to focus on a smaller area more precisely. That way you can just stuff all of the information closer together on the same size disc. How much more? An HD-DVD contains about 3 times more information than a DVD. This extra space can fit HD-quality movies and sound. In particular, a 720p/1080i resolution 480i vs a picture on a DVD movie. A disk can contain any other type of information in addition to movies, but video is the most popular use for a DVD world. This is why many companies compete for HD home theater DVD players release. Paramount Pictures, Warner Bros. and Universal Studios have been lists of titles that will be available on HD DVD. Toshiba has already announced that it will produce two players. HD DVD is in direct competition with Blu-Ray, a similar technology that is not compatible implements. Blu-ray developed by Sony and is supported by the Blu-Ray Association including Apple, Hitachi, Dell, HP, LG, JVC, Panasonic, Mitsubishi, Pioneer, Philips, Samsung, Sharp, TDK, Sony and Thomson. Both technologies have similar launch dates and offer similar functions. HD-DVD players will use a new type called HDMI cable for the transmission of digital picture and sound. This cable has multiple wires for both video and audio quality that ensures the clearest. Using a wire for both video and audio creates less organized than the previous technology. Players will also have s-video and component connections to offer a wide range of possibilities.
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