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Blu-Ray Player FAQ
Will a Blu-ray player work on my standard TV?
Yes, Blu-ray players will function on a traditional (tube) television. However, to enjoy the full capability of Blu-ray technology a high definition television is required.
What’s the difference between DVD and Blu-ray?
DVD and Blu-ray discs look virtually the same, yet there are some differences between player options and their associated technology. The technology associated with Blu-ray players and discs is superior and is therefore generally accompanied by a higher cost. Blu-ray discs offer high definition resolution while DVDs do not.
Here are some additional basic differences between DVD and Blu-ray technologies:
- The relative storage capacity of the devices is an important factor. DVD and Blu-ray storage capacity is measured in gigabytes (GB); the higher the number of gigabytes, the more a device can store in memory. Single-layer DVDs hold about 4.7 GB, while double-layer DVDs can hold about 8.7 GB. The single layer format maintains around two hours of a video, while the double-layer holds twice that. Single-layer Blu-ray discs maintain 25 GB of data (around two hours of high-definition information or thirteen hours of standard definition info). Double-layered Blu-ray discs maintain 50 GB (four and a half hours of high-definition info and twenty-six hours of standard).
- Image resolution refers to the number of vertical lines times the number of horizontal lines encompassing the picture. A single number is displayed by manufacturers (indicating the number of horizontal lines) referring to image resolution. A picture is more clear and detailed as the image resolution increases. DVDs have a standard image resolution of 480 or an increased resolution of 520. Blu-ray technology was designed to display a resolution of 1080.
- Laser technology is implemented in both DVD and Blu-ray players to read the information on a disc. Lasers read the information and project the associated picture and sound through your television. DVD players use a red laser at a 650nm wave length. Blu-ray players use a blue laser. Blue laser wavelengths are shorter (405nm) and smaller in diameter, resulting in a superior reading of the information stored on a disc.
Will a Blu-ray player play my old DVDs?
Yes, Blu-ray players play standard DVDs in addition to Blu-ray discs. However, DVDs will not be displayed in the high definition offered by Blu-ray technology. Blu-ray discs cannot be played by standard DVD players.