Posted by mady | Posted in Blu-ray Disc | Posted on 5:17 AM
Blu-Ray is a new optical storage technologies that fight as the successor of DVD. In this topic you will know everything you need to know about this technology.
With the introduction of high-definition TV (HDTV) DVD storage capacity showed to be insufficient to this application. DVD supports a resolution up to 720x480 pixels, while HDTV works with resolutions as high as 1920x1080 pixels. Just to give you an idea, two hours of high-definition video with data compression requires 22 GB of storage space. Keep in mind that the maximum capacity of a DVD is of 17 GB, if a DVD-18 disc is used (keep in mind that this is a dual-sided dual-layer disc).
In fact a Blu-Ray or a HD-DVD is a DVD disc with a higher storage capacity, allowing you to store high-definition contents. It is important to remark that the main motivation to the creation of a DVD successor was the introduction of HDTV, which requires a higher disc storage capacity, feature a regular DVD cannot provide. But how a Blu-Ray is able to store more data than a DVD disc.
Blu-Ray technology was developed in February 2002 to be DVD’s successor by a consortium made by companies that include Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson. HD-DVD, on the other hand, was created by Toshiba and recently got support from Microsoft, HP and Intel.
Both Blu-Ray and HD-DVD discs have the same physical size of DVD discs (and CDs), with a diameter of 12 cm (120 mm, around 4 ¾”).
With the introduction of high-definition TV (HDTV) DVD storage capacity showed to be insufficient to this application. DVD supports a resolution up to 720x480 pixels, while HDTV works with resolutions as high as 1920x1080 pixels. Just to give you an idea, two hours of high-definition video with data compression requires 22 GB of storage space. Keep in mind that the maximum capacity of a DVD is of 17 GB, if a DVD-18 disc is used (keep in mind that this is a dual-sided dual-layer disc).
In fact a Blu-Ray or a HD-DVD is a DVD disc with a higher storage capacity, allowing you to store high-definition contents. It is important to remark that the main motivation to the creation of a DVD successor was the introduction of HDTV, which requires a higher disc storage capacity, feature a regular DVD cannot provide. But how a Blu-Ray is able to store more data than a DVD disc.
Blu-Ray technology was developed in February 2002 to be DVD’s successor by a consortium made by companies that include Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson. HD-DVD, on the other hand, was created by Toshiba and recently got support from Microsoft, HP and Intel.
Both Blu-Ray and HD-DVD discs have the same physical size of DVD discs (and CDs), with a diameter of 12 cm (120 mm, around 4 ¾”).
In fact a Blu-Ray or a HD-DVD is a DVD disc with a higher storage capacity, allowing you to store high-definition contents.
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