NEC's new HD-DVD drive which we think is meant for computers, will support regular and rewritable DVD and CD media.
“To produce the drive, engineers had to overcome several hurdles, says Toshiaki Iwanaga, principal researcher at NEC’s optical recording technology center.
One of these hurdles is related to the optical head, which sits just above the disc and is one of the most crucial components in the device. Each of the three disc formats uses a laser that produces light of a different wavelength so the head must be compatible with all three types: 780 nanometer (nm) light used in CDs, 650 nm used in DVDs, and 405 nm used in HD-DVD.”
Read more at PC World
