Short for Advanced Optical Disc, Blu-ray’s competing HD-DVD technology format. AOD and Blu-ray are similar in that they both use 405nm-wavelength blue-violet laser technology, in contrast to the 650nm-wavelength red laser technology used in traditional DVD formats. However, while Blu-ray has a storage capacity of 27GBon a single-layer disc, AOD has a storage capacity of 20GB on a single-layer disc.
AOD was developed jointly by Toshiba and NEC.
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