DWDD

{{Short description|Media reproducing technology}}

{{About|a computer media technology|a Dutch television programme|De Wereld Draait Door|the radio station in the Philippines|DWDD-AM}}

{{Refimprove|date=September 2014}}

The DWDD (Domain Wall Displacement Detection) is a media reproducing technology developed by Canon and Sony and first implemented in a commercial product in 2004 as part of Sony's Hi-MD format.{{cite web |url=http://www.minidisc.org/hi-md_faq.html#_q89 |title = Minidisc FAQ: Hi-MD Topics}} The DWDD technology uses a physics phenomenon called domain wall displacement, which shortens the masks but does not need to change the laser beam. With such technology, the density of the magneto-optical disc could be increased dramatically.