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. The DWDD technology uses a physics phenomenon called domain wall displacement, which shortens the masks but does not need to change the laser beam.
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. The DWDD technology uses a physics phenomenon called domain wall displacement, which shortens the masks but does not need to change the laser beam.
Source: Wikipedia "DWDD" · CC BY-SA 4.0
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