Beyond1/spl mu/m/sup 2/ high density recording with improved QAM technique
1991
A new QAM (Quadrature Amplitude Modulation) recording technique developed for digital VCRS is reported here. By using an improved coded 16-QAM method, a recording density as high as 0.95 /spl mu/m/sup 2/ /bit is accomplished on a conventional ME (Metal Evaporated) tape.
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