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MiniDisc
MiniDiscLogo.svg
TDK MiniDisc and AA-battery 200703.jpg
MiniDisc by TDK, with AA-battery to compare size (height of AA-battery approx. 50 mm)
Media typeMagneto-optical disc
EncodingATRAC, linear PCM (with Hi-MD)
Capacity80 min (standard MiniDisc), up to 45 hours of audio (1 GB capacity) (with Hi-MD)
Read mechanism780 nm semiconductor laser diode
Write mechanismMagnetic field modulation
Developed bySony
UsageAudio storage, Data storage (with Hi-MD)
ReleasedSeptember 1992