IVC 2-inch Helical scan was a high-end, broadcast quality helical scan analog recording format developed by the International Video Corporation (IVC) and introduced in 1975. Prior to this, IVC had produced several 1-inch (25 mm) helical scan video tape recorders (VTRs).
IVC 2-inch Helical scan was a high-end, broadcast quality helical scan analog recording format developed by the International Video Corporation (IVC) and introduced in 1975. Prior to this, IVC had produced several 1-inch (25 mm) helical scan video tape recorders (VTRs).
Source: Wikipedia "IVC videotape format" · CC BY-SA 4.0
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