Digital+Surveillance+AB+Paper

Digital video was first introduced in 1983 with the Sony D-1 format, which recorded an uncompressed standard definition component video signal in digital form instead of the high-band analog forms that had been commonplace until then. D-1 was used mostly by large television networks. It would eventually be replaced by cheaper systems, most particularly Sony's Digital Betacam, still heavily used as a field recording format by skilled television producers. Consumer digital video first appeared in the form of QuickTime, which appeared in crude form around 1990.