D1 (Sony)
SMPTE digital VTR video standard, also a Sony and Bosch - BTS product D-1 format was the first major professional digital video format, introduced in 1986 through efforts by SMPTE engineering committees. D-1 stored uncompressed digitized component video, encoded at Y'CbCr 4:2:2 using the CCIR 601 raster format, along with PCM audio tracks as well as timecode on a 19 mm (3/4") cassette tape. Uncompressed component video used enormous bandwidth for its time, and the composite D-2 system soon followed. The maximum record time on a D-1 tape is 94 minutes.
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