D-1 | Article about D-1 by The Free Dictionary
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D-1(Digital-1) A 3/4" (19mm) broadcast-quality component digital videotape format that records uncompressed frames in the ITU-R BT.601 standard. Developed by Sony and Bosch in the mid-1980s, D-1 was the first professional digital video format and was later standardized by SMPTE.
Using costly tape decks and metal-particle cassettes, D-1 records standard definition (SD) at 704x480 pixels. It takes 1MB of storage for each frame; however, because a small amount of compression takes place, 30 fps requires a transfer rate of only 27MB per second. See ITU-R BT.601, D-2 and SD formats.
References in periodicals archive
The lowered ratings on the class D-1
and class D-2 notes reflect the failure to pay interest on the full balance of the notes and the likelihood that the noteholders will not receive full principal on the notes.
Conventional mortgages, the majority of which are insured by primary mortgage insurance, were originated in 1980 and transferred to secure the D-1
bonds in 1991.
Vela's four-channel decoder decodes MPEG-1 and MPEG-2 system, program, transport and video-only streams at resolutions of MPEG-1 SIF, MPEG-2 Half D-1
, MPEG-2 D-1
(FOE) and MPEG-2 D-1