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DigitalVideoAndHDTVAlgorithmsAndInterfaces.pdf

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Notation Method Tape<br />

Data rate,<br />

Mb/s Notes<br />

D-6 Component 4:2:2 HDTV 19 mm 1188<br />

D-5 HD<br />

Component compressed, 1 ⁄2 inch 270 (Panasonic)<br />

(HD-D5) 4:2:2 HDTV<br />

(VHS-derived)<br />

D-11<br />

Component compressed, 1 ⁄2 inch (Beta- 135 (Sony)<br />

(HDCAM) M-JPEG-like, 1440×1080,<br />

3:1:1 HDTV<br />

derived, MP)<br />

D-12<br />

Component compressed, 6.35 mm 100 DV100<br />

(DVCPRO HD) DV100, 1280×1080 (or<br />

960×720), 4:2:2 HDTV<br />

DV HD Component compressed, 6.35 mm 50 DV50 (not deployed/<br />

DV50, 1008×1024,<br />

3:1:1 HDTV<br />

obsolescent)<br />

Table 35.3 Digital videotape formats for HDTV The D-6 format is “uncompressed” (although<br />

subject to chroma subsampling); all of the other formats (below the line) use compression. The<br />

shaded row describes a consumer format that is standardized but unlikely to be deployed.<br />

HDTV videotape formats<br />

Table 35.3 summarizes HDTV digital videotape formats.<br />

D-6 SMPTE D-6 defines a videotape format that records<br />

uncompressed, 8-bit, 4:2:2 HDTV, at a bit rate of<br />

1.188 Gb/s. This equipment has superb performance,<br />

and is very expensive.<br />

D-5 HD (HD-D5) The SMPTE D-5 standard, mentioned earlier, records<br />

uncompressed SDTV video at 270 Mb/s. Panasonic<br />

adapted the D-5 format to HDTV by equipping it with<br />

a motion-JPEG codec having a compression ratio of<br />

about 5:1. This variant of the D-5 VTR is denoted<br />

D-5 HD or (in SMPTE standards) HD-D5.<br />

D-11 (HDCAM) What is now the D-11 format was introduced by Sony<br />

as HDCAM. Interlaced or progressive HDTV video with<br />

1440×1080 image format and 3:1:1 chroma subsampling<br />

is subject to M-JPEG-style compression comparable<br />

to that of DV, coded at about 135 Mb/s. D-11<br />

equipment accepts and delivers 1080i or 1080p video<br />

at any of several different frame rates; see page 471.<br />

This format uses a tape cassette derived from Betacam,<br />

with 1 ⁄ 2-inch tape.<br />

426 DIGITAL VIDEO AND HDTV ALGORITHMS AND INTERFACES

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