4. Digital-S format
The analog S-VHS format was a big hit with the general public, but also with professionals, especially on the North American market. It was tempting for Japanese manufacturer JVC to take the mechanics of this format and add digital electronics. This explains the birth of the Digital-S format, which nevertheless competes with Panasonic's DVCPRO formats, even though both companies belong to the same Matsushita group.
Digital-S is covered by the SMPTE 316M standard and is known as D-9.
4.1 Recorded signals
In the case of video, these are 4:2:2 signals with 8 binary characters, to which an intra-frame bit-rate reduction is applied using the TCD algorithm. The starting bitrate of 166 Mbits/s is thus reduced to 50 Mbits/s, giving a low...
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Digital-S format
Betacam SX format
Bibliography
In Engineering Techniques
Standards
- Information Technology – Digital compression and coding of photographic still images: JPEG profile registration, SPIFF profiles, SPIFF tags, SPIFF color spaces, APPn tags, SPIFF compression types and registration authorities (REGAUT) - ISO/CEI 10918-4 - 08-99
- Information Technology – Coding of moving images and associated sound for digital storage media up to approx. 1.5 Mbit/s - ISO/CEI 11172 - 1993
- Information...
Organizations
Joint Photographic Experts Group (JPEG) http://www.jpeg.org
Moving Picture Experts Group (MPEG) http://www.chiariglione.org/mpeg
Manufacturers
(non-exhaustive list)
Panasonic http://www.panasonic-broadcast.com
Sony http://www.sony.net
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