Title :
Development of a small-size light-weight SNG transmission system via satellites using the digital bit-reduction technology
Author :
Ito, Shin-etsu ; Okamura, Hiroshi
Author_Institution :
NHK, Tokyo, Japan
fDate :
6/1/1992 12:00:00 AM
Abstract :
A description is given of a small-size, light-weight SNG (satellite news gathering) transmission system developed at NHK (Japan Broadcasting Corporation) using digital video-audio bit-reduction technology, which can be used to transmit news from remote gathering spots to the main station (broadcasting station) immediately. The input to the equipment is the component video signal of 4:2:2 conforming to CCIR Rec. 601-1. The composite NTSC signal also may be input. The component video signal is bit-reduced to 7 Mb/s, 11 Mb/s, and 18 Mb/s, respectively, before transmission. The bit-reduction technology used in the system is the adaptive DCT (discrete cosine transformation) using a block-matched motion vector. The system´s usefulness has been verified by transmission experiments via satellites
Keywords :
data compression; electronic news gathering; picture processing; satellite relay systems; television broadcasting; video signals; 11 Mbit/s; 18 Mbit/s; 7 Mbit/s; CCIR Rec. 601-1; Japan Broadcasting Corporation; NHK; SNG transmission system; adaptive DCT; block-matched motion vector; broadcasting station; component video signal; composite NTSC signal; digital audio signals; digital bit-reduction; digital video signals; discrete cosine transformation; satellite news gathering; satellites; transmission experiments; Bismuth; Broadcast technology; Circuits; Digital audio broadcasting; Digital video broadcasting; Indium tin oxide; Interference; Satellite broadcasting; Transponders; Video compression;
Journal_Title :
Broadcasting, IEEE Transactions on
