© The Institution of Electrical Engineers
The hardware implementation of a 130 Mbit/s (H4 rate) HDTV CODEC based on the DCT (discrete cosine transform) algorithm is studied for transmission in broadband ISDN (BISDN). The intrafield 2-dimensional DCT, nonlinear fixed bit quantisation of eight classes with switchable operation between y and Pr/Pb, and the four parallel signal processing possible by DCT are also implemented in the CODEC. Performance evaluation confirms that the developed CODEC has sufficient picture quality and is practical for HDTV distribution use.
References
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Kawai, O., Okazaki, T., Matsuda, K., Hosokawa, T.: `100–160 Mb/s HDTV ADPCM codec', 3rd Int. Workshop on HDTV, 1989, Torino, Italy.
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Strobach, P.: `Quadtree-structured interframe coding of HDTV sequences', SPIE Conf. Visual Communications and Image Proceeding, 1988, Cambridge, USA.
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Le Gall, D., Gaggioni, H., Chen, C.: `Transmission of HDTV signals under 140Mb/s using a subband decomposition and discrete cosine transform coding', 2nd Int. Workshop on Signal Processing of HDTV, 1988, L'Aquila, Italy.
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