Title :
Coding and transmission of HDTV at the STM-1 rate of SDH
Author :
Sawada, Katsutoshi ; Hashimoto, Hideo ; Takagi, Seiichi
Author_Institution :
NTT, Kanagawa, Japan
Abstract :
An HDTV bit-rate-reduction codec that can encode an 1125-line/60 Hz HDTV signal at about 133 Mbit/s and transmit it at the STM-1 rate of 155.52 Mbit/s in the synchronous digital hierarchy (SDH) is presented. A hybrid DPCM/DCT coding scheme is employed, in which adaptive intrafield/interframe mode selection is performed only for low-frequency DCT coefficients. The codec hardware was implemented and transmission experiments were carried out for SDH transmission systems. From these experiments, it was confirmed that the codec can transmit HDTV at the STM-1 rate with picture quality that is satisfactory for HDTV distribution. Technical and operational feasibility was also confirmed
Keywords :
cable television; codecs; data reduction; high definition television; image coding; synchronous digital hierarchy; 133 Mbit/s; 155.52 Mbit/s; 60 Hz; HDTV coding; HDTV distribution; SDH; STM-1 rate; adaptive intrafield/interframe mode selection; bit-rate-reduction codec; codec hardware; encoding; hybrid DPCM/DCT coding scheme; operational feasibility; picture quality; synchronous digital hierarchy; technical feasibility; transmission; transmission experiments; Asynchronous transfer mode; Bit rate; Codecs; Discrete cosine transforms; Frequency; HDTV; Optical fibers; Sampling methods; Synchronous digital hierarchy; Transmission lines;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.229979
