Title :
Encoding and decoding in the 6-MHz NTSC-compatible widescreen television system
Author :
Inoue, Shuji ; Kageyama, Sadashi ; Uwabata, Hideyo ; Yasumoto, Yoshio
Author_Institution :
Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
fDate :
3/1/1991 12:00:00 AM
Abstract :
The Matsushita 6-MHz NTSC-compatible widescreen television system using quadrature amplitude modulation (QAM) of the video carrier and inverse Nyquist filtering is an advanced television system using the side panel method. The principle of QAM is reviewed, and the encoding and decoding processes are discussed. Methods for time expansion and time compression for each panel and very-low-frequency frequency splitting (e.g., 0.1 MHz) at a sampling frequency of 14.3 MHz are detailed. Transmitting and regenerating the colour subcarrier for a multiplex signal and a method of preventing noticeable differences between panels are also described
Keywords :
amplitude modulation; colour television; decoding; encoding; high definition television; 0.1 MHz; 14.3 MHz; 6 MHz; HDTV; HF; Matsushita; NTSC-compatible widescreen television system; QAM; VLF; advanced television system; colour subcarrier; decoding; encoding; frequency splitting; inverse Nyquist filtering; multiplex signal; quadrature amplitude modulation; sampling frequency; side panel method; time compression; time expansion; video carrier; Bandwidth; Decoding; Encoding; Filters; Frequency; HDTV; Machine vision; Phase modulation; Quadrature amplitude modulation; TV broadcasting;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
