Title :
A PALplus compatible HDTV encoder system
Author :
Schmidt, G. ; Dooley, L.S. ; Buchwald, W.P.
Author_Institution :
FH-Wolfenbuettel, Fb-Elektrotechnik, Germany
fDate :
8/1/1994 12:00:00 AM
Abstract :
The paper presents a new implementation for realising PALplus signals from high-definition television (HDTV) transmissions. A proposed encoder design is introduced, which decomposes the HDTV input into two separate channels, the first of which subsamples the input signal to produce the standard resolution TV signal, and the second derives a digitally compressed residual component. The problems of non-uniform line structure due to the decimation of an interlaced signal are addressed, as are the visible distortions caused by aliasing and cross-talk effects, with appropriate solutions presented. Finally the important issues of colour enhancement and the composition of the compatible signal are briefly discussed
Keywords :
codecs; colour television; crosstalk; digital filters; filtering and prediction theory; high definition television; image processing; television interference; video equipment; video signals; PALplus compatible HDTV encoder system; aliasing; colour enhancement; compatible signal; cross-talk effects; decimation; digitally compressed residual component; encoder design; high-definition television; input signal; interlaced signal; nonuniform line structure; signal composition; standard resolution TV signal; visible distortions; Communication standards; Distortion; HDTV; Proposals; Satellite communication; Signal design; Signal resolution; Standards development; TV broadcasting; TV receivers;
Journal_Title :
Consumer Electronics, IEEE Transactions on
