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Functional, simulation model for an experimental digital HDTV television system

: Zier, D.

Fernseh- + Kino-Technik : FKT 45 (1991), No.11, pp.586-93
ISSN: 0015-0142
Journal Article
Fraunhofer HHI ()
colour television receivers; digital communication systems; high definition television; picture processing; television standards; luminance processing; simulation model; television broadcast standards; linequincunx; subsampling; signal processing; tv transmitter; digital tv receiver; filter design; intermediate lines; ethernet; micro-vax computers; noise reduction algorithms; chrominance processing

Describes a test rig for HDTV, to investigate various television broadcast standards, such as Linequincunx and subsampling. Attention is paid to signal processing in the TV transmitter and a transmitter block diagram is presented. Proposals are also made for a digital TV receiver and 'operating windows' for filter design are shown, based either on intermediate lines or on 'progressive' operation. A functional simulation system for TV systems was constructed, in which the various subunits were connected by Ethernet, with availability of several Micro-Vax computers. Examples of TV picture sequences with various noise reduction algorithms are reproduced. Luminance and chrominance processing are described in detail.