Digital Video and Audio Broadcasting Technology: A Practical by Walter Fischer

By Walter Fischer

"Digital Video and Audio Broadcasting expertise – a realistic Engineering consultant" bargains with all of the most crucial electronic tv, sound radio and multimedia criteria comparable to MPEG, DVB, DVD, DAB, ATSC, T-DMB, DMB-T, DRM and ISDB-T. The booklet presents an in-depth examine those topics when it comes to sensible event. additionally it comprises chapters at the fundamentals of applied sciences similar to analog tv, electronic modulation, COFDM or mathematical ameliorations among time and frequency domain names. the eye within the respective box less than dialogue is focussed on elements of measuring innovations and of measuring perform, in each one case consolidating the data imparted with quite a few sensible examples. This publication is directed essentially on the professional operating within the box, on transmitters and transmission apparatus, community making plans, studio know-how, playout facilities and multiplex heart know-how and within the improvement departments for leisure electronics or television try engineering. because the intire box of electric communications know-how is traversed in a large arc, those people who are scholars during this box are usually not excluded either.

"Digital Video and Audio Broadcasting expertise – a pragmatic Engineering advisor" is the second and grealtly enlarged version of Walter Fischer’s "Digital Television", the good verified reference paintings in this not easy technology.

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Additional resources for Digital Video and Audio Broadcasting Technology: A Practical Engineering Guide

Example text

This can only be determined by means of the PID of the transport stream packet. The actual payload data rates in the payload can fluctuate; there may be stuffing to supplement the missing 184 bytes. This asynchronism has great advantages with regard to future flexibility, mak- 42 3 The MPEG Data Stream ing it possible to implement any new method without much adaptation. , in DAB (digital audio broadcasting) cannot be applied and different contents can not be protected to a greater or lesser degree as required.

The MPEG-2 transport stream is a completely asynchronous signal and its contents occur in a purely random fashion or on demand in the individual time slots. There is no absolute rule which can be used for determining what information will be contained in the next transport stream packet. The decoder and every element on the transmission link must lock to the packet structure. 3 Information for the Receiver 43 used for finding out what is actually being transmitted in the respective element. On the one hand, this asynchronism has advantages because of the total flexibility provided but there are also disadvantages with regard to power saving.

4 Transmission Methods Analog television is disseminated over three transmission paths which are: terrestrial transmission paths, via satellite and by broadband cable. The priority given to any particular transmission path depends greatly on the countries and regions concerned. In Germany, the traditional analog “antenna TV” has currently only a minor status with fewer than 10%, this term being used mainly by the viewers themselves whereas the actual technical term is “terrestrial TV”. The reason for this is the good coverage by satellite and cable, and more programs.

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