Rohde & Schwarz R&S DVRM Application Note 1 free download

File name R&S DVRM Application Note 1.pdf

BROADCASTING DIVISION APPLICATION NOTE The most common abbreviations used in the standards for digital TV: MPEG2, DVB and ATSC Products: MPEG2 DTV RECORDER GENERATOR DVRG MPEG2 MEASUREMENT GENERATOR DVG MPEG2 REAL TIME MONITOR DVRM MPEG2 MEASUREMENT DECODER DVMD QAM TEST RECEIVER/DEMODULATOR EFA TV TEST TRANSMITTER SFQ 7BM27_0E The most common abbreviations used in the standards for digital TV: MPEG2, DVB and ATSC The introduction of the transmission of compressed TV signals to MPEG2 and DVB for cable, satellite and terrestrial (COFDM) lead to the creation of many abbreviations that have to be explained to the "uninitiated". In the previous three lines, three abbreviations whose meanings are not obvious have already been mentioned. A table explaining what these abbreviations mean is therefore essential. 1 MPEG2 Abbreviations DFD Displaced Frame Difference Differential picture if there is Adaptation Field motion Ancillary program data (especially PCR) which are DPCM Differential Pulse Code uncoded and are transmitted Modulation at least every 100ms acc. to MPEG2 or 40 ms acc. to DVB specifications DTS Decoding Time Stamp BAT Bouquet Association Table Stamp for decoding time, only Table describing a bouquet of transmitted if not identical with programs offered by a PTS; reference to PID broadcaster EIT Event Information Table Block 8x8 pixel block, MPEG2 TV guide coded ES Elementary Stream CA Conditional Access Compressed data stream for Information of whether the video, audio or data. program is scrambled Preliminary stage to PES CAT Conditional Access Table GOP Group of Pictures (PID=1): Reference to scrambled programs I, P, and B pictures