Title :
A digital IF-modulator for video and associated audio signals
Author :
Wenzel, Dietmar ; Speidel, Joachim
Author_Institution :
Inst. of Telecommun., Stuttgart Univ., Germany
Abstract :
A digital intermediate frequency modulator is presented. A composite colour video signal and two associated audio signals are converted into a digital composite TV signal with the spectrum at the intermediate frequency. The modulator is designed for the high quality requirements that exist in professional equipment for digital CATV head ends. The architecture of the digital modulator shown is optimized for an implementation with ASICs. The signal processing with reduced complexity is described in detail and the simulated results are presented
Keywords :
application specific integrated circuits; audio signal processing; cable television; digital integrated circuits; digital television; frequency modulation; modulators; video signal processing; ASIC; audio signals; composite colour video signal; digital CATV head ends; digital IF-modulator; digital composite TV signal; digital intermediate frequency modulator; intermediate frequency spectrum; professional equipment; signal processing; video signals; Color; Digital modulation; Finite impulse response filter; Frequency modulation; Low pass filters; Sampling methods; Signal to noise ratio; Synchronous digital hierarchy; TV; Video signal processing;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.765426
