Title :
Digital SECAM quadrature encoding
Author_Institution :
Dept. of Radioreceivers & Television, State Univ. of Radio
Abstract :
SECAM color signal encoding require frequency domain processing. High frequency pre-emphasis is the most demanding due to group delay requirements of the notch filter and signal frequency: 3.900-4.756 MHz. This work is dedicated to the design of low frequency complex digital SECAM signal processing algorithm. Thus high frequency signals can be processed by low speed digital hardware. The signal carrier to bandwidth ratio of color SECAM signal is rather small (~1), so the Hilbert transform utilization require additional examination of resulting errors. This is done in this work theoretically and confirmed by mathematical modeling
Keywords :
Hilbert transforms; delays; digital filters; encoding; filtering theory; frequency-domain analysis; modulators; notch filters; signal processing; video signal processing; 3.9 to 4.756 MHz; HF pre-emphasis; Hilbert transform; LF DSP algorithm; SECAM color signal encoding; complex digital filter; digital SECAM quadrature encoding; digital quadrature modulator; frequency domain processing; group delay; high frequency pre-emphasis; high frequency signals; low speed digital hardware; mathematical modeling; notch filter; signal carrier to bandwidth ratio; signal frequency; signal generation error; Algorithm design and analysis; Color; Delay; Encoding; Filters; Frequency domain analysis; Hardware; Signal design; Signal processing; Signal processing algorithms;
Conference_Titel :
Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-5747-7
DOI :
10.1109/ICOSP.2000.891752
