Unformatted text preview: 5. What are the factors that one must consider when choosing the color sub-carrier frequency? What is the sub-carrier frequency used in NTSC color standard? 6. Draw a block diagram for demultiplexing YIQ components from the composite video signal (containing the baseband luminance signal and the QAM modulated I and Q). Explain each component. 7. Why are comb filters desired in separating luminance from chrominance than conventional low-pass/bandpass filter? 8. Draw the overall spectrum of a color TV signal (including Y, I, Q and audio) when modulated over a carrier frequency. 9. How can a monochrome TV set automatically extract the luminance signal from a broadcasted color TV signal? 10. Draw the block diagram of the NTSC color TV transmitter and receiver, and explain functions of each component. 11. Describe why backward compatibility is important in technology development....
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- Fall '07
- PAL, chrominance, color TV signal, baseband luminance signal