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Assignment 1 and 2

The document outlines two assignments due on April 17, 2025, focusing on technical questions related to television systems, including frame frequency differences, scanning lines, sync pulses, and video signal transmission. It also includes calculations related to aspect ratios, bandwidth, vertical resolution, and pixel density for various TV systems. The assignments require both theoretical understanding and practical calculations in the field of television technology.

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49 views2 pages

Assignment 1 and 2

The document outlines two assignments due on April 17, 2025, focusing on technical questions related to television systems, including frame frequency differences, scanning lines, sync pulses, and video signal transmission. It also includes calculations related to aspect ratios, bandwidth, vertical resolution, and pixel density for various TV systems. The assignments require both theoretical understanding and practical calculations in the field of television technology.

Uploaded by

bfxvs7s84h
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Assignment 1 Due Date 17/4/2025

1. Why is picture frame frequency of 25 frames per second in Tanzania and 30 per second in
USA?
2. Why is flicker not removed by progressive scanning?
3. Why is the number of scanning lines per frame always odd?
4. Why is the vertical deflection very slow as compared to the horizontal
deflection?
5. Why are sync pulses needed in TV systems?
6. Why is retrace blanked?
7. Why is AMVSB preferred to FM for transmission of video signals?
8. Why is SECAM system called sequential?
9. What would happen if the conventional TV transmission using 625 or 525 lines per frame is
viewed on a 1-metre wide screen?
10. How is the problem of cross-talk interference removed in HDTV?
11. What is the difference between a TV receiver and a video monitor?

Assignment 2 Due Date 17/4/2025


1. If aspect ratio is 4:3 in a conventional TV and 16:9 in an HDTV, calculate width and height
for 100 cm size screen for both TV system.
2. Calculate number of lines (n) per frame to subtend an angle of 1 minute by a space S= n/h at
at distance of 4 times the height h of screen.
3. Calculate the bandwidth for a TV system, having the following specifications.
Lines per frame = 625, frame frequency = 25 Hz, retrace time for each line = 12.5 ms, time
of vertical blanking for each field = 1280 ms and Kell factor = 0.72
4. Calculate vertical resolution of a TV system, having 5.5 MHz bandwidth and 52 ms trace time.
5. Calculate the bandwidth for a system in which Rh = 520 and t = 52 ms (CCIR-B system)
6. Calculate the bandwidth for a system in which Rh = 450 and t = 53.5 ms (CCIR-M system)
7. In CCIR-B system, total number of scanning lines per frame is 625, and the lines lost per field
is 20. calculate vertical and horizontal resolutions, presuming Kell factor equal to 0.7.
8. In CCIR-M system, NT = 525, NL = 42. Calculate RV and RH
9. Calculate the minimum distance between adjacent pixels for the viewing distance equal to 2.5
m
10. Calculate the number of pixels in 50 cm size TV screen for question no. 9 above.

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