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In television transmission, the type of modulation used for video is
- a)DSB
- b)SSB
- c)VSB
- d)FM
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
In television transmission, the type of modulation used for video isa)...
- Television transmission involves the transmission of both audio and video signals. The video signal carries the visual information that is displayed on a television screen.
- To transmit the video signal, a modulation technique is used. Modulation is the process of modifying a carrier signal with the information to be transmitted.
- The type of modulation used for video transmission is VSB (Vestigial Sideband) modulation.
What is VSB Modulation?
- VSB modulation is a type of amplitude modulation (AM) where the sidebands of the modulated signal are partially suppressed or filtered. This is done to conserve bandwidth and reduce interference with adjacent channels.
- In VSB modulation, the carrier is modulated by the video signal, and the resulting modulated signal contains a main carrier and two sidebands.
- The lower sideband is fully transmitted, while the upper sideband is partially suppressed or filtered. This filtering or suppression of the upper sideband is called "vestigial," which means a trace or remnant is left behind.
- The vestigial sideband filtering helps to conserve bandwidth since the upper sideband contains redundant information that can be reconstructed at the receiver using the remaining lower sideband.
Advantages of VSB Modulation for Video Transmission:
- VSB modulation offers several advantages for video transmission:
1. Bandwidth efficiency: By suppressing the upper sideband, VSB modulation conserves bandwidth, allowing for more channels to be transmitted within a given frequency range.
2. Interference reduction: The partial suppression of the upper sideband helps to reduce interference with adjacent channels, improving the overall quality of the transmitted signal.
3. Compatible with existing receivers: VSB modulation is compatible with existing analog television receivers, making it a suitable choice for broadcasting video signals.
Conclusion:
- In television transmission, the type of modulation used for video is VSB (Vestigial Sideband) modulation.
- VSB modulation conserves bandwidth, reduces interference, and is compatible with existing receivers, making it an effective choice for transmitting video signals.
- To transmit the video signal, a modulation technique is used. Modulation is the process of modifying a carrier signal with the information to be transmitted.
- The type of modulation used for video transmission is VSB (Vestigial Sideband) modulation.
What is VSB Modulation?
- VSB modulation is a type of amplitude modulation (AM) where the sidebands of the modulated signal are partially suppressed or filtered. This is done to conserve bandwidth and reduce interference with adjacent channels.
- In VSB modulation, the carrier is modulated by the video signal, and the resulting modulated signal contains a main carrier and two sidebands.
- The lower sideband is fully transmitted, while the upper sideband is partially suppressed or filtered. This filtering or suppression of the upper sideband is called "vestigial," which means a trace or remnant is left behind.
- The vestigial sideband filtering helps to conserve bandwidth since the upper sideband contains redundant information that can be reconstructed at the receiver using the remaining lower sideband.
Advantages of VSB Modulation for Video Transmission:
- VSB modulation offers several advantages for video transmission:
1. Bandwidth efficiency: By suppressing the upper sideband, VSB modulation conserves bandwidth, allowing for more channels to be transmitted within a given frequency range.
2. Interference reduction: The partial suppression of the upper sideband helps to reduce interference with adjacent channels, improving the overall quality of the transmitted signal.
3. Compatible with existing receivers: VSB modulation is compatible with existing analog television receivers, making it a suitable choice for broadcasting video signals.
Conclusion:
- In television transmission, the type of modulation used for video is VSB (Vestigial Sideband) modulation.
- VSB modulation conserves bandwidth, reduces interference, and is compatible with existing receivers, making it an effective choice for transmitting video signals.
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Community Answer
In television transmission, the type of modulation used for video isa)...
In TV Transmission the use of FM is made for Audio transmission and AM for Video transmission.
Vestigial Sideband Modulation (VSB) is used for video modulation in TV transmission due to the following reasons :
Vestigial Sideband Modulation (VSB) is used for video modulation in TV transmission due to the following reasons :
- Video signal exhibits a large bandwidth and significant low-frequency content which suggests the use of VSB.
- VSB (vestigial sideband) transmission transmits one sideband fully and the other sideband partially thus, reducing the bandwidth requirement.
- The circuitry for demodulation in the receiver should be simple and therefore cheap. VSB demodulation uses simple envelope detection.
The spectrum of a vestigial sideband is as shown:
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In television transmission, the type of modulation used for video isa)DSBb)SSBc)VSBd)FMCorrect answer is option 'C'. Can you explain this answer?
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