Final answer:
AM is used to protect critical video information like brightness and sync pulses in broadcasting.
Explanation:
Amplitude modulation (AM) is the transmission scheme used to protect critical video information such as average brightness and synchronizing pulses. In the context of television broadcasting, the TV video signal is transmitted using AM, while the TV audio signal is transmitted using Frequency modulation (FM). AM helps ensure the integrity of important visual data despite noise and interference.
Learn more about Transmission schemes in video broadcasting here:
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