| In order to display data information on early analog televisions, the data must be modulated, or conditioned, to the format that the television expects. TVs were designed to only accept signals through the aerial connector: signals originate at a TV station, are transmitted over the air, and are then received by an antenna and fed into the TV. Thus, other equipment, such as a VCR, DVD player, or video game console, which wishes to send a signal to such an old TV must replicate this process, in effect "faking" an over-the-air signal. Technically, this usually means combining the data with a carrier wave at a standardized frequency.
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