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  2. Digital television adapter - Wikipedia

    en.wikipedia.org/wiki/Digital_television_adapter

    A converter box takes the digital signal from the antenna and outputs composite video (for SD TVs) or HDMI (for HD TVs). A RF/antenna output, if present on a converter box, is usually just a passthrough ("LOOP OUT" which does not provide the box's output signal, but only provides the raw antenna input signal to watch analog channels via a TV ...

  3. RF modulator - Wikipedia

    en.wikipedia.org/wiki/RF_modulator

    The modulator is then programmed to broadcast the signals on a certain frequency. That RF broadcast is then received by the connected TV. When the TV is tuned to the programmed channel, the video and audio signal of the source device is accessed. RF modulation can become difficult in a CATV system. High pass, low pass, and notch filters must be ...

  4. List of video connectors - Wikipedia

    en.wikipedia.org/wiki/List_of_video_connectors

    Also common in North America for early home computers and game consoles, older VCRs, RF modulators, and even CECBs due to lack of other connectors. Once not used outside North America for TV antennas (except for satellite reception), but gaining acceptance elsewhere with advent of digital TV. N connector (Neill connector)

  5. Composite video - Wikipedia

    en.wikipedia.org/wiki/Composite_video

    The process of modulating RF with the original video signal, and then demodulating the original signal again in the TV, introduces losses including added noise or interference. For these reasons, it is best to use composite connections instead of RF connections if possible for live signals and sample the source FM RF signal for recorded formats.

  6. Video modulation - Wikipedia

    en.wikipedia.org/wiki/Video_modulation

    Video signals are usually encoded into binary digit (0, 1) or seven digit pulse-code modulation (PCM), which is a method used to digitally represent original video signal. . The video signal converted to binary digit PCM at the point of origin can be then transmitted over existing telephone cable or wire directly to the destination

  7. Cable television headend - Wikipedia

    en.wikipedia.org/wiki/Cable_television_headend

    Analog terrestrial TV signals require a processor which is a RF receiver that outputs video and audio. In some cases the processor will include a built-in modulator. Digital terrestrial TV signals require a special digital processor. Digital channels are usually received on an L band QAM stream from a satellite, which uses multiplexing. Using ...

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