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With faster electronics making the delay unnecessary, the period has found other uses:
  • In color TV systems such as PAL and NTSC , this period includes the Colorburst signal.

  • In some professional systems, particularly satellite links between locations, the audio is embedded within the back porch of the video signal, to save the cost of renting a second channel.


In architecture, a back Porch is an architectural feature relating to a floor-like platform structure attached to the front entrance of a residence.


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