guard band

plural guard bands · alternative guardband

1. broadcastingAn unused part of the radio spectrum between bands, for the purpose of preventing interference.
2. The unrecorded space between tracks on magnetic tape or other media which prevents the signals on adjacent tracks from interfering with each other.
3. quality controlThe amount by which minimum product specifications are increased to ensure that, even with measurement uncertainty, the product will meet the minimum specifications with a specified level of confidence.
4. computer graphicsA virtual area of the screen, bordering the real screen, to which any rendering is ignored, used to simplify clipping.