Within the wide diversity of home computers that arose during the 1980s and early 1990s, many machines such as the Sinclair ZX Spectrum or Commodore 64 (C64) had borders around their screen, which worked as a frame for the display area.
overscan |
DigitalEurope (formerly EICTA) maintains the HD ready 1080p logo program that requires the certified TV sets to support 1080p24, 1080p50, and 1080p60, without overscan/underscan and picture distortion.