High-definition (HD) television refers to video having resolution substantially higher than traditional, standard-definition (SD) television systems.  HD has one or two million pixels per frame, roughly five times that of SD.

HD systems are identified with three major parameters:

  • Frame size in pixels is defined as number of horizontal pixels × number of vertical pixels, e.g. 1280 × 720 or 1920 × 1080.  Often, the number of horizontal pixels is implied from context and is omitted, as in the case of 720p and 1080p.
  • Scanning system is identified with the letter p for progressive scanning or i for interlaced scanning.
  • Frame rate is identified as the number of video frames per second.

Aircraft-certified High-definition LCD Monitors

Several companies manufacture aircraft-certified high-definition LCD monitors: