A/V technology and technical terms explained

temporal artifact - In a digital video image, a picture imperfection that occurs over several frames, often in smooth-textured areas and around high-contrast edges of moving video objects. Similar to spatial artifacts, both often referred to as mosquito noise.

temporal resolution - One of two possible ways to measure resolution in a video image; the other is spatial. Describes the amount of picture detail in a moving image, measured by the number of lines of resolution delivered over a given period of time. When an image moves rapidly, a 720p HDTV display will provide more picture information than a 1080i HDTV display because progressive scan produces twice as many frames in the same period of time as 1080i.

terrestrial broadcast - Standard over-the-air broadcasts, as opposed to satellite or cable transmission.