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Definition: 1080i


The 1920x1080 "interlaced" HDTV format. The majority of HD cable and satellite TV programs are delivered in 1080i resolution, while other HD programs are broadcast in 720p. The 1080-line formats provide the maximum lines of resolution in the HDTV standard; however, interlaced 1080i delivers an image that is not quite as sharp as progressive 1080p, especially when rendering fast motion. See interlaced, HDTV, 1080p and 720p.