Abstract
This chapter provides an overview of the common video signal formats and their timing. Video formats discussed include 480i, 480p, 576i, 576p, 720p, 1080i, and 1080p. In digital component video, the video signals are in digital form (YCbCr or R’G’B’), being encoded to composite NTSC, PAL, or SECAM only when it is necessary for broadcasting or recording purposes. NTSC and PAL are analog composite video signals that carry all timing and color information within a single signal. Analog component signals are comprised of three signals—analog, R’G’B’, or YPbPr. Referred to as 480i, the frame rate is usually 29.97 Hz (30/1.001) for compatibility with NTSC timing. The analog interface uses 525 lines per frame, with active video present on lines 23–262 and 286–525.
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