
Figure 27.2
Comparison of 7.5% and
zero setup. The left-hand third shows the video levels of
composite 480i video, with 7.5% setup and 10:4 picture-to-sync ratio. This coding is used in
some studio equipment and in most computer monitor interfaces. The middle third shows zero
setup and 10:4 picture-to-sync, as used in 480i video in Japan. EBU NIO component video, 576i
systems, and HDTV use zero setup, 700 mV picture, and 300 mV sync, as shown at the right.
The term
pedestal
refers to the absolute value of the
offset from blanking level to black level, in IRE units or
millivolts: Composite 480i NTSC incorporates ...