DigitalVideoAndHDTVAlgorithmsAndInterfaces.pdf

Voltage, mV
700
350
0
-300
0 H
EIA/CEA-770.2, Standard
Definition TV Analog Component
Video Interface.
4.7 Time, µs
35 2 / 3
Figure 41.3 480i component analog luma
waveform with SMPTE levels and zero setup.
52 8 / 9
63 5 /9
Figure 41.3 shows a waveform drawing of luma in
a 480i component analog interface according to the
EBU Tech. N10 standard. In North America, the levels
of EBU N10 mysteriously became known as “SMPTE
levels,” or “SMPTE/EBU N10 interface,” even though
N10 is solely an EBU standard, and though SMPTE has
never standardized a component analog luma/color
difference interface.
EIA/CEA has standardized the 700 mV, zero-setup
levels for use by consumer electronics devices such as
DVD players and set-top boxes, for 480i and 480p
formats at 4:3 and 16:9 aspect ratios.
Component analog Y’PBPR interface, industry
standard
Unfortunately, equipment from two manufacturers was
deployed before SMPTE reached agreement on
a standard component video analog interface for studio
equipment. Although it is sometimes available as an
option, the SMPTE standard is rarely used in 480i.
Instead, two “industry” standards are in use: Sony and
Panasonic. Ideally the Y’PBP R nomenclature would
signify that luma has zero setup, and that color difference
components have the same excursion (from black
to white) as luma. However, both of the industry
CHAPTER 41 480 i COMPONENT VIDEO 509