GRASS VALLEY 8995DNC -, Инструкция по эксплуатации

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8995UPC/DNC/UDX — Instruction Manual 119
How to Use the AFD Conversion Tables
How to Use the AFD Conversion Tables
When an input signal contains an AFD Input Code, the resulting aspect
ratio of the output will be based on the AFD Input Code in relation to the
up or down conversion process, selections made in the aspect ratio con-
trols, and the supported outputs in the software conversion tables.
Refer to the example Aspect Ratio web page in Figure 66 on page 120 . Note
that the module is doing an up conversion from 480i/59.94 to 1080i/59.94
as reported in the web page header.
The AFD Input Status is reporting an Input Aspect Ratio of
4:3
and an AFD
Input Code of
1000
. To see what SMPTE format this represents, refer to AFD
Definitions For 4:3 Coded Frames on page 123 . In Table 14 on page 123 , refer
to the Active Formats column and find the illustration of the
1000
binary
code aspect ratio. It will look like the illustration in Figure 64 . The image is
full frame with an aspect ratio that is the same as the 4:3 coded frame.
Figure 64. AFD Input Code = 1000
The current settings for the mode and alignment on the Aspect Ratio web
page are
Full Height
and
Center
as shown in the example web page. Because
of specific software programming to meet the SMPTE AFD standard, the
resulting AFD Output Code is
1001
as reported on the Aspect Ratio web
page in the AFD Output Code. This produces an up converted image
output similar to the one shown in
Figure 65 . This image has a 4:3 aspect
ratio with a horizontally centered pillarbox in a 16:9 coded frame.
When Mode =
Auto
, the module software is programmed to attempt to pre-
serve full height while keeping as much vertical information as possible
while following the SMPTE AFD standard.
Figure 65. AFD Output Code = 1001