GUIDE TO INSTALLATION AND OPERATION
XVP-3901 |
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and the V-chip information from line 21 field 2 of the incoming 525-line signal may be inserted as ancillary
packets required for FCC compliance. NTSC and DTV closed captions will be embedded, in the 3G/HD outputs,
within EIA-708-B packets as per SMPTE 334M. CC1 from NTSC field 1 is up-converted to DTV service 1, and
CC3 from field 2 is up-converted to DTV service 2.
•
3G/HD to 3G/HD Cross-conversion:
EIA-708-B closed captions are detected at the input and re-inserted into the output 3G/HD signal conforming to
the selected output 3H/HD format. EIA-608-B closed captions as per SMPTE 334M are not converted. Closed
captions insertion is disabled for 50Hz and 1080p23/1080p23sF/1080p25/1080p29 sources.
SD Input/Output Config
section
Line 21:
Specifies if line 21 (or line 23 in PAL) shall be considered as blanking or active video; this selection affects
Close Caption
availability, controlled in the
Close Caption
sub-section of this tab (see above). Depending on the
settings and input/output selected, it also affects the output video, as shown in this table:
For 3G/HD Output:
Input Format Line 21 Status CC Insertion
Effect on HD Output
3G/HD 60 Hz N/A
Off
No DTV closed captions.
N/A
Auto
DTV closed captions enabled
SD 60 Hz
Blanking
Off
Input line 21 ignored for scaling, image slightly upscaled. No DTV closed captions.
Auto
Input line 21 ignored for scaling, image slightly upscaled. DTV closed captions
enabled.
Active
N/A
Input line 21 has video. No DTV closed captions.
3G/HD 50 Hz N/A
N/A
No effect
SD 50 Hz
Blanking (line 23)
N/A
Input line 23 ignored for scaling, image slightly upscaled. No DTV closed captions.
Active
N/A
Input line 23 has video. No DTV closed captions.
The
Line 21
pulldowns in the SD Output Meta/Meta subtab and the 3G/HD Output Meta/Meta subtab follow each
other – change one and the other is also changed.
Blanking
section
Insertion of the Vertical Blanking Interval content may be set to
OFF
or
Auto,
using the pull-down box. Insertion is
disabled if no VBI data is present.
•
For HD outputs, VBI insertion may only be enabled when the detected input is HD.
•
Audio, closed-captioning, time-code, and AFD data is not handled by this parameter. The only exception is
time code during HD-to-HD operation, in which case the user must enable this parameter along with the time
code insertion pulldown menu, in order to properly process time code insertion.
•
HD to HD (same format): All incoming HANC packets within H blanking and VANC packets within VBI may be
bypassed to the output.
•
HD to HD (different format) cross-conversions also supported.
•
HD to HD blanking conversions are applied on luminance channel only. Packets in chrominance channel not
supported.
•
VBI insertion is disabled for 1080p23/1080p23sF/1080p25/1080p29 input HD formats
•
3G to 3G conversions: same as for HD to HD conversions
5.4.4.2 Meta / Namedropper sub-tab
Namedropper is a method of inserting control information for
down-stream graphics inserters. It is a waveform-shape
located on line 18 in SD, but a VANC packet on line 11 in
HD.
Figure 5.17
Video Output 3G/HD - Meta/Namedropper
