EVS Broadcast Equipment SA
13
Block schematic
HXT150
[QUAD SPEED AUIO BUS]
LOW LATENCY
UP-DOWN-CROSS
CONVERSION
- ARC -
- VIDEO BYPASS -
FRAME
SYNC
+
OFFSET
DELAY
COLOR
CORR.
3Gb/s, HD, SD OUT A2
3Gb/s, HD, SD OUT B2
LOW LATENCY
UP-DOWN-CROSS
CONVERSION
- ARC -
- VIDEO BYPASS -
WSS-VI-S2016
DETECTION
4 GROUP
EMBED
COLOR
CORR.
4 GROUP
EMBED
EQ
EQ
AFD
S2016
WSS
VI
AFD
S2016
WSS
VI
INTERNAL SYNAPSE BUS
REFERENCE
INPUTS
1
2
PLL
16 CHANNEL
DE-
EMBEDDING
GPI
INPUT
SELECT
QUAD SPEED
MULTIPLEXING
AUDIO BUS
32CH
OUT
TDM
MUX
TO
A
D
D
-O
N
AUDIO
V-FADE
&
DELAY
TRACK
ANC
INS
ANC
INS
OFFSET
DELAY
RACK
CONTROLLER
µP [LINUX]
AUDIO
V-FADE
&
DELAY
TRACK
FRAME
SYNC
+
OFFSET
DELAY
WST
DE-
EMBEDDING
Important notice
Historically, closed captions were transmitted in NTSC line 21
according to EIA-608. This allows two caption data bytes per field to
be transmitted. With the introduction of HD and DTV a new Closed
Caption specification was made, EIA-708. This allows sending more
data per field, for extended language, color support, PMT and EIT and
timecode data.
The new DTV caption format cannot be translated back to EIA-608.
However the EIA-708 may include EIA-608 data as "NTSC closed
captions" for compatibility with old decoders.
This card only de-embeds the NTSC closed captions, not the DTV
closed captions. It will not function with a DTV-only 708 closed
caption source.
