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MIO–CCE–4K/3G
SMPTE ST 2110/4K/3G/HD/SD Closed Caption Encoder with Media–to–IP Streaming
n=3
means that legitimate line 21 control codes are aligned and delayed so that the two byte control
code pairs are transmitted in the same field. Each control code pair is sent twice.
n=4
provides the same processing as for n=3. No non-line 21 codes are transmitted and the
control
codes are converted (if necessary) to the correct equivalent code for the current video field.
Examples:
^A3<cr>
^A3<sp><cr>
^A3<sp>1<cr>
^A3<sp>F2<cr>
^A3<sp>3<sp>F1<cr>
^A3<sp>C1<cr>
^A3<sp>3<sp>T1<cr>
5.3.15.
Real Time State
In Real Time state, incoming data from the caption computer is transferred as it is typed into the appropriate
data stream. The line may be edited using ^H (backspace) or ^X (delete line). A delay of 1 to 9 seconds
can be inserted by including ^Bn into the data (n is the number of seconds of delay desired).
If a caption data channel is specified, captions will be in rollup format with a specified number of lines. The
default format is 3 line caption rollup for caption data channels and text format for text channels.
When the data channel is put into the real time state, upstream data on the specified channel will be blocked
from entering the output queue of the encoder. All subsequent data is part of the data stream until ^C is
received or the encoder is reset. If the specified data stream is a text channel, articles will be suspended
from the output queue while the real time state is active. All caption information in the non-specified data
channels will be passed through.
Real Time state is normally terminated by a ^C. Articles will be re-enabled into the output queue starting
with the suspended article. If upstream data was enabled prior to entering the Real Time State then it will
be re-enabled when the Real Time state is terminated.
Command:
^A2<sp>dc<sp>rl<sp>Bbl<cr>
Default:
^A2<sp>C1<sp>3<sp>B15<cr>
The parameter dc identifies the data channel that will be placed in the Real Time state.
The rl parameter identifies the number of rollup rows and the bl parameter identifies the base line if the dc
parameter is one of the caption data channels. If the base line is specified the roll up line must also be
specified.
Examples:
^A2<cr>
^A2<sp>T2<cr>
^A2<sp>C3<sp>2<cr>
^A2<sp>C4<sp>3<sp>B10<cr>
Page - 60
Field 1 in Direct Control mode 4
Field 1 in Direct Control mode 4
Field 1 in Direct Control mode 1
Field 2 in Direct Control mode 4
Field 1 in Direct Control mode 3
Caption channel 1 in Direct Control mode 4
Text channel 1 in Direct Control mode 3
Caption 1 in Real Time State with 3 line rollup at base line 15
Text 2 in Real Time State
Caption 3 in Real Time State with 2 line rollup at base line 15
Caption 4 in Real Time State with 3 line rollup at base line 10
Revision 1.0
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