evertz hd9084, Instruction Manual

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HD9084 HDTV Caption Encoder Manual
Page 4-12 SERIAL CONTROL PROTOCOL
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> Field 1 in Direct Control mode 4
^A3<sp><cr> Field 1 in Direct Control mode 4
^A3<sp>1<cr> Field 1 in Direct Control mode 1
^A3<sp>F2<cr> Field 2 in Direct Control mode 4
^A3<sp>3<sp>F1<cr> Field 1 in Direct Control mode 3
^A3<sp>C1<cr> Caption channel 1 in Direct Control mode 4
^A3<sp>3<sp>T1<cr> Text channel 1 in Direct Control mode 3
4.3.15. 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>
Caption 1 in Real Time State with 3 line rollup at base line 15
^A2<sp>T2<cr> Text 2 in Real Time State
^A2<sp>C3<sp>2<cr> Caption 3 in Real Time State with 2 line rollup at base line 15
^A2<sp>C4<sp>3<sp>B10<cr> Caption 4 in Real Time State with 3 line rollup at base line 10
USO
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