User`s manual

4. Basics
Barco – iStudio – R5976569 – user's manual – revision 09 – March-2007
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4.2 Additional video related input
The HYDRA and iSTUDIO is able to detect and display video related information such as closed caption (CC),
teletext (TT), extended data structure (XDS), vertical interval time code (VITC), wide screen signaling (WSS) and
video index information coding (VLI) and embedded audio. Furthermore GPIO’s can be processed and LTC can be
used for genlock. Under monitor displays (UMD) can be displayed in video windows. The following sections ex-
plain the way the respective input is used by iS
TUDIO. Please refer to the HYDRA user’s manual, to see which input
card supports which of the below features.
4.2.1 Closed caption
Closed captions (CC) are captions that are hidden in the video signal. The HYDRA can detect closed captions and
display it in the video window. An indicator can be activated to show, if a closed caption is available or not. On
the Properties tab – VBI subtab of the Edit object dialog box, see section
5.6.4 Edit object…, one of the closed
caption channels can be selected for displaying and the other above mentioned settings can be set.
When displaying CC please consider the following:
• Audio bars are always placed on top of the CC information.
• The video window must be sufficiently big to display closed captions.
• If the video window is small, all italic CC text is displayed as plain text.
• Some seldom-used features of CC like flashing and special character sets are not supported.
4.2.2 Teletext
Teletext subtitles of a video source and an indictor showing the availability of teletext can be displayed. Please
see section
5.6.4 Edit object… (Properties tab – VBI subtab).
4.2.3 Vertical interval time code
The VITC signal of a video source can be displayed if a signal is available. Please see section 5.6.4 Edit object…
(Properties tab – VBI subtab).
4.2.4 WSS, VLI, AFD and ETSI
If available in the signal, WSS and VLI information can be displayed in the video window, see section 5.6.4 Edit
object… (Properties tab – WSS subtab). AFD or ETSI lines can be indicated and displayed. WSS and VLI require the
UK region to be selected in the Module properties dialog box, see section
5.3.4 Setup module.
4.2.5 Tally
A tally is a status indicator that can visualize one of many system states. Some examples are alarm visualization,
hardware GPIO state, software trigger (XML command), etc. Two tallies can be displayed per video window. In
addition a tally object is able to display up to 16 freely selectable tallies. Please refer to section
5.6.4 Edit object…
(Edit object dialog box – Properties tab (of a video object) – Tally subtab and Edit object dialog box – Tally tab
(of a tally object)). The configuration of the tallies is explained in section
5.3.7 Setup source (Setup Source dialog
box – Tally tab).
4.2.6 XDS
XDS information contains the program name and the program rating. This information can be displayed. For this
purpose the second line of the UMD is used. Therefore XDS must be activated and the UMD must be configured
respectively, see section
5.6.4 Edit object….
4.2.7 UMD
The UMD can be used to display a name on a label of the video source, see section 5.6.4 Edit object… (Edit object
– UMD tab).