Grass Valley Kalypso User Manual V.15.0 - Manual (Page 68)

68 Kalypso — User Manual
Section 2 — Concepts
Source Patching
The Kalypso system allows logical sources to be associated with different
engineering sources. A source patch table is used to map Logical IDs to
Engineering IDs. This table acts like a patch bay. It then becomes possible
to use effects in different environments. For example, effects created in one
production truck equipped with one set of devices can be used in a dif-
ferent truck with different devices by modifying the source patch table.
Source Memory
Keying and other parameters can be saved to a separate source memory for
every Kalypso system source. These parameters can be applied automati-
cally whenever that source is selected. See Source Memory
on page 105 for
specific information.
Buses and Crosspoints
A bus is technically defined as a signal path where one of several available
inputs can be selected to feed a single output. A crosspoint is an electronic
switch that allows a signal to pass when the switch is closed. On video
switchers, a bus can be constructed containing a series of crosspoints,
which permits selecting which one of several incoming signals will be sent
out the bus. In
Figure 49 , source 2 has been selected on the background A
bus. This signal can now be called background video and is available for
further processing.
Figure 49. Buses with Crosspoints
Buttons on a control panel can be used to control the switching of cros-
spoints. The buttons are usually arranged horizontally, making it easy to
imagine the available signals coming in from the top, and the single bus
output signal going out the right side.
In earlier generation switchers, the terms crosspoint button and crosspoint bus
have been used in reference to control panel source selection. For a Kalypso
system, the terms source button and source bus will be used. These terms
better reflect a system operating philosophy that is based on sources rather
than crosspoints. The Kalypso system does not directly associate a source
select button with a physical crosspoint. The association goes first through
Background A Bus
Source Signal Inputs
1 2 3 4 5
Crosspoint
Switch
Signals Continue to Other Buses
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