User manual

Intuition Imagestore HDTV User Manual
Page 188 Miranda Technologies Ltd
Imagestore HDTV has only two keying layers. The Intuition has up to 16
(virtual) keying layers. How do we address both units via the Imagestore
control port?
The Imagestore keying layer parameter in the command protocol is
represented by a single character, this is currently set to 0 (DSK1,
midground) or 1 (DSK2, foreground) to address the keying layer in the
Imagestore HDTV. The character range has been extended from 0x0 to 0xF
to address the keying layers above 1. This means that automation vendors
can now support the greater number of keying layers on offer.
If Intuition is being controlled directly via automation then the full 16 layers
are available. If it is connected and controlled via an Imagestore then only 14
layers are available.
For example, if an Imagestore HDTV receives a command to load a graphic
into layer ‘2’, it will forward this command onto the Intuition to load the
graphic into the first Intuition keying layer. To do this it must subtract 2
from the layer value before relaying the command. Note, layer 0 in the
intuition is the first layer. To illustrate this further:
Imagestore
Layer Number
Intuition
Layer Number
0x0 (Midground)
0x1 (Foreground)
0x2 0x0
0x3 0x1
0x4 0x2
0x5 0x3
0x6 0x4
0x7 0x5
0x8 0x6
0x9 0x7
0xA 0x8
0xB 0x9
0xC 0xA