Figure 1-2: Concorde¥4500 System Block Diagram - PictureTel Concorde 4500 Servicing Manual

CONCORDE¥4500 SYSTEM OVERVIEW
Wireless
keypad
or Quick Pad
Keypad
External
keypad
M
micro-
i
phones
x
C
Microphone
o
n
t
r
1 2 3
External MIC A
o
External MIC B l
4 5 6
Line in
7 8 9
Power mic
0 #
*
External MIC A
External MIC B
Line in
Power mic
1-4
Video Board
Main camera
Auxiliary camera
Graphics camera
Document camera
VCR in
Far-end video
Graphics video
VCR out
Monitor 2
Monitor 1
Motion video output
Merge
Graphics video output
Merge
Main camera control
Auxiliary camera control
Graphics camera control
Audio Board
2-wire Phone-add
analog board
phone line (2-wire)
VCR out
VCR in
Line out
M M
i i
x x
e e
r r
Keypad
control
Figure 1-2: Concorde•4500 System Block
Motion video input
Send vidio DMA channel
Input
Video
frame
matrix
store
Merge PIP
Text overlay
memory
DMA channel
Output
frame store
Annotation
memory
Graphics image
frame store
Camera
and keypad
control
Phone line
echo
cancelation
Audio
bridge
Room
echo
cancelation
Audio Audio
compression decompression
Diagram
System control bus
System control bus
System
control
bus