Ricoh PRIPORT VT 2000 Series Service Manual page 82

2.11.4 Make-up Control Circuit
H: Background
L: Image
MTF. DATA
Modulated Image
Data
H: Background
L: Image
M. DATA 1
Image Data
S
Outline Image
Data
Pattern
Generator
CMDATA
Solid
Fill
Data
Area
Processing
Selection Table
Make-up Selection
Terminal
Make-up
No
Input Signal
BCD 1
BCD 2
BCD 3
BCD 4
The make-up control circuit on the image processing board edits the image
using the above logic circuit.
The modulated image data, the outline image data, the background pattern
data and the designated area data are processed simultaneously in the
image processing board.
When the operator inputs a make-up number, the main board sends a 4-bit
signal to the make-up control circuit.
The circuit selects the corresponding make-up selection terminal (D0 ~ D13).
This determines the path that image edit data takes before being output at
the "W" terminal.
DM
DM
F/F
D Q
Q
D0 D1 D2 D3
OFF 1 2 3
H L H L
H H L L
H L H H
H H H H
DM
D4 D5 D6 D7
11.21
4 5 6 7 .51.61
H L H L
H H L L
L L L L
H H H H
2-55
28 February '91
Selector
D 13 (Fn16.26.56.66)
D 12 (Fn15.25.55.65)
D 11 (Fn14.24.54.64)
D 10 (Fn13.23.53.63)
D 9 (Fn12.22.52.62)
D8 (Fn11.21.51.61)
D7 (Fn7)
D6 (Fn6)
D5 (Fn5)
D4 (Fn4)
D3 (Fn3)
D2 (Fn2)
D1 (Fn1)
D0
D8 D9 D10 D11
12.22 13.23 14.24 15.25
.52.62 .53.63 .54.64 .55.65
L H L H
H L L H
H H H L
L L L L
W
Image
Edit Data
A
BCD1
B
BCD2
C BCD4
G
BCD8
D12 D13
16.26
.56.66
L H
H L
L L
L L