Digital Control System; (4-L) Digital Control Circuit - NEC MultiSync 4FGe Service Manual

4. Digital Control System

4-1. Digital Control Circuit
The following items are controlled by the Digital Control System.
Digital Control System
The relationship of the input and the output of CPU (IC851) is shown on Fig. 4-l-l
Model
V
Mode2
R
G
Mode3
R
B
Single
CPU
USER
CONTROLS
POSITION
GAIN
I
CAIN
SUB-BRIGHT
SUB-BRIGHT
(Fig 4-l-l) The BLOCK DIAGRAM of Digital Control System
Automatic Signal Identification
Automatic Sizing
Automatic Centering
Memory of Picture Data
D/A
Chip
PROGRAM
MEMORY
RAM
Multiplier
55
Converter
EEPROM
7
D/A Converter