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CHAPTER 18 OSDC
18.2.9.4
Character Trimming
Horizontal synchronous operation can be synchronized with the leading edge or trailing
edge.
■ Trimming Output Control
Trimming output control turns on or off the trimming of characters according to their character
background type.
One of the four character background types can be set for each line.
Table 18.2-12 shows the trimming output control of line control data set 1 (command 3): Bits LFD
and LFC.
Table 18.2-12 Trimming Output Control (Setting for Each Line)
Trimming output
control (Setting for
each line)
LFD
0
0
1
1
x: Off*
O: On
*: The display is "no pattern background" in pattern background 1 or 2 mode.
490
Character background type
(Setting for each character)
LFC
MM1
MM0
0
0
0
1
0
1
0
1
1
0
0
0
1
1
1
0
1
1
0
0
0
1
0
1
0
1
1
0
0
0
1
1
1
0
1
1
Background display
Undisplay
Solid background
Concaved, shaded background
Convexed, shaded background
Undisplay
Solid background
Concaved, shaded background
Convexed, shaded background
Undisplay
Solid background
Concaved, shaded background
Convexed, shaded background
Undisplay
Solid background
Concaved, shaded background
Convexed, shaded background
Trimming
output
x
x
x
x
O
x
x
x
O
O
x
x
O
O
O
O
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