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| 型號： | SDA9589X |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | PIP IV Advanced SOPHISTICUS High-End Picture-In-Picture ICs |
| 中文描述： | 畫中畫四先進SOPHISTICUS高端畫中畫，圖像芯片 |
| 文件頁數(shù)： | 36/102頁 |
| 文件大?。?/td> | 2306K |
| 代理商： | SDA9589X |
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SDA 9489X
SDA 9589X
System Description
Micronas
4-36
Preliminary Data Sheet
4.9.3
The character’s color is either same as frame color (
CHRFRC
)
or the character appears
with a grey value programmable with
CHRY
.
The character’s background box is influenced by
CHRBGON
and
CHRBGY
. It can be
made transparent so that behind the characters the inset picture becomes visible.
Alternatively the semi-transparent mode can be chosen. At this mode the background
box contains the original picture content with reduced luminance value. This mode offers
a good trade-off between reduction of visible display area and character readability.
Character and Character Background Color
4.10
DA-Conversion And RGB / YUV Switch
SDA 9589X and SDA 9489X include three 7bit DA-converters. Brightness
BRTADJ
,
Contrast
CONADJ
and overall amplitude
PKLR
,
PKLG
,
PKLB
of the output signal are
adjustable. External RGB or YUV signals can be connected to the inputs IN1...3. By
forcing the FSW input to high-level these signals are switched to the outputs OUT1...3
while the internal signals are switched off. The FSW input signal is passed through to the
SEL output. The setting of
RGBINS
determines wether an RGB insertion is possible and
which source, the external picture or the PiP, gets priority.
Figure 4-19
Visualization of RGB/YUV insertion
The external RGB or YUV signals are each clamped to the reference levels of the DACs
to force uniform black levels in each channel. The clamping needs careful adjustment
especially for VGA applications. The position and the length of the blanking pulse as well
as the clamping pulse are adjustable (
CLPPOS, CLPLEN)
. If
READD
is set to ’1’ (100Hz
mode), all pulses are shortened by one half.
HZOOM
influences the adjustment range of
OSD
RGB/VYU
R/V
G/Y
B/U
FSW
SEL
OSD
OSD
OSD
RGBINS='10'
PIPON='1'
RGBINS='00'
PIPON='1'
OSD
OSD
RGBIN='1X'
PIPON='0'
OSD
OSD
RGBINS='11'
PIPON='1'
X
X
H
V
S
S
V
V
I
I
I
I
I
F
S
O
O
O
V
V
V
V
V
PiP IV
C
V
C
V
C
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