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參數(shù)資料
| 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(jìn)SOPHISTICUS高端畫中畫，圖像芯片 |
| 文件頁數(shù)： | 16/102頁 |
| 文件大?。?/td> | 2306K |
| 代理商： | SDA9589X |
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SDA 9489X
SDA 9589X
System Description
Micronas
4-16
Preliminary Data Sheet
Figure 4-6
Black level correction of luminance signal
The color carrier is removed out of a CVBS signal by means of a notch filter. It is set to
the corresponding color carrier (3.58 or 4.4 MHz) only if the standard is detected
permanently. This prevents the luminance sharpness of being changed within the
standard search process. For Y signals the notch is disabled.
For a fine adjustment of delaycompensation between luminance and chrominance,
YCDEL
allows a luminance shifting in 16 steps of 50ns.
4.6
Decimation
4.6.1
Luminance and chrominance signals are filtered in horizontal and vertical direction. The
coarse horizontal and vertical picture size (1/2, 1/3, 1/4, 1/6) is independently
programmable with
SIZEHOR
and
SIZEVER
. A fine adjustment in steps of 4 pixel and 2
lines is possible by
HSHRINK
and
VSHRINK
, which allows correct aspect ratio for
multistandard applications (50/60 Hz mixed mode, (S)VGA).
For main decimation factors, the stored number of pixel and lines are listed in the
following tables.
Single PIP Mode
BLANK value
BLACK value
BLANK value
BLACK value
BLANK value
BLACK value
BLANK value
BLACK value
LMOFST
='00' (no additional offset)
LMOFST
='00' (no additional offset)
LMOFST
='10' (reduction of 16 LSB)
LMOFST
='01' (addition of 16 LSB)
M standard signals
B/G/H/I/N standard signals
Received signal
Processed signal
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