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參數資料
| 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SOPHISTICUS高端畫中畫，圖像芯片 |
| 文件頁數： | 30/102頁 |
| 文件大?。?/td> | 2306K |
| 代理商： | SDA9589X |
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SDA 9489X
SDA 9589X
System Description
Micronas
4-30
Preliminary Data Sheet
Figure 4-11
Wipe display
If
WIPESPD
is set accordingly,
PIPON
controls the wipe operation. When
PIPON
changes the wipe operation starts. During this period, the readable
PIPSTAT
indicates
the ongoing wipe-process. A transition of
PIPON
from ’0’ to ’1’ triggers the wipe-in. The
wipe-in process stops when the picture reaches its programmed size. When
PIPON
changes from ’1’ to ’0’ the wipe-out starts. The wipe-out is finished when the PiP picture
vanishes. Even for multi-picture display wipe operation is possible. A change of
PIPON
or
WIPESPD
during wipe operation has only an effect after the wipe operation has been
finished.
4.8
Output Signal Processing
4.8.1
To improve picture sharpness, a peaking filter which amplifies higher frequencies of the
input signal is implemented. The amount of peaking can be varied in seven steps by
YPEAK
. The setting ’000’ switches off the peaking. The value ’001’ is recommended as
This value provides a good compromise between sharpness impression and annoying
aliasing. The characteristic for all possible settings is shown in fig. (4-12). The
emphasized frequency depends on the adjusted decimation. The gain maximum is
always located before the band-limit ensuring optimal picture impression.
Luminance Peaking
CPOS='01'
CPOS='10'
CPOS='11'
CPOS='00'
CPOS='01'
CPOS='10'
CPOS='11'
CPOS='00'
CPOS='01'
CPOS='10'
CPOS='11'
CPOS='00'
wipe in
wipe out
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