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參數資料
| 型號： | 935261128557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, SOT-407, QFP-100 |
| 文件頁數： | 4/47頁 |
| 文件大小： | 192K |
| 代理商： | 935261128557 |
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1999 Sep 27
12
Philips Semiconductors
Preliminary specication
Digital PC-camera signal processor
SAA8113HL
8.4
Y processing
The separate Y processing (see Fig.5) includes the
following features:
Saturation concealment to reduce the typical saturation
distortion
Contour processing to improve picture sharpness
Noise reduction
Black offset
Pre-gain control to adjust the Y signal with respect to the
gamma range
Knee function (compression factor and knee point are
adjustable)
Adjustable gamma function
Gain control.
handbook, full pagewidth
FCE316
KNEE
SATURATION
CONCEALMENT
Y
Ypre-gain
Yblack
Yvertical contour
CONTOUR PROCESSING
AND
NOISE REDUCTION
GAMMA
×
Ygain
×
+
Fig.5 Y processing diagram.
8.5
RGB to UV conversion
After R, G and B processing, the data path is converted to
U and V signals (see Fig.1). As a result of the reduced
bandwidth, the Y signal is only used as an input for control
loop purposes (measurement engine).
8.6
UV processing
The chrominance processing consists of a noise reduction
by coring and the UV gain control.
8.7
Display function
As an optional feature and for software debugging, it is
possible to visualize:
Eight display bars (assigned via the microcontroller)
Several measurement engine inputs.
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