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參數(shù)資料
| 型號： | 935256670557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 0-BIT, 28.6 MHz, OTHER DSP, PQFP80 |
| 封裝： | 12 X 12 X 1.40 MM, PLASTIC, LQFP-80 |
| 文件頁數(shù)： | 39/39頁 |
| 文件大?。?/td> | 314K |
| 代理商： | 935256670557 |
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1997 Jun 13
9
Philips Semiconductors
Preliminary specication
Digital Signal Processor (DSP) for
cameras
SAA8110G
RGB-to-YUV block
After RGB processing, the channels are separated in a
luminance and two colour difference path:
Y = 0.299 R + 0.597 G + 0.114 B, U = 0.49 (B
Y) and
V = 0.88 (R
Y) . It also contains two down-sampling
filters for U and V signals.
Y-processing
The luminance component includes several features:
Contour correction allowing an increase of the
luminance transitions for a sharper picture
Black stretch function for contrast enhancement in dark
scenes
False colour detector used by the UV-processing block
to enable the colour killer
Filters and noise reduction by coring (only in the high
frequency part of the signal).
Fig.5 RGB-to-YUV conversion.
handbook, full pagewidth
MGK155
Y
(0 to 511)
CONVERSION
MATRIX
DOWN-
SAMPLING
& MUX
9
R
G
B
UV
(
128 to 127)
8
Fig.6 Y processing.
handbook, full pagewidth
MGK156
NOISE
REDUCTION
CONTOUR PROCESSING
AND
FALSE COLOUR DETECTION
BLACK STRETCH
false colour
Y
(0, 0.5 to 255.5)
Y
8
+
9
vertical contour
(
512 to 511)
(from RGB-separation)
10
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