參數資料
型號: 935273916518
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PBGA156
封裝: 15 X 15 MM, 1.15 MM HEIGHT, LEAD FREE, PLASTIC, MS-034, SOT-472-1, BGA-156
文件頁數: 115/178頁
文件大?。?/td> 988K
代理商: 935273916518
2004 Jul 22
41
Philips Semiconductors
Product specication
Multistandard video decoder with adaptive
comb lter and component video input
SAA7118
8.2.3
COMPONENT VIDEO BCS CONTROL
The resulting Y and CB-CR signals are fed to the Component BCS (CBCS) block, which contains the following functions:
Chrominance saturation control by CSAT7 to CSAT0
Luminance contrast and brightness control by CCON7 to CCON0 and CBRI7 to CBRI0
Limiting Y-C
B-CR or CVBS to the values 1 (minimum) and 254 (maximum) to fulfil “ITU Recommendation 601/656”.
handbook, full pagewidth
LUMINANCE 100%
+255
+235
+128
+16
0
white
black
CB-COMPONENT
+255
+240
+212
+128
+16
+44
0
blue 100%
blue 75%
yellow 75%
yellow 100%
colourless
CR-COMPONENT
+255
+240
+128
+16
+44
0
red 100%
red 75%
cyan 75%
cyan 100%
colourless
MHB730
Fig.27 Components Y-CB-CR range.
“ITU Recommendation 601/656” digital levels with default CBCS (decoder) settings CCON[7:0] = 44H, CBRI[7:0] = 80H and CSAT[7:0] = 40H.
Equations for modification to the Y-CB-CR levels via CBCS control I2C-bus bytes CBRI, CCON and CSAT.
Luminance:
Chrominance:
It should be noted that the resulting levels are limited to 1 to 254 in accordance with “ITU Recommendation 601/656”.
Y
OUT
Int
CCON
68
-----------------
Y
128
()
×
CBRI
+
=
C
B CR
()
OUT
Int
CSAT
64
----------------
C
B CR
,
128
()
×
128
+
=
a. Y output range.
b. CB output range.
c. CR output range.
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