- 您現(xiàn)在的位置：買賣IC網 > PDF目錄384014 > TMC2272A (Fairchild Semiconductor Corporation) 36 Bit Color, 50 MHz Digital Colorspace Converter(36位色彩,50MHz 數(shù)字色隙轉換器) PDF資料下載
參數(shù)資料
| 型號： | TMC2272A |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 36 Bit Color, 50 MHz Digital Colorspace Converter(36位色彩,50MHz 數(shù)字色隙轉換器) |
| 中文描述： | 36位彩色，50兆赫數(shù)字色空間轉換器（36位色彩，50MHz的數(shù)字色隙轉換器） |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 170K |
| 代理商： | TMC2272A |
TMC2272A
PRODUCT SPECIFICATION
REV. 1.1.3 10/25/00
11
128 (Y')
=
258 (G)
102
+50 (B)
032
+131 (R)
083
dec.
hex
128 (U')
=
-149 (G)
36B
+225 (B)
0E1
-76 (R)
3B4
dec
hex
128l (V')
=
-188 (G)
344
-37 (B)
3DB
+225 (R)
0E1
dec.
hex
If the TMC2272A input data alignment for 8-bit GBR is:
0
0
G7
G6
G5
G4
G3
G2
G1
G0
0
0
0
0
B7
B6
B5
B4
B3
B2
B1
B0
0
0
0
0
R7
R6
R5
R4
R3
R2
R1
R0
0
0
then the output data alignment for 10-bit Y'U'V' is:
0
0
Y9
Y8
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
U9
U9
U9
U8
U7
U6
U5
U4
U3
U2
U1
U0
V9
V9
V9
V8
V7
V6
V5
V4
V3
V2
V1
V0
where the tripled U9 and V9 sign bits denote two’s complement
sign extensions. The factors of 4 in the input data format and
128 in the equations are absorbed by the internal 9-bit (factor
of 512) right-shifting of the emerging results.
At the output of the TMC2272A, invert the most significant
bits, U9 and V9, of the chrominance components, and add 1 at
Y6 of the luminance to obtain the true CCIR Rec. 601 values.
Converting from GBR to 8-bit Full-Scale YUV
With the right coefficients and two external NOT gates, the
TMC2272A can convert video data from 8-bit full-scale (e.g.
VGA) GBR components to 8-bit full-scale YUV components.
Table 4. 8-bit component formats and
inclusive ranges:
Color Space Term
Y
Luminance
U
Color difference,
Blue
U'
U + 128
V
Color difference, Red 128 to
Range
0-255
128 to
-127
0-255
Format
magnitude
2
’
s comp
magnitude
2
’
s comp
-127
0-255
0-255
V'
G,B,R
V + 128
Green, Blue, Red
components
magnitude
magnitude
As in the previous RGB to YC
B
C
R
case, begin with the
defining equations, but without the range compensation
factors of 255/876 and 255/896:
Y =
0.5870 (G) +0.1140 (B)
+0.2990 (R)
U = -0.3313 (G)
+0.5000 (B)
-0.1687 (R)
V =
-0.4187 (G) -0.0813 (B)
+0.5000 (R)
The TMC2272A will compute Y, U, and V directly, whereas
inverting the most significant bits of U and V, U7 and V7 will
yield U' and V', respectively. Multiplying the equations
immediately above by 512 and rounding each coefficient to
the nearest integer yields the recommended set of coeffi-
cients for GBR to YUV conversion.
相關PDF資料 |
PDF描述 |
|---|---|
| TMC2301 | 15, 18, 20 MHz Image Resampling Sequencer(15, 18, 20 MHz圖像再采樣序列發(fā)生器) |
| TMC2302A | Image Manipulation Sequencer |
| TMC2302AH5C | Image Manipulation Sequencer |
| TMC2302AH5C1 | Image Manipulation Sequencer |
| TMC2302AKEC | Image Manipulation Sequencer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TMC2272AG1C | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Digital Colorspace Converter 36 Bit Color, 50 MHz |
| TMC2272AG1C2 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Digital Colorspace Converter 36 Bit Color, 50 MHz |
| TMC2272AG1C3 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Digital Colorspace Converter 36 Bit Color, 50 MHz |
| TMC2272AH5C | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TMC2272AH5C2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。