ADE3700XT 查看數據表（PDF） - STMicroelectronics
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ADE3700XT Datasheet PDF : 89 Pages
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sRGB
ADE3700
2.14
sRGB
The sRGB block performs two primary functions:
1. Parametric gamma correction on multiple windows or full screen, used for video enhancement
in a window and digital contrast/brightness control. The window coordinates are set by TCON
registers.
2. 3D color cube warping RGB color space.
2.14.1 Parametric Gamma, Digital Contrast / Brightness on Multiple Windows
The function can be applied to the entire window by programming the window control to full screen.
Each color channel acts independently. Simple digital contrast and brightness can be programmed
using this hardware function. The desired window coordinates are programmed into the TCON.
2.14.2 Color Space Warp
The 8 corners of the color cube are independently controlled in 3D space with smooth interpolation
of intermediate colors. Registers are 2’s complement color delta’s. For example, to make WHITE
more like RED, program SRGB_WHITE_R to a small positive value.
Figure 8: Color Space Warp
Color Space Warp
Register Name
SRGB_CTRL
SRGB_BLACK_R
60/89
IN
OUT
Table 20: sRGB Registers (Sheet 1 of 3)
Addr
0x0D00
0x0D01
Mode Bits
R/W
[7:6]
R/W
[5:4]
R/W
[3:2]
R/W
[1:0]
R/W
[7:0]
Default
Description
0x0
Reserved
0x0
gamma_b control
0x0: disable
0x1: full screen
0x2: windowed
0x3: Reserved
0x0
gamma_a control
0x0: disable
0x1: full screen
0x2: windowed
0x3: Reserved
0x0
sRGB control
0x0: disabled
0x1: full screen
0x2: windowed
0x3: Reserved
0x0
Black Point Red Delta
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