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參數(shù)資料
| 型號： | GM5060 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | GRAPHICS PROCESSING IC PROVIDING HIGH QUALITY IMAGES FOR LCD MONITORS |
| 中文描述： | 圖形處理芯片提供高品質(zhì)的圖像液晶顯示器 |
| 文件頁數(shù)： | 52/85頁 |
| 文件大?。?/td> | 1375K |
| 代理商： | GM5060 |
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Genesis Microchip
gm5060 / gm5060-H Data Sheet
February 2002
C5060-DAT-01G
44
4
4
.
.
1
1
2
2
G
G
a
a
m
m
a
a
C
C
o
o
r
r
r
r
e
e
c
c
t
t
i
i
o
o
n
n
L
L
U
U
T
T
Image
Capture
YUV
RealColor
Controls
RGB
Color
Controls
Frame Rate
Conversion
Zoom/
Shrink
Scaling
Triple
ADC
DVI
Rx
ITU656
Decoder
Gamma
Correction
LUT
HDCP
Image
Measurement
Display Timing
& Control
OSD
Frame
Store
Interface
Micro-
processor
(MCU)
Host
Interface
SDRAM
Interface
Analog
RGB
Digital
DVI
Digital YUV
Video
(8-bits)
Serial
Interface
Panel
Interface
.
Clock
Recovery
Input
Color
LUT
(24/48-bits)
Display
Clock
Generation
Figure 35. Gamma Correction LUT Block
After the scaling block, the gm5060 provides an 8 to 10-bit look up table (LUT) for each input
color channel. Although any arbitrary transfer function may be programmed, this LUT is
primarily used for two purposes: Gamma correction of the display device and moire cancellation.
A 10-bit output results in an improved color depth control. The 10-bit output is optionally
dithered down to 8 bits (or 6 bits) per channel at the display. Dithering works by spreading
quantization error over neighboring pixels both spatially and temporally. The benefit of dithering
is that the human eye will tend to average neighboring pixels and a smooth image free of
contours will be perceived. Both ordered-type and random-type dithering methods are available,
though ordered-type is preferred to optimize quality.
The LUT has a host programmable bypass enable. If bypassed, the LUT does not require
programming.
As was the case with the input LUT, Data is written through the host interface. The three
channels may be written independently or simultaneously with the same values.
4.12.1 Gamma Correction
Screen brightness is a function of the voltage applied to the LCD display. A “gamma” effect will
occur when the change in brightness is different from an increase in applied voltage at low
magnitude versus the same voltage increase at high magnitudes. LCD displays typically
characterize this non-uniform behavior with a “Gamma Curve”. A typical curve is shown below.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| GM5060-H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:GRAPHICS PROCESSING IC PROVIDING HIGH QUALITY IMAGES FOR LCD MONITORS |
| GM510K | 制造商:Mallory Sonalert Products Inc 功能描述:Cap Ceramic 51pF 500V SL 10% (6 X 4mm) Radial 6.4mm 85°C 制造商:Cornell Dubilier Electronics 功能描述:CERAMIC CAPACITOR - DISC |
| GM5110 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:XGA/SXGA LCD Controller |
| GM5110-H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:XGA/SXGA LCD Controller |
| GM5115 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ONPANEL LCD PANEL CONTROLLER |
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