參數(shù)資料
型號(hào)： GM5060-H
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(yè)數(shù)： 51/85頁(yè)
文件大?。?/td> 1375K
代理商： GM5060-H
Genesis Microchip
gm5060 / gm5060-H Data Sheet
February 2002
C5060-DAT-01G
43
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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 34. Scaling Block
The gm5060 zoom (expansion/magnification) scaler uses an advanced third generation multi-tap
FIR filter technique proprietary to Genesis Microchip Inc., and provides high quality scaling of
real time video and graphics images. An input field/frame is scalable in both the vertical and
horizontal dimensions.
Interlaced fields may be spatially de-interlaced by vertically scaling and repositioning the input
fields to align with the output display’s pixel map.
4.11.1 Pixel Replication Scaling
In addition to advanced FIR filtering, the gm5060 scaling filter can combine a 2x
pixel-replication type scaling function. This is useful for improving the sharpness and definition
of graphics when scaling at high zoom factors (such as VGA to SXGA). Replication is available
in both the horizontal and vertical directions and may be combined with the FIR filter for greater
than 2x scaling.
4.11.2 Vertical Shrink
The gm5060 also provides an arbitrary vertical shrink down to (50% + 1 line) of the original
image size. Together with the arbitrary horizontal shrink, this allows the gm5060 to capture and
display images one VESA standard format larger than the native display resolution. For
example, SXGA may be captured and displayed on an XGA panel.
4.11.3 Adaptive Contrast Enhancement (ACE)
When zoom scaling is enabled, the gm5060 features the ability to sharpen text and graphic
images. This is performed on an adaptive basis by detecting pulse and step functions on the input,
and effectively adjusting filter coefficients.
The ACE filter provides benefit in some limited scaling ratios:
Scaling from SVGA input resolution to XGA output resolution
Scaling from XGA input resolution to SXGA output resolution
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