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參數(shù)資料
| 型號： | STK6005 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | converting PC / Mac video images for a TFT-LCD display monitor |
| 中文描述： | 轉(zhuǎn)換電腦/蘋果的視頻圖像的TFT液晶顯示屏 |
| 文件頁數(shù)： | 24/36頁 |
| 文件大小： | 391K |
| 代理商： | STK6005 |
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STK6005
Source Level Measurement
The auto-detecting circuit can detect the minimum and maximum values (MinR, MinG, MinB, MaxR,
MaxG, and MaxB) of the input video data for the contrast adjustment of external ADC. The
measurement window also defines the measurement region of input image.
Source Clock Phase Measurement
STK6005 provides two methods to adjust the sampling phase for external ADC. The first method detects
the toggles of input image (above or below the threshold). The auto-detecting circuit can find the position
with maximum toggle rate and then reveals its position (TGX, TGY) and its toggle rate (TogRate). With
this information, you can set the capture position (SetX, SetY) to capture the toggle data of 16 adjoining
pixels. The 16 toggle data (LVD) will be captured in each frame and a block of this chip automatically
compares said data (LVD) with the results of previous frame. The comparison results will be put in
register EQC to show how many toggle data are equal to those of previous frame.
The other method is to sum up the pixel values and difference (absolute value) between adjacent pixels of
input video. The measurement window defines the image region for calculation. The colors for
calculation can be selected by MaskRGB flags (1 = enable calculating). Some LSBs of summing data can
be truncated to avoid the noise of input video by setting the register MaskBit. The total sum of pixels’
difference can be used as a merit to adjust the external ADC to correct the phase and frequency.
VPOST
Input Image
VPOSB
VCT
HPOSL
HPOSR
HCT
H-Sync
VHSC
V-Sync
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