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參數(shù)資料
| 型號(hào)： | SDA9400 |
| 廠商： | MICRONAS SEMICONDUCTOR HOLDING AG |
| 英文描述： | Scan Rate Converter using Embedded DRAM Technology Units |
| 中文描述： | 掃描頻率轉(zhuǎn)換器采用嵌入式DRAM技術(shù)股 |
| 文件頁數(shù)： | 55/94頁 |
| 文件大?。?/td> | 1180K |
| 代理商： | SDA9400 |
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SDA 9400
Micronas
55
Preliminary Data Sheet
6.5.4 Principles of scan rate conversion
The scan rate conversion algorithm concept is based on the assumption that the video input signal
can be in camera mode (two consecutive fields belong not to the same motion phase) or movie
mode (means two consecutive fields belong to the same motion phase). The camera mode material
can be further separated. The separation is based on the motion range of the picture content, which
is displayed. For the different source materials optimised scan rate conversion methods exist. Movie
mode material should be displayed in ABAB or BABA mode depending on the movie mode phase.
For camera mode material the optimised scan rate conversion method depends on the picture
content. That means for still areas the ABAB scan rate conversion method is optimal (best line
flicker reduction) and for moving areas or objects AABB scan rate conversion method is well suited.
Normally camera material can contain both types of areas or objects. That’s why a high
performance 3-D motion detector is included, which analyzes the picture content and assigns each
pixel to a still or moving area (object). Depending on the assignment of the 3-D motion detector
different optimised scan rate conversion methods will be used. Due to the fact that the switch
between these methods is soft, the algorithm is called Soft Switch. Depending on the motion range,
which can be individually defined by the thresholds of the global motion detector block, the Soft Mix
method may be switched to the scan rate conversion method AABB. This display method is best for
camera mode material, if the motion range is as high that line flickering is not visible any more.
The figure below shows the algorithm concept in more detail. The global motion detector can be
used to separate the whole motion range in two areas. The separation point depends on the
parameter setting and can be changed individually. If the motion range exceeds the separation
point, the AABB method is applied. Otherwise the e.g. Soft Mix method is used as the scan rate
conversion method. In case of movie mode ABAB or BABA is applied. The switching is
automatically done if one of the adaptive modes (I2C bus parameter ADOPMODE) is used.
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| SDA9410-B13 | Display Processor and Scan Rate Converter using Embedded DRAM Technology Units |
| SDA9415-B13 | Display Processor and Scan Rate Converter |
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| SDA9588X | Cost-effective Picture-In-Picture ICs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| SDA9401 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Scan Rate Converter using Embedded DRAM Technology Units |
| SDA9410-B13 | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Display Processor and Scan Rate Converter using Embedded DRAM Technology Units |
| SDA9415-B13 | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Display Processor and Scan Rate Converter |
| SDA9488X | 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Cost-effective Picture-In-Picture ICs |
| SDA9489X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PIP IV Advanced SOPHISTICUS High-End Picture-In-Picture ICs |
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