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參數資料
| 型號： | LC749870LG |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA64 |
| 封裝： | 5 X 5 MM, FLGA-64 |
| 文件頁數： | 28/44頁 |
| 文件大?。?/td> | 538K |
| 代理商： | LC749870LG |
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LC749870LG
No.A1765-34/44
3 Line Median Processing
When the vertical color in the DVD color bar changes and blurs, dot interference may be generated. Dot interference
reduction is attempted by detecting this location and removing the chroma components.
Fig.6 Dot Interference
When the following conditions exist as a result of comparing the BPF values for each line, the chroma components
must be removed.
(1) When there is a match between the median value of each line and the pixel of the line at the center.
(2) When there is a change between lines.
Y Signal Bypass Processing
If the chroma band component of the separated Y signal is compared with the chroma band component of the signal
before separation, and if the chroma band of the signal before separation is smaller, the signal is output as a Y signal.
C Signal Bypass Processing
If a C signal processed by the comb filter is compared with the result processed by the BPF, and if the result of the
BPF is smaller, the BPF processing result is output as a C signal.
Dot Interference Reduction
The line comb filter need not add HLVH*1 to the Y signal if there is a complete line correlation, such as with the Color
Bar. Such an addition will only increase the dot interference shown in Fig. 6 above. Therefore, when a location with
strong line correlation is detected, the horizontal BSF pass band of HLVH to be added to the Y signal is narrowed,
and the dot interference is reduced. The dot interference reduction BSF can be set to ON or OFF using
I2BYC_2DCOMB2 [3].
*1: Horizontal low frequency component of vertical high frequency component
Cross Color Reduction
When a location with weak line correlation is detected, the BPF pass band in the subsequent stage of the C signal is
narrowed, and the cross color is reduced. cross color reduction can be set to ON or OFF using I2BYC_2DCOMB4
[4].
W Y Cy Gr Ma R B
DVD
SG
相關PDF資料 |
PDF描述 |
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| LC749870W | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| LC749880T | SPECIALTY CONSUMER CIRCUIT, PQFP120 |
| LC749880T | SPECIALTY CONSUMER CIRCUIT, PQFP120 |
| LC75010W | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| LC75010W | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LC749870W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Silicon gate NTSC/PAL/SECAM Digital Video Decoder |
| LC749880T | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Silicon gate Image controller LSI for LCD-TV |
| LC749880T-E | 功能描述:視頻 IC RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| LC74FCT162245T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC74FCT16245T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 8-bit Bus Transceiver |
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