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参数资料
| 型号： | TVP5150PBSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封装： | GREEN, PLASTIC, TQFP-32 |
| 文件页数： | 7/68页 |
| 文件大小： | 917K |
| 代理商： | TVP5150PBSR |
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Functional Description
9
May 2006
SLES043A
The filter frequency plots show that both 4-line and 3-line (with filter coefficients [1,3,3,1]/8 and [1,2,1]/4) comb
filters have zeros at 1/2 of the horizontal line frequency to separate the interleaved Y/C spectrum in NTSC.
The 4-line comb filter has less cross-luma and cross-chroma noise due to slightly sharper filter cutoff. The
4-line comb filter with filter coefficients [1,1,1,1]/4 has three zeros at 1/4, 2/4, and 3/4 of the horizontal line
frequency. This is to be used for PAL only because of its 90
_ U/V phase shifting from line to line. The comb
filter can be selectively bypassed in the luma or chroma path. If the comb filter is bypassed in the luma path,
then chroma trap filters are used. TI’s patented adaptive comb filter algorithm reduces artifacts such as
hanging dots at color boundaries and detects and properly handles false colors in high frequency luminance
images such as a multiburst pattern or circle pattern. Adaptive comb filtering is the recommended mode of
operation. The complete comb filter selection is shown in the chrominance control #1 register (see Section
3.22.25).
f Frequency MHz
0.0
0.2
0.4
0.6
0.8
1.0
0
1234
5
Amplitude
dB
4 line (1,1,1,1)/4
Figure 32. Comb Filters Frequency Response
4 line (1,3,3,1)/8
3 line (1,2,1)/4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5151 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
| TVP5151EVM | 功能描述:视频 IC 开发工具 TVP5151 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| TVP5151IPBS | 功能描述:视频 IC UltraLo-Pwr NTSC/ RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5151IPBSR | 功能描述:视频 IC UltraLo-Pwr NTSC/PAL SECAM Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
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