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參數(shù)資料
| 型號： | TVP5150PBS |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封裝： | PLASTIC, TQFP-32 |
| 文件頁數(shù)： | 7/68頁 |
| 文件大?。?/td> | 917K |
| 代理商： | TVP5150PBS |
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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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5150PBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSRQ1 | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBSR | COLOR SIGNAL DECODER, PQFP32 |
| TVP5151IPBS | COLOR SIGNAL DECODER, PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5150PBS | 制造商:Texas Instruments 功能描述:IC DECODER VIDEO SMD |
| TVP5150PBSG4 | 功能描述:視頻 IC VERY LOW POWER VIDEO DECODER 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 |
| TVP5150PBSR | 功能描述:視頻 IC Very Low Power Video Decoder 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 |
| TVP5150PBSRG4 | 制造商:Texas Instruments 功能描述: |
| TVP5151 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultralow-Power NTSC/PAL/SECAM Video Decoder |
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