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參數資料
型號: TVP5146M2PFPRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: GREEN, PLASTIC, HTQFP-80
文件頁數: 22/107頁
文件大小: 1427K
代理商: TVP5146M2PFPRG4
Functional Description
13
SLES141B—August 2007
TVP5146M2PFP
Figure 24. Color Low-Pass Filter Frequency
Response
f – Frequency – MHz
70
60
50
40
30
20
10
0
10
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
ITU-R BT.601 –3 dB
@ 1.42 MHz
Amplitude
dB
Figure 25. Color Low-Pass Filter With Filter
Characteristics, NTSC/PAL ITU-R BT.601
Sampling
f – Frequency – MHz
70
60
50
40
30
20
10
0
10
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Amplitude
dB
Filter 3
–3 dB @ 554 kHz
Filter 2
–3 dB @ 844 kHz
Filter 1
–3 dB
@ 1.03 MHz
Filter 0
–3 dB @ 1.41 MHz
2.2.2.2
Y/C Separation
Y/C separation can be done using adaptive 5-line (5-H delay) comb filters or a chroma trap filter. 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 which are shown in Figure 26 and Figure 27. TI’s patented adaptive comb
filter algorithm reduces artifacts such as hanging dots at color boundaries. It 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.
f – Frequency – MHz
40
35
30
25
20
15
10
5
0
5
10
01234567
No Notch Filter
Notch 3 Filter
Notch 1 Filter
Amplitude
dB
Figure 26. Chroma Trap Filter Frequency
Response, NTSC ITU-R BT.601 Sampling
Notch 2 Filter
40
35
30
25
20
15
10
5
0
5
10
01234567
Figure 27. Chroma Trap Filter Frequency
Response, PAL ITU-R BT.601 Sampling
f – Frequency – MHz
Amplitude
dB
No Notch Filter
Notch 2 Filter
Notch 1 Filter
Notch 3 Filter
相關PDF資料
PDF描述
TVP5146M2PFPG4 COLOR SIGNAL DECODER, PQFP80
TVP5146PFPRG4 COLOR SIGNAL DECODER, PQFP80
TVP5146PFP COLOR SIGNAL DECODER, PQFP80
TVP5146PFPR COLOR SIGNAL DECODER, PQFP80
TVP5146PFPG4 COLOR SIGNAL DECODER, PQFP80
相關代理商/技術參數
參數描述
TVP5146PFP 功能描述:視頻 IC 10B High Qual S-Chip Dig Vid 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
TVP5146PFP 制造商:Texas Instruments 功能描述:IC VIDEO DECODER 10BIT 30MSPS HTQFP-80 制造商:Texas Instruments 功能描述:IC, VIDEO DECODER, 10BIT 30MSPS HTQFP-80
TVP5146PFPG4 制造商:Texas Instruments 功能描述:10BIT VIDEO DECODER SMD HTQFP80
TVP5146PFPR 功能描述:視頻 IC NTSC/PAL/SECAM 4x10B Dig Vid Dec 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
TVP5147EVM 功能描述:視頻 IC 開發工具 TVP5147 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V
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