- 您現在的位置：買賣IC網 > PDF目錄98305 > TVP5040CPFP (TEXAS INSTRUMENTS INC) COLOR SIGNAL DECODER, PQFP80 PDF資料下載
參數資料
| 型號： | TVP5040CPFP |
| 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： | POWER, PLASTIC, TQFP-80 |
| 文件頁數： | 26/109頁 |
| 文件大小： | 568K |
| 代理商： | TVP5040CPFP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁
2–7
2.2.3.2 Adaptive Comb Filter
Y/C separation may be done using adaptive 3-line (2-H delay), fixed 3-line, fixed 2-line comb filters, or a chroma trap
filter as shown in Figure 2–10. Adaptive comb filtering is available for both luminance and chrominance. The adaptive
comb filter algorithm computes the vertical and horizontal contours of color based on a block of 3
×3 pixels. If there
is a sharp color transition, comb filtering is applied to the two lines that have fewer color changes. If there is no color
transition, 3-line comb filtering is used with a choice of filter coefficients [1/4, 1/2, 1/4] or [1/2, 0, 1/2] programmable
via the host port. Characteristics of 2-line and 3-line comb filters are shown in Figure 2–11. The filter frequency plots
show that both 2-line and 3-line (with filter coefficients [1/4,1/2,1/4] ) comb filters have zeros at 1/2 of the horizontal
line frequency to separate the interleaved Y/C spectrum in NTSC. The 3-line comb filter has less cross-luma and
cross-chroma noise due to slightly sharper filter cut off. The 3-line comb filter with filter coefficients[1/2, 0, 1/2] has
two zeros at 1/4 and 3/4 of the horizontal line frequency. This should be used for PAL only because of its 90 degrees
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 which are shown in Figures 2–12 to 2–14.
TI’s patented adaptive comb filter algorithm reduces artifacts such as hanging dots at color boundary 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.
Line
Delay
ADAPTIVE COMB FILTER
IN
Luma
Comb
Adaptive Comb
Filter Algorithm
>> 1
+
>> 1
+
Line
Delay
>> 1
+
Comb12
Comb123
Comb23
Comb13
Comb Bypass
Chroma
Comb
Filter Select
Comb_EN
Adap_EN
Figure 2–10. 3-Line Adaptive Comb Filtering
相關PDF資料 |
PDF描述 |
|---|---|
| TVP5040PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5041PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M1PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2IPFPR | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M2IPFP | COLOR SIGNAL DECODER, PQFP80 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TVP5040CPFPG4 | 功能描述:IC NTSC/PAL VIDEO DECODER 80TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉換器 系列:- 產品變化通告:Development Systems Discontinuation 26/Apr/2011 標準包裝:1 系列:- 類型:編碼器 應用:DVB-S.2 系統 電壓 - 電源，模擬:- 電壓 - 電源，數字:- 安裝類型:- 封裝/外殼:模塊 供應商設備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TVP5040EVM | 制造商:Texas Instruments 功能描述:EVAL BD TVP5040EVM USER S GUIDE - Bulk |
| TVP5145 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:NTSC/PAL/SECAM/Component Digital Video Decoder With Macrovision(TM) Detection |
| TVP5145EVM | 制造商:Texas Instruments 功能描述:TVP5145EVM - Bulk |
| TVP5145PFP | 功能描述:視頻 IC NTSC/PAL/SECAM/ Comp 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 |
發布緊急采購，3分鐘左右您將得到回復。