参数资料
型号: TVP5156PNPR
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP128
封装: GREEN, PLASTIC, HTQFP-128
文件页数: 20/108页
文件大小: 1395K
代理商: TVP5156PNPR
SLES243E
– JULY 2009 – REVISED MARCH 2011
Figure 3-4. Color Low-Pass Filter Frequency Response
Figure 3-5. Color Low-Pass Filter with Filter Characteristics, NTSC/PAL ITU-R BT.601 Sampling
3.2.3.2
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 3-6 and Figure 3-7. The TI
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.
Copyright
2009–2011, Texas Instruments Incorporated
Functional Description
19
Product Folder Link(s): TVP5158 TVP5157 TVP5156
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