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TVP5147M1PFP Datasheet(PDF) 21 Page - Texas Instruments |
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TVP5147M1PFP Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 100 page  Functional Description 13 SLES140A—March 2007 TVP5147M1PFP Figure 2−4. 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 Figure 2−5. 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 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 2−6 and Figure 2−7. 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. f − Frequency − MHz −40 −35 −30 −25 −20 −15 −10 −5 0 5 10 01234567 No Notch Filter Notch 3 Filter Notch 1 Filter Figure 2−6. 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 2−7. Chroma Trap Filter Frequency Response, PAL ITU-R BT.601 Sampling f − Frequency − MHz No Notch Filter Notch 2 Filter Notch 1 Filter Notch 3 Filter |
Similar Part No. - TVP5147M1PFP_07 |
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Similar Description - TVP5147M1PFP_07 |
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