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PI7VD9004ABH Datasheet(PDF) 9 Page - Pericom Semiconductor Corporation |
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PI7VD9004ABH Datasheet(HTML) 9 Page - Pericom Semiconductor Corporation |
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9 / 73 page  9 PI7VD9008ABH Adaptive EQ 8-channel 960H Video Decoder www.pericom.com 12/12/14 Comb filter and Y/C Separation Thevideo decoder is capable of separating luma (Y) and chroma (C) of NTSC or PAL video signals using 5-line adaptive comb filter or notch/band-pass filter. The comb filter searches for correlation between 5 lines of input video stored in the internal buffer. The lines are averaged based on the degree of correlation to produce the output video line. If no correlation is found between the 5 lines of video, notch/band-pass filter is used. This process is very effective at reducing cross-luma and cross-chroma noise. The noise appears as arti- facts that degrade the image quality. Reduction of the noise improves the image quality significantly. 14-0207 |
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