Advanced PAL Comb Filter-II(APCF-II)



The Advanced PAL Comb Filter–II is a video signal processor for VCRs, LDPs, and TVs. It separates the Luminance Y and Chrominance C signal from the NTSC/PAL composite signal by using digital signal processing techniques

which minimize dot–crawl and cross–color. The built–in 4xFSC PLL circuit allows a subcarrier signal input, which generates 4xFSC clock for video signal processing. This filter allows a video signal input of an extended frequency bandwidth by using a 4xFSC clock. The built–in vertical enhancer circuit reduces noise and dot crawl on the Luminance Y signal. The built–in A/D and D/A converters allow easy connection to analog video circuits.



• Built–In High Speed 8–Bit A/D Converter

• Four Line Memories (4540 Bytes)

• Advanced Comb–II Process

• Built–In Vertical Enhancer

• Vertical Dot Reduction Process

• Two Built–In High Speed 8–Bit D/A Converters

• Built–In 4xFSC PLL Circuit

• Built–In Clamp Circuit

• Digital Interface Mode

• On–Chip Reference Voltage for A/D Converter