The PC1830 is a filter-containing video chroma, synchronizing signal processing LSI compatible with the NTSC/ PAL system. A decoder which converts composite video or separate Y/C video signals into a brightness signal and a color difference signal and outputs the result, and a matrix which comprises independent brightness signal/color difference signal input pins are integrated on one chip. Decoder output can be used to drive an A/D converter; it is appropriate for picture-in-picture screen signal processing and multimedia boards.