The ROHM digital video decoder LSI that converts NTSC, PAL analog video signals, 480i/576i/480p/576p analog video signals, analog EGA(400 x 234, 480 x 234), analog RGB WVGA(800 x 480) signals into the YCbCr standard digital format defined by ITU-R recommendations BT.601/BT.656. The device has built-in 10-bit A/D converters and can accept only composite video signal, S-video signal, or Component video signal as an analog input. Asynchronous sampling method and Line lock clock sampling method