He ended up using multiple 74138 decoder/multiplexer IC’s to control the LED’s. Since the columns have inverted outputs, he couldn’t just hook them straight up to the LED’s.

Via the 2:1 MUX and based on the input selected, the output will be either TV or buffered video. The 400-MHz RGB path accepts resolutions up to UXGA, while the YPbPr path specifies a 70-MHz bandwidth.

has introduced the industry’s first decoder with an integrated 2:1 multiplexing (MUX) video switch that uses analog technology to accurately convert standard and high-definition video (YPbPr) signals ...