Complex sentence: The Active Time Battle (ATB) system was conceived and designed by Hiroyuki Ito when he was inspired while watching a Formula One race and seeing racers pass each other at different speeds, this giving him the idea of different speed values for the individual characters.
Split into simpler sentences: The Active Time Battle (ATB) system was conceived and designed by Hiroyuki Ito when he was inspired while watching a Formula One race and seeing racers pass each other at different speeds. This gave him the idea of different speed values for the individual characters.