from his Wikipedia entry:
"a Japanese inventor claiming to hold the world record for number of inventions with over 3,000, including "PyonPyon" spring shoes and the basic technology for the floppy disk, the CD, the DVD, the digital watch, CinemaScope, armchair "Cerebrex", sauce pump, and the taxicab meter."
"In an interview, Nakamatsu described his "creativity process", which includes listening to music and concludes with diving underwater, where he says he comes up with his best ideas and records them while underwater."
[ thx @jeffstaple ]