Shares in Sony Corp. tumbled today (Friday) after the company disclosed that it was paying Immersion Corp. $150.3 million to settle a patent dispute. Sony stock fell 5.5 percent on the Tokyo exchange, its largest slide in nearly four years. The lawsuit concerned technology Sony uses in its PlayStation game devices that make controllers vibrate. Sony and Immersion issued a joint statement saying that they would work together in the future to explore "new ways to bring the largest and best range of gameplay experiences to our customers."