参考文献:
Player, Mark R. Dax, Scott L. Parsons, William H. Brandt, Michael Richard Calvo, Raul R. Patel, Sharmila Liu, Jian Cheung, Wing S. Jetter, Michele C. Lee, Yu-Kai Youngman, Mark A. Pan, Wenxi Weils, Kenneth M. Beauchamp, Derek A. Patent: US007/59936 A, 007 Location in patent: Page/Page column 66-67 7 US 007059936 A