参考文献:
BARBOSA, Joseph CARSON, Kenneth Gordon GARDYAN, Michael Walter HEALY, Jason Patrick HAN, Qiang MABON, Ross PABBA, Praveen TARVER, JR., James TERRANOVA, Kristen M. TUNOORI, Ashok XU, Xiaolian Patent: US2012/302562 A1, 2012 Location in patent: Page/Page column 21 US 20120302562 A1