参考文献

LI, Wei; Li, Jianchang; Wu, Yuchuan; Wu, Junjun; Hotchandani, Rajeev; Tam, Steve Yikkai; Suhayl, Tarek; Sypek, Joseph P.; McFadyen, Iain Patent: US2010/227859 A1, 2010 ; Location in patent: Page/Page column 63-64 ; US 20100227859 A1