R Lowe, S Broeker, W Liu - US Patent 8,707,008, 2014 - Google Patents
5,813,009 A 9, 1998 Johnson et al. 7,293,238 B1 1 1/2007 Brook et al. 5,924,096 A* 7/1999
Draper et al.......................... 1f1 7,296,011 B2 11/2007 Chaudhuri et al. 5,943,670 A 8/1999 …