YY Wang, RA Conti, CP Eng, MC Nicholls - US Patent 7,138,717, 2006 - Google Patents
6,211,061 B1 4/2001 Chen et al. 6,218,732 B1 4/2001 Russell et al. 6,225,210 B1 5/2001
Ngo et al. 6,235,633 B1 5/2001 Jang 6,261,951 B1 7/2001 Buchwalter et al. 6,265,779 B1 …