E Pasternak, G Ben-Efraim, SM Feeney - US Patent 5,936,949, 1999 - Google Patents
5,258,762 11/1993 Cabon et a1. 342/42 [57] ABSTRACT glfilschetr 'it a1 '' The present
invention provides an ef? cient point-to 5'4O4'374 4/1995 Milli; jt'al"""" 375/200 multipoint …