(19)

(11)

EP 1 135 876 A1

(12)

(43) Date of publication: 26.09.2001 Bulletin 2001/39 (21) Application number: 99971229.2 (22) Date of filing: 08.10.1999

(51) International Patent Classification (IPC)7: H04B 10/105 (86) International application number: PCT/US9923/708 (87) International publication number: WO 0128/137 (19.04.2001 Gazette 2001/16)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Hughes Electronics Corporation El Segundo,California 90245-0956 (US)	(72) Inventor: ROCKWELL, David, A. Culver City, CA 90232 (US) (74) Representative: Steil, Christian, Dipl.-Ing. et al Witte, Weller & Partner,Postfach 10 54 62 70047 Stuttgart 70047 Stuttgart (DE)