(19)

(11)

EP 1 636 928 A2

(12)

(88) Date of publication A3: 24.03.2005 (43) Date of publication: 22.03.2006 Bulletin 2006/12 (21) Application number: 04752380.8 (22) Date of filing: 14.05.2004

(51) International Patent Classification (IPC):  H04J 11/00(1974.07) H04Q 7/24(1995.01) H04B 1/00(1968.09) (86) International application number: PCT/US2004/015353 (87) International publication number: WO 2004/112289 (23.12.2004 Gazette 2004/52)

(84) Designated Contracting States: DE FR GB (30) Priority: 14.05.2003 US 470532 P (71) Applicant: TEXAS INSTRUMENTS INCORPORATED Dallas, Texas 75265-5474 (US)	(72) Inventors: BALAKRISHNAN, Jaiganesh Dallas, TX 75243 (US) BATRA, Anju Dallas, TX 75204 (US) DABAK, Anand, G. Plano, TX 75025 (US) (74) Representative: Holt, Michael et al Texas Instruments Limited, European Patents Department (MS 13), PO Box 5069 Northampton NN4 7ZE Northampton NN4 7ZE (GB)