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(11)

EP 1 588 500 A1

(12)

(43) Date of publication: 26.10.2005 Bulletin 2005/43 (21) Application number: 03710827.1 (22) Date of filing: 31.01.2003

(51) International Patent Classification (IPC)7: H04B 3/00, H04B 17/00, H03K 19/094, H03K 19/00, H03K 17/00, H03K 3/356 (86) International application number: PCT/US2003/003177 (87) International publication number: WO 2004/070968 (19.08.2004 Gazette 2004/34)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR Designated Extension States: AL LT LV MK RO (71) Applicant: International Business Machines Corporation Armonk, N.Y. 10504 (US)	(72) Inventors: HSU, Louis, Lu-Chen Fishkill, NY 12524 (US) SELANDER, Karl Hopewell Junction, NY 12533 (US) SORNA, Michael Hopewell Junction, NY 12533 (US) ZIER, Steven, J. Hopewell Jonction, NY 12533 (US) (74) Representative: Litherland, David Peter et al IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester,Hampshire SO21 2JN Winchester,Hampshire SO21 2JN (GB)