(19)

(11)

EP 2 235 563 A1

(12)

(43) Date of publication: 06.10.2010 Bulletin 2010/40 (21) Application number: 07849597.5 (22) Date of filing: 19.12.2007

(51) International Patent Classification (IPC):  G01S 17/89(2006.01) (86) International application number: PCT/IL2007/001571 (87) International publication number: WO 2009/078002 (25.06.2009 Gazette 2009/26)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: Microsoft International Holdings B.V. 1043 BW Amsterdam (NL)	(72) Inventors: YAHAV, Giora 34814 Haifa (IL) ZIGELMAN, Gil 22385 Nahariya (IL) ENTIS, Allan C. 69345 Tel Aviv (IL) (74) Representative: Goddar, Heinz J.  Forrester & Boehmert Pettenkoferstrasse 20-22 80336 München 80336 München (DE)