(19)

(11)

EP 1 382 159 A1

(12)

(43) Date of publication: 21.01.2004 Bulletin 2004/04 (21) Application number: 02722548.1 (22) Date of filing: 10.04.2002

(51) International Patent Classification (IPC)7: H04L 12/28, H04L 29/12 (86) International application number: PCT/IB2002/001141 (87) International publication number: WO 2002/084949 (24.10.2002 Gazette 2002/43)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 11.04.2001 IT TO20010035 (71) Applicant: WRAP S.p.A. 60044 Fabriano (AN) (IT)	(72) Inventors: AISA, Valerio I-60044 Fabriano (IT) BELLI, Marcello I-60027 Osimo (IT) BIANCHI, Lucio I-62010 Treia (IT) (74) Representative: Dini, Roberto, Dr. Ing. et al c/o Metroconsult S.r.l.Piazza Cavour 3 10060 None (Torino) 10060 None (Torino) (IT)