(19)

(11)

EP 1 214 864 A2

(12)

(88) Date of publication A3: 07.09.2001 (43) Date of publication: 19.06.2002 Bulletin 2002/25 (21) Application number: 00958265.1 (22) Date of filing: 06.09.2000

(51) International Patent Classification (IPC)7: H04R 19/00 (86) International application number: PCT/DK0000/491 (87) International publication number: WO 0119/134 (15.03.2001 Gazette 2001/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 06.09.1999 DK 125499 07.09.1999 US 391628 12.05.2000 US 570434 (71) Applicant: MICROTRONIC A/S 4000 Roskilde (DK)	(72) Inventors: MÜLLENBORN, Matthias DK-2800 Lyngby (DK) KUHMANN, Jochen, F. DK-2400 Copenhagen NV (DK) SCHEEL, Peter, U. DK-2820 Gentofte (DK) (74) Representative: Frederiksen, Jakob Pade  Plougmann, Vingtoft & PartnersSankt Annae Plads 11P.O. Box 3007 1021 Copenhagen K 1021 Copenhagen K (DK)