(19)
(11) EP 0 990 324 A1

(12)

(43) Date of publication:
05.04.2000 Bulletin 2000/14

(21) Application number: 97925573.4

(22) Date of filing: 17.05.1997
(51) International Patent Classification (IPC)7: H04K 1/10, H04L 27/28
(86) International application number:
PCT/US9708/209
(87) International publication number:
WO 9853/572 (26.11.1998 Gazette 1998/47)
(84) Designated Contracting States:
DE ES FR GB

(71) Applicant: AWARE, INC.
Bedford, MA 01730-1442 (US)

(72) Inventors:
  • SANDBERG, Stuart, D.
    Arlington, MA 02174 (US)
  • HELLER, Peter, N.
    Somerville, MA 02144 (US)
  • TZANNES, Michael
    Newton, MA 02166 (US)

(74) Representative: Rupprecht, Kay, Dipl.-Ing. et al
Meissner, Bolte & Partner,Widenmayerstrasse 48
80538 München
80538 München (DE)

   


(54) IMPROVED METHOD FOR PARTIALLY MODULATING AND DEMODULATING DATA IN A MULTI-CARRIER TRANSMISSION SYSTEM