(19)
(11) EP 1 454 487 A1

(12)

(43) Date of publication:
08.09.2004 Bulletin 2004/37

(21) Application number: 02795623.4

(22) Date of filing: 12.11.2002
(51) International Patent Classification (IPC)7H04N 7/12
(86) International application number:
PCT/US2002/036221
(87) International publication number:
WO 2003/043323 (22.05.2003 Gazette 2003/21)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.11.2001 US 3128
20.11.2001 US 331982 P

(71) Applicant: Rosum Corporation
Redwood City, CA 94063 (US)

(72) Inventors:
  • RABINOWITZ, Matthew
    Portola Valley, CA 94208 (US)
  • SPILKER, James, J., Jr.
    Woodside, CA 94062 (US)
  • OMURA, Jimmy, K.
    San Francisco, CA 94107 (US)
  • PIERCE, Matthew, D.
    San Francisco, CA 94107 (US)

(74) Representative: Harris, Ian Richard et al
D. Young & Co.,21 New Fetter Lane
London EC4A 1DA
London EC4A 1DA (GB)

   


(54) USING DIGITAL TELEVISION BROADCAST SIGNALS TO PROVIDE GPS AIDING INFORMATION