(19)
(11) EP 1 068 738 A1

(12)

(43) Date of publication:
17.01.2001 Bulletin 2001/03

(21) Application number: 99909858.5

(22) Date of filing: 04.03.1999
(51) International Patent Classification (IPC)7H04Q 1/00, G06F 17/00, G08G 1/01, G06F 11/10
(86) International application number:
PCT/US9904/860
(87) International publication number:
WO 9946/940 (16.09.1999 Gazette 1999/37)
(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: 13.03.1998 US 77987 P
23.02.1999 US 256591

(71) Applicant: MOTOROLA, INC.
Schaumburg, IL 60196 (US)

(72) Inventors:
  • BIERACH, Kirk, Bradley
    Saratoga, CA 95070 (US)
  • LOVING, Sean, Thomas
    Mountain View, CA 94043 (US)
  • FITZPATRICK, Mark, Daniel
    Santa Clara, CA 95050 (US)

(74) Representative: Litchfield, Laura Marie 
Motorola European Intellectual Property Operations,Midpoint - Alencon Link
Basingstoke, Hampshire RG21 7PL
Basingstoke, Hampshire RG21 7PL (GB)

   


(54) SYNCHRONIZATION METHOD FOR RFID SYSTEM INCLUDING TAGS HAVING DIFFERENT MEMORY SIZES