(19)
(11) EP 1 200 954 A1

(12)

(43) Date of publication:
02.05.2002 Bulletin 2002/18

(21) Application number: 00916274.4

(22) Date of filing: 10.03.2000
(51) International Patent Classification (IPC)7G09G 5/00
(86) International application number:
PCT/US0006/477
(87) International publication number:
WO 0054/247 (14.09.2000 Gazette 2000/37)
(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: 12.03.1999 US 124137 P

(71) Applicant: Varatouch Technology Incorporated
Sacramento, CA 95842-1600 (US)

(72) Inventors:
  • STRAAYER, David, H.
    Citrus Heights, CA 95621 (US)
  • ROGERS, Michael, D.
    El Dorado Hills, CA 95762 (US)

(74) Representative: Hoarton, Lloyd Douglas Charles et al
Forrester & Boehmert,Pettenkoferstrasse 20-22
80336 München
80336 München (DE)

   


(54) AUTO-CALIBRATION OF POINTING DEVICES USED IN A COMPUTER USER INTERFACE