G - Physics – 08 – C
Patent
G - Physics
08
C
73/69, 340/135.1
G08C 21/00 (2006.01) G06F 3/033 (2006.01)
Patent
CA 1297177
UK9-87-004 ABSTRACT GRAPHICS INPUT TABLET A graphics input tablet has a conductive layer and a resistive layer with contacts (16,17,23,24) arranged one along each edge of the resistive layer. The conductive layer is held at a negative potential relative to the resistive layer so current flows in each contact when localised pressure is applied to a region of the tablet (20) to bring the layers into electrical contact. The currents vary with both posi- tion and magnitude of the localised pressure. The position of the pressure is detected from the relative currents in opposed contacts and the magnitude of the pressure is detected from the total current in the contacts. The currents are measured by current sense amplifiers and processed in a computer. Analogue front-end processing of the currents is also possible.
564186
Miessler Milan
Pascual Rafael
International Business Machines Corporation
Saunders Raymond H.
LandOfFree
Graphics input tablet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Graphics input tablet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graphics input tablet will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1190483