Interactive display system

Details Interactive display system Interactive display system

G - Physics

08

C

340/71, 340/135.

G08C 21/00 (2006.01) G06F 3/033 (2006.01)

Patent

CA 1211181

ABSTRACT INTERACTIVE DISPLAY SYSTEM A system whereby a user can interact directly with a display by touching the screen of the display with a probe. The screen is covered by individual resistive tracks each of which is energized by a different source signal. Position co-ordinates of probe contact with the screen are determined simultaneously using probe circuitry for signal identification and for signal level measurement. Display address signals may be used for energisation, eliminating the need for a separate source. The tracks may be formed on the surface of the screen rather than on an overlay, and to conserve the number of source connections required, may be of folded configuration. Each resistive track is terminated by a diode switch A comparator in the probe circuit is used to compare probe detected voltage against a reference level. The comparator output is used to control the bias on each of the diode switches. When reference level is exceeded, diode bias is changed, the tracks are changed from a floating voltage level to a conducting state, and co- ordinate measurement is enabled.

447026

Affiliated with

Also associated with

Rating

Interactive display system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interactive display system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interactive display system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1259782