Scan control for light beam position indicator

Details Scan control for light beam position indicator Scan control for light beam position indicator

1979-12-12

1981-11-17

Trafton, David L.

Communications: electrical

Audible indication

Percussion-type sound producer

178 18, 340706, G08C 2100

Patent

active

043014470

ABSTRACT:
A crossed light beam position indicator includes orthogonal arrays of paired light emitters and detectors for covering a display surface with crossed light beams, scanning means coupled to the emitters and detectors for electronically scanning the orthogonal arrays such that a single emitter at any one time is emitting light. Improved scanning means include means for scanning the detector associated with a particular emitter and in addition scanning one or more adjacent detectors during the time that a single emitter is activated to provide plural light paths from a single emitter and thus more precisely define the position of an object placed in proximity to the display surface.

REFERENCES:
patent: 3860754 (1975-01-01), Johnson et al.
patent: 4198623 (1980-04-01), Misek et al.
patent: 4205304 (1980-05-01), Moore

Affiliated with

Also associated with

Rating

Scan control for light beam position indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scan control for light beam position indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scan control for light beam position indicator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1294854