Co-ordinate detection system

Details Co-ordinate detection system Co-ordinate detection system

1982-01-19

1984-07-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250549, 340365P, G01V 904, G01J 120, G08C 900

Patent

active

044594763

ABSTRACT:
The invention is directed to an X-Y co-ordinate detection system of the type which generates intersecting paths of radiation across a surface which may be, for example, a touch panel of the cathode ray tube type. Less expensive and more reliable operation is provided by developing the paths of radiation by use of radiation-emissive material disposed near at least one edge of the surface and excited by a flying spot of energy, such as an electron beam. In the preferred embodiment, strips of infrared emissive material are disposed on an internal surface of a cathode ray tube's panel and excited by overscanning the tube's electron beam to develop intersecting paths of infrared radiation across the tube's faceplate.

REFERENCES:
patent: 3764813 (1973-10-01), Clement et al.
patent: 3860754 (1975-01-01), Johnson et al.
patent: 4313109 (1982-01-01), Funk et al.
patent: 4346376 (1982-08-01), Mallos

Affiliated with

Also associated with

Rating

Co-ordinate detection 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 Co-ordinate detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Co-ordinate detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1577775