Telegraphy – Systems – Position coordinate determination for writing
Patent
1987-11-19
1989-05-02
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
178 20, G08C 2100
Patent
active
048270849
ABSTRACT:
A solid state, touch sensitive position sensor, which sensor includes a conductive surface along the boundaries of which are disposed at least two sets of two elongated current distribution and collection means. The touch sensitive position sensor further includes resistance means operatively disposed so as to interconnect said current distribution and collection means with said conductive surface. The current distribution and collection means and resistance means are configured, so as to (1) provide a substantially linear electric field distribution of equipotential lines and (2) sequentially turn one set of said current distribution and collection means on while turning the other sets off. In an important embodiment, the conductive surface is formed immediately atop a copyboard and by utilizing erasable, felt tip markers having metallic inserts therein, visual images as well as electrical signals, indicative of X-Y coordinate location, may be simultaneously generated.
REFERENCES:
patent: 4622437 (1986-11-01), Bloom et al.
Cannella Vincent D.
Catchpole Clive
McGill John C.
Mulberger Ronald G.
Prewarski Mike
Goldman Richard M.
Massaroni Kenneth M.
Ovonic Imaging Systems, Inc.
Schreyer Stafford D.
Siskind Marvin S.
LandOfFree
Solid state image detector and signal generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid state image detector and signal generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid state image detector and signal generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-586818