Solid state image detector and signal generator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 2, 1989
Grant Date -
N/A
app pub date -
Nov 19, 1987
filing date -
Nov 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Other Claims data not available