Enhanced technology of touch-sensitive input peripherals for voter data entry in electronic voting systems
The invention consists of a new technology of grid design applicable to data entry electronic membranes or “electronic pads”, said design comprised of touch-sensitive sections having augmented areas, such areas being considerably larger than what has been usual in the prior art; thus when an electronic pad employing this technology connects to a voting machine, it becomes a convenient data entry peripheral for entering voting selections, depicting the available electoral options which are pre-printed on a paper sheet or template overlaying the membranes, thus mimicking a traditional voting means based on a paper ballot, and where the sensitive areas are ample enough, easy to press upon with a finger; and when any one touch-sensitive area corresponding to a preferred candidate or option is pressed, an adjacent LED indicator unique per each option is turned on, confirming the selection just made and guaranteeing high accuracy.
1. A device comprising upper and lower touch-sensitive membranes with a spacer layer therebetween, wherein:
the upper and lower membranes together form a plurality of touch-sensitive areas that each output a different signal to a controller when touched by a user;
each of the touch-sensitive areas includes a plurality of distinct contact points where conductive patterns of the upper and lower membranes are able to touch each other through the spacer layer; and
for each of the plurality of touch-sensitive areas:
the conductive pattern of the lower touch-sensitive membrane is comprised of strips that extend diagonally relative to an edge of the touch-sensitive area;
the conductive pattern of the upper touch-sensitive membrane is comprised of strips that extend inversely diagonal relative to the edge; and
the conductive patterns are able to touch each other when one of the upper and lower touch-sensitive membranes is touched by a finger of the user.
2. An electronic data entry device, comprising:
the device as defined in claim 1 ;
ad-hoc electronic circuitry; and
an enclosure,
wherein when one of the upper and lower touch-sensitive membranes of any one of the plurality of touch-sensitive areas is touched with the finger of the user, a contact area between the finger and the one membrane is comparable to or larger than an upper limit achievable by the finger when pressed against another flat surface.
3. The device as defined in claim 1 , wherein each point where the diagonal strips of the lower and upper touch-sensitive membranes cross constitutes one of the plurality of distinct contact points.
4. The device as defined in claim 1 , wherein:
the device further comprises an LED located next to a said touch-sensitive area; and
when the conductive patterns touch, a confirmation signal is produced by way of the LED lighting and staying lit until other action on the device is taken.
5. The device as defined in claim 4 , wherein the other action is the user touching another one of the plurality of touch-sensitive areas.
6. The device as defined in claim 1 , wherein:
the spacer layer includes a plurality of holes corresponding to the plurality of touch-sensitive areas and through which the conductive patterns of the upper and lower touch-sensitive membranes come into contact; and
an area of each of the plurality of holes is the same as that of the corresponding touch-sensitive area.