| Publisher | SiMa Systems | ||
|---|---|---|---|
| Format | 371.2KB PDF | Date added | 01 May 2008 |
| Topics | Touch Screens | ||
| Downloads | 43 | ||
Resistive single-touch screens have been then workhorse of the touch screen market for 20 years. A primary limitation of resistive touch screens is its inability to resolve multiple simultaneous touches. It is equally debilitating when wanting to ignore un-intended touches, e.g. a resting palm or a gripping thumb while writing. SiMa's X-wire resistive multi-touch screens employ the same basic principals as single touch screens but break the large single sensor into a matrix of smaller sensors. This creates a complex interconnect which is resolved with SiMa's cost effective Terminal Interface Chips that are placed on a flex circuit. This ring of Terminal Interface Chips is in turn connected to a modest micro-controller that collects, normalizes, and communicates the touch data.
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