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Novel and Forgotten Current-steering Techniques for Resistive Multitouch, Duotouch, and Polytouch Position Sensing with Pressure
Mon, 09/21/2009 - 10:56 — AdrianFreed
| Title | Novel and Forgotten Current-steering Techniques for Resistive Multitouch, Duotouch, and Polytouch Position Sensing with Pressure |
| Publication Type | Conference Paper |
| Year of Publication | 2009 |
| Authors | Freed, Adrian |
| Refereed Designation | Refereed |
| Conference Name | NIME 2009 |
| Date Published | 2009 |
| Abstract | The recent surge in development of multitouch gesture systems focuses around capacitive and optical sensing techniques. Although interesting and widely used by the NIME community, most musical applications of touch benefit greatly from concurrent acquisition of pressure or force at the touch points. Piezoresistive materials have proven the most effective modern choice for this. At least three generations of inventors have developed sensing circuitry for resistive arrays and piezoresistive materials with much duplication of effort along the way. This paper describes the key (and largely forgotten) methods and introduces new higher-performance circuits developed for musical instrument controllers. |
| URL | http://www.nime.org/proceedings/2009/nime2009_230.pdf |