Frequency conversion in a touch sensor
US9710116B2 · kind B2 · utility
2Cited by
0References
36Claims
0Family size
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Key dates
| Filing date | Feb 4, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Apr 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04112
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensitive device includes a touch interface having rows and columns, a signal generator for generating a plurality of unique orthogonal signals on at least a plurality of the rows, respectively, and a frequency converter. The frequency converter receives a first touch signal present on at least one of the plurality of columns, converts the first touch signal to a second signal having a second center frequency, and outputs the second signal. A touch processor is identifies touch on the touch interface by processing the second signal having the second center frequency and outputting touch event data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.