System and a method for processing a signal from an electric device
US8243037B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Mar 22, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94026
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a system for processing a signal from an electric device, e.g. a touch sensitive key. The system comprises a reference value for the signal, wherein said reference value is continuously updated, and an arithmetic unit for determining a difference value between the signal and the reference value, so that difference value corresponds with a change of the signal. The system comprises further a spectrum of the possible difference values, wherein said spectrum is subdivided into ranges corresponding with possible causations for the change of the signal in said system. Additionally, the system comprises a comparing unit for associating the difference value with the corresponding range of the spectrum and for identifying, if the difference value results from a disturbance or from a relevant change in the electric device. Further, the present invention relates to a corresponding method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.