System and a method for processing a signal from an electric device

A computer program storage device having computer-executable instructions stored thereon that, when executed cause one or more processing units in a computer system to perform a method of processing a signal from touch sensitive key, the method comprising:

• representing or storing a reference value for the signal, wherein said reference value is continuously updated and adapted to an actual value of the signal;
• determining a difference value between the signal and the reference value, so that difference value corresponds with a change of the signal;
• associating the difference value with a corresponding range of a spectrum of possible difference values, wherein:
• said spectrum is subdivided into ranges corresponding with possible causes for a change of the signal in the system;
• at least one range corresponds with temperature fluctuations;
• at least one range corresponds with noise;
• at least one range corresponds with hysteresis effects;
• and
• at least one range corresponds with at least one of the relevant changes in the touch sensitive key;
• and
• identifying if the difference value results from a disturbance or from a relevant change in the electric device;
• wherein:
• the spectrum includes all of the possible positive and negative difference values in view of the electric device for identifying positive and negative changes of the signal;
• and
• each of the ranges corresponds with a certain causation of the changes of the received signal;
• and
• recognizing the causation of said change by comparing the change of the signal with the spectrum.

A method for processing a signal from an electric device, wherein said method comprises the following steps:

• a detection circuit receiving the signal from the electric device and optionally modifying said signal;
• setting a reference value;
• one or more processing units thereafter:
• determining a difference value between the signal and the reference value;
• comparing the difference value with a spectrum of the possible difference values, wherein:
• said spectrum is subdivided into ranges corresponding with possible causes for a change of the signal in the system;
• at least one range corresponds with temperature fluctuations;
• at least one range corresponds with noise;
• at least one range corresponds with hysteresis effects;
• and
• at least one range corresponds with at least one of the relevant changes in the electronic device;
• and;
• associating the difference value with the corresponding range of the spectrum;
• identifying if the difference value results from a disturbance or from a relevant change in the electric device;
• and
• updating the reference value;
• wherein:
• each of the ranges corresponds with a certain causation of the change of the received signal;
• and
• by comparing the change of the signal with the spectrum by the one or more processing units the causation of said change is recognizable.