Method and apparatus for differentiating touch screen users based on touch event analysis

摘要

Some embodiments of the present invention include a method of differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact and includes detecting a touch event on a touch sensitive surface, generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event, converting the waveform signal into at least a domain signal, extracting distinguishing features from said domain signal, and classifying said features to associate the features of the domain signal with a particular user.

主权项

1. An apparatus for differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact, the apparatus comprising:
a touch sensitive surface for detecting a touch event from at least one user; at least one sensor generating a vibro-acoustic waveform signal from such touch event; a converter for converting the waveform signal into at least a domain signal; a feature extractor for extracting distinguishing features from said domain signal; and a classification unit which uses the distinguishing features of said extractor to associate the features of the domain signal with a particular user.