Method and apparatus for differentiating touch screen users based on touch event analysis
AssigneeQeexo, Co.
InventorsJULIA SCHWARZ, CHRIS HARRISON
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Abstract
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.
Claims21
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.
A computer-implemented method for differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact;
- the method comprising the following steps:
- 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.
A computer readable medium containing instructions for using detected touch screen events to associate particular users with such events, wherein execution of the program instructions by a processor causes the processor to carry out the steps of:
- 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 converted waveform signal;
- and
- classifying said features to associate the features of the domain signal with a particular user.
Dependencies are inferred from the claim text.